Tunnel feet-lock bolt multi-angle directional control device

Abstract

The utility model discloses a tunnel feet-lock bolt multi-angle directional control device which comprises a drill pipe guide pipe and a fixing plate, the two ends of the fixing plate are respectively provided with a fastening bolt installation hole, and the two ends of the rear side of the fixing plate are respectively connected with a transverse adjusting plate through fastening bolts. An adjusting long hole is formed in the transverse adjusting plate in the length direction of the transverse adjusting plate; an angle adjusting side plate is vertically and fixedly arranged at the outer end of the transverse adjusting plate, and an arc-shaped hole is formed in the angle adjusting side plate; the two transverse adjusting plates are each connected with a drill rod guide pipe through a hinge plate, adjusting lug plates are fixedly arranged at the rear ends of the drill rod guide pipes, adjusting bolt mounting holes are formed in the adjusting lug plates, and the adjusting lug plates and the angle adjusting side plates are connected in a locked mode through adjusting bolts. The multi-angle directional control device for the tunnel feet-lock bolt is ingenious in structural arrangement, the height position and the width position of the drill rod guide pipe can be adjusted, and the multi-angle directional control device adapts to different driving positions.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction devices, in particular to a multi-angle directional control device for tunnel locking foot bolts. Background Technique

[0002] During the tunnel excavation support process of highways, railways, underground water 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 a 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 locking foot bolts, and the fixation needs to be symmetrically fixed 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. The length and driving angle of the locking foot bolts have a great influence on the supporting capacity of the support structure. Reasonable length and angle are not only beneficial to restricting the deformation of the surrounding rock, but also beneficial to exerting the bearing capacity of the support structure.

[0003] However, in the actual construction process, first, a drill rod is needed to drill a hole, and then the locking foot bolt is installed into the hole. Due to the influence of on-site construction environmental factors and the experience of construction workers themselves, the following problems will occur: 1. Inaccurate angle control: Due to changes in geographical location and the uncertainty of manual operation, relying solely on the experience of construction workers for layout, the angle of the locking foot bolts cannot be accurately guaranteed. This results in a large deviation between the actual layout angle of the locking foot bolts and the design value, thereby affecting its supporting effect. 2. Low construction efficiency: Manually adjusting the angle is not only time-consuming and laborious, but also difficult to meet the requirements of high-efficiency construction. Under a tight construction period, this construction method may become a bottleneck restricting the project progress. 3. Safety hazards: There are certain dangers when manually holding the locking foot bolts steadily for driving. With a slight deviation or negligence, a safety accident may be triggered. Therefore, people have developed locking foot bolt directional devices, and some locking foot bolt directional devices have also been reported in the open literature. For example,

[0004] 1. Chinese Patent: A Convenient Directional Device for Driving Screw-Type Tunnel Locking Foot Bolts, Application No.: 202321968715.7, Application Date: July 25, 2023, Abstract: A convenient directional device for driving screw-type tunnel locking foot bolts. The positioning steel plate is attached to the outer side of the flange plate of the I-shaped steel frame. The guide pipes are obliquely welded on both sides of the positioning steel plate. Side positioning plates are fixedly arranged on the guide pipes. Threaded holes are provided on the side positioning plates. A lead screw passes through the threaded holes. The inner end of the lead screw can be tightened against the web of the I-shaped steel frame for clamping. The structure of this utility model patent is simple and easy to install. It adopts a bolt-fixed conduit positioning control construction method. By clamping the web of the I-shaped steel frame, the fixing device has a good fixing effect on the locking foot anchor pipe, can achieve accurate angle and positioning of the locking foot anchor pipe, and the positioning steel plate is easy to process and weld; the use cost is low and it is easy for workers to operate.

[0005] 2. Chinese Patent: A Directional Device for Drilling Tunnel Arch Frame Locking Foot Bolts, Application No.: 202011374495.6, Application Date: November 30, 2020, Abstract: The present invention provides a directional device for drilling tunnel arch frame locking foot bolts, including two directional structures. The two directional structures are used to be relatively arranged on both sides of the feet of the arch frame. The two directional structures are detachably connected to the arch frame. The directional structure includes a base. A first directional plate and a second directional plate are provided on the base. The first directional plate is provided with a first positioning hole. 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 a drill pipe and adjust the angle of the drill pipe. It can adjust and control the drilling direction of the drill pipe through the first positioning hole and the second positioning hole, and then control the direction of the locking foot bolt, avoid angle deviation in the construction of the locking foot bolt, ensure the construction quality of the locking foot bolt, and then ensure the supporting capacity of the locking foot bolt, and avoid tunnel construction hazards. At the same time, it is detachably connected to the arch frame and can be reused, and the construction is convenient.

[0006] Through applied research, it is found that the position of the drill pipe guide pipe of the existing locking foot bolt directional device on the fixed seat is relatively fixed, and the height and lateral position cannot be adjusted as needed, which cannot well meet the construction requirements. In view of this, it is necessary to develop a multi-angle directional control device for tunnel locking foot bolts. Summary of the Invention

[0007] The purpose of the present utility model is to provide a multi-angle directional control device for tunnel locking foot bolts. The structure of this multi-angle directional control device for tunnel locking foot bolts is ingeniously arranged, and the height position and width position of the drill pipe guide pipe can be adjusted to adapt to different driving positions.

[0008] In order to achieve the purpose of the present utility model, the technical solutions adopted are as follows:

[0009] A multi-angle directional control device for tunnel locking foot bolts, comprising a drill pipe guide tube and a fixing plate for guiding the drill pipe to drill holes. A fastening bolt mounting hole is provided at each end of the fixing plate. Two transverse adjusting plates are respectively connected to the rear ends of the fixing plate through fastening bolts. An adjusting long hole is provided on the transverse adjusting plate along its length direction. The fastening bolt passes through the fastening bolt mounting hole and the adjusting long hole in sequence and is locked and connected through a fastening nut. A nut is welded on the side of the fastening bolt mounting hole away from the transverse adjusting plate or a nut is installed on the fastening bolt on the side of the fastening bolt mounting hole away from the transverse adjusting plate. The fastening bolt mounting hole can also be set as a threaded hole for clamping and connecting the fixing plate and the transverse adjusting plate together with the fastening nut, so as to clamp on one side of the backing plate of the arch steel beam. The two transverse adjusting plates are respectively located on both sides of the arch steel beam. After loosening the fastening nut, the transverse adjusting plate can move left and right, and the fixing plate and the transverse adjusting plate can move up and down along the arch steel beam, supporting height adjustment to adapt to different driving positions; an angle adjusting side plate is vertically fixed at the outer end of the transverse adjusting plate, and an arc-shaped hole is provided on the angle adjusting side plate; a drill pipe guide tube is connected to each of the two transverse adjusting plates through a hinge plate. The upper end of the hinge plate is fixedly connected to the middle position of the outer pipe wall of the drill pipe guide tube, and the lower end of the hinge plate is hinged to the top end of the transverse adjusting plate, realizing the swing of the drill pipe guide tube within an angle range of 0-60 degrees. The left and right movement of the transverse adjusting plate realizes the distance adjustment between the drill pipe guide tube and the arch steel beam. An adjusting ear plate is fixedly provided at the rear end of the drill pipe guide tube, and an adjusting bolt mounting hole is provided on the adjusting ear plate. The adjusting ear plate and the angle adjusting side plate are locked and connected through an adjusting bolt. The arc-shaped hole is arranged along the swing track of the adjusting bolt mounting hole. The adjusting bolt passes through the arc-shaped hole and the adjusting bolt mounting hole and is locked through an adjusting lock nut. An adjusting lock nut for locking the adjusting ear plate and the angle adjusting side plate is threadedly connected to the adjusting bolt. The two adjusting lock nuts are respectively threadedly connected to the adjusting bolts on the sides of the angle adjusting side plate and the adjusting ear plate away from each other. The two adjusting lock nuts are installed in a fixed manner or both are installed in a movable manner. In order to facilitate the operation, corresponding rotating handles are provided on both the adjusting bolt lock and the fastening bolt.

[0010] Further preferably: Angle marks are provided on the arc-shaped hole of the angle adjusting side plate to facilitate construction workers to quickly and accurately adjust the installation angle of the drill pipe guide tube.

[0011] Further preferably: Anti-slip textures are provided in the arc-shaped hole to enhance the friction between the adjusting bolt and the arc-shaped hole and ensure the stability of angle adjustment.

[0012] Further preferably: A support backing plate for supporting the transverse adjusting plate extends from the bottom of the fixing plate.

[0013] The multi-angle directional control device of the tunnel locking anchor rod has an ingenious structure. It adopts a lateral adjustment plate and a fixed plate to be clamped and fixed on the arch frame I-beam by fastening bolts. It supports height adjustment. The lateral adjustment plate can be adjusted to move left and right to achieve the height and width position adjustment of the drill rod guide tube to adapt to different driving positions, which significantly improves the efficiency and accuracy of anchor rod installation and provides a convenient and efficient multi-angle directional control solution for tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the multi-angle directional control device for locking foot anchors in this tunnel;

[0015] Figure 2 This is the fixed connection relationship diagram between the multi-angle directional control device of the locking foot anchor rod and the I-beam in this tunnel;

[0016] Figure 3 This is a front view schematic diagram of the multi-angle directional control device for locking foot anchors in this tunnel;

[0017] Figure 4 for Figure 3 A rear view schematic diagram of

[0018] The names corresponding to the numbers in the figure are:

[0019] 1. Arc hole; 2. Angle adjustment side plate; 3. Adjustment bolt; 4. Adjustment ear plate; 5. Drill rod guide tube; 6. Connecting plate; 7. Horizontal adjustment plate; 8. Fastening bolt; 9. Support pad; 10. Fixing plate; 11. Adjustment long hole; 12. Arch frame I-beam; 13. Fastening nut. DETAILED DESCRIPTION

[0020] In order to make the technical solution and advantages of the present application more clear, the technical solution is clearly and completely described below in conjunction with embodiments. Example

[0021] like Figures 1-4As shown in the figure, a multi-angle directional control device for tunnel locking foot bolts includes a drill pipe guiding tube 5 for guiding the drill pipe to drill holes and a fixing plate 10. At both ends of the fixing plate 10, there is a fastening bolt mounting hole respectively. At the rear ends of both sides of the fixing plate 10, a transverse adjusting plate 7 is connected respectively through fastening bolts 8. Along the length direction of the transverse adjusting plate 7, there is an adjusting long hole 11. After the fastening bolt 8 passes through the fastening bolt mounting hole and the long hole of the adjusting long hole 11 in sequence, it is locked and connected through a fastening nut 13. A nut is welded on the side of the fastening bolt mounting hole away from the transverse adjusting plate 7 or a nut is installed on the fastening bolt 8 on the side of the fastening bolt mounting hole away from the transverse adjusting plate 7. The fastening bolt mounting hole can also be set as a threaded hole for clamping and connecting the fixing plate 10 and the transverse adjusting plate 7 together with the fastening nut 13, so as to clamp on the side back plate of the arch steel I-beam 12. The two transverse adjusting plates 7 are respectively located on both sides of the arch steel I-beam 12. After loosening the fastening nut 13, the transverse adjusting plate 7 can move left and right, and the fixing plate 10 and the transverse adjusting plate 7 can move up and down along the arch steel I-beam 12, supporting height adjustment to adapt to different driving positions; at the outer end of the transverse adjusting plate 7, an angle adjusting side plate 2 is vertically fixed. On the angle adjusting side plate 2, there is an arc-shaped hole 1; on the two transverse adjusting plates 7, a drill pipe guiding tube 5 is connected respectively through a hinge plate 6. The upper end of the hinge plate 6 is fixedly connected to the middle position of the outer pipe wall of the drill pipe guiding tube 5, and the lower end of the hinge plate 6 is hinged to the top end of the transverse adjusting plate 7, realizing the swing of the drill pipe guiding tube 5 within an angle of 0 - 60 degrees. The left and right movement of the transverse adjusting plate 7 realizes the distance adjustment between the drill pipe guiding tube 5 and the arch steel I-beam 12. At the rear end of the drill pipe guiding tube 5, an adjusting ear plate 4 is fixedly provided. On the adjusting ear plate 4, there is an adjusting bolt mounting hole. The adjusting ear plate 4 and the angle adjusting side plate 2 are locked and connected through an adjusting bolt 3. The arc-shaped hole 1 is arranged along the swing track of the adjusting bolt mounting hole. The adjusting bolt 3 passes through the arc-shaped hole 1 and the adjusting bolt mounting hole and is locked through an adjusting locking nut. The adjusting bolt 3 is threadedly connected with an adjusting locking nut for locking the adjusting ear plate 4 and the angle adjusting side plate 2. The two adjusting locking nuts are respectively threadedly connected with the adjusting bolt 3 on the side away from the angle adjusting side plate 2 and the adjusting ear plate 4. The two adjusting locking nuts are installed in a fixed manner or both are installed in a movable manner.

[0022] As Figure 1 and 2 shown, the arc-shaped hole 1 of the angle adjusting side plate 2 is provided with an angle mark. Fix the adjusting bolt 3 at the corresponding angle mark, and the drill pipe guiding tube 5 will be at this inclined angle, so as to facilitate the construction personnel to quickly and accurately adjust the installation angle of the drill pipe guiding tube.

[0023] The arc-shaped hole 1 is provided with anti-slip textures to enhance the friction between the adjusting bolt 3 and the arc-shaped hole 1 and ensure the stability of angle adjustment.

[0024] A support backing plate 9 for supporting the lateral adjustment plate 7 is provided by protruding from the bottom of the fixed plate 10 described above.

[0025] The above description is not a limitation of the present application, nor is the present application limited to the above examples. Those of ordinary skill in the art of this technology, within the scope of the essence of the present application, any changes, modifications, additions or substitutions should fall within the protection scope of the present application.

Claims

1. A tunnel anchor bolt multi-angle directional control device, comprising a drill rod guide tube (5) for guiding a drill rod to drill a hole, characterized in that: It also includes a fixing plate (10), each of which has a fastening bolt mounting hole at both ends, and a transverse adjustment plate (7) is connected to each of the two ends of the rear side of the fixing plate (10) via fastening bolts (8). The transverse adjustment plate (7) is provided with an adjustment long hole (11) along its length direction. The fastening bolt (8) passes through the fastening bolt mounting hole and the adjustment long hole (11) in sequence and is locked and connected via a fastening nut (13), thereby being clamped on a side retreat plate of the arch frame I-beam (12). The two transverse adjustment plates (7) are respectively located on both sides of the arch frame I-beam (12); the transverse adjustment plate (7) An angle adjustment side plate (2) is vertically fixedly provided at the outer end thereof, and an arc-shaped hole (1) is provided on the angle adjustment side plate (2); two transverse adjustment plates (7) are respectively connected to a drill rod guide tube (5) via a hinge plate (6); the upper end of the hinge plate (6) is fixedly connected to the middle position of the outer tube wall of the drill rod guide tube (5); the lower end of the hinge plate (6) is hinged to the top end of the transverse adjustment plate (7); an adjustment ear plate (4) is fixedly provided at the rear end of the drill rod guide tube (5); the adjustment ear plate (4) is provided with an adjustment bolt mounting hole; the adjustment ear plate (4) and the angle adjustment side plate (2) are locked and connected via an adjustment bolt (3).

2. The multi-angle directional control device for tunnel locking anchor rod according to claim 1 is characterized in that: The arc-shaped hole (1) of the angle adjustment side plate (2) is provided with an angle mark, so that construction personnel can quickly and accurately adjust the installation angle of the drill rod guide tube.

3. The multi-angle directional control device for tunnel locking anchor rod according to claim 1 or 2, characterized in that: The arc-shaped hole (1) is provided with an anti-slip texture.

4. The multi-angle directional control device for tunnel locking anchor rod according to claim 1, characterized in that: A supporting pad (9) for supporting the transverse adjustment plate (7) is provided extending from the bottom of the fixing plate (10).

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