Tunnel section support anchor bolt positioning hole drawing tool

Abstract

The utility model relates to the technical field of positioning tools, in particular to a tunnel section support anchor bolt positioning and hole drawing tool which comprises an arc-shaped mold, the radian of the arc-shaped mold is matched with the radian of a tunnel wall, at least one spirit level is installed on the arc-shaped mold, at least two anchor bolt line drawing holes are formed in the arc-shaped mold, and the anchor bolt line drawing holes are formed in the arc-shaped mold. The anchor bolt lineation holes are kidney-shaped holes, and the anchor bolt lineation holes are coaxially arranged. According to the positioning hole drawing tool, the levelness of the arc-shaped mold can be rapidly adjusted by installing the spirit level on the arc-shaped mold, and it is ensured that anchor bolt line drawing holes are rapidly positioned; the anchor bolt lineation hole is formed in the arc-shaped mold and is a kidney-shaped hole, so that the hole position drawn by the positioning hole drawing tool can adapt to a certain error, a certain adjustment space is provided, the mounting precision of a support is improved, the anchor bolt lineation hole can quickly position the position of a tunnel section support anchor bolt, and the positioning precision of the tunnel section support is improved. Tedious steps of manual measurement and positioning are reduced, and the construction efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of positioning tool technology, and in particular to a tool for marking holes for anchor bolt positioning in tunnel sections. Background Technology

[0002] Fire pipe supports and power cable supports installed within tunnel sections are collectively referred to as tunnel section supports. For example, Chinese utility model patent CN211314282U discloses a connection structure for fire pipes and supports suitable for circular subway tunnel sections. When installing this type of tunnel section support, the base's arc-shaped steel plate must fit against the tunnel wall. Currently, the installation of this type of tunnel section support involves placing a series of pre-fabricated section supports at the required installation location for pre-positioning, and then fixing them with anchor bolts; or first drilling anchor bolt holes at the installation location, and then drilling holes to position the supports.

[0003] However, in reality, tunnel sections are generally long, and the concrete structure of the tunnel section is of high strength and thick, making it difficult to locate the anchor bolt holes. Inaccurate anchor bolt hole positioning will result in loss of manual labor efficiency and damage to the tunnel section structure, and cannot effectively guarantee accuracy and installation efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, such as inaccurate positioning of anchor bolts for tunnel supports, which can easily damage the tunnel structure and slow down construction efficiency. This invention provides a tool for marking holes for positioning anchor bolts for tunnel supports.

[0005] In a first aspect, the present invention provides a tool for marking anchor bolts for positioning in tunnel sections, comprising an arc-shaped mold, the curvature of which matches the curvature of the tunnel wall, at least one level being installed on the arc-shaped mold, and at least two anchor bolt marking holes being formed in the arc-shaped mold, the anchor bolt marking holes being oblong holes and arranged coaxially.

[0006] The tunnel section support anchor bolt positioning and marking tool provided by this utility model reduces the complexity of manual measurement and positioning through the pre-set waist-shaped hole and arc-shaped mold, allowing construction personnel to complete the installation more quickly and conveniently. This tunnel section support anchor bolt positioning and marking tool can realize assembly line construction and reduce labor costs.

[0007] By installing a level on the arc-shaped mold, the mold's level can be quickly adjusted, thus avoiding anchor bolt hole positioning deviations caused by mold tilt and ensuring rapid positioning of the anchor bolt marking holes. The anchor bolt marking holes on the arc-shaped mold are oblong, providing a degree of positional adjustment. This allows the hole positions drawn by the positioning marking tool to accommodate a certain error, offering some adjustment margin and improving the installation accuracy of the support. Simultaneously, the pre-set anchor bolt marking holes can quickly locate the position of the anchor bolts in the tunnel section support, reducing the tedious steps of manual measurement and positioning, and significantly improving construction efficiency.

[0008] When using the mold, select a suitable curved mold based on the curvature of the tunnel wall, ensuring a perfect match between the mold and the tunnel wall's curvature. Place the curved mold against the tunnel wall, ensuring tight contact. Check the mold's levelness using a spirit level and make fine adjustments based on the spirit level reading. Ensure accurate positioning of the slotted holes. Use appropriate marking tools, such as chalk or paint, to mark the anchor bolt positions on the tunnel wall through the anchor bolt marking holes, facilitating drilling operations.

[0009] Preferably, it also includes a grip, which is fixedly mounted on the arc-shaped mold.

[0010] With this structural design, the handle provides a stable and comfortable grip point for construction workers. Workers can easily control the stability and position of the tool through the handle. Especially when fine adjustments are needed to the curved mold, the handle provides good support, helping operators to make fine adjustments more easily.

[0011] Preferably, the number of anchor bolt marking holes is three, and the three anchor bolt marking holes are arranged coaxially.

[0012] With this structural setup, the three anchor bolt marking holes can simultaneously mark the accurate positions of at least three anchor bolts, greatly improving construction efficiency. The three anchor bolt marking holes are set along the same axis, reducing operational errors and ensuring the installation accuracy and stability of the support anchor bolts in the tunnel section.

[0013] Preferably, the device also includes a handle spanning both ends of the second anchor bolt marking hole. The handle includes two connecting portions and a gripping portion connected to the connecting portions, the connecting portions being fixedly connected to the arc-shaped mold.

[0014] The handle is positioned across both ends of the second anchor bolt marking hole, ensuring that the grip does not obstruct the second anchor bolt marking hole, nor does it affect the first and third anchor bolt marking holes. This facilitates the marking operation for construction personnel and improves construction efficiency.

[0015] Preferably, the grip portion has anti-slip texture.

[0016] With this structural design, the anti-slip texture can significantly increase the friction between the grip and the operator's hand, ensuring that the tool is not easily slipped even in the humid environment of the tunnel construction site, maintaining a stable grip, and avoiding errors caused by hand slippage when marking, positioning, and adjusting, thereby ensuring the accuracy of anchor bolt hole positioning.

[0017] Preferably, the axis of the anchor bolt marking hole is collinear with the centerline of the arc-shaped mold.

[0018] This structural design gives the anchor bolt positioning and marking tool for the tunnel section support a certain degree of symmetry, making it easier for construction workers to make horizontal adjustments and position the anchor bolt marking holes, thus making the entire marking and positioning process more efficient.

[0019] Preferably, the level is a bubble level.

[0020] A bubble level, also known as a bubble level or bubble level instrument, provides clear and intuitive feedback on the level status through the position of the bubble, enabling operators to quickly determine whether the equipment has reached the required calibration state, thereby greatly simplifying the adjustment steps and improving construction efficiency.

[0021] Preferably, there are two levels, one level located at the upper part of the arc-shaped mold and the other level located at the lower part of the arc-shaped mold.

[0022] This structural setup is necessary because the construction environment in the tunnel section is complex and has certain space constraints. Equipping both the upper and lower sections with levels allows operators to observe the level's status from either position, enabling them to make leveling adjustments from different angles and directions. This ensures that even in confined spaces, accurate leveling can be easily achieved.

[0023] Preferably, the axis of the level is perpendicular to the axis of the anchor bolt marking hole.

[0024] Setting the axis of the level perpendicular to the axis of the anchor bolt marking hole ensures that the line connecting the anchor bolt marking holes is vertical when the arc mold is adjusted to a horizontal position, thus ensuring the accuracy of the marking positioning.

[0025] Preferably, the length of the anchor bolt marking hole is 5 cm to 10 cm.

[0026] The length of the anchor bolt marking hole is set to 5CM to 10CM. Within this length range, construction personnel can ensure that the height of the anchor bolt hole matches the installation position of the support in the tunnel section, avoiding installation mismatch problems caused by the hole being too short or too long.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] 1. The tunnel section support anchor bolt positioning and hole drawing tool provided by this utility model reduces the complexity of manual measurement and positioning through the preset waist-shaped hole and arc-shaped mold, and construction personnel can complete the installation more quickly and conveniently. This tunnel section support anchor bolt positioning and hole drawing tool can realize flow construction and reduce labor costs.

[0029] 2. The anchor bolt positioning and marking tool for tunnel section supports provided by this utility model can quickly adjust the level of the arc-shaped mold by installing a level on the arc-shaped mold, thereby avoiding the positioning deviation of the anchor bolt holes caused by the tilt of the mold and ensuring the rapid positioning of the anchor bolt marking holes. The anchor bolt marking holes are made on the arc-shaped mold and are oblong holes. The oblong holes have a certain position adjustment capability, so that the hole positions marked by the positioning and marking tool can adapt to a certain error and provide a certain adjustment margin, improving the installation accuracy of the support. At the same time, the anchor bolt marking holes can quickly locate the position of the anchor bolts of the tunnel section support, reducing the tedious steps of manual measurement and positioning, and significantly improving construction efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the hole-drawing tool for anchor bolt positioning in tunnel section support provided in Example 1;

[0031] Figure 2 This is a schematic diagram of the grip structure;

[0032] Figure 3 This is a schematic diagram of the hole-drawing tool for anchor bolt positioning in tunnel section support provided in Example 2.

[0033] Marked in the image:

[0034] 1-Arc-shaped mold, 11-Level, 12-Anchor bolt marking hole, 2-Handle, 21-Connecting part, 22-Holding part. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0036] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0038] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing between identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0039] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0040] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0041] Example 1

[0042] This embodiment provides a tool for marking holes to locate anchor bolts in tunnel section supports, used to mark and position anchor bolts in tunnel section supports when installing them within a tunnel section.

[0043] like Figure 1 As shown, the tunnel section support anchor bolt positioning and hole-drawing tool provided in this embodiment includes an arc-shaped mold 1. The arc-shaped mold 1 in this embodiment can be made of steel, but preferably of aluminum alloy. The aluminum alloy arc-shaped mold 1 is lighter than the steel one, making it easier to handle and operate, especially suitable for applications requiring frequent movement. The curvature of the arc-shaped mold 1 in this embodiment matches the curvature of the tunnel wall. Specifically, the tunnel wall is usually circular or arc-shaped, and the arc-shaped mold 1 needs to match the curved shape of the tunnel wall to ensure that the mold can fit evenly and stably on the tunnel wall. Here, "curvature matching" means that the curvature of the arc-shaped mold 1 (e.g., the curvature of the arc-shaped mold 1) needs to be approximately the same as the curvature of the tunnel wall.

[0044] like Figure 1 As shown, the arc-shaped mold 1 has at least two anchor bolt marking holes 12. The anchor bolt marking holes 12 are oblong holes. In the oblong hole, the axis refers to the center line along the long axis of the hole. In this embodiment, the anchor bolt marking holes 12 are arranged coaxially, that is, the axes of all anchor bolt marking holes 12 coincide.

[0045] Furthermore, such as Figure 1 As shown, in this embodiment, the orthographic projection of the arc-shaped mold 1 can be a rectangle, preferably as shown in the figure. Figure 1 The rectangular, arc-shaped mold 1 shown can be used to mark three anchor bolt marking holes 12, and the three anchor bolt marking holes 12 are arranged coaxially. The three anchor bolt marking holes 12 can simultaneously mark the accurate positions of at least three anchor bolts, which greatly improves construction efficiency. The coaxial arrangement of the three anchor bolt marking holes 12 reduces operational errors and ensures the installation accuracy and stability of the support anchor bolts in the tunnel section.

[0046] Furthermore, such as Figure 1 As shown, in this embodiment, the orthographic projection of the arc mold 1 is a rectangle, that is, the arc mold 1 has left and right symmetry. The axes of the three anchor bolt marking holes 12 can be set to be collinear with the center line of the arc mold 1. This setting makes the anchor bolt positioning and marking tool of the tunnel section support better symmetry, which is convenient for construction personnel to make horizontal adjustments and position the anchor bolt marking holes 12, making the whole marking and positioning process more efficient.

[0047] In this embodiment, the arc-shaped mold 1 is equipped with at least one level 11, specifically, as shown in the example below. Figure 1 As shown, on the upper part of the arc-shaped mold 1 (e.g.) Figure 1A level 11 is set above the first anchor bolt marking hole 12 from top to bottom. Preferably, the level 11 can be located on the center line of the arc mold 1.

[0048] Furthermore, in this embodiment, the axis of the level 11 (the center line of the long axis of the level 11) is perpendicular to the axis of the anchor bolt marking hole 12. Setting the axis of the level 11 perpendicular to the axis of the anchor bolt marking hole 12 ensures that the line connecting the anchor bolt marking holes 12 is vertical when the arc mold 1 is adjusted to a horizontal position, thus ensuring the accuracy of the marking and positioning.

[0049] Furthermore, in this embodiment, the level 11 is a bubble level, also known as a bubble spirit level or bubble instrument. The bubble level can provide clear and intuitive feedback on the leveling status through the bubble position, enabling operators to quickly determine whether the equipment has reached the required calibration state, thereby greatly simplifying the adjustment steps and improving construction efficiency.

[0050] Furthermore, in this embodiment, the length of the anchor bolt marking hole 12 can be 5CM to 10CM, for example, 5CM, 6CM, 7CM, 8CM, 9CM, or 10CM. Setting the length of the anchor bolt marking hole 12 to 5CM to 10CM within this range allows construction personnel to ensure that the height of the anchor bolt hole matches the installation location of the tunnel section support (the tunnel section support installation location generally also has a slotted hole), avoiding installation mismatch problems caused by holes that are too short or too long.

[0051] Furthermore, the tunnel section support anchor bolt positioning and drilling tool provided in this embodiment may also include a handle 2, which is fixedly installed on the arc-shaped mold 1. The specific form of the handle 2 is not limited; for example, it can be a T-shaped handle, with the gripping part located at the upper end of the T, suitable for two-handed gripping, providing greater torque and control. It can also be an L-shaped handle, typically composed of two parts, resembling an inverted "L". The upper part is the gripping part, and the lower part is the connecting part. With this structural design, the handle 2 provides a stable and comfortable gripping point for the construction worker. The worker can easily control the stability and position of the tool through the handle 2, especially when fine-tuning the arc-shaped mold 1 is required. The handle 2 provides good support, helping the operator to make precise adjustments more easily.

[0052] Preferably, the grip 2 can be as follows: Figure 1 , Figure 2 As shown, the overall structure is U-shaped, and the handle 2 can span across both ends of the second anchor bolt marking hole 12 (the middle one of the three anchor bolt marking holes 12, for example). Figure 1 As shown, Figure 1The components, arranged from top to bottom, are the first anchor bolt marking hole 12, the second anchor bolt marking hole 12, and the third anchor bolt marking hole 12. The handle 2 includes two connecting parts 21 and a gripping part 22 connected to the connecting parts 21. One connecting part 21 can be located between the first anchor bolt marking hole 12 and the second anchor bolt marking hole 12, and the other connecting part 21 can be located between the second anchor bolt marking hole 12 and the third anchor bolt marking hole 12. The connecting parts 21 are fixedly connected to the arc-shaped mold 1. The handle 2 is positioned across both ends of the second anchor bolt marking hole 12, so that the gripping part 22 does not obstruct the second anchor bolt marking hole 12, nor does it affect the first and third anchor bolt marking holes 12, facilitating the marking operation for construction personnel and improving construction efficiency.

[0053] Furthermore, the line connecting the two connecting parts 21 can coincide with the axis of the anchor bolt marking hole 12. Furthermore, the connecting part 21 can be hinged to the arc mold 1. This hinge design allows the handle 2 to rotate freely or adjust its angle relative to the arc mold 1. During the marking operation, the handle 2 can be rotated to the side of the second anchor bolt marking hole 12, which makes the marking operation more convenient.

[0054] Furthermore, such as Figure 2 As shown, the grip 22 can also have anti-slip textures. These textures can be formed by intersecting straight lines, typically creating a diamond or rectangular grid; they can also be spiral or dotted anti-slip textures. The anti-slip textures significantly increase the friction between the grip 22 and the operator's hand, ensuring that the tool does not easily slip even in a humid tunnel working environment, maintaining a stable grip. This prevents errors caused by hand slippage during marking, positioning, and adjustment, thereby ensuring the accuracy of anchor bolt hole positioning.

[0055] The tunnel section support anchor bolt positioning and marking tool provided in this embodiment reduces the complexity of manual measurement and positioning by using an arc-shaped mold 1 with a pre-set anchor bolt marking hole 12 (waist-shaped hole). Construction personnel can complete the installation more quickly and conveniently. This tunnel section support anchor bolt positioning and marking tool can realize continuous construction and reduce labor costs.

[0056] By installing a level 11 on the arc-shaped mold 1, the level of the arc-shaped mold 1 can be quickly adjusted, thereby avoiding the positioning deviation of the anchor bolt holes caused by the tilt of the mold and ensuring the rapid positioning of the anchor bolt marking holes 12. The anchor bolt marking holes 12 are made on the arc-shaped mold 1, and the anchor bolt marking holes 12 are oblong holes. The oblong holes have a certain position adjustment capability, so that the hole positions drawn by the positioning marking tool can adapt to a certain error and provide a certain adjustment margin, improving the installation accuracy and convenience of the support. At the same time, the anchor bolt marking holes 12 can quickly locate the position of the anchor bolts of the support in the tunnel section, reducing the tedious steps of manual measurement and positioning, significantly improving construction efficiency, and reducing the structural damage of the tunnel section caused by inaccurate positioning of anchor bolt holes.

[0057] When using the mold, select a suitable curved mold 1 according to the curvature of the tunnel wall to ensure a perfect match between the mold and the curvature of the tunnel wall; attach the curved mold 1 to the wall of the tunnel section to ensure tight contact between the mold and the tunnel wall; check the levelness of the mold using a level 11 and make fine adjustments based on the reading of the level 11. Ensure the anchor bolt marking hole 12 is accurately positioned; use a suitable marking tool such as chalk or paint to mark the position of the anchor bolt on the tunnel wall through the anchor bolt marking hole 12, and then drilling can be carried out conveniently.

[0058] Example 2

[0059] Based on Example 1, such as Figure 3 The tunnel section support anchor bolt positioning and hole drawing tool provided in this embodiment includes two levels 11, one of which is located on the upper part of the arc-shaped mold 1 (e.g., Figure 3 As shown above the first anchor bolt marking hole 12 from top to bottom, another level 11 is located at the lower part of the arc-shaped mold 1 (e.g., above the first anchor bolt marking hole 12). Figure 3 (as shown below the third anchor bolt marking hole 12 from top to bottom), further, in this embodiment, the two levels 11 can be set symmetrically up and down.

[0060] With this structural setup, the construction environment in the tunnel section is complex and there are certain space constraints. Equipping both the upper and lower sections with level instruments 11 allows operators to observe the status of the level instruments 11 from either position, enabling them to make level adjustments from different angles and directions. This ensures that even in confined spaces, accurate leveling can be easily achieved.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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. A tool for marking holes for anchor bolt positioning in tunnel sections, characterized in that, The system includes an arc-shaped mold (1) whose curvature matches that of the tunnel wall. The arc-shaped mold (1) is equipped with at least one level (11). The arc-shaped mold (1) has at least two anchor bolt marking holes (12), which are waist-shaped holes and are arranged coaxially.

2. The tool for marking holes for anchor bolt positioning in a tunnel section as described in claim 1, characterized in that, It also includes a grip (2), which is fixedly installed on the arc-shaped mold (1).

3. The tool for marking holes for anchor bolt positioning in a tunnel section as described in claim 1, characterized in that, The number of anchor bolt marking holes (12) is three, and the three anchor bolt marking holes (12) are arranged coaxially.

4. The tool for marking holes for anchor bolt positioning in a tunnel section as described in claim 3, characterized in that, It also includes a handle (2) that spans both ends of the second anchor bolt marking hole (12). The handle (2) includes two connecting parts (21) and a gripping part (22) connected to the connecting parts (21). The connecting parts (21) are fixedly connected to the arc-shaped mold (1).

5. The tool for marking holes for anchor bolt positioning in a tunnel section as described in claim 4, characterized in that, The grip portion (22) has anti-slip texture.

6. The tool for marking holes for anchor bolt positioning in a tunnel section as described in claim 3, characterized in that, The axis of the anchor bolt marking hole (12) is collinear with the centerline of the arc-shaped mold (1).

7. The tool for marking holes for anchor bolt positioning in tunnel sections according to claim 1, characterized in that, The level (11) is a bubble level.

8. The tool for marking holes for anchor bolt positioning in tunnel sections according to claim 1, characterized in that, There are two levels (11), one of which is located on the upper part of the arc mold (1) and the other is located on the lower part of the arc mold (1).

9. A tool for marking holes for anchor bolt positioning in tunnel sections according to claim 1, characterized in that, The axis of the level (11) is perpendicular to the axis of the anchor bolt marking hole (12).

10. A tool for marking holes for anchor bolt positioning in a tunnel section as described in claim 1, characterized in that, The length of the anchor bolt marking hole (12) is 5CM to 10CM.

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