A tunnel arch installation laser positioning device

Abstract

The utility model relates to positioning device technical field especially relates to a kind of tunnel arch mounting laser positioning device.The technical scheme, including the arch body of installation and the arch bracket for the arch body of installation and the arch bracket, further include fixed plate, the both ends of fixed plate are rotatably provided with mounting seat, the bottom surface of fixed plate is respectively fixedly provided with a group of connecting seat, connecting seat is rotatably provided with connecting block respectively, the lower end of connecting block is fixedly provided with the laser positioning assembly for the arch body installation positioning;Supporting plate is fixedly arranged on the side of fixed plate, and the adjusting assembly for the angle adjustment of laser positioning assembly is provided on supporting plate.The utility model realizes the multidirectional position adjustment and stable fixation of laser positioner, replaces artificial total station instrument point indicating operation, directly projects laser reference line and reference point, avoids paint indicating blur damage, improves the positioning accuracy of arch installation and blasthole arrangement.

Description

Technical Field

[0001] This utility model relates to the field of positioning device technology, and in particular to a laser positioning device for tunnel arch frame installation. Background Technology

[0002] In drill-and-blast construction of highways, railways, subways, and hydraulic tunnels, the arch frame, as the core component of the tunnel support system, plays a crucial role in resisting the pressure of the surrounding rock, preventing tunnel collapse, and ensuring the stability of the construction space. The existing positioning methods for arch support and associated blast hole layout generally employ manual total station projection. Surveying engineers bring a total station to the tunnel site, establish calibration, and project the points. Key points such as the arch support installation reference points and blast hole locations are then marked with paint on the surrounding rock or working face. Construction workers then carry out arch support and drilling operations based on these marked points. This process relies entirely on manual operation and frequent on-site work. Surveyors must be available day and night, repeatedly entering and exiting the tunnel daily for repeated projection and verification. This is not only extremely labor-intensive, but also prone to positioning errors due to manual calibration and the susceptibility of paint markings to obscuring or damage during construction. These errors can easily lead to misalignment of the arch support and deviation of the blast hole layout, resulting in significant economic losses. Furthermore, the complex construction environment within tunnels presents safety hazards such as collapses, rockfalls, and excessive levels of harmful gases, significantly increasing the personal safety risks for surveyors working on-site. Therefore, this utility model proposes a laser positioning device for tunnel arch support installation. Utility Model Content

[0003] The purpose of this utility model is to address the problems in the existing technology of manual total station point projection for arch support and borehole layout, which relies on high-frequency manual on-site operations, resulting in high labor intensity, easy positioning errors, and high safety risks for surveyors due to the complex environment of tunnels. This invention proposes a laser positioning device for tunnel arch support installation.

[0004] The technical solution of this utility model is as follows: A laser positioning device for installing a tunnel arch frame includes an arch frame body to be installed and an arch frame bracket for supporting the arch frame body. It also includes a fixing plate, with mounting seats rotatably mounted at both ends of the fixing plate. A set of connecting seats is fixedly mounted on the bottom surface of the fixing plate, and connecting blocks are rotatably mounted on the connecting seats. A laser positioning component for positioning the arch frame body is fixedly mounted at the lower end of each connecting block. A support plate is fixedly mounted on one side of the fixing plate, and an adjustment component for adjusting the angle of the laser positioning component is mounted on the support plate.

[0005] Optionally, the laser positioning assembly includes a connecting plate fixedly disposed at the lower end of the connecting block, an arc-shaped frame fixedly disposed on the bottom surface of the connecting plate, a limiting seat fixedly disposed on the bottom surface of the connecting plate, a shaft rotatably disposed on the limiting seat, a threaded rod movably sleeved at the lower end of the shaft, a movable sleeve block fixedly connected at one end of the threaded rod, a positioning bolt threaded through the movable sleeve block, a laser positioner disposed on the movable sleeve block, and a limiting nut threadedly sleeved on the outer wall of the shaft.

[0006] Optionally, the adjusting assembly includes a screw threaded through a support plate, one end of which is rotatably connected to a toothed plate.

[0007] Optionally, the adjustment assembly further includes a fixing seat fixedly disposed on the upper surface of the connecting plate, and a gear is fixedly disposed between the fixing seats, with the gear plate meshing with the gear.

[0008] Optionally, a set of arc-shaped guide frames are fixedly provided on the bottom surface of the connecting plate, and a guide block is fixedly sleeved on the outer wall of the threaded rod, with the guide block located between the arc-shaped frame and the arc-shaped guide frames.

[0009] Optionally, the outer wall of the arc-shaped frame is provided with multiple anti-slip grooves.

[0010] Optionally, a card holder is fixedly provided on the movable socket block, and a card block is fixedly provided on the laser positioner, wherein the card block is movably engaged with the card holder.

[0011] In summary, this application includes at least one of the following beneficial technical effects:

[0012] This utility model utilizes an adjustable connection structure of connecting plate, arc frame, shaft, threaded rod and movable sleeve block in the laser positioning assembly, combined with quick snap-fit ​​design of card seat and card block and the limiting and guiding effect of arc guide frame on guide block, to achieve multi-directional position adjustment and stable fixation of laser positioner, replacing manual total station point marking operation, directly projecting laser reference line and reference point, avoiding blurring and damage of paint marking, and improving the positioning accuracy of arch frame installation and blast hole layout;

[0013] Furthermore, this utility model achieves rapid angle adjustment and locking of the laser positioning component by adjusting the structure of the screw driving gear plate and the gear meshing transmission on the fixed seat, combined with the rotational connection design of the fixed plate, connecting seat, and connecting block. This eliminates the need for surveyors to repeatedly set up stations and verify on-site, reducing the intensity of high-frequency on-site operations and the frequency of surveyors entering and exiting the tunnel, thus avoiding personal safety risks caused by safety hazards inside the tunnel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a laser positioning device installed on a tunnel arch frame.

[0015] Figure 2 yes Figure 1 A schematic diagram of the structure of the laser positioning component;

[0016] Figure 3 yes Figure 2 A schematic diagram of the disassembled structure of the laser positioning component;

[0017] Figure 4 yes Figure 2 A schematic diagram of the structure of the adjustment component;

[0018] Figure 5 yes Figure 3 A partial structural diagram of the laser positioning component.

[0019] Figure label:

[0020] 1. Arch frame body; 2. Arch frame bracket; 3. Fixing plate; 4. Mounting base; 5. Connecting base; 6. Connecting block;

[0021] 7. Laser positioning assembly; 71. Connecting plate; 72. Arc frame; 73. Limit seat; 74. Shaft; 75. Threaded rod; 76. Movable sleeve block; 77. Positioning bolt; 78. Laser positioner; 79. Limit nut;

[0022] 8. Support plate;

[0023] 9. Adjustment assembly; 91. Screw; 92. Gear plate; 93. Fixing base; 94. Gear;

[0024] 10. Arc-shaped guide frame; 11. Guide block; 12. Anti-slip groove; 13. Card seat; 14. Card block. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0026] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0027] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example

[0031] like Figure 1 and Figure 2 As shown, the present invention proposes a laser positioning device for installing a tunnel arch frame, including an arch frame body 1 to be installed and an arch frame bracket 2 for supporting the arch frame body 1. The arch frame body 1 can provide stable support for the tunnel, and the arch frame bracket 2 can provide support during the installation of the arch frame body 1 to ensure stable installation of the arch frame body 1. It also includes a fixing plate 3, and mounting seats 4 are respectively rotatably provided at both ends of the fixing plate 3 through pins, so that the mounting seats 4 can be adapted to the installation requirements of the arc-shaped surface at the top of the tunnel.

[0032] Furthermore, a set of connecting seats 5 are fixedly installed on the bottom surface of the fixing plate 3, and connecting blocks 6 are rotatably installed on the connecting seats 5 via pins. A support plate 8 is fixedly installed on one side of the fixing plate 3, and the support plate 8 is designed with an "L" shape.

[0033] like Figure 2 , Figure 3 and Figure 5As shown, a laser positioning component 7 for positioning the arch frame body 1 is fixedly installed at the lower end of the connecting block 6. The laser positioning component 7 includes a connecting plate 71 fixedly installed at the lower end of the connecting block 6. A set of arc-shaped guide frames 10 are fixedly installed on the bottom surface of the connecting plate 71. An arc-shaped frame 72 is fixedly installed on the bottom surface of the connecting plate 71. Multiple anti-slip grooves 12 are opened on the outer wall of the arc-shaped frame 72. A limit seat 73 is fixedly installed on the bottom surface of the connecting plate 71. A shaft 74 is rotatably installed on the limit seat 73. A threaded rod 75 is movably sleeved at the lower end of the shaft 74. The shaft 74 enables the threaded rod 75 to rotate stably. A limit block is fixedly installed at the lower end of the threaded rod 75 to prevent the movable sleeve block 76 from disengaging from the threaded rod 75. A guide block 11 is fixedly sleeved on the outer wall of the threaded rod 75. The guide block 11 is located between the arc-shaped frame 72 and the arc-shaped guide frame 10 and can guide the threaded rod 75 to make its movement more stable. One end of the shaft 74 is fixedly connected to a movable sleeve block 76. A positioning bolt 77 is threaded through the movable sleeve block 76, which can position the movable sleeve block 76 on the threaded rod 75, thereby facilitating the adjustment of the position of the movable sleeve block 76. A laser positioner 78 is provided on the movable sleeve block 76, and the laser positioner 78 can accurately position the installation position of the arch frame body 1. The laser positioner 78 is existing technology and will not be described in detail here. A retainer 13 is fixedly provided on the movable sleeve block 76, and a retainer block 14 is fixedly provided on the laser positioner 78. The retainer block 14 is movably engaged with the retainer 13, which facilitates the disassembly and assembly of the laser positioner 78, thereby facilitating the change of the positioning position. A limit nut 79 is threadedly sleeved on the outer wall of the shaft 74, and the limit nut 79 can be connected to the anti-slip groove 12 to increase the friction between the limit nut 79 and the arc frame 72, which facilitates the limiting of the laser positioner 78.

[0034] like Figure 2 and Figure 4 As shown, the support plate 8 is provided with an adjustment component 9 for adjusting the angle of the laser positioning component 7. The adjustment component 9 includes a screw 91 threaded through the support plate 8. One end of the screw 91 is rotatably connected to a toothed plate 92, which enables the screw 91 to drive the toothed plate 92 to move.

[0035] Furthermore, the adjustment assembly 9 also includes a fixed base 93 fixedly disposed on the upper surface of the connecting plate 71. A gear 94 is fixedly disposed between the fixed bases 93. The gear plate 92 is meshed with the gear 94, so that by meshing with each other, the gear plate 92 can drive the gear 94 to rotate, thereby adjusting the positioning angle of the laser positioner 78.

[0036] The working principle of this embodiment is as follows: First, the mounting bases 4 at both ends of the fixing plate 3 are installed on the top of the tunnel with bolts. The locking block 14 of the laser locator 78 is aligned with the locking base 13 of the movable sleeve block 76, and the laser locator 78 is turned on.

[0037] Subsequently, the threaded rod 75 is pushed, causing the shaft 74 to rotate on the limiting seat 73. Simultaneously, the threaded rod 75 causes the laser positioner 78 to adjust its projection angle. During the movement of the threaded rod 75, the guide block 11 slides between the arc-shaped frame 72 and the arc-shaped guide frame 10, achieving angle guidance and limiting. After adjusting to the appropriate angle, the limiting nut 79 is rotated. The limiting nut 79 engages with the threaded rod 75, causing it to press tightly against the anti-slip groove 12 on the outer wall of the arc-shaped frame 72, thereby positioning the laser positioner 78.

[0038] Next, loosen the positioning bolt 77 on the movable sleeve block 76 and pull the movable sleeve block 76 to slide on the threaded rod 75. The movable sleeve block 76 drives the laser positioner 78 to move to a suitable positioning height through the card seat 13 and the card block 14. Then tighten the positioning bolt 77 on the movable sleeve block 76 to position the laser positioner 78.

[0039] Then, the screw 91 on the support plate 8 is rotated, and the screw 91 drives the toothed plate 92 to move. The meshing transmission between the toothed plate 92 and the gear 94 on the fixed seat 93 drives the connecting plate 71 and the laser positioning assembly 7 to rotate around the rotation node of the connecting block 6 and the connecting seat 5. The connecting seat 5 and the connecting block 6 drive the laser positioner 78 to move to a suitable angle and stop rotating the screw 91.

[0040] like Figure 1 As shown, the arch frame body 1 is supported and installed by the arch frame bracket 2. At this time, the installation position of the arch frame body 1 and the arch frame bracket 2 is adjusted according to the laser projected by the laser locator 78, so that the contact surface between the arch frame body 1 and the arch frame bracket 2 coincides with the laser projected by the laser locator 78, thus ensuring the accuracy of the installation position of the arch frame body 1.

[0041] The above specific embodiments are merely optional embodiments of the laser positioning device for tunnel arch installation according to this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A laser positioning device for installing a tunnel arch frame, comprising an arch frame body (1) to be installed and an arch frame bracket (2) for supporting the arch frame body (1), characterized in that, Also includes: A fixed plate (3) is provided with mounting seats (4) at both ends of the fixed plate (3). A set of connecting seats (5) is fixedly provided on the bottom surface of the fixed plate (3). A connecting block (6) is rotatably provided on the connecting seat (5). A laser positioning component (7) for installing and positioning the arch frame body (1) is fixedly provided at the lower end of the connecting block (6). A support plate (8) is fixedly installed on one side of the fixed plate (3), and an adjustment component (9) for adjusting the angle of the laser positioning component (7) is provided on the support plate (8).

2. The laser positioning device for tunnel arch frame installation according to claim 1, characterized in that, The laser positioning assembly (7) includes a connecting plate (71) fixedly disposed at the lower end of the connecting block (6). An arc frame (72) is fixedly disposed on the bottom surface of the connecting plate (71). A limiting seat (73) is fixedly disposed on the bottom surface of the connecting plate (71). A shaft (74) is rotatably disposed on the limiting seat (73). A threaded rod (75) is movably sleeved on the lower end of the shaft (74). A movable sleeve block (76) is fixedly connected to one end of the threaded rod (75). A positioning bolt (77) is threaded through the movable sleeve block (76). A laser positioner (78) is disposed on the movable sleeve block (76). A limiting nut (79) is threadedly sleeved on the outer wall of the shaft (74).

3. The laser positioning device for installing a tunnel arch frame according to claim 2, characterized in that, The adjustment assembly (9) includes a screw (91) threaded through the support plate (8), and one end of the screw (91) is rotatably connected to a toothed plate (92).

4. The laser positioning device for installing a tunnel arch frame according to claim 3, characterized in that, The adjustment assembly (9) also includes a fixed seat (93) fixedly disposed on the upper surface of the connecting plate (71), and a gear (94) is fixedly disposed between the fixed seats (93), and the gear plate (92) meshes with the gear (94).

5. A laser positioning device for installing a tunnel arch frame according to claim 4, characterized in that, A set of arc-shaped guide frames (10) are fixedly provided on the bottom surface of the connecting plate (71), and a guide block (11) is fixedly sleeved on the outer wall of the threaded rod (75). The guide block (11) is located between the arc-shaped frame (72) and the arc-shaped guide frame (10).

6. A laser positioning device for installing a tunnel arch frame according to claim 4, characterized in that, The outer wall of the arc-shaped frame (72) is provided with multiple anti-slip grooves (12).

7. A laser positioning device for tunnel arch frame installation according to claim 4, characterized in that, The movable socket block (76) is fixedly provided with a card seat (13), and the laser positioner (78) is fixedly provided with a card block (14), and the card block (14) is movably engaged with the card seat (13).

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