Device for detecting distance and perpendicularity of tunnel steel arch

Abstract

The utility model provides a tunnel steel arch spacing and verticality detection device, and relates to the technical field of tunnel construction related equipment, the tunnel steel arch spacing and verticality detection device comprises a main body structure, telescopic structures and an adjusting telescopic member, the two opposite ends of the main body structure are provided with the telescopic structures, and the main body structure is used for detecting the levelness of an arch; the end, away from the main body structure, of the telescopic structure is provided with an adjusting telescopic piece. The telescopic structure is used for being connected with the arch frame through the adjusting telescopic piece. The technical problems that in the prior art, equipment operation is tedious, potential safety hazards exist, and the detection accuracy is affected due to the fact that errors are likely to be generated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction related equipment, in particular to a tunnel steel arch spacing and verticality detection device. Background Art

[0002] In the existing technology, a total station is often used to determine the centerline position of the arch foot and the tunnel and the elevation of the arch foot. According to the determined arch foot position, the two units of the left and right arch feet are first installed, and after temporary fixation, the remaining units are installed by connecting them with steel plates and bolts. After one frame is assembled, the inclination of the arch frame is adjusted by using a plumb bob to ensure that the arch frame is in the vertical plane, and the arch frame is fixed by using locking anchor rods and surrounding radial anchor rods.

[0003] However, the existing method has certain defects: first, the use of measuring instruments such as total stations to locate and lay out lines is cumbersome and not suitable for workers; second, the use of the hanging hammer ball method is relatively cumbersome throughout the process, and there are safety hazards in the hanging hammer ball behavior. The effect is affected by the swing of the hammer ball, and the quality of the steel frame layout cannot be effectively guaranteed; finally, the horizontal ruler, vertical ruler and other measuring instruments are prone to errors, which will affect the accuracy of the detection to a certain extent. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel steel arch spacing and verticality detection device to alleviate the technical problems existing in the prior art, such as the complicated equipment operation, potential safety hazards, and the easy occurrence of errors that affect the detection accuracy.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a device for detecting the spacing and verticality of a tunnel steel arch frame, comprising a main structure, a telescopic structure, and an adjusting telescopic member, wherein the telescopic structures are provided at opposite ends of the main structure, and the main structure is used to detect the horizontality of the arch frame;

[0007] The telescopic structure is provided with the adjusting telescopic member at one end away from the main structure, and the telescopic structure is used to be connected to the arch frame through the adjusting telescopic member.

[0008] Furthermore, the main structure includes two groups of support components, and the two groups of support components are connected by hinges, and each group of support components is connected to the corresponding telescopic structure.

[0009] Furthermore, the support assembly includes a support frame and a connecting frame, one end of the connecting frame is connected to the support frame, and the other end of the connecting frame is connected to the telescopic structure;

[0010] The two groups of support frames are rotatably connected via the hinges.

[0011] Furthermore, the main structure also includes a bubble level meter, which is connected to the connecting frame.

[0012] Furthermore, the telescopic structure includes a first telescopic member, a second telescopic member and a third telescopic member, one end of the first telescopic member is connected to the main structure, and the other end is connected to the third telescopic member through the second telescopic member;

[0013] One end of the third telescopic member away from the second telescopic member is connected to the adjusting telescopic member;

[0014] The third telescopic member is used to be inserted into the second telescopic member when it is contracted, the second telescopic member is used to be inserted into the first telescopic member when it is contracted, and the first telescopic member is used to be inserted into the main structure when it is contracted.

[0015] Furthermore, the tunnel steel arch spacing and verticality detection device also includes a limit connection structure;

[0016] The first telescopic member is connected to the hole of the main structure through the corresponding limiting connection structure;

[0017] The second telescopic member is connected to the hole of the first telescopic member in a limiting manner through the corresponding limiting connection structure;

[0018] The third telescopic member is position-limitingly connected to the hole of the second telescopic member through the corresponding position-limiting connection structure.

[0019] Furthermore, one end of the adjustable telescopic member is connected to the hole of the third telescopic member through the limiting connection structure, and the other end is connected to the arch frame through an adsorption member.

[0020] Furthermore, the position-limiting connection structure includes a connection assembly and a connection piece, and the connection piece is connected to the telescopic piece on one side;

[0021] The connecting component is connected to the connecting piece, and one end of the connecting component away from the connecting piece is inserted into the corresponding hole.

[0022] Furthermore, the third telescopic member is provided with a plurality of holes spaced apart along its extension direction, and a limiting sleeve is provided inside the third telescopic member;

[0023] The adjusting telescopic member is inserted into the limiting sleeve, and the corresponding connecting assembly is used to pass through the adjusting telescopic member and the limiting sleeve and be inserted into the corresponding hole.

[0024] Furthermore, the connecting assembly includes a connecting portion and an elastic member, one end of the elastic member is connected to the connecting portion, and the other end is connected to the connecting portion;

[0025] One end of the connecting portion away from the elastic member is in an arc shape, and the elastic member is used to push the connecting portion into the corresponding hole through elastic force.

[0026] The utility model can achieve the following beneficial effects:

[0027] In the first aspect, the utility model provides a device for detecting the spacing and verticality of tunnel steel arch frames, including a main structure, a telescopic structure and an adjustable telescopic part. The telescopic structures are provided at opposite ends of the main structure, and the main structure is used to detect the horizontality of the arch frame; the telescopic structure is provided at one end away from the main structure with an adjustable telescopic part, and the telescopic structure is used to connect with the arch frame through the adjustable telescopic part.

[0028] In the present invention, the main structure is connected to the adjustable telescopic part through the telescopic structure. When in use, the telescopic structure is extended, and then the adjustable telescopic part is extended from the telescopic structure and fixed, so that the main structure can be connected to the arch frame through the telescopic structure and the adjustable telescopic part; and preferably, the telescopic structure and the adjustable telescopic part are both arranged in four groups, and two groups are provided on both sides of the opposite sides, so that the main structure can be firmly connected relative to the arch frame, thereby ensuring the accuracy of subsequent detection.

[0029] Compared with the existing technology, the tunnel steel arch frame spacing and verticality detection device provided by the utility model is provided with a telescopic structure and an adjustable telescopic part at the end of the main structure to achieve a stable connection between the main structure and the arch frame through the telescopic structure and the adjustable telescopic part. While achieving convenient installation, it also takes into account that the detection part of the main structure remains stable during the detection process, thereby ensuring the accuracy of the detection value.

[0030] In summary, the present invention at least alleviates the technical problems existing in the prior art, such as the complicated operation of the equipment, potential safety hazards, and the easy occurrence of errors that affect the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the main structure of a device for detecting the spacing and verticality of tunnel steel arch frames provided by an embodiment of the present utility model;

[0033] Figure 2A schematic diagram of the partial structure of the telescopic connection portion of the tunnel steel arch spacing and verticality detection device provided by an embodiment of the utility model;

[0034] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure;

[0035] Figure 4 A schematic diagram of the partial structure of the adjustment connection portion of the tunnel steel arch spacing and verticality detection device provided by an embodiment of the utility model;

[0036] Figure 5 for Figure 4 Schematic diagram of the cross-section structure.

[0037] Icons: 1-main structure; 11-support frame; 12-connecting frame; 13-level bubble meter; 14-hinge; 2-telescopic structure; 21-first telescopic part; 22-second telescopic part; 23-third telescopic part; 231-limiting sleeve; 3-adjusting telescopic part; 31-adsorption part; 4-limiting connection structure; 41-connecting assembly; 411-connecting part; 412-elastic part; 42-connecting part. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of this utility model, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0043] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0044] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0045] Example 1

[0046] This embodiment provides a tunnel steel arch spacing and verticality detection device, referring to Figure 1 The tunnel steel arch spacing and verticality detection device includes a main structure 1, a telescopic structure 2 and an adjustable telescopic part 3. The telescopic structures 2 are provided at both opposite ends of the main structure 1, and the main structure 1 is used to detect the horizontality of the arch; the telescopic structure 2 is provided at one end away from the main structure 1 with an adjustable telescopic part 3, and the telescopic structure 2 is used to connect with the arch through the adjustable telescopic part 3.

[0047] The embodiments of the present utility model at least alleviate the technical problems existing in the prior art, such as the complicated operation of the equipment, potential safety hazards, and the easy occurrence of errors that affect the detection accuracy.

[0048] In the embodiment of the present utility model, the main structure 1 is connected to the adjustable telescopic member 3 through the telescopic structure 2. During use, the telescopic structure 2 is extended, and then the adjustable telescopic member 3 is extended and fixed from within the telescopic structure 2, so that the main structure 1 can be connected to the arch frame through the telescopic structure 2 and the adjustable telescopic member 3; preferably, there are four groups of both the telescopic structure 2 and the adjustable telescopic member 3, and two groups are provided on each of the opposite sides, so that the main structure 1 can be stably connected to the arch frame, thereby ensuring the accuracy of subsequent detection.

[0049] Compared with the prior art, the tunnel steel arch frame spacing and verticality detection device provided by the embodiment of the present utility model realizes the stable connection of the main structure 1 to the arch frame through the telescopic structure 2 and the adjustable telescopic member 3 by providing the telescopic structure 2 and the adjustable telescopic member 3 at the end of the main structure 1. On the premise of facilitating installation, it also takes into account the stability of the detection part of the main structure 1 during the detection process, thereby ensuring the accuracy of the detection value.

[0050] In an optional implementation manner of this embodiment, referring to Figure 1 , the main structure 1 includes two support components, and the two support components are connected by a hinge 14, and each support component is connected to the corresponding telescopic structure 2.

[0051] Specifically: The support component preferably has a U-shaped structure, and telescopic structures are provided at both ends of each support component, and the two support components are distributed side by side in the reverse direction and are rotatably connected by a hinge 14; during use, by opening the hinge 14, the two support components are撑开 in the reverse direction, that is, the open ends of the two U-shaped structures are in the reverse direction, and after use, by closing the hinge 14, the two support components are made to coincide for easy storage. Preferably, when storing, the telescopic structure 2 and the adjustable telescopic member 3 can be retracted into the support component.

[0052] Further, referring to Figure 1 , the support component includes a support frame 11 and a connecting frame 12. One end of the connecting frame 12 is connected to the support frame 11, and the other end of the connecting frame 12 is connected to the telescopic structure 2; the two support frames 11 are rotatably connected by a hinge 14.

[0053] Specifically: The support frame 11 is distributed in the first direction, and there are two connecting frames 12. The two connecting frames 12 are respectively connected to the two ends of the support frame 11, and the two connecting frames 12 are distributed in the second direction, and the second direction is perpendicular to the first direction; and the two support frames 11 are arranged side by side and are rotatably connected by two hinges 14.

[0054] Further, referring to Figure 1 , the main structure 1 further includes a horizontal bubble level 13, and the horizontal bubble level i3 is connected to the connecting frame 12.

[0055] Specifically: the level bubble meter 13 is connected to the connecting frame 12, and preferably, there are two level bubble meters 13, one of which is connected to the connecting frame 12 at the top of the support assembly on one side, and the other level bubble meter 13 is connected to the connecting frame 12 at the bottom of the support assembly on the other side, so that when in use, by observing the horizontal effects of the two level bubble meters 13, it is determined that the stone of the detection device is horizontally fixedly connected.

[0056] In an optional implementation manner of this embodiment, refer to Figure 1 The telescopic structure 2 includes a first telescopic member 21, a second telescopic member 22 and a third telescopic member 23. One end of the first telescopic member 21 is connected to the main structure 1, and the other end is connected to the third telescopic member 23 through the second telescopic member 22; the end of the third telescopic member 23 away from the second telescopic member 22 is connected to the adjusting telescopic member 3; the third telescopic member 23 is used to be inserted into the second telescopic member 22 when contracted, the second telescopic member 22 is used to be inserted into the first telescopic member 21 when contracted, and the first telescopic member 21 is used to be inserted into the main structure 1 when contracted.

[0057] Specifically: the first telescopic member 21, the second telescopic member 22 and the third telescopic member 23 are preferably all rectangular parallelepiped tubes with a square ground surface, and the tube diameter of the first telescopic member 21 is larger than that of the second telescopic member 22, and the tube diameter of the second telescopic member 22 is larger than that of the third telescopic member 23; when in use, the first telescopic member 21 is slidably connected to the connecting frame 12, and the second telescopic member 22 is slidably connected to the first telescopic member 21, and the third telescopic member 23 is slidably connected to the second telescopic member 22; preferably, when folded, the first telescopic member 21 is inserted into the connecting frame 12, and the second telescopic member 22 is inserted into the first telescopic member 21, and so on, the third telescopic member 23 is inserted into the second telescopic member 22.

[0058] It should be emphasized that the length of the connecting frame 12 can be 25 cm, the length of the first telescopic member 21 can be 15 cm, the length of the second telescopic member 22 can be 10 cm, and the length of the third telescopic member 23 can be 10 cm.

[0059] Further, refer to Figure 2 or Figure 3 The tunnel steel arch spacing and verticality detection device also includes a limiting connection structure 4; the first telescopic member 21 is limitedly connected to the hole of the main structure through the corresponding limiting connection structure 4; the second telescopic member 22 is limitedly connected to the hole of the first telescopic member 21 through the corresponding limiting connection structure 4; the third telescopic member 23 is limitedly connected to the hole of the second telescopic member 22 through the corresponding limiting connection structure 4.

[0060] Specifically: a limiting connection structure 4 is provided at one end of the first telescopic member 21, and a hole is provided at the free end of the connecting frame 12. When in use, the first telescopic member 21 is pulled out from the connecting frame 12 until the limiting connection structure 4 of the first telescopic member 21 is inserted into the hole of the connecting frame. At this time, due to the limiting effect of the limiting connection structure 4, the first telescopic member 21 cannot be further pulled out from the connecting frame 12, thereby preventing the first telescopic member 21 from falling off the connecting frame 12; similarly, the second telescopic member 22 is also limit-connected to the hole at the end of the first telescopic member 21 away from the connecting frame 12 through the limiting connection structure 4 thereon; the third telescopic member 23 is also limit-connected to the hole at the end of the second telescopic member 22 away from the first telescopic member 21 through the limiting connection structure 4 thereon.

[0061] Further, refer to Figure 4 or Figure 5 One end of the adjustable telescopic member 3 is connected to the hole of the third telescopic member 23 through the limiting connection structure 4, and the other end is used to connect to the arch frame through the adsorption member 31.

[0062] Specifically: the adjusting telescopic part 3 can be inserted into the third telescopic part 23, and one end of the adjusting telescopic part 3 is limitedly connected to the hole of the third telescopic part 23 through the limiting connection structure 4, and the other end is used to connect with the arch frame through the adsorption part 31; and preferably, the adsorption part 31 can be a magnetic part for adsorption on the iron arch frame.

[0063] Further, refer to Figure 3 or Figure 5 The limiting connection structure 4 includes a connection component 41 and a connection member 42, and the connection member 42 is connected to the telescopic member on one side; the connection component 41 is connected to the connection member 42, and the end of the connection component 41 away from the connection member 42 is inserted into the corresponding hole.

[0064] Specifically: the connecting member 42 is a bracket structure, and it can be connected to the first telescopic member 21, the second telescopic member 22, the third telescopic member 23 or the adjustable telescopic member 3, and the connection method can be welding; and the connecting component 41 is connected to the connecting member 42, and the connecting component 41 is elastic. When the connecting component 41 moves to the corresponding hole, the connecting component 41 will be inserted into this hole due to its elasticity.

[0065] Further, refer to Figure 4 The third telescopic member 23 is provided with a plurality of holes spaced apart along its extension direction, and a limiting sleeve 231 is provided inside the third telescopic member 23; the adjusting telescopic member 3 is inserted into the limiting sleeve 231, and the corresponding connecting component 41 is used to pass through the adjusting telescopic member 3 and the limiting sleeve 231, and be inserted into the corresponding hole.

[0066] Specifically, the third telescopic member 23 is provided with a plurality of holes spaced apart along its extension direction. During use, construction personnel can, according to actual needs, pull the adjusting telescopic member 3 out of the third telescopic member 23 and insert it into the corresponding holes via the connecting assembly 41 to secure the adjusting telescopic member 3 relative to the third telescopic member 23. It should be noted that the adjusting telescopic member 3 can be a circular tubular structure, and a circular tubular limiting sleeve 231 is provided inside the adjusting telescopic member 3. By inserting the adjusting telescopic member 3 into the limiting sleeve 231, a sliding connection between the adjusting telescopic member 3 and the limiting sleeve 231 is achieved. The limiting sleeve 231 also has holes at corresponding positions, i.e., the holes of the limiting sleeve 231 match the holes of the third telescopic member 23.

[0067] In an optional implementation manner of this embodiment, refer to Figure 3 or Figure 5 The connecting component 41 includes a connecting portion 411 and an elastic member 412, one end of the elastic member 412 is connected to the connecting portion 42, and the other end is connected to the connecting portion 411; the end of the connecting portion 411 away from the elastic member 412 is an arc-shaped surface, and the elastic member 412 is used to push the connecting portion 411 into the corresponding hole through elastic force.

[0068] Specifically, one end of the elastic member 412 is connected to the connector 42, and the other end is connected to the connecting portion 411. Preferably, the connecting portion 411 is cylindrical with an arc-shaped top. During use, when the connecting portion 411 is not connected to the hole, the elastic member 412 is in a compressed state due to the restraining effect of the telescopic member tube wall. When the connecting portion 411 is located in the hole, the elastic member 412 releases its elastic force, pushing the connecting portion 411 into the corresponding hole.

[0069] Preferably, the elastic member 412 is provided with a spring.

[0070] The detection method of this embodiment:

[0071] First, determine the designed spacing of the installed steel arch frame. Turn the detection device from a closed state to a semi-closed state, extend it into the arch frame, and then fully open it (the length of the detection device is 50 cm at this time). If the spacing is 50 cm long, observe whether it can be fully opened. If it is just opened to support the arch frame, it meets the requirements. If it cannot be opened, the spacing is too small. If it opens but does not support the arch frame, the spacing is too large. In both cases, the spacing needs to be adjusted until it is fully opened to support the arch frame, while keeping the horizontal bubble meter 13 on the structure centered.

[0072] Secondly, if the spacing is greater than 50cm, such as 80cm, adjust the length of one side of the detection device to 40cm, use the adsorption part 31 at the end of the structure to adsorb the arch frame, and observe whether the horizontal bubble meter 13 is centered. If not, the arch frame is not vertical and needs to be adjusted; if it is centered, adjust the length of the upper and lower telescopic structures 2 on the other side of the structure until it completely supports the steel arch frame, and observe the upper and lower arch frame scales.

[0073] Finally, judge according to the scale of the ruler: if both are 40cm, the arch frame meets the requirements; if there is a unequal 40cm between the upper and lower parts, the arch frame spacing does not meet the design spacing and needs to be adjusted; if the upper and lower scales of the horizontal bubble meter 13 are inconsistent, the arch frame is not vertical.

[0074] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other; the above embodiments in this specification are only used to illustrate the technical solution of the utility model, rather than to limit it; although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that: it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the various embodiments of the utility model.

Claims

1. A tunnel steel arch spacing and verticality detection device, characterized in that: It comprises a main structure (1), a telescopic structure (2) and an adjusting telescopic member (3), wherein the telescopic structures (2) are provided at opposite ends of the main structure (1), and the main structure (1) is used to detect the horizontality of the arch frame; The telescopic adjustment member (3) is provided at one end of the telescopic structure (2) away from the main structure (1), and the telescopic adjustment member (2) is used to be connected to the arch frame via the telescopic adjustment member (3).

2. The tunnel steel arch spacing and verticality detection device according to claim 1 is characterized in that: The main structure (1) comprises two groups of support components, and the two groups of support components are connected via hinges (14), and each group of support components is connected to the corresponding telescopic structure (2).

3. The tunnel steel arch spacing and verticality detection device according to claim 2 is characterized in that: The support assembly comprises a support frame (11) and a connecting frame (12), one end of the connecting frame (12) is connected to the support frame (11), and the other end of the connecting frame (12) is connected to the telescopic structure (2); The two groups of support frames (11) are rotatably connected via the hinge (14).

4. The tunnel steel arch spacing and verticality detection device according to claim 3 is characterized in that: The main structure (1) further comprises a bubble level meter (13), and the bubble level meter (13) is connected to the connecting frame (12).

5. The tunnel steel arch spacing and verticality detection device according to claim 1 is characterized in that: The telescopic structure (2) comprises a first telescopic member (21), a second telescopic member (22) and a third telescopic member (23); one end of the first telescopic member (21) is connected to the main structure (1), and the other end is connected to the third telescopic member (23) via the second telescopic member (22); One end of the third telescopic member (23) away from the second telescopic member (22) is connected to the adjusting telescopic member (3); The third telescopic member (23) is used to be inserted into the second telescopic member (22) when contracted, the second telescopic member (22) is used to be inserted into the first telescopic member (21) when contracted, and the first telescopic member (21) is used to be inserted into the main structure (1) when contracted.

6. The tunnel steel arch spacing and verticality detection device according to claim 5 is characterized in that: It also includes a limiting connection structure (4); The first telescopic member (21) is connected to the hole of the main structure through the corresponding limiting connection structure (4); The second telescopic member (22) is connected to the hole of the first telescopic member (21) in a limiting manner via the corresponding limiting connection structure (4); The third telescopic member (23) is connected to the hole of the second telescopic member (22) in a limiting manner via the corresponding limiting connection structure (4).

7. The tunnel steel arch spacing and verticality detection device according to claim 6 is characterized in that: One end of the adjusting telescopic member (3) is connected to the hole of the third telescopic member (23) via the limiting connection structure (4), and the other end is connected to the arch frame via an adsorption member (31).

8. The tunnel steel arch spacing and verticality detection device according to claim 7 is characterized in that: The position-limiting connection structure (4) comprises a connection assembly (41) and a connection piece (42), wherein the connection piece (42) is connected to the telescopic piece on one side; The connecting component (41) is connected to the connecting piece (42), and one end of the connecting component (41) away from the connecting piece (42) is inserted into the corresponding hole.

9. The tunnel steel arch spacing and verticality detection device according to claim 8, characterized in that: The third telescopic member (23) is provided with a plurality of holes spaced apart along its extension direction, and a limiting sleeve (231) is provided inside the third telescopic member (23); The adjusting telescopic member (3) is inserted into the limiting sleeve (231), and the corresponding connecting assembly (41) is used to pass through the adjusting telescopic member (3) and the limiting sleeve (231) and be inserted into the corresponding hole.

10. The tunnel steel arch spacing and verticality detection device according to claim 8 or 9, characterized in that: The connecting assembly (41) comprises a connecting portion (411) and an elastic member (412), one end of the elastic member (412) being connected to the connecting member (42), and the other end being connected to the connecting portion (411); One end of the connecting portion (411) away from the elastic member (412) is in the form of an arc-shaped surface, and the elastic member (412) is used to push the connecting portion (411) to be inserted into the corresponding hole through elastic force.

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