Anchor rod angle measuring device

Abstract

An anchor rod angle measuring device comprises a telescopic plate, a support plate and a scale plate which are sequentially connected to form a triangular structure, the plate face of the support plate is perpendicular to the plate face of the scale plate, one end of the telescopic plate is rotationally connected with the support plate, and the other end of the telescopic plate is slidably connected with the scale plate. The telescopic plate comprises a fixed section, a telescopic section and a movable section which are sequentially arranged, a limiting device used for being connected outside the anchor rod in a sleeving mode is arranged on the side, away from the telescopic section, of the movable section, and the limiting device is coaxial with the axis of the anchor rod. According to the invention, angle measurement of the driven anchor rod can be realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of angle measuring instruments, and specifically relates to an anchor bolt angle measuring device. Background Technology

[0002] During the construction of mined tunnels, in order to ensure the stability of the tunnel excavation face and the safety and stability of the initial support after excavation, it is necessary to carry out the construction of advanced small guide pipes, anchor bolts, and system anchor bolts. In the construction of guide pipes and anchor bolts, the borehole inclination is a test item for anchor bolt construction quality control, and the standard allows an error of generally 2% of the borehole length.

[0003] Traditional drilling angle measuring instruments are mainly used for measuring anchor bolt holes. However, during the supervision process, only random checks are performed. After the anchor bolts are installed, it is difficult to measure their angles again, which is not conducive to the control of the project quality throughout its entire life cycle. Utility Model Content

[0004] This invention provides an anchor bolt angle measuring device to solve the problem of difficulty in measuring the angle after anchor bolt construction.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An anchor bolt angle measuring device includes a telescopic plate, a support plate, and a scale plate. The telescopic plate, the support plate, and the scale plate are connected in sequence to form a triangular structure. The surface of the support plate is perpendicular to the surface of the scale plate. One end of the telescopic plate is rotatably connected to the support plate, and the other end is slidably connected to the scale plate.

[0007] The telescopic plate includes a fixed section, a telescopic section, and a movable section arranged in sequence. A limiting device for fitting onto the outside of the anchor rod is provided on the side of the movable section away from the telescopic section. The limiting device is coaxial with the axis of the anchor rod.

[0008] Furthermore, a measuring rod is detachably provided at the end of the limiting device away from the telescopic section, and the measuring rod is used to be inserted into the anchor hole.

[0009] Furthermore, the moving section is a sleeve plate coaxially arranged with the telescopic section, and the limiting device is fixed on the plate surface of the sleeve plate away from the scale plate.

[0010] Furthermore, it also includes a mounting base, wherein a socket hole is provided at the center of the mounting base surface, and each side of the mounting base is provided with a fixing bolt that passes through the mounting base and extends into the socket hole.

[0011] Furthermore, a level bubble level is provided on each plane of the mounting base.

[0012] Furthermore, the limiting device includes a limiting sleeve fitted over the anchor rod and a clamping bolt for abutting against the anchor rod. The limiting sleeve is connected to a fixed sleeve, and the clamping bolt is threaded into the fixed sleeve and can extend into the limiting sleeve.

[0013] Furthermore, an abutment block is slidably disposed inside the limiting sleeve. The abutment block is arc-shaped, and the end of the tightening bolt abuts against the surface of the abutment block. The arc surface of the abutment block away from the tightening bolt is used to fit with the anchor rod.

[0014] Furthermore, the scale plate includes a first scale bar and a second scale bar that are spaced apart, and the sliding end of the telescopic plate is located between the first scale bar and the second scale bar.

[0015] Furthermore, a sliding groove is provided on the opposite side of the first and second scale bars, and a sliding rod is provided on the sidewalls of both sides of the telescopic plate, with the sliding rod inserted into the sliding groove.

[0016] Furthermore, the scale markings on the first scale bar and the second scale bar are consistent, and both the first scale bar and the second scale bar are marked with conventional scale and simplified scale.

[0017] The present invention can achieve the following beneficial effects:

[0018] 1. This application uses a telescopic plate, a support plate, and a scale plate to form a right-angled triangular structure, and sets a limiting device on the telescopic section. The limiting device is sleeved on the outside of the anchor rod, causing the telescopic plate to slide until the surface of the telescopic plate is parallel to the axis of the anchor rod. At the same time, the support plate or the scale plate is in a vertical state. At this time, the angle between the telescopic plate and the support plate, or between the telescopic plate and the scale plate, is the inclination angle of the anchor rod. The measurement using the measuring device of this application is simple and convenient, and the angle measurement can still be completed even after the anchor rod construction is completed.

[0019] 2. A measuring rod is detachably installed on the limiting device, so that the measuring rod can be installed on the limiting device and inserted into the anchor hole before the anchor bolt is installed, so as to measure the inclination angle of the anchor hole. Thus, the measuring device of this application can measure the anchor hole angle before construction and the anchor bolt inclination angle after construction.

[0020] 3. Setting up a reference base: When the support plate and scale plate are difficult to adjust to a vertical position, the reference base can be used as the adjustment reference surface for the support plate and scale plate. First, the reference base is fitted onto the anchor rod, and the position of the reference base is adjusted until the reference base is in a vertical position. At this time, the support plate or scale plate is placed against the reference base to complete the measurement. The reference base enables the measuring device of this application to be applicable to the measurement of the anchor rod tilt angle under various environmental conditions. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the overall structure of an anchor bolt angle measuring device according to the present invention;

[0023] Figure 2 This is a partial structural diagram illustrating the limiting sleeve structure of this utility model;

[0024] Figure 3 This is a partial structural diagram illustrating the fit between the abutment block and the tightening bolt of this utility model;

[0025] Figure 4 This is a schematic diagram of the overall structure of the anchor bolt angle measuring device of this utility model after the measuring rod is installed;

[0026] Figure 5 This is a schematic diagram of the structure of the mounting base of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Telescopic plate; 11. Fixed section; 12. Telescopic section; 13. Moving section; 2. Support plate; 3. Scale plate; 31. First scale bar; 311. Slide groove; 32. Second scale bar; 321. Conventional scale; 322. Simplified scale; 4. Limiting device; 41. Limiting sleeve; 42. Tightening bolt; 43. Fixed sleeve; 44. Abutting block; 45. Elastic connector; 5. Measuring rod; 6. Mounting reference base; 61. Socket hole; 62. Fixing bolt; 63. Horizontal bubble meter. Detailed Implementation

[0029] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0030] like Figures 1 to 5 As shown, an anchor bolt angle measuring device includes a telescopic plate 1, a support plate 2, and a scale plate 3 connected in sequence. The telescopic plate 1, support plate 2, and scale plate 3 form a triangular structure, with the surface of support plate 2 perpendicular to the surface of scale plate 3. One end of the telescopic plate 1 is rotatably connected to support plate 2, and the other end is slidably connected to scale plate 3. The telescopic plate 1 slides along scale plate 3, adjusting the surface of telescopic plate 1 to be parallel to the anchor bolt axis. At this time, the included angle between telescopic plate 1 and scale plate 3 is the inclination angle of the anchor bolt.

[0031] Specifically, the telescopic plate 1 includes a fixed section 11, a telescopic section 12, and a movable section 13 arranged sequentially. The fixed section 11 is rotatably connected to one end of the support plate 2. The movable section 13 slides along the scale plate 3. The telescopic section 12 can be housed within the movable section 13 or the fixed section 11. A limiting device 4 is provided on the side of the movable section 13 away from the telescopic section 12. Specifically, the movable section 13 is a sleeve plate coaxially arranged with the telescopic section 12, and the surface of the sleeve plate is parallel to the surface of the telescopic section 12. The limiting device 4 specifically includes a limiting sleeve 41 for fitting onto the outside of the anchor rod. The limiting sleeve 41 is fixed to the plate surface of the sleeve plate on the side away from the scale plate 3.

[0032] The limiting device 4 also includes a fixed sleeve 43 communicating with the side wall of the limiting sleeve 41. A tightening bolt 42 is threaded into the fixed sleeve 43, and the tightening bolt 42 can extend into the limiting sleeve 41. An abutment block 44, which is arc-shaped, is also provided inside the limiting sleeve 41. An elastic connector 45, which is a spring in one embodiment, is provided between the abutment block 44 and the top wall of the limiting sleeve 41. After the tightening bolt 42 rotates and extends into the limiting sleeve 41, its end face abuts against the surface of the abutment block 44. Continuing to rotate the tightening bolt 42 pushes the abutment block 44 downwards, thereby allowing the anchor rod to be clamped between the arc-shaped inner wall of the abutment block 44 and the bottom wall of the limiting sleeve 41. The abutment block 44 allows for surface contact and multi-directional limiting between the abutment block 44 and the anchor rod, resulting in better anchor rod positioning.

[0033] When measuring the anchor rod inclination angle using the measuring device of this application, the limiting sleeve 41 is fitted onto the outside of the anchor rod, and then the tightening bolt 42 is rotated to push the abutment block 44 to move until the anchor rod is clamped between the abutment block 44 and the inner wall of the limiting sleeve 41, thus completing the installation.

[0034] Furthermore, a measuring rod 5 is detachably provided at the end of the limiting sleeve 41 away from the telescopic section 12. The measuring rod 5 is threadedly connected to the limiting sleeve 41 and can be inserted into the anchor hole. The setting of the measuring rod 5 and the limiting device 4 enables the measuring device of this application to have two working states: when measuring the inclination angle of the anchor hole before construction, the measuring rod 5 is installed on the limiting sleeve 41; when verifying the inclination of the anchor rod after construction, the measuring rod 5 is removed and the anchor rod is passed through the limiting sleeve 41 to realize the measurement of the inclination angle of the anchor rod.

[0035] In addition, the scale plate 3 includes a first scale bar 31 and a second scale bar 32 spaced apart. The space between the first scale bar 31 and the second scale bar 32 provides movement space for the sliding of the telescopic plate 1. A sliding groove 311 is provided on the opposite side of the first scale bar 31 and the second scale bar 32. Sliding rods are provided on the side walls of both sides of the telescopic plate 1, and the sliding rods are inserted into the sliding grooves 311. By setting the sliding grooves 311 and the sliding rods, the sliding trajectory of the telescopic plate 1 is restricted, and the telescopic plate 1 is also restricted from detaching from the scale plate 3.

[0036] Both the first scale bar 31 and the second scale bar 32 are equipped with markings, and the markings on the first scale bar 31 and the second scale bar 32 are consistent to prevent the scale plate 3 from becoming unreadable due to contamination. Both the first scale bar 31 and the second scale bar 32 are marked with a conventional scale 321 and a simplified scale 322. Usually, when inspecting the quality of anchor bolts, it is sufficient to check that the inclination of the anchor bolt does not exceed the specification. Therefore, the simplified scale 322 is marked at the limit point specified in the specification. If it is necessary to record the construction process and need to measure the inclination angle of the anchor bolt more accurately, the conventional scale 321 can be used for reading.

[0037] After taking a reading on the standard scale 321, since the length of the fixed segment 11 is fixed, the length of the telescopic segment 12 can be calculated using the Pythagorean theorem. Then, the angle between the telescopic segment 12 and the scale plate 3 can be calculated using inverse trigonometric functions. This angle is the inclination angle of the anchor rod. It should be noted that when measuring the inclination angle of the anchor rod, the support plate 2 or the scale plate 3 must be in a vertical position.

[0038] In one embodiment, when using the measuring device of this application to measure the anchor bolt angle, the surface of the tunnel cross-section around the measuring point is cleaned and leveled with plaster before use. During leveling, the surface must be vertical. During measurement, the scale plate 3 or the support plate 2 can be tightly attached to the tunnel cross-section, thus enabling accurate measurement of the anchor bolt inclination angle. It should be noted that the measuring device of this application is not only used for measuring the inclination of anchor bolts on tunnel surfaces, but also for measuring the inclination of anchor bolts in slope support, or for measuring the inclination of anchor bolts in other scenarios.

[0039] In another embodiment, the measuring device of this application further includes a mounting base 6. A socket hole 61 is provided at the center of the mounting base 6's surface. Each side of the mounting base 6 is provided with a fixing bolt 62 that is threaded through the mounting base 6 and extends into the socket hole 61. The mounting base 6 is fitted onto the outside of the anchor rod, and by rotating the fixing bolts 62 in each direction, each fixing bolt 62 abuts against the side wall of the anchor rod, thereby achieving the fixing and installation of the mounting base 6. If the mounting base 6 is installed outside the anchor rod to be measured, it will interfere with the measurement of the anchor rod's inclination. Alternatively, a rod for placing the mounting base 6 can be driven into the tunnel cross-section.

[0040] A level bubble level 63 is installed on each plane of the mounting base 6. The position of the mounting base 6 is manually adjusted until the plane of the mounting base 6 is vertical, as observed by the level bubble level 63. At this point, the measuring device is installed by aligning one side wall of the scale plate 3 with the surface of the mounting base 6.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anchor rod angle measuring device, characterized by: The utility model relates to a telescopic anchor rod measuring device, including telescopic board (1), support board (2) and scale board (3), telescopic board (1), support board (2) and scale board (3) are connected in proper order and form triangular structure, support board (2) board face and scale board (3) board face are perpendicular, one end of telescopic board (1) is rotatably connected with support board (2), and the other end is slidably connected with scale board (3), The telescopic board (1) includes a fixed section (11), a telescopic section (12), and a moving section (13) arranged in sequence, the moving section (13) is provided with a limiting device (4) on the side away from the telescopic section (12) for sleeving to the outside of the anchor rod, and the limiting device (4) is coaxial with the anchor rod axis.

2. An angle measuring device for an anchor rod according to claim 1, characterized in that: The limiting device (4) is detachably provided with a measuring rod (5) at one end away from the telescopic section (12), and the measuring rod (5) is used for inserting into the anchor hole.

3. An angle measuring device for an anchor rod as claimed in claim 1, characterized in that: The moving section (13) is a sleeve plate coaxially arranged with the telescopic section (12), and the limiting device (4) is fixed to the surface of the sleeve plate away from the scale board (3).

4. An angle measuring device for an anchor rod as claimed in claim 1, characterized in that: It also includes a mounting reference seat (6), a sleeve hole (61) is formed in the center of the seat surface of the mounting reference seat (6), and a fixing bolt (62) is arranged on each edge of the mounting reference seat (6) and extends into the sleeve hole (61).

5. An angle measuring device for an anchor rod as claimed in claim 4, characterized in that: A horizontal bubble instrument (63) is arranged on each plane of the mounting reference seat (6).

6. An angle measuring device for an anchor rod as claimed in claim 1, characterized in that: The limiting device (4) includes a limiting sleeve (41) sleeved on the outside of the anchor rod and a clamping bolt (42) used for abutting against the anchor rod, the limiting sleeve (41) is communicated with a fixed sleeve (43), the clamping bolt (42) is threadedly connected into the fixed sleeve (43) and can extend into the limiting sleeve (41).

7. An angle measuring device for an anchor rod as claimed in claim 6, characterized in that: A abutting block (44) is slidably arranged in the limiting sleeve (41), the abutting block (44) is an arc block, the end of the clamping bolt (42) abuts against the surface of the abutting block (44), and the arc surface of the abutting block (44) away from the clamping bolt (42) is used for abutting against the anchor rod.

8. An angle measuring device for an anchor rod as claimed in claim 1, characterized in that: The scale board (3) includes a first scale bar (31) and a second scale bar (32) arranged at intervals, and the sliding end of the telescopic board (1) is located between the first scale bar (31) and the second scale bar (32).

9. An angle measuring device for an anchor rod as claimed in claim 8, characterized in that: The first scale bar (31) and the second scale bar (32) are provided with a sliding groove (311) on the opposite side, and the side walls on both sides of the telescopic board (1) are provided with a sliding rod inserted into the sliding groove (311).

10. An angle measuring device for an anchor rod as claimed in claim 8, characterized in that: The scale marks on the first scale bar (31) and the second scale bar (32) are consistent, and the first scale bar (31) and the second scale bar (32) are marked with a regular scale (321) and a simple scale (322).

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