Angle adjusting and positioning device for feet-lock bolt of tunnel steel arch

Abstract

The utility model provides a tunnel steel arch foot-lock bolt angle adjusting and positioning device which comprises a clamping plate used for clamping an arch foot of a steel arch and positioning cylinders arranged on the front side and the rear side of the clamping plate and used for positioning a foot-lock bolt, and the clamping plate is composed of two clamping plates which are oppositely and symmetrically arranged and can define a rectangle. The positioning barrel is arranged on the outer side of the clamping plate, the clamping plate is further provided with an angle adjusting assembly used for adjusting the angle of the positioning barrel, the angle adjusting assembly comprises an index plate arranged on the clamping plate and a rotating disc arranged on the index plate, the positioning barrel is fixedly connected to the rotating disc, and the rotating disc is provided with a fixing structure used for fixing the positioning barrel; the clamping plate is installed at an arch foot of a tunnel steel arch, the clamping plate is fixed by means of the steel arch, then the angle of the positioning cylinder is adjusted, the locking anchor pipe is drilled and installed through the positioning cylinder, the accuracy of the arrangement angle of the locking anchor rod is guaranteed, the construction quality of the locking anchor rod is guaranteed, and the problem that the angle of the locking anchor rod is difficult to control is solved.

Description

Technical Field

[0001] The utility model relates to the technical field related to tunnel locking foot anchor rods, in particular to an angle adjustment and positioning device for a tunnel steel arch frame locking foot anchor rod. Background Art

[0002] Tunnel locking anchor rods are important facilities for connecting the primary support and surrounding rock, fixing the steel arch frame, and limiting the deformation of the supporting structure. The construction quality of the locking anchor rods plays an important role in project safety. The locking anchor rods are driven into the surrounding rock at a certain angle to the steel arch frame, and are responsible for limiting the upward and downward loosening of the steel arch frame, supporting the surrounding rock, and limiting the displacement of the structure. Currently, during on-site construction, the installation of locking anchor rods is mostly done manually with the help of drilling rigs. This method still has great limitations. Among them, due to changes in geographical location and the uncertainty of manual work, the angle of the locking anchor rod cannot be guaranteed if it is arranged solely based on the experience of the construction workers. As a result, the actual arrangement angle of the locking anchor rod deviates greatly from the design value. The locking anchor rod cannot achieve the expected effect, affecting the effect of tunnel support. Utility Model Content

[0003] The utility model aims to provide a tunnel steel arch frame locking foot anchor rod angle adjustment and positioning device, which can improve the accuracy of the locking foot anchor rod installation angle, ensure the construction quality of the locking foot anchor rod, and solve the problem of difficult control of the locking foot anchor rod angle.

[0004] To this end, the technical solution adopted by the utility model is: a tunnel steel arch frame locking foot anchor rod angle adjustment and positioning device, including a clamping plate for clamping the steel arch frame arch foot and a positioning cylinder arranged on the front and rear sides of the clamping plate for positioning the locking foot anchor rod, the clamping plate is composed of two relatively symmetrical clamping plates that can be enclosed into a rectangle, the positioning cylinder is arranged on the outer side of the clamping plate, and the clamping plate is also provided with an angle adjustment component for adjusting the angle of the positioning cylinder, the angle adjustment component includes a dividing plate arranged on the clamping plate and a rotating plate arranged on the dividing plate, the positioning cylinder is fixedly connected to the rotating plate, and the rotating plate is provided with a fixing structure for fixing the positioning cylinder.

[0005] As a preferred embodiment of the above solution, the clamping plate is formed by bending a 5 mm thick steel plate, and the inner width of the clamping plate is 1 to 2 mm larger than the width of the arch foot of the steel arch frame.

[0006] Further preferably, two fixing nuts are welded at intervals on the upper and lower bent portions of the left and right sides of the splint, the fixing nuts on the same side are distributed in a rectangular shape, and the fixing nuts are provided with fixing parts for connecting the two splints.

[0007] Further preferably, the fixing member includes a threaded rod and two adjusting nuts arranged on the threaded rod, the two adjusting nuts respectively abut against the left and right sides of the two fixing nuts on the same horizontal line, and a handle is provided at one end of the threaded rod.

[0008] Further preferably, the fixing structure includes two threaded holes symmetrically arranged on the rotating disk and a clamping bolt arranged in the threaded holes, the threaded ends of the clamping bolts abut against the dividing disk, and the threaded holes are arranged at 90 degrees to the positioning cylinder.

[0009] Further preferably, a pointer for indicating the rotation angle of the positioning cylinder is provided on the rotating disk.

[0010] More preferably, the positioning cylinder is made of a steel pipe with a hole diameter of φ50.

[0011] The beneficial effects of the present invention are as follows: the clamping plate is installed at the arch foot of the tunnel steel arch frame, the clamping plate is fixed with the help of the steel arch frame, and then the angle of the positioning tube is adjusted, the locking foot anchor pipe is drilled through the positioning tube, and then the locking foot anchor pipe is installed, which can ensure the accuracy of the locking foot anchor rod layout angle, ensure the construction quality of the locking foot anchor rod, and effectively solve the problem of difficult angle control of the locking foot anchor rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the present utility model.

[0013] Figure 2 It is a side view of the present utility model.

[0014] Figure 3 It is a top view of the present utility model. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1-3 As shown: A tunnel steel arch frame locking foot anchor rod angle adjustment and positioning device, including a clamping plate 1 for clamping the steel arch frame arch foot and a positioning cylinder 2 arranged on the front and rear sides of the clamping plate 1 for positioning the locking foot anchor rod. The clamping plate 1 is composed of two relatively symmetrical clamping plates that can be combined to form a rectangle. The shape of the clamping plate is "[" shape. The positioning cylinder 2 is arranged on the outer side of the clamping plate. The clamping plate is also provided with an angle adjustment component for adjusting the angle of the positioning cylinder 2. The angle adjustment component includes a dividing plate 3 arranged on the clamping plate and a rotating plate 4 arranged on the dividing plate 3. The positioning cylinder 2 is fixedly connected to the rotating plate 4. The rotating plate 4 is provided with a fixing structure for fixing the positioning cylinder 2.

[0017] The clamping plate is formed by bending 5mm thick steel plate. The inner width of the clamping plate 1 is 1-2mm larger than the arch foot width of the steel arch frame. The inner width of the clamping plate 1 is larger than the arch foot of the steel arch frame, which facilitates the installation of the clamping plate 1. The 5mm thick steel plate ensures the basic strength of the clamping plate 1.

[0018] Two fixing nuts 5 are welded to the bent parts on the left and right sides of the splint at intervals. The fixing nuts 5 on the same side are distributed in a rectangular shape. The fixing nuts 5 are provided with fixing parts 6 for connecting the two splints.

[0019] The fixing member 6 includes a threaded rod 601 and two adjusting nuts 602 mounted on the threaded rod 601. The two adjusting nuts 602 respectively abut against the left and right sides of two fixing nuts 5 that are located on the same horizontal line. A handle 603 is provided at one end of the threaded rod 601. By rotating the handle 603, the threaded rod 601 is connected to the fixing nuts 5. The position of the adjusting nuts 602 is adjusted, and the adjusting nuts 602 abut against the left and right sides of the two fixing nuts 5, thereby ensuring the basic connection strength of the threaded rod 601. The threaded connection also fixes the two clamping plates, ensuring the strength of the clamping plate 1.

[0020] The fixing structure includes two threaded holes symmetrically arranged on the rotating disk 4 and abutment bolts 7 disposed within the threaded holes. The threaded ends of the abutment bolts 7 abut against the indexing disk 3, and the threaded holes are arranged at a 90-degree angle to the positioning cylinder 2. The abutment bolts 7 are installed in the threaded holes and abut against the indexing disk 3, securing the positioning cylinder 2. This ensures the stability of the positioning cylinder 2 during drilling of the locking foot anchor, ensuring the precise angle of the locking foot anchor.

[0021] The rotating disk 4 is provided with a pointer (not shown) for indicating the rotation angle of the positioning tube 2. The angle of the positioning tube 2 can be directly read by the pointer, which is convenient for adjusting the angle of the positioning tube 2 and ensuring the accurate angle of the locking foot anchor.

[0022] The positioning cylinder 2 is made of a steel pipe with a hole diameter of φ50.

[0023] The clamping plate 1 is installed at the arch foot of the tunnel steel arch frame, and the clamping plate 1 is fixed with the help of the steel arch frame. Then the angle of the positioning tube 2 is adjusted, and the locking foot anchor pipe is drilled through the positioning tube 2, and then the locking foot anchor pipe is installed. This can ensure the accuracy of the locking foot anchor rod layout angle, ensure the construction quality of the locking foot anchor rod, and effectively solve the problem of difficult angle control of the locking foot anchor rod.

[0024] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A device for adjusting and positioning the angle of a locking anchor rod for a tunnel steel arch frame, characterized in that: The invention comprises a clamping plate (1) for clamping the arch foot of a steel arch frame and a positioning cylinder (2) arranged on the front and rear sides of the clamping plate (1) for positioning a locking foot anchor rod. The clamping plate (1) is composed of two relatively symmetrical clamping plates that can be combined to form a rectangle. The positioning cylinder (2) is arranged on the outer side of the clamping plate. The clamping plate is also provided with an angle adjustment component for adjusting the angle of the positioning cylinder (2). The angle adjustment component comprises a dividing plate (3) arranged on the clamping plate and a rotating plate (4) arranged on the dividing plate (3). The positioning cylinder (2) is fixedly connected to the rotating plate (4). The rotating plate (4) is provided with a fixing structure for fixing the positioning cylinder (2).

2. The device for adjusting and positioning the angle of a tunnel steel arch locking foot anchor rod according to claim 1, characterized in that: The clamping plate is formed by bending a 5mm thick steel plate, and the inner width of the clamping plate (1) is 1 to 2mm larger than the width of the arch foot of the steel arch frame.

3. The device for adjusting and positioning the angle of a tunnel steel arch locking foot anchor rod according to claim 1, characterized in that: Two fixing nuts (5) are welded to the bent portions on the left and right sides of the clamping plate at intervals, and the fixing nuts (5) on the same side are distributed in a rectangular shape. The fixing nuts (5) are provided with fixing parts (6) for connecting the two clamping plates.

4. The device for adjusting and positioning the angle of a tunnel steel arch locking anchor rod according to claim 3, characterized in that: The fixing member (6) comprises a threaded rod (601) and two adjusting nuts (602) arranged on the threaded rod (601), the two adjusting nuts (602) respectively abutting against the left and right sides of two fixing nuts (5) located on the same horizontal line, and a handle (603) is provided at one end of the threaded rod (601).

5. The device for adjusting and positioning the angle of a locking anchor rod of a tunnel steel arch frame according to claim 1, characterized in that: The fixing structure comprises two threaded holes symmetrically arranged on the rotating disk (4) and abutting bolts (7) arranged in the threaded holes, the threaded ends of the abutting bolts (7) abut against the indexing disk (3), and the threaded holes are arranged at 90 degrees to the positioning cylinder (2).

6. The device for adjusting and positioning the angle of a locking anchor rod for a tunnel steel arch according to claim 1, characterized in that: The rotating disk (4) is provided with a pointer for indicating the rotation angle of the positioning cylinder (2).

7. The device for adjusting and positioning the angle of a tunnel steel arch locking foot anchor rod according to claim 1, characterized in that: The positioning cylinder (2) is made of a steel pipe with a hole diameter of φ50.

Images