A pre-embedded sleeve positioning device

Abstract

The application relates to a pre-buried sleeve positioning device, and relates to the technical field of building construction, which comprises at least two groups of positioning mechanisms, each of the positioning mechanisms comprises an adjusting frame and a plurality of positioning beams, the positioning beams are slidably arranged on the adjusting frame, and the positioning beams are provided with elevation adjusting pieces for mounting pre-buried sleeves; a laser positioning module is arranged on one of the positioning mechanisms, and the laser positioning module is used for emitting a laser reference line parallel to the arrangement direction of the positioning beams. The application controls the spacing of the pre-buried sleeves through the sliding cooperation of the adjusting frame and the positioning beams, realizes the adjustment of the vertical elevation by using the elevation adjusting pieces, ensures that the central axes of all the pre-buried sleeves are collinear by means of the unified reference provided by the laser positioning module, thereby realizing the synchronous control of the three dimensions of the pre-buried sleeve axis, spacing and elevation, and ensuring the accurate positioning of all the pre-buried sleeves in long-distance construction, thereby guaranteeing the construction quality and improving the construction efficiency.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a pre-embedded sleeve positioning device. Background Technology

[0002] In the construction of track beams, the precise positioning of embedded sleeves is a crucial step in ensuring that the subsequent equipment installation meets design requirements. These embedded sleeves need to be precisely controlled to be on the same axis, and their adjacent spacing and top surface elevation must meet strict installation specifications. Any slight deviation may cause the installation bolts to fail to be properly positioned or cause local stress concentration, affecting the safe operation of the equipment.

[0003] Currently, the common construction process for pre-embedded sleeves in track beam construction involves setting out the lines using a total station or theodolite after the formwork is erected, and then having construction workers install the pre-embedded sleeves one by one according to the measured points. In actual operation, workers need to determine the planar position of each sleeve in the complex steel reinforcement mesh, use simple support frames for temporary fixation, and then use a level to check and adjust the elevation of the top surface of each sleeve.

[0004] This traditional construction method has significant limitations. Because each sleeve requires independent positioning, the lack of a unified positioning benchmark easily leads to cumulative measurement and installation errors during long-distance construction, causing deviations in the centerline of the entire row of sleeves. Furthermore, this process is cumbersome, requires a high level of technical skill from operators, has low construction efficiency, and struggles to ensure precise consistency in the elevation of all sleeve top surfaces. The shortcomings of this traditional method are particularly pronounced in projects with high installation precision requirements, such as large gantry crane track beams, failing to meet the higher demands of modern construction for both precision and efficiency. Utility Model Content

[0005] To address the problems of poor axis control accuracy, large errors, and low construction efficiency in existing pre-embedded sleeve construction, this application provides a pre-embedded sleeve positioning device.

[0006] The embedded sleeve positioning device provided in this application adopts the following technical solution: A pre-embedded sleeve positioning device includes at least two sets of positioning mechanisms. Each set of positioning mechanisms includes an adjusting frame and several positioning beams. The positioning beams are slidably disposed on the adjusting frame, and the positioning beams are provided with elevation adjustment components for installing the pre-embedded sleeve. It also includes a laser positioning module, which is disposed on one of the positioning mechanisms. The laser positioning module is used to emit a laser reference line parallel to the arrangement direction of the positioning beams.

[0007] By adopting the above technical solution, the spacing of the pre-embedded sleeves can be controlled by the sliding cooperation between the adjusting frame and the positioning beam during use. The vertical elevation of the pre-embedded sleeves can be adjusted by the elevation adjusting component. The laser reference line emitted by the laser positioning module provides a unified axial reference for all distributed positioning mechanisms, ensuring that the center of each pre-embedded sleeve is located on the same straight line. This solution can simultaneously control the axis, spacing, and elevation of the pre-embedded sleeves of the track beam. The modular positioning mechanism combination ensures that all pre-embedded sleeves are located on the same axis over a long distance. This integrated design enables batch positioning and installation of multiple pre-embedded sleeves, avoiding the repetitive measurement and adjustment of each pre-embedded sleeve in the traditional process. This not only ensures construction quality but also significantly reduces manpower, material resources, and time costs, thereby greatly improving the overall construction efficiency.

[0008] In one specific implementation, the elevation adjustment component includes a positioning groove on the positioning beam, and an adjustment bolt and an adjustment nut passing through the positioning groove. One end of the adjustment bolt is used to connect to the pre-embedded sleeve, and the other end is connected to the adjustment nut. The adjustment nut abuts against the side of the positioning groove away from the pre-embedded sleeve.

[0009] By adopting the above technical solution, when in use, rotating the adjusting nut can drive the adjusting bolt and the pre-embedded sleeve connected to it to move up and down slightly in the vertical direction, so as to achieve fine adjustment of the elevation of the top surface of the pre-embedded sleeve; after the adjustment is completed, the locking function of the nut can resist the buoyancy force during concrete pouring and ensure the stability of the elevation positioning.

[0010] In one specific implementation, the adjustment frame includes a first frame and two second frames, the two second frames being slidably connected to both sides of the first frame via a sliding assembly.

[0011] By adopting the above technical solution, the width of the entire adjustment frame is changed by sliding the second frame on both sides relative to the first frame in the middle. This structure allows the positioning device to flexibly adapt to track beams or foundation structures of different widths, thereby improving the versatility and applicability of the device.

[0012] In one specific implementation scheme, the first frame is arranged in an I-shape, the second frame is arranged in a C-shape, and the two second frames are arranged facing each other.

[0013] By adopting the above technical solution, a stable nested fit is formed by utilizing the structural characteristics of I-shaped and C-shaped profiles; this not only achieves smooth sliding, but also uses the mutual restraint of the profiles to prevent the second frame from warping and twisting during sliding, thereby enhancing the overall rigidity and stability of the frame.

[0014] In one specific implementation, the sliding assembly includes a first sliding groove formed on the first frame, a second sliding groove formed on the second frame, and a first bolt assembly passing through the first sliding groove and the second sliding groove, wherein the first sliding groove and the second sliding groove at least partially overlap.

[0015] By adopting the above technical solution, the first sliding groove and the second sliding groove provide a sliding path and adjustment space for the bolt assembly. The overlap of the first sliding groove and the second sliding groove ensures the continuity of the connection channel; thus, it is possible to achieve stepless, continuous adjustment and reliable fixation of the width of the adjustment frame.

[0016] In one specific implementation, the first bolt assembly includes a first bolt and a first nut, the first bolt passing through the first sliding groove and the second sliding groove, the first nut being threadedly connected to the first bolt and abutting against the outer walls of the first sliding groove and the second sliding groove, respectively.

[0017] By adopting the above technical solution, tightening the first nut together with the head of the first bolt clamps the flanges of the first and second frames from both sides, generating huge frictional force to achieve fixation; this structure has a large locking force and reliable fixation, and can ensure that the width of the adjustable frame remains unchanged during construction.

[0018] In one specific implementation, the first frame is provided with a first adjustment groove, the second frame is provided with a second adjustment groove, the first adjustment groove and the second adjustment groove at least partially overlap, and the positioning beam is fixed to the adjustment frame by a second bolt assembly passing through the first adjustment groove and the second adjustment groove.

[0019] By adopting the above technical solution, and by opening overlapping first and second adjustment slots on different frames, guidance and locking points are provided for the longitudinal movement and fixation of the positioning beams; this structure allows each positioning beam to independently and flexibly adjust its longitudinal position, thereby controlling the spacing of the pre-embedded sleeves.

[0020] In one specific implementation, the second bolt assembly includes a second bolt and a second nut, the second bolt passing through the first adjustment groove and the second adjustment groove, the second nut being threadedly connected to the second bolt and abutting against the outer walls of the first adjustment groove and the second adjustment groove, respectively.

[0021] By adopting the above technical solution, the clamping force generated by the second bolt and the second nut can firmly lock the positioning beam in any set position on the adjusting frame, ensuring the construction accuracy of the pre-embedded sleeve spacing.

[0022] In one specific implementation, the laser positioning module is fixed to the outside of the adjustment frame by a mounting bracket.

[0023] By adopting the above technical solution, the laser positioning module is securely mounted on the positioning mechanism via the mounting base, ensuring that the relative positional relationship between the laser reference line and the device itself is fixed.

[0024] In one specific implementation, the at least two sets of positioning mechanisms are detachably connected by connecting rods.

[0025] By adopting the above technical solution and using connecting rods to mechanically connect adjacent positioning mechanisms, multiple positioning mechanisms can be quickly assembled into a more rigid whole on the construction site, further ensuring the stability of the entire positioning device under dynamic working conditions such as concrete pouring.

[0026] In summary, the beneficial technical effects of this application are as follows: Through the modular positioning mechanism design, the positioning technology for pre-embedded sleeves is comprehensively improved; the cooperative design of the slidingly connected adjustment frame and positioning beam enables the device to achieve stepless width adjustment through the relative sliding of the first and second frames, adapting to the construction needs of track beams of different specifications; by setting overlapping adjustment grooves on the first and second frames and using the clamping and fixing method of the second bolt assembly, the positioning beam can be precisely adjusted in the longitudinal position, thereby ensuring the construction accuracy of the pre-embedded sleeve spacing. This device establishes a unified axis benchmark through a laser positioning module, combined with elevation adjustment components on the positioning beam, to achieve three-dimensional synchronous control of the spatial position of the pre-embedded sleeves. The elevation adjustment components employ a helical transmission mechanism of adjusting bolts and nuts, enabling precise fine-tuning of the vertical elevation of the pre-embedded sleeves while providing reliable anti-buoyancy protection through nut locking. The detachable connections between the various positioning mechanisms via connecting rods further enhance the overall rigidity and anti-disturbance capability of the system. This integrated design fundamentally solves the problem of cumulative errors in traditional processes, enabling batch positioning of multiple pre-embedded sleeves and significantly improving construction quality and efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the pre-embedded sleeve positioning device in an embodiment of this application.

[0028] Figure 2 This is a structural diagram used to illustrate the positioning mechanism.

[0029] Explanation of reference numerals in the attached drawings: 1. Positioning mechanism; 2. Adjusting frame; 21. First frame; 211. First adjusting groove; 22. Second frame; 221. Second adjusting groove; 3. Positioning beam; 4. Elevation adjusting component; 41. Positioning groove; 42. Adjusting bolt; 43. Adjusting nut; 5. First bolt assembly; 51. First bolt; 52. First nut; 6. Second bolt assembly; 61. Second bolt; 62. Second nut; 7. Laser positioning module; 71. Laser level; 8. Mounting base; 9. Connecting rod; 91. Connecting screw; 92. Connecting nut; 10. Embedded sleeve. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0031] Reference Figure 1 and Figure 2 This application discloses a pre-embedded sleeve positioning device, which is included but not limited to the positioning of pre-embedded sleeves for track beams. It can also be used in other building foundation structures that require accurate positioning of pre-embedded sleeves in rows or columns.

[0032] The pre-embedded sleeve positioning device includes at least two sets of positioning mechanisms 1. In this embodiment, the positioning mechanism 1 is preferably set to two sets to be suitable for the construction of medium-length track beams. Each set of positioning mechanisms 1 includes an adjustment frame 2 and several positioning beams 3. The positioning beams 3 are slidably set on the adjustment frame 2, so that the operator can flexibly adjust the installation position of each positioning beam 3 according to the design drawings, thereby controlling the spacing of the pre-embedded sleeves 10. The positioning beam 3 is equipped with an elevation adjustment component 4 for installing the pre-embedded sleeve 10. The elevation adjustment component 4 can be used to drive the pre-embedded sleeve 10 to move in the vertical direction in order to control the elevation of the top surface of the pre-embedded sleeve 10. In this embodiment, the positioning beam 3 is preferably provided as two beams, including but not limited to straight angle steel. The two positioning beams 3 are arranged at intervals along the length direction of the adjustment frame 2 and extend along its width direction.

[0033] The pre-embedded sleeve positioning device also includes a laser positioning module 7, which is mounted on one of the positioning mechanisms 1. In this embodiment, the laser positioning module 7 includes several laser levels 71, which are arranged one-to-one with the positioning beams 3 on the positioning mechanism 1. The laser levels 71 are fixed to the outside of the adjusting frame 2 by mounting bases 8, and their installation positions correspond to the installation positions of the positioning beams 3. In this embodiment, the mounting bases 8 include, but are not limited to, L-shaped angle steel, which are detachably fixed to the outside of the adjusting frame 2 by mounting bolts. The laser levels 71 are used to emit laser reference lines parallel to the arrangement direction of the positioning beams 3. Multiple laser reference lines are parallel to each other and are on the same horizontal plane, providing alignment references for all positioning beams 3 distributed on the same axis.

[0034] In actual construction, firstly, two sets of positioning mechanisms 1 are placed on the steel reinforcement skeleton of the track beam, and each adjustment frame 2 is initially adjusted according to the design width. Then, each laser level 71 is leveled and turned on, so that multiple laser reference lines are projected onto the design axis position, forming multiple verification references. Next, the construction personnel use these laser lines as references to synchronously adjust the positioning beams 3 on each set of positioning mechanisms 1, so that their centers are aligned with the laser lines, thereby completing the axis positioning of all pre-embedded sleeves 10. During this process, the spacing of the pre-embedded sleeves 10 is also determined by the sliding of the positioning beams 3. Finally, by operating the elevation adjustment piece 4 on each positioning beam 3, in conjunction with the level monitoring, the top surface elevation of the pre-embedded sleeves 10 is finely adjusted to the design elevation. The whole process realizes synchronous and batch control of the three dimensions of axis, spacing, and elevation, which greatly improves construction efficiency and quality.

[0035] The adjustment frame 2 is the basic load-bearing and width adjustment unit of the device. It adopts a modular design and includes a first frame 21 and two second frames 22. The two second frames 22 are slidably connected to both sides of the first frame 21 through sliding components, so that the width of the entire adjustment frame 2 can be infinitely adjusted to adapt to track beams of different specifications.

[0036] In this embodiment, the first frame 21 is I-shaped, including but not limited to being formed by welding angle steel to form an I-shaped angle steel frame; the second frame 22 is C-shaped, including but not limited to being formed by welding angle steel to form a C-shaped angle steel frame; the two C-shaped second frames 22 are arranged facing each other and nested on the two side flanges of the I-shaped first frame 21 to form a mortise and tenon joint; this unique structural design not only ensures the smoothness of the sliding process, but also utilizes the interlocking and restraint between the profiles to prevent the second frame 22 from warping, twisting or derailing when sliding and under stress, significantly enhancing the overall rigidity and stability of the adjustment frame 2.

[0037] The sliding assembly includes two first sliding grooves (not shown in the figure) formed on the first frame 21, a second sliding groove (not shown in the figure) formed on the second frame 22, and a first bolt assembly 5 passing through the first sliding groove and the second sliding groove. In this embodiment, the two first sliding grooves are respectively formed on the vertical surfaces of the upper and lower flanges of the I-shaped first frame 21 and are arranged along its length. Correspondingly, the second sliding groove is formed on the vertical surface of the corresponding flange of the C-shaped second frame 22. During assembly, it is ensured that the first sliding groove and the second sliding groove at least partially overlap to form a through channel. The first bolt assembly 5 includes a first bolt 51 and two first nuts 52. The first bolt 51 passes through the overlapping first sliding groove and second sliding groove. The first nuts 52 are threadedly connected to the first bolt 51. The two first nuts 52 abut against the outer walls of the first sliding groove and the second sliding groove, respectively. When the width needs to be adjusted, the first nuts 52 are loosened, and the second frame 22 can slide freely relative to the first frame 21. After adjusting to the required width, the first nuts 52 are tightened. At this time, the two first nuts 52 will forcefully clamp the flanges of the first frame 21 and the second frame 22 from both sides, thereby reliably locking the width of the adjustable frame 2 and ensuring that it does not deform during subsequent construction.

[0038] The positioning beam 3 is connected to the adjusting frame 2 through a similar sliding locking principle. Specifically, a first adjusting groove 211 is opened on the first frame 21, and a second adjusting groove 221 is opened on the second frame 22. In this embodiment, the two first adjusting grooves 211 are respectively opened on the horizontal plane of the upper and lower flanges of the I-shaped first frame 21 and are arranged along its length. Correspondingly, a second adjusting groove 221 is opened on the horizontal plane of the corresponding flange of the C-shaped second frame 22. During assembly, it is ensured that the first adjusting groove 211 and the second adjusting groove 221 at least partially overlap to form a through channel. The positioning beam 3 is fixed to the adjusting frame 2 by a second bolt assembly 6 passing through the first adjusting groove 211 and the second adjusting groove 221. The second bolt assembly 6 includes a second bolt 61 and two second nuts 62. The second bolt 61 passes through the first adjusting groove 211 and the second adjusting groove 221, and the second nuts 62 are threaded to the second bolt 61. The two second nuts 62 abut against the outer walls of the first adjusting groove 211 and the second adjusting groove 221, respectively. By loosening and tightening the second bolt assembly 6, the positioning beam 3 can be slid and fixed in the length direction of the adjusting frame 2, thereby controlling the installation spacing of the pre-embedded sleeve 10.

[0039] The elevation adjustment component 4 includes a positioning groove 41 formed on the flange of the positioning beam 3, and an adjustment bolt 42 and an adjustment nut 43 passing through the positioning groove 41. The lower end of the adjustment bolt 42 is used to connect with the top of the pre-embedded sleeve 10 (e.g., through its flange), and the upper end passes through the positioning groove 41 and cooperates with the adjustment nut 43. The adjustment nut 43 abuts against the upper side of the positioning groove 41 (i.e., the side away from the pre-embedded sleeve 10).

[0040] When the elevation of a pre-embedded sleeve 10 needs to be adjusted, the construction personnel only need to rotate the corresponding adjusting nut 43. According to the principle of screw pair transmission, the rotation of the adjusting nut 43 will drive the adjusting bolt 42 to make a vertical displacement together with the pre-embedded sleeve 10. During this process, the elevation of the top surface of the pre-embedded sleeve 10 can be monitored in real time by a level instrument to adjust it to the design value. After the adjustment is completed, the huge friction force generated between the adjusting nut 43 and the upper side of the positioning groove 41, combined with the strength of the rod of the adjusting bolt 42, constitutes a reliable locking mechanism that can resist the buoyancy and impact generated during concrete pouring and ensure the stability of the elevation throughout the construction process.

[0041] For the construction of long tracks, at least two sets of positioning mechanisms 1 can be detachably connected by connecting rods 9. The connecting rods 9 include adjustable-length connecting screws 91 and connecting nuts 92. The two ends of the connecting screws 91 are respectively inserted into the adjustment frames 2 of the two sets of positioning mechanisms 1 and locked in place by the connecting nuts 92. Multiple independent positioning mechanisms 1 can be quickly interlocked into a rigid whole on the construction site by connecting screws 91 and connecting nuts 92. This connection method not only improves the anti-disturbance capability of the entire device and prevents the displacement of a single positioning mechanism 1 under the impact of concrete, but also ensures the relative positional accuracy between all positioning mechanisms 1, thereby ensuring the goal of collinearity of the entire line of pre-embedded sleeves 10 on a macro scale.

[0042] The implementation principle of this application embodiment is as follows: First, determine the number of positioning mechanisms 1 required according to the design length of the track beam, and arrange the positioning mechanisms 1 on the steel reinforcement skeleton of the track beam according to the design spacing to ensure that each positioning mechanism 1 is roughly aligned; according to the actual width requirement of the track beam, the operator loosens the two first nuts 52 of the first bolt assembly 5 so that the second frame 22 can slide relative to the first frame 21, and smoothly adjusts the adjustment frame 2 to the design width, and then tightens the first nuts 52 to reliably lock the adjustment frame 2 using the double nut clamping mechanism; Laser levels 71 are fixed on the mounting bases 8 of each positioning mechanism 1. All laser levels 71 are leveled to be on the same horizontal plane. The laser levels 71 are turned on and emit multiple parallel and coplanar laser reference lines. These reference lines are projected onto the design axis position to form multiple verification references. The construction personnel use the laser reference lines as visual references and simultaneously adjust the positioning beams 3 on each group of positioning mechanisms 1. By loosening the two second nuts 62 of the second bolt assembly 6, the positioning beams 3 slide along the through channel formed by the first adjustment groove 211 and the second adjustment groove 221 until the center lines of all positioning beams 3 are aligned with the corresponding laser reference lines. During this process, the spacing of the pre-embedded sleeves 10 is controlled by the sliding position of the positioning beams 3. After adjustment, the second nuts 62 are locked. By rotating the adjusting nut 43 of the elevation adjusting component 4, the adjusting bolt 42 is driven to move the pre-embedded sleeve 10 to make fine vertical displacement. Each pre-embedded sleeve 10 can be independently fine-tuned to ensure that the top surface elevation of all pre-embedded sleeves 10 reaches the design elevation. The adjacent positioning mechanisms 1 are interlocked into a rigid whole by using the connecting rod 9, and the overall stability is ensured by tightening the connecting nut 92. After verifying that all positioning parameters are correct, concrete pouring is carried out. The device is removed after the concrete has initially set. After cleaning and maintenance, it can be reused in the next construction section.

[0043] This application constructs a distributed positioning system by combining modular positioning mechanisms 1; utilizes an adjustable angle steel adjustment frame 2 to achieve flexible adaptation of the device width; controls the spacing of the pre-embedded sleeves 10 through a sliding positioning beam 3; achieves fine adjustment of the elevation of the pre-embedded sleeves 10 with the help of elevation adjustment components 4; and finally ensures the collinearity of the axes of all pre-embedded sleeves 10 through a unified laser reference. This integrated design realizes the synchronous control of the spatial three-dimensional coordinates of multiple pre-embedded sleeves 10, fundamentally solving the technical problems of large cumulative errors, low construction efficiency, and difficulty in quality control in traditional processes. Through the above innovative design, construction efficiency can be significantly improved while ensuring construction quality, and it has important engineering application value.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pre-embedded sleeve positioning device, characterized in that: It includes at least two sets of positioning mechanisms (1), each set of positioning mechanisms (1) includes an adjustment frame (2) and several positioning beams (3), the positioning beams (3) are slidably arranged on the adjustment frame (2), and the positioning beams (3) are provided with elevation adjustment components (4) for installing the pre-embedded sleeve (10); It also includes a laser positioning module (7), which is disposed on one of the positioning mechanisms (1). The laser positioning module (7) is used to emit a laser reference line parallel to the arrangement direction of the positioning beams (3).

2. The pre-embedded sleeve positioning device according to claim 1, characterized in that: The elevation adjustment component (4) includes a positioning groove (41) on the positioning beam (3), and an adjustment bolt (42) and an adjustment nut (43) passing through the positioning groove (41). One end of the adjustment bolt (42) is used to connect with the pre-embedded sleeve (10), and the other end is connected with the adjustment nut (43). The adjustment nut (43) abuts against the side of the positioning groove (41) away from the pre-embedded sleeve (10).

3. The pre-embedded sleeve positioning device according to claim 1, characterized in that: The adjustment frame (2) includes a first frame (21) and two second frames (22), the two second frames (22) being slidably connected to both sides of the first frame (21) by a sliding component.

4. The pre-embedded sleeve positioning device according to claim 3, characterized in that: The first frame (21) is arranged in an I-shape, the second frame (22) is arranged in a C-shape, and the two second frames (22) are arranged facing each other.

5. The pre-embedded sleeve positioning device according to claim 3, characterized in that: The sliding assembly includes a first sliding groove formed on the first frame (21), a second sliding groove formed on the second frame (22), and a first bolt assembly (5) passing through the first sliding groove and the second sliding groove, wherein the first sliding groove and the second sliding groove at least partially overlap.

6. The pre-embedded sleeve positioning device according to claim 5, characterized in that: The first bolt assembly (5) includes a first bolt (51) and a first nut (52). The first bolt (51) passes through the first sliding groove and the second sliding groove. The first nut (52) is threadedly connected to the first bolt (51) and abuts against the outer walls of the first sliding groove and the second sliding groove, respectively.

7. The pre-embedded sleeve positioning device according to claim 3, characterized in that: The first frame (21) is provided with a first adjustment groove (211), and the second frame (22) is provided with a second adjustment groove (221). The first adjustment groove (211) and the second adjustment groove (221) overlap at least partially. The positioning beam (3) is fixed to the adjustment frame (2) by a second bolt assembly (6) passing through the first adjustment groove (211) and the second adjustment groove (221).

8. The pre-embedded sleeve positioning device according to claim 7, characterized in that: The second bolt assembly (6) includes a second bolt (61) and a second nut (62). The second bolt (61) passes through the first adjustment groove (211) and the second adjustment groove (221). The second nut (62) is threadedly connected to the second bolt (61) and abuts against the outer walls of the first adjustment groove (211) and the second adjustment groove (221), respectively.

9. The pre-embedded sleeve positioning device according to claim 1, characterized in that: The laser positioning module (7) is fixed to the outside of the adjustment frame (2) by the mounting base (8).

10. The pre-embedded sleeve positioning device according to claim 1, characterized in that: The at least two sets of positioning mechanisms (1) are detachably connected by connecting rods (9).

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