Tool for measuring drilling angle of tunnel anchor rod
By using a horizontal ruler, protractor and measuring rod in the measurement tool, combined with level bubbles, magnets and adjusters, the fixing instability and human operation interference in the measurement angle measurement of tunnel anchor bores is solved, achieving higher measurement accuracy and a wider scope of application.
Patent Information
- Application Number
- CN202420051283.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-09
AI Technical Summary
The prior art has problems such as fixed instability and large human operation interference when measuring the angle of the tunnel anchor bore, resulting in large measurement errors and is only suitable for slope angle measurement, which has limitations.
A tool including a leveling ruler, protractor and measuring rod is designed. Leveling bubbles and magnets are provided on the leveling ruler, arcuate grooves and adjusting parts are provided on the protractor. The measuring rod can be rotatably connected to the protractor, and the position of the measuring rod is fixed through the adjusting parts. , reduce errors and connect them to the drilling machine through magnets to achieve angle measurements at different positions.
It improves the accuracy and stability of the measurement results, makes the tool suitable for anchor bore drilling angle measurement in various occasions, reduces human operation interference, and expands the scope of use.
Smart Images
Figure CN222228530U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring tools, in particular to a tool for measuring the drilling angle of a tunnel anchor rod. Background Art
[0002] In tunnel engineering, anchor rods play a vital role in the stability and safety of tunnel construction. Anchor rods are needed to reinforce and stabilize the surrounding rock during the initial support, temporary support, and mid-rock wall reinforcement. During the anchor rod construction process, the anchor rods are usually tilted to a preset angle according to the construction requirements and then placed in the rock layer to improve or enhance the support performance of the soil and rock. In order to make the drilling angle of the anchor rod meet the design and construction requirements, the drilling angle of the anchor rod needs to be measured.
[0003] For the measurement of borehole inclination angle, the prior art usually adopts the straight face of the slope gauge to be placed on the bottom of the drilling rig runway or on the drill rod, so that the lead line droops naturally, and the overlap of the slope gauge and the lead line is the borehole inclination angle; this measurement method has the problem of unstable fixation of the slope gauge, and the lead line will interfere with the angle measurement and drilling construction, and is greatly affected by human operation interference. The Chinese utility model patent with the announcement number CN 217541919 U discloses "an anchor rod type retaining wall anchor hole drilling angle measurement instrument", which discloses that one end of the level ruler is placed on the slope surface, and one end of the angle measuring rod is inserted into the anchor hole to complete the measurement of the borehole angle; however, the use of this instrument is also greatly affected by human operation interference. During the angle measurement process, the instrument cannot leave the anchor hole position, and is easily affected by the operation of the surveyor and produces reading errors; moreover, this instrument is only suitable for measuring the borehole angle on the slope, and the measurement has limitations. Utility Model Content
[0004] At least one of the purposes of the present utility model is to provide a tool for measuring the drilling angle of tunnel anchor bolts, aiming at overcoming the problems existing in the above-mentioned prior art, which can reduce measurement errors and improve the accuracy of measurement results. The tool is also suitable for measuring the drilling angle of anchor bolts in various occasions, and can expand the scope of use of the tool.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model includes the following aspects.
[0006] A tool for measuring the drilling angle of a tunnel anchor bolt comprises: a level, a protractor and a measuring rod, wherein the level is provided with a level bubble, the protractor is arranged on the level, and the measuring rod is rotatably connected to the center of the protractor; an arc groove is circumferentially provided on the protractor, the first end of the measuring rod passes through the arc groove and extends to the scale of the protractor, and an adjusting piece for adjusting the tightness of the measuring rod is arranged at the arc groove.
[0007] Preferably, one or more mounting holes are provided in the length direction of the level.
[0008] Preferably, a blocking member for limiting the position of the protractor is provided on the level ruler, and the blocking member is arranged at the mounting hole.
[0009] Preferably, the blocking member is a rectangular block, the rectangular block is arranged below the mounting hole, the protractor is a semicircular structure, and the bottom of the protractor contacts the top of the rectangular block.
[0010] Preferably, the blocking member is a U-shaped block, an L-shaped block is arranged on the back of the protractor, the width of the L-shaped block is matched with the width of the U-shaped block, and the L-shaped block is engaged with the U-shaped block.
[0011] Preferably, a magnet for fixing the level is provided on the level, the magnet is a cylindrical structure, and the diameter of the magnet is matched with the diameter of the mounting hole.
[0012] Preferably, the first end of the measuring rod is sharp.
[0013] Preferably, the vial includes a horizontal vial and a vertical vial, the horizontal vial is arranged on the top of the spirit level, and the two vertical vials are respectively vertically adjacent to the left and right ends of the spirit level, and the axis of the horizontal vial is perpendicular to the axis of the vertical vial.
[0014] Preferably, a positioning piece is provided on the measuring rod, the cross section of the positioning piece is a T-shaped structure, the positioning piece includes a supporting portion, a connecting platform is provided in the middle of the supporting portion, the connecting platform is a hollow structure, and the connecting platform can be detachably mounted on the measuring rod.
[0015] Preferably, the protractor is made of iron material or plastic, the measuring rod is made of iron material or plastic, and the level ruler is made of iron material or plastic.
[0016] In summary, due to the adoption of the above technical solution, the utility model has at least the following beneficial effects:
[0017] By setting a horizontal bubble and a vertical bubble on the level, the horizontal state and vertical state of the level can be observed respectively, thereby improving the accuracy of the tool in measuring the anchor drilling angle at different positions. By setting an arc groove circumferentially on the protractor, setting an adjustment piece at the arc groove, and connecting the measuring rod and the protractor through the adjustment piece, the adjustment piece can fix the measuring rod at a preset position, thereby making the tool separated from the measurement site reading, thereby improving the accuracy of the measurement result. By setting a magnet on the level, the level can be installed on the drilling machine for measurement. After the level is installed on the drilling machine, the level can rotate around the magnet axis so that the level is parallel to the bottom of the runway or the drill rod of the drilling machine, thereby making the tool suitable for anchor drilling angle measurement at different positions. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic structural diagram of a tool for measuring the drilling angle of a tunnel anchor bolt according to an exemplary embodiment of the utility model.
[0019] Figure 2 It is a schematic structural diagram of a tool for measuring the drilling angle of a tunnel anchor according to another exemplary embodiment of the utility model.
[0020] Figure 3 It is an enlarged schematic diagram of the connection position between the level ruler and the protractor of the exemplary embodiment of the utility model.
[0021] Figure 4 This is a schematic diagram of a first usage state of a tool for measuring a tunnel anchor drilling angle according to an exemplary embodiment of the utility model.
[0022] Figure 5 This is a schematic diagram of a second usage state of a tool for measuring a tunnel anchor drilling angle according to an exemplary embodiment of the utility model.
[0023] Markings in the figure: 1-level ruler, 11-mounting hole, 2-protractor, 21-arc groove, 3-measuring rod, 4-level bubble, 5-adjusting part, 6-blocking part, 7-magnet, 8-drilling machine, 9-positioning part. DETAILED DESCRIPTION
[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments to make the purpose, technical solutions and advantages of the present invention more clearly understood. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0025] refer to Figure 1The tool for measuring the drilling angle of a tunnel anchor bolt of an exemplary embodiment of the utility model comprises a level 1, a protractor 2 and a measuring rod 3. A level bubble 4 is arranged on the level 1, the protractor 2 is arranged on the level 1, and the measuring rod 3 is rotatably connected at the center of the protractor 2; an arc groove 21 is circumferentially arranged on the protractor 2, and the first end of the measuring rod 3 passes through the arc groove 21 and extends to the scale of the protractor 2, and an adjusting member 5 for adjusting the tightness of the measuring rod 3 is arranged at the arc groove 21.
[0026] The adjusting member 5 can adjust the tightness of the connection between the measuring rod 3 and the protractor 2. When the adjusting member 5 fixes the measuring rod 3 and the protractor 2, the measuring rod 3 can be fixed at a preset position. After the tool leaves the anchor hole position, the position of the measuring rod 3 remains unchanged, thereby reducing the measurement error and improving the accuracy of the measurement result. When the adjusting member 5 movably connects the measuring rod 3 and the protractor 2, the measuring rod 3 can rotate relative to the protractor 2 to measure the anchor drilling angle. The adjusting member 5 can be a bolt assembly or any other assembly that connects the measuring rod 3 and the protractor 2.
[0027] The first end of the measuring rod 3 is sharp, and the sharp shape can make the first end of the measuring rod 3 fully point to the preset scale line, thereby reducing the reading error.
[0028] The level bubble 4 includes a horizontal level bubble and a vertical level bubble, and the horizontal level bubble is arranged on the top of the level ruler 1 ( Figure 1 The horizontal and vertical vials can be used to observe the horizontal and vertical states of the level ruler 1, and when the tool is used to measure the angle of the anchor bolt drilling at the top of the tunnel, the accuracy of the measurement results can be improved.
[0029] The protractor 2 is a semicircular structure, and two rows of scale values are arranged circumferentially on the protractor 2. The range of each row of scale values is 0 to 180 degrees, and the two rows of scale values are arranged in opposite directions (0 degrees of the first row of scale values corresponds to 180 degrees of the second row of scale values). Setting two rows of scale values can facilitate reading and improve the accuracy of the reading results. The protractor 2 can also be a circular structure (refer to Figure 2 ), when it is a circular structure, the range of each row of scale values is 0 to 360 degrees. The protractor 2 is made of iron material or plastic, and during use, the protractor 2 is prevented from deforming itself; the measuring rod 3 is made of iron material or plastic, and the level 1 is made of iron material or plastic.
[0030] One or more mounting holes 11 are provided in the length direction of the level 1, and the protractor 2 is detachably provided at the mounting hole 11 on the level 1; when multiple mounting holes are provided, the mounting position of the protractor 2 on the level 1 can be adjusted, and when the tool measures the anchor drilling angle on slopes of different slopes, the mounting position of the protractor 2 in the length direction of the level 1 can be adjusted so that the end of the level 1 can be placed against the slope, thereby improving the accuracy of the measurement result. In addition to the mounting holes at both ends of the level 1, after the protractor 2 is installed at other mounting hole positions, during use, after one end of the level 1 is placed against the tunnel wall or slope, the other end can be used as a handle, thereby improving the convenience of anchor drilling angle measurement.
[0031] The level ruler 1 is also provided with a stopper 6, which is provided at the mounting hole 11. The stopper 6 is used to limit the position of the protractor 2 to prevent the position of the protractor 2 from changing and affecting the measurement result. The stopper 6 can be a rectangular block, which is provided below the mounting hole 11 ( Figure 1 The bottom of the protractor 2 contacts the top of the rectangular block, and the rectangular block can prevent the protractor 2 from rotating; the rectangular block is suitable for a protractor with a semicircular structure. The blocking member 6 can also be a U-shaped block. Accordingly, an L-shaped block is provided on the back of the protractor 2. The width of the L-shaped block matches the width of the U-shaped block, and the L-shaped block is engaged with the U-shaped block (refer to Figure 3 ), which can prevent the protractor 2 from rotating; the U-shaped block is suitable for protractors with semicircular or circular structures.
[0032] The level 1 is also provided with a magnet 7 for fixing the level. The magnet 7 enables the level 1 to be mounted on the bottom of the runway of the drilling machine or on the drill rod, so that the drilling machine can drill holes according to a preset angle. The magnet 7 is a cylindrical structure, and its diameter is adapted to the diameter of the mounting hole 11; in the process of connecting the level with the drilling machine, the end surface of the magnet connected to the drilling machine can be adapted to the surface shape at the connection position to improve the stability of the connection between the level and the drilling machine; the magnet 7 can pass through the level 1 from the mounting hole 11, and the level 1 can rotate around the magnet, thereby adjusting the position of the level 1 to achieve the measurement of the anchor drilling angle; under the action of the magnetic force of the magnet, the level 1 can be kept at the adjusted position. The measuring rod 3 is also provided with a horizontal level bubble and a vertical level bubble. The horizontal level bubble is arranged along the length direction of the measuring rod 3, and the vertical level bubble is perpendicular to the measuring rod 3. When measuring the anchor drilling angle on the drilling machine, the level ruler 1 and the measuring rod 3 are adjusted to check the inclination angle of the drilling machine, thereby judging whether the anchor drilling angle meets the requirements.
[0033] The measuring rod 3 is also provided with a positioning member 9, the cross section of which is a T-shaped structure, including a supporting portion, a connecting platform is provided in the middle of the supporting portion, and the connecting platform is a hollow structure, and the connecting platform can be detachably mounted on the measuring rod 3; the shape and size of the inner surface of the connecting platform (the surface in contact with the measuring rod) are adapted to the shape and size of the measuring rod 3, and the length of the supporting portion is adapted to the diameter of the anchor hole. When the measuring rod 3 is extended into the anchor hole for measurement, under the action of the positioning member 9, the measuring rod 3 can be maintained at the center position of the anchor hole (reference Figure 5 ), the measuring rod 3 is always parallel to the axis of the anchor hole, thereby preventing the measuring rod 3 from deviating and increasing the measurement error.
[0034] The tool for measuring the drilling angle of tunnel anchor bolts of the utility model can be applied to the measurement of the drilling angle of anchor bolts in different occasions. In the application process, it is not only applicable to the measurement of the drilling angle of anchor bolts at different positions of the tunnel, but also applicable to the measurement of the drilling angle of anchor bolts on the slope.
[0035] refer to Figure 4 When measuring the anchor drilling angle at the top of the tunnel, the magnet 7 passes through the level ruler 1 from the mounting hole 11 in the middle of the level ruler 1, and the magnet 7 is adsorbed on the bottom of the runway of the drilling machine or the drill rod. The level ruler 1 is rotated to make the level ruler 1 parallel to the bottom of the runway of the drilling machine or the drill rod, and the measuring rod 3 is rotated. The state of the measuring rod 3 is observed through the vertical level bubble on the measuring rod, and the measuring rod 3 is in a vertical state. After fixing the measuring rod 3 by the adjusting part 5, the angle between the level ruler 1 and the measuring rod 3 is measured to measure the anchor drilling angle.
[0036] After the anchor hole is drilled to a certain depth, when measuring the drilling angle of the tunnel anchor, the level 1 is placed against the tunnel wall, the measuring rod 3 is inserted into the anchor hole, the level 1 is adjusted to keep it vertical, the measuring rod 3 is adjusted to make it parallel to the axis of the anchor hole, and after fixing the measuring rod 3 with the adjusting member 5, the anchor drilling angle can be measured by measuring the angle between the level 1 and the measuring rod 3.
[0037] refer to Figure 5 When measuring the anchor drilling angle on the slope, drill an anchor hole of a certain depth according to a preset angle, then extend the measuring rod 3 into the anchor hole, adjust the level 1 to keep it horizontal, adjust the measuring rod 3 to make it parallel to the axis of the anchor hole, and after fixing the measuring rod 3 with the adjusting member 5, the anchor drilling angle can be measured by measuring the angle between the level 1 and the measuring rod 3.
[0038] The above is only a detailed description of the specific implementation of the utility model, rather than a limitation of the utility model. Various substitutions, modifications and improvements made by technicians in the relevant technical field without departing from the principle and scope of the utility model should be included in the protection scope of the utility model.
Claims
1. A tool for measuring the drilling angle of a tunnel anchor, characterized in that: include: A level (1), a protractor (2) and a measuring rod (3), wherein the level (1) is provided with a level bubble (4), the protractor (2) is provided on the level (1), and the measuring rod (3) is rotatably connected to the center of the protractor (2); an arc groove (21) is circumferentially provided on the protractor (2), a first end of the measuring rod (3) passes through the arc groove (21) and extends to the scale of the protractor (2), and an adjusting member (5) for adjusting the tightness of the measuring rod (3) is provided at the arc groove (21).
2. The tool for measuring the drilling angle of a tunnel bolt according to claim 1, characterized in that: One or more mounting holes (11) are provided in the length direction of the level ruler (1).
3. The tool for measuring the drilling angle of a tunnel bolt according to claim 2, characterized in that: The level ruler (1) is provided with a blocking member (6) for limiting the position of the protractor, and the blocking member (6) is arranged at the mounting hole (11).
4. The tool for measuring the drilling angle of a tunnel bolt according to claim 3, characterized in that: The blocking member (6) is a rectangular block, and the rectangular block is arranged below the mounting hole (11). The protractor (2) is a semicircular structure, and the bottom of the protractor (2) contacts the top of the rectangular block.
5. The tool for measuring the drilling angle of a tunnel bolt according to claim 3, characterized in that: The blocking member (6) is a U-shaped block, and an L-shaped block is arranged on the back of the protractor (2). The width of the L-shaped block matches the width of the U-shaped block, and the L-shaped block is engaged with the U-shaped block.
6. The tool for measuring the drilling angle of a tunnel bolt according to claim 2, characterized in that: The level ruler (1) is provided with a magnet (7) for fixing the level ruler (1); the magnet (7) is a cylindrical structure; the diameter of the magnet (7) is matched to the diameter of the mounting hole (11).
7. The tool for measuring the drilling angle of a tunnel bolt according to claim 1, characterized in that: The first end portion of the measuring rod (3) is sharp.
8. The tool for measuring the drilling angle of a tunnel bolt according to claim 1, characterized in that: The vial (4) comprises a horizontal vial and a vertical vial. The horizontal vial is arranged on the top of the level (1). The two vertical vials are respectively vertically arranged near the left and right ends of the level (1). The axis of the horizontal vial is perpendicular to the axis of the vertical vial.
9. The tool for measuring the drilling angle of a tunnel bolt according to any one of claims 1 to 8, characterized in that: The measuring rod (3) is provided with a positioning piece (9), the cross section of the positioning piece (9) is a T-shaped structure, the positioning piece (9) comprises a supporting portion, a connecting platform is provided in the middle of the supporting portion, the connecting platform is a hollow structure, and the connecting platform can be detachably mounted on the measuring rod (3).
10. The tool for measuring the drilling angle of a tunnel bolt according to any one of claims 1 to 8, characterized in that: The protractor (2) is made of iron material or plastic, the measuring rod (3) is made of iron material or plastic, and the level ruler (1) is made of iron material or plastic.