A tunnel shotcrete thickness measurement tool

Abstract

The application provides a tunnel shotcrete thickness measuring tool, and relates to the technical field of concrete thickness measurement.The tunnel shotcrete thickness measuring tool comprises a protection box, a protection pipe fixedly connected to the bottom of the protection box, a handle structure threadedly connected to the inner wall of the protection box, a connecting piece connected to the handle structure, and a scale connected to the connecting piece.The protection pipe, the protection box and the handle structure are cooperated to protect the scale.The handle structure, the protection box and the protection pipe are cooperated to protect the scale and reduce the bending deformation of the scale caused by external force during carrying.

Description

Technical Field

[0001] This utility model relates to the field of concrete thickness measurement technology, and more specifically, to a tool for measuring the thickness of shotcrete in tunnels. Background Technology

[0002] In tunnel construction and maintenance projects, shotcrete is a key construction link to ensure the stability and safety of tunnel structure. The uniformity and compliance of the thickness of shotcrete directly affect key indicators such as the tunnel's load-bearing capacity, waterproof performance, and durability. Therefore, measuring the thickness of the shotcrete in the tunnel is an indispensable step in construction quality control and subsequent inspection and evaluation.

[0003] Currently, the most commonly used tools for measuring the thickness of shotcrete in tunnels are rulers. However, rulers are easily bent and deformed by external forces during transport, which affects their usability. Therefore, we have made improvements and proposed a new tool for measuring the thickness of shotcrete in tunnels. Utility Model Content

[0004] This utility model provides a tool for measuring the thickness of shotcrete in tunnels, including a protective box and a protective tube fixedly connected to the bottom of the protective box. The inner wall of the protective box is threaded with a handle structure, and the handle structure is connected to a connector, which is connected to a scale. The protective tube, the protective box, and the handle structure cooperate with each other to protect the scale.

[0005] As a preferred technical solution of this application, the protective tube is provided with ramps on both sides of the end away from the protective box.

[0006] As a preferred technical solution of this application, the handle structure includes a threaded disc that is threadedly connected to the protective box, and the top of the threaded disc is fixedly connected to the handle body.

[0007] As a preferred technical solution of this application, the connector includes a through-hole opened between the threaded disc and the handle body, and two bearings are fixedly connected inside the through-hole, and a sleeve is fixedly connected between the two bearings.

[0008] As a preferred technical solution of this application, a threaded rod is inserted into the inner wall of the sleeve, and the bottom end of the threaded rod is fixedly connected to the top of the scale.

[0009] As a preferred technical solution of this application, a gasket is fitted on the outer surface of the threaded rod. The gasket is located above the handle body, and the side of the gasket and the scale that are close to each other abut against the two bearings respectively.

[0010] As a preferred technical solution of this application, the top end of the threaded rod is threaded with a nut, and the nut abuts against the side of the washer away from the handle body.

[0011] As a preferred technical solution of this application, the outer surface of the scale is provided with auxiliary parts.

[0012] As a preferred technical solution of this application, the auxiliary component includes a connecting sleeve fitted on the outer surface of the scale, the connecting sleeve being located inside the protective box, and a hand-tightening bolt being threaded to the side of the connecting sleeve.

[0013] As a preferred technical solution of this application, an auxiliary plate is fitted on the outer surface of the hand-tightening bolt.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] This application utilizes a handle structure, a protective box, and a protective tube. These components work together to protect the ruler and reduce the likelihood of it bending or deforming due to external forces during transport. Attached Figure Description

[0017] Figure 1 A schematic diagram of the tunnel shotcrete thickness measuring tool provided in this application;

[0018] Figure 2 A partial cross-sectional view of the protective box and protective tube provided in this application;

[0019] Figure 3 A schematic diagram of the sleeve and bearing provided in this application;

[0020] Figure 4 This is a schematic diagram illustrating the structure of the ruler provided in this application during use.

[0021] The image shows:

[0022] 1. Protective box; 101. Protective tube; 102. Threaded disc; 103. Handle body; 104. Sleeve; 105. Bearing; 2. Scale; 201. Threaded rod; 202. Washer; 203. Nut; 3. Connecting sleeve; 301. Hand-tightening bolt; 302. Auxiliary plate. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] For an example, please refer to... Figures 1-3 A tool for measuring the thickness of shotcrete in tunnels includes a protective box 1 and a protective tube 101 fixedly connected to the bottom of the protective box 1. The inner wall of the protective box 1 is threaded with a handle structure, and the handle structure is connected to a connector, which is connected to a scale 2. The protective tube 101, the protective box 1, and the handle structure cooperate to protect the scale 2 and reduce the bending and deformation of the scale 2 due to external forces during carrying. The protective box 1 and the protective tube 101 are welded together. It should be noted that the scale values ​​on the scale 2 in the attached drawings are for illustration only, and the specific range and accuracy of the scale 2 are set according to the actual situation.

[0027] Furthermore, both sides of the protective tube 101 away from the protective box 1 are provided with slopes. The end of the protective tube 101 away from the protective box 1 is solid. The slopes make it easy to insert the end of the protective tube 101 away from the protective box 1 into the sprayed concrete first, so as to leave a hole in the concrete of the part to be tested, and then make it easy to insert the scale 2 into the hole to test the thickness of the concrete.

[0028] Furthermore, the handle structure includes a threaded disc 102 that is threadedly connected to the protective box 1. The threaded connection facilitates the connection or separation of the threaded disc 102 from the protective box 1. The top of the threaded disc 102 is fixedly connected to the handle body 103, and the handle body 103 is welded to the threaded disc 102.

[0029] Furthermore, the connector includes a through-hole between the threaded disc 102 and the handle body 103, with two bearings 105 fixedly connected inside the through-hole, and a sleeve 104 fixedly connected between the two bearings 105; the bearings 105, the sleeve 104, and the handle body 103 are welded together, and a threaded rod 201 is inserted into the inner wall of the sleeve 104, with the bottom end of the threaded rod 201 fixedly connected to the top of the scale 2; a washer 202 is fitted on the outer surface of the threaded rod 201, the washer 202 being located above the handle body 103, and the washer 202... 2 and the scale 2 are close to each other and abut against the two bearings 105 respectively; the top of the threaded rod 201 is threaded with a nut 203, the nut 203 abuts against the side of the washer 202 away from the handle body 103, and the scale 2 and the threaded disc 102 can be connected together through the cooperation of the nut 203, the washer 202 and the threaded rod 201, and the scale 2 and the handle body 103 can rotate, so that the scale 2 will not be affected when the handle body 103 is rotated. The scale 2 and the threaded rod 201 are welded together.

[0030] Furthermore, the outer surface of the scale 2 is provided with an auxiliary component; the auxiliary component includes a connecting sleeve 3 sleeved on the outer surface of the scale 2, the connecting sleeve 3 is located inside the protective box 1, and a hand-tightening bolt 301 is threadedly connected to the side of the connecting sleeve 3; an auxiliary plate 302 is sleeved on the outer surface of the hand-tightening bolt 301. When using the scale 2 for testing, the auxiliary plate 302 can be rotated to be perpendicular to the scale 2. During testing, the auxiliary plate 302 contacts the concrete next to the hole so that the scale of the scale 2 can be indicated by the connecting sleeve 3. The hand-tightening bolt 301 is only used to fix the position of the auxiliary plate 302.

[0031] exist Figure 2 In this state, the hand-tightened bolt 301 contacts the bottom of the inner cavity of the protective box 1, while the top of the auxiliary plate 302 contacts the bottom of the threaded disc 102. This setting can limit the position of the connecting sleeve 3 and the auxiliary plate 302 to prevent the connecting sleeve 3 and the auxiliary plate 302 from swaying inside the protective tube 101.

[0032] The usage process of the tunnel shotcrete thickness measuring tool provided by this utility model is as follows:

[0033] Reference Figure 1First, insert the end of the protective tube 101 furthest from the protective box 1 into the concrete of the area to be tested to create a hole. Then, continue using the protective tube 101 to smooth out any protruding concrete around the hole. Rotate the handle body 103 to separate the threaded disc 102 from the protective box 1. Pull the handle body 103 to remove the scale 2 from the protective tube 101. Loosen the hand-tightening bolt 301 and rotate the auxiliary plate 302 until it is perpendicular to the scale 2. Then, tighten the hand-tightening bolt 301 to adjust the auxiliary plate. Fix the position of plate 302, insert the scale 2 into the hole and push the connecting sleeve 3 so that the auxiliary plate 302 contacts the concrete next to the hole, and read the scale on the scale 2; after use, clean the residual concrete on the scale 2 and auxiliary plate 302, loosen the hand-tightening bolt 301 and rotate the auxiliary plate 302 to be parallel to the scale 2, then insert the scale 2 and auxiliary plate 302 into the protective tube 101, and then thread the threaded disc 102 to the protective box 1 together.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A tool for measuring the thickness of shotcrete in tunnels, characterized in that, It includes a protective box (1) and a protective tube (101) fixedly connected to the bottom of the protective box (1). The inner wall of the protective box (1) is threaded with a handle structure. The handle structure is connected to a connector, and the connector is connected to a scale (2). The protective tube (101), the protective box (1) and the handle structure cooperate with each other to protect the scale (2).

2. The tunnel shotcrete thickness measuring tool according to claim 1, characterized in that, The protective tube (101) has ramps on both sides at the end away from the protective box (1).

3. The tunnel shotcrete thickness measuring tool according to claim 1, characterized in that, The handle structure includes a threaded disc (102) that is threadedly connected to the protective box (1), and the top of the threaded disc (102) is fixedly connected to the handle body (103).

4. The tunnel shotcrete thickness measuring tool according to claim 3, characterized in that, The connector includes a through opening between the threaded disc (102) and the handle body (103), and two bearings (105) are fixedly connected inside the through opening, and a sleeve (104) is fixedly connected between the two bearings (105).

5. The tunnel shotcrete thickness measuring tool according to claim 4, characterized in that, A threaded rod (201) is inserted into the inner wall of the sleeve (104), and the bottom end of the threaded rod (201) is fixedly connected to the top of the scale (2).

6. The tunnel shotcrete thickness measuring tool according to claim 5, characterized in that, The outer surface of the threaded rod (201) is fitted with a gasket (202), which is located above the handle body (103). The gasket (202) and the side of the scale (2) that are close to each other abut against the two bearings (105) respectively.

7. The tunnel shotcrete thickness measuring tool according to claim 6, characterized in that, The top end of the threaded rod (201) is threaded with a nut (203), and the nut (203) abuts against the side of the washer (202) away from the handle body (103).

8. The tunnel shotcrete thickness measuring tool according to claim 1, characterized in that, The outer surface of the ruler (2) is provided with auxiliary parts.

9. The tunnel shotcrete thickness measuring tool according to claim 8, characterized in that, The auxiliary component includes a connecting sleeve (3) fitted on the outer surface of the scale (2), the connecting sleeve (3) being located inside the protective box (1), and a hand-tightening bolt (301) being threaded on the side of the connecting sleeve (3).

10. The tunnel shotcrete thickness measuring tool according to claim 9, characterized in that, An auxiliary plate (302) is fitted onto the outer surface of the hand-tightening bolt (301).

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