Foot-lock bolt positioning tool for tunnel construction

Abstract

The utility model discloses a feet-lock bolt positioning tool for tunnel construction, which belongs to the technical field of tunnel construction and comprises a base, a height adjusting mechanism is arranged at the top of the base, a lifting seat is arranged on the height adjusting mechanism, two support frames are fixedly connected to the top surface of the lifting seat, and the top surface of the lifting seat is fixedly connected with the support frames. The inner sides of the top ends of the two supporting frames are rotationally connected with angle adjusting bases, and the top faces of the angle adjusting bases are fixedly connected with guide pipes. According to the utility model, the switch knob is rotated to drive the screw rod to rotate, and the screw rod and the lifting column are in threaded fit to drive the sliding rod to move up and down, so that the sliding rod slides in the sliding chute, and the angles of the angle adjusting seat and the guide pipe are adjusted; and the angles of the angle adjusting seat and the guide pipe are accurately controlled through the cooperation of the indicating rod and the angle graduated scale.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, and more specifically, to a positioning tool for the locking foot bolts used in tunnel construction. Background Technique

[0002] During the tunnel excavation support process of highways, railways, underground diversion tunnels, etc., high requirements are often placed on the safety, construction quality, and appearance during the construction process. For tunnel excavation in an environment with poor surrounding rock quality, tunnel bolt technology is required to form support for the excavated tunnel. The locking foot bolt technology is widely used in tunnel construction. Locking the feet in a tunnel means that after the upper bench excavation is completed and the arch support is erected, the feet of the arch support are fixed through the locking foot bolts, and during fixation, it is necessary to symmetrically fix on both sides of the feet of the arch support. The main function of the locking foot bolts is to limit the rigid displacement of the arch support as much as possible, stabilize the arch feet, and can also play a role in advanced support for the lower excavation, enabling it to bear the pressure caused by the surrounding rock deformation as early as possible, and ensuring the initial stability of the tunnel.

[0003] After retrieval, the utility model patent with the publication number of CN213683976U discloses a directional device for drilling the locking foot bolts of a tunnel arch support, including two directional structures. The two directional structures are used to be relatively arranged on both sides of the feet of the arch support, and the two directional structures are detachably connected to the arch support. The directional structure includes a base, on which a first directional plate and a second directional plate are provided. The first directional plate is provided with a first positioning hole, and the second directional plate is provided with a second positioning hole. The first positioning hole and the second positioning hole of the same directional structure are used to pass through the drill rod and adjust the angle of the drill rod; it can adjust and control the drilling direction of the drill rod through the first positioning hole and the second positioning hole, thereby controlling the direction of the locking foot bolts, avoiding angular deviation in the construction of the locking foot bolts, ensuring the construction quality of the locking foot bolts, and further ensuring the supporting ability of the locking foot bolts, and avoiding tunnel construction hazards. At the same time, it is detachably connected to the arch support, can be reused, and is convenient for construction.

[0004] However, the above patent still has the following deficiencies: Although the support member and the positioning ruler can support the drill rod and adjust the drilling direction of the drill rod, it is not convenient to control the specific angle of the drilling and not convenient to adjust the height of the drilling. For this reason, we propose a positioning tool for the locking foot bolts used in tunnel construction. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a positioning tool for the locking foot bolts used in tunnel construction.

[0006] To solve the above problems, the utility model adopts the following technical solutions:

[0007] A positioning tool for locking foot bolts in tunnel construction, including a base. A height adjustment mechanism is provided on the top of the base. A lifting seat is provided on the height adjustment mechanism. Two support frames are fixedly connected to the top surface of the lifting seat. An angle adjustment seat is rotatably connected to the inner sides of the tops of the two support frames. A guide tube is fixedly connected to the top surface of the angle adjustment seat. A chute is opened on the bottom surface of the angle adjustment seat. A support square tube is fixedly sleeved in the middle of the lifting seat. A screw rod is rotatably connected to the bottom of the inner cavity of the support square tube. A lifting column is threadedly sleeved on the outer side of the screw rod. The top end of the lifting column extends into the inner cavity of the chute and is fixedly connected with a sliding rod. The sliding rod is movably sleeved into the inner cavity of the chute. The bottom end of the screw rod extends to the bottom of the support square tube and is fixedly connected with a turning knob. An angle scale is provided on the outer side of one of the support frames. One end of the rotating shaft of the angle adjustment seat extends to the outside of the support frame and is fixedly connected with an indicating rod.

[0008] As a preferred solution of the present invention, the height adjustment mechanism includes a support box fixedly connected to the top surface of the base. A bidirectional lead screw is rotatably connected to the inner cavity of the support box. Moving seats are respectively threadedly sleeved on the outer sides of both ends of the bidirectional lead screw. Rotating frames are respectively rotatably connected to the top surfaces of the two moving seats. The tops of the two rotating frames are respectively rotatably connected to the bottom surface of the lifting seat. One end of the bidirectional lead screw extends to the outside of the support box and is fixedly connected with a knob.

[0009] As a preferred solution of the present invention, a plurality of connecting frames are fixedly connected to the top surface of the base. Connecting holes are opened in the plurality of connecting frames.

[0010] As a preferred solution of the present invention, a plurality of mounting holes are opened on the top surface of the base.

[0011] As a preferred solution of the present invention, the inner wall of the support square tube is in contact with the side surface of the lifting column.

[0012] As a preferred solution of the present invention, the side surface of the moving seat is in contact with the inner wall of the support box.

[0013] As a preferred solution of the present invention, the inner wall of the chute is in contact with the outer side surface of the sliding rod.

[0014] Compared with the prior art, the advantages of the present invention are as follows:

[0015] (1) In the present invention, by rotating the turning knob to drive the screw rod to rotate, the lifting column is driven to move up and down through the thread fit between the screw rod and the lifting column, so that the sliding rod slides in the chute, thereby adjusting the angle of the angle adjustment seat and the guide tube. When the angle adjustment seat rotates, the indicating rod is driven to rotate. The angle of the angle adjustment seat and the guide tube is controlled by the cooperation of the indicating rod and the angle scale, and the practicability is good.

[0016] (2) In the present utility model, by rotating the knob to drive the bidirectional lead screw to rotate, due to the threaded engagement between the bidirectional lead screw and the two moving seats, the two moving seats approach or move away from each other. The moving seats are used to drive the rotating frame, and the height of the lifting seat and the guiding tube is adjusted through the rotating frame, thereby realizing the adjustment of the height of the guiding tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure of the support box of the present utility model;

[0019] Figure 3 is a cross-sectional schematic diagram of the support box of the present utility model;

[0020] Figure 4 is a cross-sectional schematic diagram of the support square tube of the present utility model.

[0021] Explanation of the reference numerals in the figures:

[0022] 1, base; 2, height adjustment mechanism; 3, lifting seat; 4, support frame; 5, angle adjustment seat; 6, guiding tube; 7, sliding groove; 8, support square tube; 9, screw; 10, lifting column; 11, sliding rod; 12, toggle; 13, angle scale; 14, indicating rod; 15, support box; 16, bidirectional lead screw; 17, moving seat; 18, rotating frame; 19, knob; 20, mounting hole; 21, connecting frame; 22, connecting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Embodiment:

[0027] Please refer to Figures 1-4 , a positioning tooling for the locking foot bolt in tunnel construction, including a base 1. A height adjustment mechanism 2 is arranged on the top of the base 1. A lifting seat 3 is arranged on the height adjustment mechanism 2. Two support frames 4 are fixedly connected to the top surface of the lifting seat 3. An angle adjustment seat 5 is rotatably connected to the inner sides of the tops of the two support frames 4. A guide tube 6 is fixedly connected to the top surface of the angle adjustment seat 5. A chute 7 is opened on the bottom surface of the angle adjustment seat 5. A support square tube 8 is fixedly sleeved in the middle of the lifting seat 3. A screw rod 9 is rotatably connected to the bottom of the inner cavity of the support square tube 8. A lifting column 10 is threadedly sleeved on the outer side of the screw rod 9. The top end of the lifting column 10 extends into the inner cavity of the chute 7 and is fixedly connected with a sliding rod 11. The sliding rod 11 is movably sleeved into the inner cavity of the chute 7. The bottom end of the screw rod 9 extends to the bottom of the support square tube 8 and is fixedly connected with a knob 12. An angle scale 13 is arranged on the outer side of one support frame 4. One end of the rotating shaft of the angle adjustment seat 5 extends to the outside of the support frame 4 and is fixedly connected with an indicating rod 14.

[0028] Specifically, please refer to Figures 1 to 3 , the height adjustment mechanism 2 includes a support box 15 fixedly connected to the top surface of the base 1. A bidirectional lead screw 16 is rotatably connected to the inner cavity of the support box 15. Moving seats 17 are respectively threadedly sleeved on the outer sides of both ends of the bidirectional lead screw 16. Rotating frames 18 are respectively rotatably connected to the top surfaces of the two moving seats 17. The tops of the two rotating frames 18 are respectively rotatably connected to the bottom surface of the lifting seat 3. One end of the bidirectional lead screw 16 extends to the outside of the support box 15 and is fixedly connected with a knob 19.

[0029] In this embodiment, the threaded fit between the bidirectional lead screw 16 and the moving seats 17 is used to drive the two moving seats 17 to approach or move away from each other, and the moving seats 17 are used to drive the rotating frames 18 to drive the lifting seat 3 and the guide tube 6 to move up and down.

[0030] Specifically, please refer to Figure 2 , a plurality of connecting frames 21 are fixedly connected to the top surface of the base 1, and connecting holes 22 are opened on the plurality of connecting frames 21.

[0031] In this embodiment, two adjacent devices are fixed through the cooperation of the connecting frame 21, the connecting holes 22 and the bolts.

[0032] Specifically, please refer to Figure 1 , a plurality of mounting holes 20 are formed in the top surface of the base 1.

[0033] In this embodiment, the base 1 is installed on the ground by the cooperation of the mounting holes 20 and the screws.

[0034] Specifically, please refer to Figure 4 , the inner wall of the support square tube 8 is in contact with the side surface of the lifting column 10.

[0035] In this embodiment, the inner wall of the support square tube 8 is used to limit the lifting column 10, so that the lifting column 10 can only move along the axial direction of the screw rod 9.

[0036] Specifically, please refer to Figure 3 , the side surface of the moving seat 17 is in contact with the inner wall of the support box 15.

[0037] In this embodiment, the inner wall of the support box 15 is used to limit the moving seat 17, so that the moving seat 17 can only move along the axial direction of the bidirectional lead screw 16.

[0038] Specifically, please refer to Figure 3 and Figure 4 , the inner wall of the sliding groove 7 is in contact with the outer side surface of the sliding rod 11.

[0039] In this embodiment, the stability of the sliding rod 11 in the inner cavity of the sliding groove 7 is ensured.

[0040] Working principle: When in use, first place the device at the position in the tunnel where drilling and installing the foot-locking bolts are required, and fix the device in the tunnel through the cooperation of the mounting holes 20 and the screws. Then rotate the knob 19 to drive the bidirectional lead screw 16 to rotate. Through the threaded cooperation between the bidirectional lead screw 16 and the two moving seats 17, the two moving seats 17 approach or move away from each other. The moving seat 17 is used to drive the rotating frame 18, and the height of the lifting seat 3 and the guide tube 6 is adjusted through the rotating frame 18. Then rotate the toggle 12 to drive the screw rod 9 to rotate. Through the threaded cooperation between the screw rod 9 and the lifting column 10, the sliding rod 11 moves up and down, so that the sliding rod 11 slides in the sliding groove 7, thereby adjusting the angles of the angle adjusting seat 5 and the guide tube 6. At the same time, when the angle adjusting seat 5 rotates, the indicating rod 14 rotates. The cooperation between the indicating rod 14 and the angle scale 13 is used to accurately control the angles of the angle adjusting seat 5 and the guide tube 6. Finally, insert the drill rod into the guide tube 6 for drilling, and install the foot-locking bolts in the drilled holes, and that's it.

[0041] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its improved concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A locking foot anchor positioning tool for tunnel construction, comprising a base (1), characterized in that: The top of the base (1) is provided with a height adjustment mechanism (2), and a lifting seat (3) is provided on the height adjustment mechanism (2). The top surface of the lifting seat (3) is fixedly connected to two support frames (4), and the inner sides of the top ends of the two support frames (4) are rotatably connected to an angle adjustment seat (5), and the top surface of the angle adjustment seat (5) is fixedly connected to a guide tube (6), and the bottom surface of the angle adjustment seat (5) is provided with a slide groove (7), and the middle part of the lifting seat (3) is fixedly sleeved with a supporting square tube (8), and the bottom of the inner cavity of the supporting square tube (8) is rotatably connected to A screw rod (9), the outer side of the screw rod (9) is threadedly sleeved with a lifting column (10), the top end of the lifting column (10) extends to the inner cavity of the slide groove (7) and is fixedly connected to a sliding rod (11), the sliding rod (11) is movably sleeved to the inner cavity of the slide groove (7), the bottom end of the screw rod (9) extends to the bottom of the supporting square tube (8) and is fixedly connected to a lever (12), an angle scale (13) is arranged on the outer side of the support frame (4), and one end of the rotating shaft of the angle adjustment seat (5) extends to the outside of the support frame (4) and is fixedly connected to an indicating rod (14).

2. The locking foot anchor rod positioning tool for tunnel construction according to claim 1, characterized in that: The height adjustment mechanism (2) comprises a support box (15) fixedly connected to the top surface of the base (1); the inner cavity of the support box (15) is rotatably connected to a bidirectional screw rod (16); the outer sides of both ends of the bidirectional screw rod (16) are respectively threadedly sleeved with moving seats (17); the top surfaces of the two moving seats (17) are respectively rotatably connected to rotating frames (18); the top ends of the two rotating frames (18) are respectively rotatably connected to the bottom surface of the lifting seat (3); one end of the bidirectional screw rod (16) extends to the outside of the support box (15) and is fixedly connected to a knob (19).

3. The locking foot anchor rod positioning tool for tunnel construction according to claim 1, characterized in that: A plurality of connection frames (21) are fixedly connected to the top surface of the base (1), and connection holes (22) are provided on the plurality of connection frames (21).

4. The locking foot anchor rod positioning tool for tunnel construction according to claim 1, characterized in that: The top surface of the base (1) is provided with a plurality of mounting holes (20).

5. The locking foot anchor rod positioning tool for tunnel construction according to claim 1, characterized in that: The inner wall of the supporting square tube (8) is in contact with the side surface of the lifting column (10).

6. The locking foot anchor rod positioning tool for tunnel construction according to claim 2, characterized in that: The side surface of the movable seat (17) is in contact with the inner wall of the supporting box (15).

7. The locking foot anchor rod positioning tool for tunnel construction according to claim 1, characterized in that: The inner wall of the slide groove (7) and the outer side surface of the slide rod (11) are in contact with each other.

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