A directional device for drilling holes for locking anchor bolts of tunnel arch frames

Abstract

The present invention provides an orientation device for drilling a locking foot anchor of a tunnel arch frame, comprising two orientation structures, the two orientation structures are used to be relatively arranged on both sides of the foot of the arch frame, the two orientation structures can be detachably connected to the arch frame, the orientation structure comprises a base, the base is provided with a first orientation plate and a second orientation plate, the first orientation plate is provided with a first positioning hole, the second orientation plate is provided with a second positioning hole, the first positioning hole and the second positioning hole of the same orientation structure are used to pass a 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, and then control the direction of the locking foot anchor, avoid angle deviation in the construction of the locking foot anchor, ensure the construction quality of the locking foot anchor, and then ensure the supporting capacity of the locking foot anchor, and avoid danger in tunnel construction. At the same time, it can be detachably connected to the arch frame, can be reused, and is convenient for construction.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel arch frame locking foot anchor rod construction, in particular to a tunnel arch frame locking foot anchor rod drilling directional device. Background Art

[0002] In the process of tunnel excavation and support in highways, railways, underground water diversion tunnels, etc., high requirements are often placed on the safety, construction quality, and appearance of the construction process. In tunnel excavation in an environment with poor surrounding rock quality, tunnel anchor technology is needed to support the excavated tunnel. The locking foot anchor technology is widely used in tunnel construction. The locking foot in the tunnel refers to the process of fixing the foot of the arch frame through the locking foot anchor after the tunnel is excavated on the upper step and the arch frame support is erected. When fixing, it is necessary to fix symmetrically on both sides of the foot of the arch frame. The main function of the locking foot anchor is to limit the rigid displacement of the arch frame support as much as possible, stabilize the arch foot, and play an advanced support role for the lower excavation, so that it can bear the pressure caused by the deformation of the surrounding rock as soon as possible, and ensure the initial stability of the tunnel. The length and driving angle of the locking foot anchor have a great influence on the supporting capacity of the support structure. Reasonable length and angle are not only conducive to limiting the deformation of the surrounding rock, but also conducive to exerting the bearing capacity of the support structure. During the actual construction process, it is necessary to first drill a hole with a drill rod and then install the locking anchor into the hole. Due to the influence of environmental factors on site construction and the construction workers' own experience, the drilling angle is difficult to control, which in turn makes it difficult to control the driving angle of the locking anchor. The angle deviation greatly weakens the effect of the locking anchor. In severe cases, it can lead to the failure of the initial support function of the tunnel, which can easily cause major quality and safety accidents. Summary of the invention

[0003] The purpose of the present invention is to provide a directional device for drilling holes for locking foot anchor rods of tunnel arch frames in view of the problem in the prior art that the driving angle of the locking foot anchor rod is difficult to control, and the angle deviation greatly weakens the effect of the locking foot anchor rod, which may lead to failure of the initial support function of the tunnel in severe cases and easily cause major quality and safety accidents.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A tunnel arch frame locking foot anchor drilling orienting device comprises two orienting structures, wherein the two orienting structures are used to be arranged on both sides of the foot of the arch frame relatively, and the two orienting structures can be detachably connected to the arch frame, and the orienting structure comprises a base, and the base is provided with a first orienting plate and a second orienting plate, the first orienting plate is provided with a first positioning hole, and the second orienting plate is provided with a second positioning hole, and the first positioning hole and the second positioning hole of the same orienting structure are used to pass a drill rod and adjust the angle of the drill rod.

[0006] The first positioning hole and the second positioning hole of each directional structure are respectively arranged on the first directional plate and the second directional plate, and the first directional plate and the second directional plate are connected by a base. The first positioning hole and the second positioning hole form a passage for the drill rod to pass through, so that a height difference is formed at both ends of the drill rod, which is used to control the drilling direction of the drill rod, such as: by setting the position of the first positioning hole to be lower than the position of the second positioning hole, the drill rod passes through the second positioning hole and the first positioning hole, and by adjusting the relative position of the first positioning hole and the second positioning hole, or by adjusting the relative position of the drill rod in the first positioning hole and the second positioning hole, the direction of the drill rod can be adjusted and controlled. Since the direction of the locking foot anchor rod is mainly determined by the direction of drilling, the direction of the locking foot anchor rod can be effectively guaranteed by adjusting the direction of the drill rod, so that the construction of the locking foot anchor rod is more accurate. Each directional structure can independently control the direction of the locking foot anchor rod on one side of the foot of the arch frame. The two directional structures are used to be relatively arranged on both sides of the foot of the arch frame, so that the directional device for drilling holes for the locking foot anchor rods of the tunnel arch frame can simultaneously orient and construct the locking foot anchor rods on both sides of the foot of the arch frame, and the two directional structures are detachably connected to the arch frame, and the two directional structures can be removed at any time for the construction of the locking foot anchor rods of another arch frame. They can be reused, are easy to construct, and have low cost and high economic benefits.

[0007] The tunnel arch locking foot anchor bolt drilling orientation device of the present invention can adjust and control the drilling direction of the drill rod through the first positioning hole and the second positioning hole, and then control the direction of the locking foot anchor bolt through the completed drilling, so as to avoid angle deviation in the construction of the locking foot anchor bolt, ensure the construction quality of the locking foot anchor bolt, and further ensure the supporting capacity of the locking foot anchor bolt, and avoid tunnel construction danger. And the tunnel arch locking foot anchor bolt drilling orientation device can be used for the construction of the locking foot anchor pipe.

[0008] Preferably, the second oriented plate is vertically arranged on the base, the second positioning hole is a vertically arranged strip hole, and a support member is provided at the second positioning hole on the second oriented plate, the support member is used to support the drill rod, and the support member can be moved and fixed along the length direction of the second positioning hole.

[0009] By setting a vertical strip hole as the second positioning hole, the strip hole has a certain length, so that the drill rod can pass through the second positioning hole at different heights, and then the drill rod is supported by a support member that can be adjusted in the length direction of the strip hole, so that the angle of the drill rod is maintained. By adjusting the different positions of the support member in the length direction of the strip hole, the angle of the drill rod can be freely controlled, and then the driving angle of the locking foot anchor rod can be reasonably adjusted according to the construction situation, and by designing the size of the strip hole, the relative position of the strip hole and the first positioning hole, and then the support member can adjust the angle between the drill rod and the horizontal plane to any acute angle, the adjustment range is wide, the adjustment effect is good, and after adjusting to any acute angle, the angle of the drill rod can be stably controlled, thereby ensuring the construction quality of the locking foot anchor rod.

[0010] Preferably, the support member comprises two clamping plates, the two clamping plates are transversely clamped on the second directional plate, and the two clamping plates are fixedly connected by a first bolt.

[0011] The two clamping plates are connected by the first bolt to realize the two functions of supporting the drill rod and adjusting the supporting position of the support member. At the same time, the support member structure is easy to process and has low cost. The support member can also adopt a structure such as a support plate that is slidably connected to the second directional plate, and a corresponding locking structure such as a buckle is provided on the support plate so that the support plate can be fixed on the second directional plate. The support member can also adopt other structures, as long as it can adjust the vertical height of the drill rod in the second positioning hole and can fix and support the drill rod.

[0012] Preferably, the second directional plate is provided with scales along the length direction of the second positioning hole.

[0013] The scale is set to mark the angle of the drill rod when the support member is at different scales and the drill rod passes through the first positioning hole and the second positioning hole. This is convenient for construction personnel to directly adjust the support member according to the mark during construction, and then adjust the drill rod to the corresponding angle without repeated measurements on site, which can improve the construction accuracy and efficiency of the locking foot anchor rod.

[0014] Preferably, the first oriented plate is provided with a first locking clip, the second oriented plate is provided with a second locking clip, the first locking clips of the two oriented structures are connected by a second bolt, and the second locking clips of the two oriented structures are connected by a second bolt.

[0015] By providing the first locking clip and the second locking clip, it is convenient to detachably connect the two directional structures, and at the same time, it is convenient to clamp the two directional structures on both sides of the foot of the arch frame, so as to facilitate the simultaneous construction of the locking foot anchor rods on both sides of the foot of the arch frame. At the same time, the two directional structures are connected by the second bolt, and the second bolt is a long bolt. It is only necessary to pass the second bolt through the connection hole of the first locking clip or the second locking clip to quickly realize the alignment of the two directional structures, so as to ensure the symmetrical construction of the locking foot anchor rods on both sides of the foot of the arch frame.

[0016] Preferably, the first directional plate and the second directional plate are arranged in parallel, the first directional plate is provided with a first locking clip at each of the upper and lower ends, and the second directional plate is provided with a second locking clip at each of the upper and lower ends. Through the above arrangement, the two directional structures can be stably fixed on the arch frame.

[0017] Preferably, the arch frame is an I-beam structure, and two positioning grooves are provided on the base. The two positioning grooves of the same base are respectively used to adapt and position two flange plates of the arch frame.

[0018] When the arch frame is an I-beam structure, the directional structure can be quickly installed on the arch frame by setting positioning grooves that are compatible with the two flange plates of the I-beam structure. At the same time, the positioning grooves can limit the moving direction of the directional structure, making it easier for the directional structure to move and adjust along the arch frame.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] The tunnel arch locking anchor bolt drilling directional device of the present invention 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 anchor bolt, avoiding angle deviation in the construction of the locking anchor bolt, ensuring the construction quality of the locking anchor bolt, thereby ensuring the supporting capacity of the locking anchor bolt, and avoiding tunnel construction danger. At the same time, it can be detachably connected to the arch frame, can be reused, and is convenient for construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the directional device for drilling holes for the locking foot anchor of the tunnel arch frame described in Example 1;

[0022] Figure 2 is a schematic structural diagram of the directional structure in Example 1;

[0023] Figure 3 is a schematic structural diagram of the support member in Example 1;

[0024] Figure 4 1. It is a schematic diagram of the use state of the directional device for drilling holes of the tunnel arch locking foot anchor described in Example 1;

[0025] Icon: 1-arch; 2-base; 21-positioning groove; 3-first directional plate; 31-first positioning hole; 4-second directional plate; 41-second positioning hole; 51-first locking clip; 511-second bolt; 52-second locking clip; 6-support; 61-first bolt; 7-positioning ruler; 8-drill rod. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Example 1

[0029] This embodiment provides a tunnel arch locking foot anchor drilling directional device, see Figure 1-4 , including two directional structures, the two directional structures are used to be relatively arranged on both sides of the foot of the arch frame 1, and the two directional structures can be detachably connected to the arch frame 1. The directional structure includes a base 2, and the base 2 is provided with a first directional plate 3 and a second directional plate 4. The first directional plate 3 is provided with a first positioning hole 31, and the second directional plate 4 is provided with a second positioning hole 41. The first positioning hole 31 and the second positioning hole 41 of the same directional structure are used to penetrate the drill rod 8 and adjust the angle of the drill rod 8.

[0030] In this embodiment, Figure 4 As shown, the arch frame 1 is an I-beam structure. Figure 2 As shown, it includes a base 2, which is a steel plate with two positioning grooves 21 on the right side. The two positioning grooves 21 are respectively used to adapt and position the two flange plates of the arch frame 1, and the part between the two positioning grooves 21 can just abut against the web of the arch frame 1 to form a support. A vertically arranged first directional plate 3 and a vertically arranged second directional plate 4 are arranged above the base 2. The first directional plate 3 and the second directional plate 4 are arranged in parallel with a certain distance apart. A circular or elliptical first positioning hole 31 is arranged at the bottom of the first directional plate 3, and it can also be other shapes. A first locking clip 51 is respectively arranged at the lower end and the upper end of the first directional plate 3, and the first locking clip 51 has a connecting hole.

[0031] A second positioning hole 41 is provided in the middle of the second orienting plate 4. The second positioning hole 41 is a vertically arranged strip hole, and may also be in other shapes, such as an ellipse, and a second locking clip 52 is provided at each of the upper and lower ends of the second orienting plate 4. The two second locking clips 52 are respectively located outside the upper and lower ends of the strip hole. A support member 6 is provided at the second positioning hole 41 on the second orienting plate 4. The support member 6 is used to support the drill rod 8. The support member 6 can be moved and fixed along the length direction of the second positioning hole 41. Specifically, the support member 6 includes two clamping plates, such as Figure 2 As shown, the two clamps are transversely clamped on both sides of the second directional plate 4, so that the clamps are transversely arranged outside the strip hole, which can support the drill rod 8, and the two clamps are fixedly connected by the first bolt 61. A positioning ruler 7 is provided on the second directional plate 4 along the length direction of the second positioning hole 41, and a scale is provided on the positioning ruler 7. The scale is set to mark the angle of the drill rod 8 when the drill rod 8 passes through the first positioning hole 31 and the second positioning hole 41 when the support member 6 is at different scales, so that the construction personnel can directly adjust the support member 6 according to the mark during construction, and then adjust the drill rod 8 to the corresponding angle, without repeated measurements on site, which can improve the construction accuracy and efficiency of the locking foot anchor rod.

[0032] like Figure 1 or Figure 4 As shown, the two directional structures are detachably connected by four second bolts 511, and the second bolts 511 are long bolts, such as M14*250mm. Specifically, the first locking clip 51 of one of the directional structures is connected to the first locking clip 51 of the other directional structure by the second bolts 511, and the second locking clip 52 of one of the directional structures is connected to the second locking clip 52 of the other directional structure by the second bolts 511.

[0033] The directional device for drilling holes for the locking foot anchor rod of the tunnel arch frame described in this embodiment is installed at the specified position of the arch frame 1 during construction, and then the support member 6 is adjusted to the specified position of the positioning ruler 7, and then the drill rod 8 is passed through the second positioning hole 41 from above the support member 6 and then through the first positioning hole 31, and then drilling can be carried out. It can adjust and control the drilling direction of the drill rod 8 through the first positioning hole 31 and the second positioning hole 41. After drilling, the drill rod 8 is removed, and the locking foot anchor rod is driven in according to the drilling path of the drill rod 8, thereby limiting the direction of the locking foot anchor rod, avoiding angle deviation in the construction of the locking foot anchor rod, ensuring the construction quality of the locking foot anchor rod, and then ensuring the supporting capacity of the locking foot anchor rod, avoiding danger in tunnel construction. At the same time, it can be detachably connected to the arch frame 1, can be reused, and is convenient for construction.

[0034] In this embodiment, the first oriented plate 3, the second oriented plate 4, the base 2, the first locking clip 51 and the second locking clip 52 are all steel plates, and the oriented structure is formed by welding, which is convenient for material acquisition and processing, and the size of each structural component is determined according to the actual construction situation.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tunnel arch anchor bolt drilling directional device, characterized in that: The invention comprises two orientation structures, the two orientation structures are used to be arranged on both sides of the foot of the arch frame (1) relatively to each other, the two orientation structures can be detachably connected to the arch frame (1), the orientation structure comprises a base (2), the base (2) is provided with a first orientation plate (3) and a second orientation plate (4), the first orientation plate (3) is provided with a first positioning hole (31), the second orientation plate (4) is provided with a second positioning hole (41), the first positioning hole (31) and the second positioning hole (41) of the same orientation structure are used to pass a drill rod (8) and adjust the angle of the drill rod (8); the second orientation plate (4 ) is vertically arranged on the base (2), the second positioning hole (41) is a vertically arranged strip hole, a support member (6) is provided at the second positioning hole (41) on the second oriented plate (4), the support member (6) is used to support the drill rod (8), and the support member (6) can be moved and fixed along the length direction of the second positioning hole (41); the support member (6) includes two clamping plates, the two clamping plates are horizontally clamped on the second oriented plate (4), and the two clamping plates are fixedly connected by a first bolt (61); the second oriented plate (4) is provided with a scale along the length direction of the second positioning hole (41).

2. The tunnel arch locking anchor bolt drilling directional device according to claim 1, characterized in that: The first oriented plate (3) is provided with a first locking clip (51), the second oriented plate (4) is provided with a second locking clip (52), the first locking clips (51) of the two oriented structures are connected by a second bolt (511), and the second locking clips (52) of the two oriented structures are connected by a second bolt (511).

3. The directional device for drilling holes of tunnel arch locking anchor bolts according to claim 2, characterized in that: The first oriented plate (3) and the second oriented plate (4) are arranged in parallel, the first oriented plate (3) is provided with a first locking clip (51) at each of its upper and lower ends, and the second oriented plate (4) is provided with a second locking clip (52) at each of its upper and lower ends.

4. The tunnel arch locking anchor bolt drilling orientation device according to claim 1, characterized in that: The arch frame (1) is an I-beam structure, and the base (2) is provided with two positioning grooves (21). The two positioning grooves (21) of the same base (2) are respectively used to adapt and position two flange plates of the arch frame (1).

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