Foot-lock bolt drilling positioner

Abstract

The utility model relates to the technical field of foot-lock bolt construction, and provides a foot-lock bolt drilling positioner which comprises connecting assemblies clamped to the two sides of an arch frame respectively, the connecting assemblies on the two sides are connected through bolts and used for holding and clamping the arch frame, the outer sides of the connecting assemblies are connected with positioning cylinders, one ends of the positioning cylinders are rotationally connected with the connecting assemblies, and the other ends of the positioning cylinders are rotationally connected with the connecting assemblies. The connecting assemblies are provided with arc-shaped grooves at the other ends of the positioning cylinders, the positioning cylinders are in threaded connection with locking bolts clamped with the arc-shaped grooves and used for fixing the rotating positions of the positioning cylinders, the positioning cylinders are clamped to the two sides of the arch frame through the connecting assemblies respectively, and the bolts are used for fastening the connecting assemblies on the two sides to clamp the arch frame so as to fix the position of the positioner. After the positioning cylinder is rotated to a set angle, the angle of the positioning cylinder is fixed through the locking bolt, the angle of the positioning cylinder can be conveniently adjusted, the positioning cylinder is stabilized at a required position, the stability and adaptability of the device are improved, the consistency of drilling is ensured, and the effect of primary support is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the construction technology field of locking foot anchor rod, specifically, relates to a locking foot anchor rod drilling positioner. BACKGROUND

[0002] After the tunnel excavation is completed, the support of the inner and outer two layers of lining needs to be carried out. The outer lining, that is, the initial support, mainly relies on the steel arch, the steel mesh and the sprayed concrete to support the tunnel surrounding rock. When installing the steel arch of the initial support, it is necessary to use the locking foot anchor rod to fix the arch foot thereof to ensure the stability of the steel arch. One end of the locking foot anchor rod is fixed on the arch foot of the steel arch, and the other end is inserted into the tunnel rock mass to a certain depth. After the steel arch is stressed, the locking foot anchor rod and the steel arch jointly bear the pressure, and at the same time, part of the stress is transmitted to the surrounding rock, so the installation of the locking foot anchor rod is the key to the construction quality control.

[0003] However, in actual construction, the operating personnel usually rely on visual observation and experience to control the drilling angle. When encountering hard surrounding rock, the drill bit is prone to jump, which causes the drilling hole to deviate from the predetermined position. In this case, the positioning of the locking foot anchor rod will be affected, and it is difficult to keep the drilling angle consistent. This angle deviation will cause the stress of the initial support steel frame to be uneven, and further cause the settlement of the initial support to be difficult to effectively control. SUMMARY

[0004] The utility model aims at providing a locking foot anchor rod drilling positioner, which solves the problem of inconvenient positioning of the locking foot anchor rod drilling in the prior art, and causes the settlement of the initial support to be difficult to effectively control.

[0005] The utility model discloses a locking foot anchor rod drilling positioner, which comprises connecting assemblies respectively clamped on both sides of the arch, and the two connecting assemblies are bolted to clamp the arch, the connecting assemblies are connected with positioning cylinders on the outside, one end of the positioning cylinder is rotationally connected with the connecting assembly, an arc-shaped groove is formed in the other end of the connecting assembly, and the positioning cylinder is screw-connected with locking bolts clamped with the arc-shaped groove to fix the rotation position of the positioning cylinder.

[0006] Further, the side wall of the positioning cylinder is provided with a connecting disc, and the arc-shaped groove of the connecting assembly is provided with a clamping groove rotationally connected with the connecting disc.

[0007] Preferably, the connecting disc comprises a limiting disc in contact with the outside of the connecting assembly, and the connecting discs are detachably connected with a cross rod.

[0008] Further, the connecting assembly comprises a clamping plate, and two clamping blocks for clamping the edges of the arch are arranged in parallel on the clamping plate.

[0009] Further, a positioning scale is arranged on the edge of the arc-shaped groove on the inside of the connecting assembly, and a positioning scale line is arranged on the outer wall of the positioning cylinder in the axial direction.

[0010] Further, the connecting assembly is provided with a positioning block between the connecting plate and the arch foot of the arch frame.

[0011] The utility model has at least the following advantages and beneficial effects: the connecting assembly is clamped on both sides of the arch frame respectively, and the arch frame is clamped by the two connecting assemblies through bolt fastening to fix the position of the positioner, the angle of the positioning cylinder is fixed through the locking bolt after the positioning cylinder is rotated to a set angle, the angle of the positioning cylinder can be adjusted conveniently and stabilized at the required position, the stability and adaptability of the device are improved, the consistency of drilling is ensured, and the effect of initial support is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The utility model provides a kind of connection schematic diagram of lock foot anchor rod drilling positioner.

[0013] Figure 2 The utility model provides a kind of structure schematic diagram of lock foot anchor rod drilling positioner.

[0014] Figure 3 The utility model provides a kind of plan view of lock foot anchor rod drilling positioner.

[0015] Figure 4 The utility model provides a kind of lock foot anchor rod drilling positioner's sectional view.

[0016] Reference signs: 1-arch frame, 2-connecting assembly, 20-arc slot, 21-clamping groove, 22-clip plate, 23-clamping block, 3-positioning cylinder, 31-connecting disc, 32-limiting disc, 4-locking bolt, 5-cross bar. DETAILED DESCRIPTION

[0017] The specific embodiments are described below in conjunction with the accompanying drawings.

[0018] EMBODIMENT

[0019] As Figures 1-4As shown, in the embodiment, a locking foot anchor rod drilling positioner is mainly disclosed, which comprises connecting assemblies 2 respectively clamped on both sides of an arch 1, the connecting assemblies 2 on both sides are bolted for clamping the arch 1, a positioning cylinder 3 is connected outside the connecting assemblies 2, one end of the positioning cylinder 3 is rotationally connected with the connecting assembly 2, an arc-shaped groove 20 is formed in the other end of the connecting assembly 2, and the positioning cylinder 3 is threadedly connected with a locking bolt 4 clamped with the arc-shaped groove 20 for fixing the rotational position of the positioning cylinder 3. Specifically, the positioning cylinder 3 is provided for the drill bit to pass through, so as to facilitate the positioning drilling of the mounting hole for connecting the locking foot anchor rod. The arc-shaped groove 20 is a circular arc swept with the rotational connection point of the positioning cylinder 3 as the center and the distance between the rotational connection point and the locking bolt 4 as the radius, so that the positioning cylinder 3 can freely rotate within a certain range. When rotated to a set position, the locking bolt 4 is screwed to abut against the side wall of the arc-shaped groove 20, so as to fix the swinging end of the positioning cylinder 3, thereby improving the flexibility and safety of construction. In operation, firstly, the positioning cylinder 3 on one side is rotated to a suitable angle, the positioning cylinder 3 is preliminarily fastened by the locking bolt 4, and the relative position of the positioning cylinder 3 is fixed, then the connecting assemblies 2 on both sides are clamped onto the arch 1 and fastened by bolts, the arch 1 is clamped, the angle of the positioning cylinder 3 is adjusted, the locking bolt 4 is screwed, and the position of the positioning cylinder 3 is further fixed. In disassembly, only the bolts connecting the connecting assemblies 2 on both sides need to be screwed. The angle of the positioning cylinder 3 can be conveniently adjusted and stabilized at the required position, the stability and adaptability of the device are improved, the consistency of drilling is ensured, and the effect of initial support is improved.

[0020] Further, in specific implementation, the side wall of the positioning cylinder 3 is provided with a connecting disc 31, and the arc-shaped groove 20 is provided with a clamping groove 21 rotationally connected with the connecting disc 31 at the center position of the arc-shaped groove 20.

[0021] Preferably, the connecting disc 31 comprises a limiting disc 32 in contact with the outside of the connecting assembly 2, and a cross rod 5 is detachably connected between the connecting discs 31. Specifically, the connecting disc 31 is rotationally connected with the circumferential position of the limiting disc 31. The cross rod 5 is a threaded rod, the two ends of which are respectively threadedly connected with the connecting discs 31 arranged on both sides. By relative rotation of the threaded rod and the connecting disc 31, the distance between the two connecting discs 31 is finely adjusted, the limiting disc 32 is in contact with the outside of the connecting assembly 2, and the stability of the connection between the connecting disc 31 and the connecting assembly 2 is ensured. At the same time, the synchronous rotation of the positioning cylinders 3 on both sides can be realized.

[0022] Further, in the specific implementation, the connecting assembly 2 provided by the embodiment of the utility model comprises a clamping plate 22, and two clamping blocks 23 for clamping the edges of the arch frame 1 are arranged in parallel on the clamping plate 22. The combination of the connecting assembly 2 and the arch frame 1 is enhanced, and the accuracy of positioning in the drilling process is ensured.

[0023] Further, in the specific implementation, the connecting assembly 2 provided by the embodiment of the utility model is provided with a positioning scale inside the edge of the arc-shaped groove 20, and the outer wall of the positioning cylinder 3 is provided with a positioning scale line in the axial direction. Visualization of the reference helps the operator to quickly judge and adjust the angle of drilling, improves the construction efficiency, and reduces the human error.

[0024] Further, in the specific implementation, the connecting assembly 2 provided by the embodiment of the utility model is provided with a positioning block between the connecting plate arranged at the arch foot of the arch frame 1. Specifically, the positioning block is a strip-shaped block, one end of which abuts against the connecting plate of the arch frame 1, and the other end of which abuts against the side edge of the connecting assembly 2, for positioning the installation position of the entire positioner on the arch frame 1. The positioner is removed after being positioned and installed.

Claims

1. A toe anchor drill hole positioner, comprising: The utility model provides a kind of arch support (1) and the connecting assembly (2) for being clamped to the two sides of arch support (1) respectively, the connecting assembly (2) of two sides is bolted for clamping arch support (1), connecting assembly (2) is connected with positioning cylinder (3) outside, one end of positioning cylinder (3) is rotatably connected with connecting assembly (2), arc slot (20) is set in connecting assembly (2) other end of positioning cylinder (3), locking bolt (4) is connected with arc slot (20) for fixing the rotating position of positioning cylinder (3) by screwing.

2. A footed anchor drill hole positioner according to claim 1, wherein, Positioning cylinder (3) side wall is equipped with connecting disc (31), the center position of arc slot (20) of connecting assembly (2) is equipped with the clamping groove (21) of limit rotary connection with connecting disc (31).

3. A footed anchor drill hole positioner according to claim 2, wherein, Connecting disc (31) includes limit disc (32) and is contacted with the outside of connecting assembly (2), and horizontal rod (5) is detachably connected between connecting disc (31).

4. A footed anchor rod drill hole positioner according to claim 1, wherein, Connecting assembly (2) includes clamping plate (22), and two clamping blocks (23) for being clamped to the edge of arch support (1) are arranged in parallel on clamping plate (22).

5. A footed anchor rod drill hole positioner according to claim 1, wherein, The inside of connecting assembly (2) is provided with a positioning scale at the edge of arc slot (20), and the outer wall of positioning cylinder (3) is provided with a positioning scale along the axial direction.

6. A footed anchor rod drill hole positioner according to claim 1, wherein, The connecting assembly (2) is provided with a positioning block between the connecting plate arranged at the arch foot of the arch support (1).

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