A round tunnel guide hole positioning support device

Abstract

The utility model relates to positioning support technical field especially relates to a circular tunnel guide hole positioning support device. The utility model provides a circular tunnel guide hole positioning support device, including rotating frame, support platform, rotating table, controller, support frame, laser instrument, extension rod, universal wheel and open and close subassembly, three rotating frames are connected with the interval along the circumference and are rotatably connected in the bottom of support platform, the extension rod is slidably connected with the axial sliding fit in the bottom of rotating frame, the universal wheel is rotatably assembled in the bottom of extension rod, the rotating table is horizontally rotatably connected in the top of support platform, the controller is installed in the left side of rotating table top, and the support frame is installed in the right side of rotating table top. Laser instrument is used as the benchmark guide element, and the horizontal rotation subassembly (0-360 degree stepless rotation) and the angle of inclination adjusting subassembly (±45 degree accurate regulation) are combined, can realize the all -round regulation and control of guide hole space angle, effectively guarantee the consistency of the drilling direction and the design axis, reduce the tunnel construction deviation.

Description

Technical Field

[0001] This utility model relates to the field of positioning bracket technology, and in particular to a positioning bracket device for a circular tunnel guide hole. Background Technology

[0002] In the construction of circular tunnels, the precise positioning of the pilot hole is a crucial step in ensuring the quality of subsequent processes such as support structure installation and pipeline laying. Existing pilot hole positioning devices generally suffer from the following technical deficiencies:

[0003] First, the structure lacks adaptability. Traditional positioning supports mostly adopt fixed support structures, which are bulky when deployed, making transportation and deployment difficult in the confined space of tunnels. Moreover, the deployment and retrieval process relies on manual disassembly and assembly, which is not only time-consuming and labor-intensive, but also difficult to adapt to the rapid erection requirements under complex terrain conditions, seriously restricting construction efficiency.

[0004] Secondly, the positioning accuracy and adjustment performance are lacking. Existing laser positioning equipment relies heavily on manual operation for angle adjustment, and horizontal rotation and pitch angle adjustments often employ a stepped positioning method, failing to achieve stepless continuous control. This results in a limited range of guide angle adjustment (typically less than ±30°), making it difficult to match the construction requirements of guide holes with different inclination angles. Furthermore, the lack of a high-precision transmission mechanism leads to significant angle adjustment errors and insufficient spatial pointing accuracy of the laser baseline. This can easily cause deviations between the drilling axis and the designed trajectory, leading to uneven stress on the tunnel structure, rework, and other risks, severely impacting construction quality.

[0005] Therefore, developing a guide hole positioning device that combines convenient retraction and extension with high-precision adjustment performance has become the key to solving the current technological bottleneck. Utility Model Content

[0006] In order to overcome the shortcomings mentioned in the background art, this utility model provides a circular tunnel guide hole positioning bracket device.

[0007] The technical solution is as follows: A circular tunnel guide hole positioning support device includes a rotating frame, a support platform, a controller, a laser, an extension rod, casters, an opening and closing assembly, and an angle adjustment assembly. Three rotating frames are rotatably connected to the bottom of the support platform along the circumferential direction. An extension rod is slidably connected to the bottom of the rotating frame along the axial direction. Casters are rotatably mounted on the bottom of each extension rod. A rotating platform is rotatably connected to the top of the support platform. A controller is installed on the left side of the top of the rotating platform. A support frame is installed on the right side of the top of the rotating platform. A laser is rotatably connected to the upper end of the support frame. The laser is electrically connected to the controller. An opening and closing assembly is provided at the bottom of the support platform. An angle adjustment assembly is provided on the support frame.

[0008] As an improvement to the above solution, both the rotating frame and the extension rod are made of 6061-T6 aluminum alloy profiles and the surface is treated with hard anodizing.

[0009] As an improvement to the above solution, the opening and closing assembly includes a first motor, a screw, a lifting block, a hinge frame, and a support block. The first motor is embedded in the middle of the bottom of the support platform. The output shaft of the first motor is coaxially connected to the screw. The lifting block is threaded onto the screw. Three hinge frames are rotatably connected to the lifting block along the circumferential direction. Support blocks are fixedly connected to the upper side of each hinge frame. The movable end of the hinge frame is rotatably connected to the support block on the corresponding side. The first motor is electrically connected to the controller.

[0010] As an improvement to the above solution, the tilt adjustment assembly includes a connecting frame, an electric slide rail, a slider, and a guide slot. The electric slide rail is symmetrically installed on the right side of the support frame, and a slider is slidably connected between the two electric slide rails. A guide slot is symmetrically connected to the top of the slider. The connecting frame is connected to the right end of the laser instrument. The connecting frame is movably connected to the two guide slots. The electric slide rail is electrically connected to the controller.

[0011] As an improvement to the above solution, the positioning bracket also includes a horizontal rotation component, which includes a second motor, a gear and a gear ring. The second motor is installed on the top left side of the support platform. The output shaft of the second motor is coaxially connected to the gear. The gear ring is connected to the outside of the rotating platform. The gear ring and the gear form a meshing transmission. The second motor is electrically connected to the controller.

[0012] As an improvement to the above solution, the positioning bracket also includes an angle sensor and an electric push rod. An electric push rod is installed on the inner side of the lower part of the rotating frame. The telescopic rod of the electric push rod is fixedly connected to the extension rod on the corresponding side through a support plate. An angle sensor is installed in the middle of the top of the rotating table. Both the angle sensor and the electric push rod are electrically connected to the controller.

[0013] Beneficial effects: 1. The laser instrument, as a reference guiding element, combined with the horizontal rotation component (0-360° stepless rotation) and the tilt adjustment component (±45° precise adjustment), can realize all-round control of the spatial angle of the guide hole, effectively ensuring the consistency between the drilling direction and the design axis, and reducing tunnel construction deviation.

[0014] 2. The rotating frame can be automatically retracted and extended through the opening and closing components. When retracted, the size of the device is significantly reduced, making it easier to transport and store in the narrow space of the tunnel. When extended, the three-section support structure forms a stable triangular support. With the help of casters with self-locking function, the device can be quickly positioned and fixed, adapting to complex terrain conditions.

[0015] 3. The integrated tilt sensor and electric push rod form a closed-loop leveling system, which can monitor the horizontal status of the device in real time and automatically perform height compensation. Even in uneven ground environments, it can still ensure the levelness of the laser reference surface, avoid manual leveling errors, and improve positioning reliability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the support platform component of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the rotating platform, the second motor, and gears of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the electric push rod, extension rod, and universal wheel components of this utility model.

[0020] The following are the names of the components in the diagram: 1. Rotating frame, 2. Support platform, 3. First motor, 4. Screw, 5. Lifting block, 6. Hinge frame, 7. Support block, 8. Rotating platform, 81. Controller, 82. Tilt sensor, 9. Second motor, 10. Gear, 11. Gear ring, 12. Support frame, 13. Laser device, 14. Connecting frame, 15. Electric slide rail, 16. Slider, 17. Guide groove block, 18. Electric push rod, 19. Extension rod, 20. Caster wheel. Detailed Implementation

[0021] Example: A positioning support device for a circular tunnel guide hole, such as Figures 1-3 As shown, the system includes a rotating frame 1, a support platform 2, a rotating platform 8, a controller 81, a support frame 12, a laser instrument 13, an extension rod 19, casters 20, an opening and closing assembly, and a tilt adjustment assembly. Three rotating frames 1 are rotatably connected to the bottom of the support platform 2 at circumferential intervals via bearings. Extension rods 19 are axially slidably connected to the bottom of each rotating frame 19. Each extension rod 19 is rotatably fitted with a self-locking caster 20 at its bottom. The top of the support platform 2 is horizontally rotatably connected to the rotating platform 8. The controller 81 is bolted to the left side of the top of the rotating platform 8. The support frame 12 is installed on the right side of the top of the rotating platform 8. The laser instrument 13 is rotatably connected to the upper end of the support frame 12 via a pivot pin. The laser instrument 13 is electrically connected to the controller 81. An opening and closing assembly is located at the bottom of the support platform 2, and a tilt adjustment assembly is located on the support frame 12. Both the rotating frame 1 and the extension rod 19 are made of 6061-T6 aluminum alloy profiles and have undergone hard anodizing treatment to enhance the wear resistance and corrosion resistance of the components, adapting to the harsh environment of high humidity and dust in tunnels.

[0022] like Figures 1-2As shown, the opening and closing assembly includes a first motor 3, a screw 4, a lifting block 5, a hinge frame 6, and a support block 7. The first motor 3 is installed with an embedded bolt in the middle of the bottom of the support platform 2. The output shaft of the first motor 3 is coaxially connected to the screw 4. The lifting block 5 is threaded onto the screw 4. Three hinge frames 6 are rotatably connected to the lifting block 5 along the circumferential direction. The upper side of the rotating frame 1 is bolted to the support block 7. The movable end of the hinge frame 6 is rotatably connected to the support block 7 on the corresponding side. The first motor 3 is electrically connected to the controller 81. By driving the screw 4 to rotate forward and backward, the axial displacement of the lifting block 5 is achieved, thereby driving the opening and closing action of the rotating frame 1.

[0023] like Figure 1 and Figure 3 As shown, the tilt adjustment assembly includes a connecting frame 14, an electric slide rail 15, a slider 16, and a guide slot 17. The electric slide rail 15 is symmetrically bolted on the right side of the support frame 12. The slider 16 is slidably connected between the two electric slide rails 15. The guide slot 17 is symmetrically connected to the top of the slider 16. The connecting frame 14 is fixedly connected to the right end of the laser device 13. The connecting frame 14 is movably connected to the two guide slots 17. The electric slide rail 15 is electrically connected to the controller 81. The tilt adjustment of the laser device 13 around the shaft pin is achieved by the lifting and lowering motion of the slider 16.

[0024] like Figure 1 and Figure 3 As shown, the positioning bracket also includes a horizontal rotation assembly, which includes a second motor 9, a gear 10, and a gear ring 11. The second motor 9 is bolted to the top left side of the support platform 2. The output shaft of the second motor 9 is coaxially keyed to the gear 10. The gear ring 11 is connected to the outside of the rotating platform 8. The gear ring 11 and the gear 10 form a meshing transmission. The second motor 9 is electrically connected to the controller 81. The rotating platform can achieve stepless horizontal rotation from 80° to 360° through the transmission of the gear 10.

[0025] When using this device, the controller 81 first outputs a control signal to the first motor 3, which drives the screw 4 to rotate, causing the lifting block 5 to move precisely downward along the axial direction. The hinge frame 6 pushes the support block 7, which in turn causes the three rotating frames 1 to unfold outward in a stable radial pattern. The extension rod 19 and the casters 20 unfold accordingly. The casters 20 assembly enables rapid positioning and transfer of the device on the construction site. Once in position, the self-locking function of the casters 20 is locked, providing a rigid support foundation. Next, according to the spatial coordinate requirements of the tunnel drilling guide hole, the controller 81 adjusts the laser instrument 13. The laser beam emitted by the laser instrument 13 serves as... The precise drilling reference axis can be adjusted in space via dual-axis independent adjustment: in the horizontal direction, the second motor 9 drives the gear 10 and gear ring 11 to drive the rotating table 8 and laser instrument 13 to rotate synchronously, achieving continuous adjustment of the azimuth angle; in the pitch direction, the electric slide rail 15 drives the slider 16 to rise and fall, and the guide slot block 17 and the connecting frame 14 slide together to make the laser instrument 13 rotate around the shaft pin to achieve tilt adjustment, meeting the drilling angle requirements; after the device is used up, the first motor 3 is controlled to run in reverse, and the screw 4 drives the lifting block 5 to move upward, and the hinge frame 6 pulls the rotating frame 1 to retract inward synchronously, reducing the storage volume of the device.

[0026] like Figure 1 and Figure 4 As shown, the positioning bracket also includes an inclination sensor 82 and an electric push rod 18. The electric push rod 18 is bolted to the inner side of the lower part of the rotating frame 1. The telescopic rod of the electric push rod 18 is fixedly connected to the extension rod 19 on the corresponding side through a support plate. The inclination sensor 82 is bolted to the middle of the top of the rotating platform 8. Both the inclination sensor 82 and the electric push rod 18 are electrically connected to the controller 81. When the rotating frame 1 is unfolded and supported on the ground, the inclination sensor 82 collects the attitude level data of the device in real time. The controller 81 outputs an adjustment command to the electric push rod 18 on the corresponding side according to the deviation value between the preset horizontal reference and the feedback value of the inclination sensor 82. By driving the telescopic rod of the electric push rod 18 to extend and retract precisely, the extension rod 19 is driven to slide independently along the axis of the rotating frame 1, realizing the height compensation of the corresponding support point, automatically eliminating the installation error caused by uneven ground, and ensuring that the entire device and the laser instrument 13 are always in a precise horizontal working reference state.

Claims

1. A positioning support device for a circular tunnel guide hole, characterized in that it includes: It has a rotating frame (1), a support platform (2), a rotating platform (8), a controller (81), a support frame (12), a laser (13), an extension rod (19), a caster wheel (20), an opening and closing assembly, and a tilt adjustment assembly. The bottom of the support platform (2) is circumferentially connected to three rotating frames (1). The bottom of the rotating frame (1) is axially connected to an extension rod (19). The bottom of the extension rod (19) is rotatably equipped with a caster wheel (20). The top of the support platform (2) is horizontally connected to a rotating platform (8). The controller (81) is installed on the left side of the top of the rotating platform (8). The support frame (12) is installed on the right side of the top of the rotating platform (8). The upper end of the support frame (12) is rotatably connected to a laser (13). The laser (13) is electrically connected to the controller (81). The bottom of the support platform (2) is provided with an opening and closing assembly, and the support frame (12) is provided with a tilt adjustment assembly.

2. The circular tunnel guide hole positioning support device as described in claim 1, characterized in that, The rotating frame (1) and the extension rod (19) are both made of 6061-T6 aluminum alloy profiles and the surface is treated with hard anodizing.

3. The circular tunnel guide hole positioning support device as described in claim 2, characterized in that, The opening and closing assembly includes a first motor (3), a screw (4), a lifting block (5), a hinge frame (6), and a support block (7). The first motor (3) is embedded in the middle of the bottom of the support platform (2). The output shaft of the first motor (3) is coaxially connected to the screw (4). The screw (4) is threadedly connected to the lifting block (5). Three hinge frames (6) are rotatably connected to the lifting block (5) along the circumferential direction. The upper side of the rotating frame (1) is fixedly connected to the support block (7). The movable end of the hinge frame (6) is rotatably connected to the support block (7) on the corresponding side. The first motor (3) is electrically connected to the controller (81).

4. The circular tunnel guide hole positioning support device as described in claim 3, characterized in that, The tilt adjustment assembly includes a connecting frame (14), an electric slide rail (15), a slider (16), and a guide slot (17). The electric slide rail (15) is symmetrically installed on the right side of the support frame (12). The slider (16) is slidably connected between the two electric slide rails (15). The guide slot (17) is symmetrically connected to the top of the slider (16). The connecting frame (14) is connected to the right end of the laser instrument (13). The connecting frame (14) is movably connected to the two guide slots (17). The electric slide rail (15) is electrically connected to the controller (81).

5. The circular tunnel guide hole positioning support device as described in claim 4, characterized in that, The positioning bracket also includes a horizontal rotation component, which includes a second motor (9), a gear (10) and a gear ring (11). The second motor (9) is installed on the top left side of the support platform (2). The output shaft of the second motor (9) is coaxially connected to the gear (10). The gear ring (11) is connected to the outside of the rotating platform (8). The gear ring (11) and the gear (10) form a meshing transmission. The second motor (9) is electrically connected to the controller (81).

6. The circular tunnel guide hole positioning support device as described in claim 5, characterized in that, The positioning bracket also includes an angle sensor (82) and an electric push rod (18). An electric push rod (18) is installed on the inner side of the lower part of the rotating frame (1). The telescopic rod of the electric push rod (18) is fixedly connected to the extension rod (19) on the corresponding side through a support plate. An angle sensor (82) is installed in the middle of the top of the rotating table (8). Both the angle sensor (82) and the electric push rod (18) are electrically connected to the controller (81).

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