Anchor cable drilling angle measuring device

Abstract

The utility model provides an anchor cable drilling angle measuring device which comprises three measuring rods which are arranged side by side in parallel and are adjustable in length, a locking mechanism which is arranged on the measuring rods and is used for fixing the length of the measuring rods, and a plurality of positioning pieces which are arranged along the length direction of the measuring rods, the adjusting mechanism is connected to the end portion of the measuring rod and used for adjusting the diameter of the positioning piece, the protractor is arranged at the end portion of the adjusting mechanism in the axis direction of the measuring rod, and the plumb bob assembly is connected with the center point of the protractor. A stable system is formed among the measuring rod, the positioning piece and the drill hole, it can be ensured that the measuring device and the drill hole are in a coaxial state, measurement errors caused by shaking or deviation of the device are effectively prevented, the accuracy and reliability of measurement are improved, the protractor is used in cooperation with the plumb bob assembly, and the measuring accuracy and reliability are improved. The angle measurement is more visual and accurate, the operation is simple, and the measurement working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering quality detection, and in particular relates to an anchor cable drilling angle measuring device. Background Art

[0002] The anchor cable technology is an engineering technology mainly used to reinforce rocks, soils or other types of unstable geological structures to improve their stability and bearing capacity. This technology connects unstable rock and soil bodies with stable rock and soil bodies or structures through anchor cables to achieve the purpose of improving overall stability and bearing capacity. It plays an important role in slope protection, tunnel and underground engineering, foundation pit excavation and gold mine tunnels, effectively preventing the deformation and collapse of rock and soil bodies and ensuring the safety and stability of the project. The main steps of the anchor cable technology include: drilling - placing the anchor cable into a hole of a predetermined depth - grouting into the hole to fill the pores - prestressing - finally locking the anchor cable through the anchor and sealing the anchor section.

[0003] The angle of the anchor cable directly affects its stress state. The correct drilling angle can make the anchor cable better adapt to the stress distribution of the rock and soil after prestressing, effectively transmit the tension, and enhance the overall stability of the support structure. The incorrect drilling angle may cause the anchor cable to cause unnecessary shearing or squeezing of the surrounding rock and soil during the tensioning process, causing damage to the rock and soil, affecting the support effect, and even causing safety accidents. Therefore, the drilling angle needs to be measured before installing the anchor cable; however, traditional measurement methods, such as the plumb line method, are simple but have limited accuracy and are greatly affected by human operation, which can easily lead to measurement errors and low measurement efficiency, making it difficult to meet the needs of large-scale or high-precision projects. Summary of the invention

[0004] The purpose of the utility model is to provide a device for measuring the angle of anchor cable drilling holes, so as to solve the problems existing in the above-mentioned prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A device for measuring the angle of an anchor cable drilling hole comprises three measuring rods which are arranged in parallel and have adjustable lengths, a locking mechanism which is arranged on the measuring rods and is used to fix the lengths of the measuring rods, a plurality of positioning members arranged along the length direction of the measuring rods, an adjusting mechanism which is connected to the ends of the measuring rods and is used to adjust the diameters of the positioning members, a protractor which is arranged at the ends of the adjusting mechanism along the axial direction of the measuring rods, and a plumb bob assembly which is connected to the center point of the protractor.

[0007] Preferably, the three measuring rods are respectively a measuring main rod located in the middle, and measuring guide rods located on both sides of the measuring main rod, and the measuring rods include: a multi-section support rod with a hollow interior and an open bottom, the multi-section support rods are slidably connected from top to bottom in sequence, and the locking mechanism is arranged between the support rods.

[0008] Preferably, the locking mechanism includes: a locking head connected to the bottom end of the support rod, a plurality of elastic locking plates evenly arranged around the end of the locking head, and a locking sleeve threadedly connected to the outer surface of the locking head, wherein a conical cavity is provided inside the locking sleeve for gathering the ends of the plurality of elastic locking plates.

[0009] Preferably, a rubber pad is provided on the inner side of the elastic locking piece, and an anti-slip pattern is provided on the inner side of the rubber pad.

[0010] Preferably, the adjustment mechanism includes: a threaded rod fixedly connected to the top end of the measuring main rod, a threaded sleeve threadedly mounted on the threaded rod, and an annular groove arranged at the bottom of the threaded sleeve, and the top ends of the two measuring guide rods are connected in the annular groove through a slider.

[0011] Preferably, the positioning member includes: a fixed ring fixedly sleeved on the outside of the measuring main rod and movably connected to the measuring guide rod, a movable ring movably sleeved on the outside of the measuring main rod and fixedly connected to the measuring guide rod, a plurality of first positioning rods arranged around the fixed ring and hinged at ends to the fixed ring, and a plurality of second positioning rods one end of which is hinged to the first positioning rod and the other end of which is hinged to the movable ring.

[0012] Preferably, one end of the first positioning rod and the second positioning rod at which they are hinged to each other is tapered.

[0013] Preferably, the protractor comprises: a mounting rod detachably connected to the end of the adjustment mechanism and coaxially arranged with the measuring rod, and a protractor body connected to the mounting rod and having a scale.

[0014] Preferably, the plumb bob assembly comprises: a connecting line connected to the mounting rod and with its end located at the center point of the protractor body, a gravity hammer connected to the connecting end, and a mounting sleeve arranged on the mounting rod and threadably connected to the gravity hammer.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] 1. The utility model adjusts the diameter of the positioning piece through the adjustment mechanism, so that the positioning piece can fit tightly on the wall of the borehole. Multiple positioning pieces can ensure that the measuring device is in a coaxial state with the borehole. A stable system is formed between the measuring rod, the positioning piece and the borehole, which can effectively prevent the measurement error caused by the shaking or deviation of the device, thereby improving the accuracy and reliability of the measurement. By setting the measuring rod with adjustable length, not only the device is convenient for storage and transportation, but also the measuring rod can be fully extended into the borehole, further improving the measurement accuracy. By using the protractor at the end of the adjustment mechanism in conjunction with the plumb bob assembly, the angle measurement is more intuitive and accurate, the measurement steps are simplified, the consistency and convenience of the measurement are guaranteed, and the measurement needs under various complex geological conditions and engineering requirements can be met.

[0017] 2. The utility model has a clear structure and a simple operation process. It can quickly measure the drilling angle, reduce the on-site construction preparation time, improve work efficiency, and also reduce the labor intensity of workers;

[0018] 3. The utility model uses the sliding sleeve connection of multiple support rods to adjust the measuring rod to the required length according to the actual drilling length, and can be applied to drillings of different lengths, greatly improving the versatility and flexibility of the device. The cooperation of the elastic locking piece and the locking sleeve realizes the firm connection between the support rods, thereby realizing the locking of the measuring rod length, avoiding the shaking or loosening of the measuring rod during use, and further improving the accuracy of the measurement results;

[0019] 4. The utility model drives the measuring guide rod to move by moving the threaded sleeve on the threaded rod, and then drives the moving ring connected to the measuring guide rod to move, and applies a force to the first positioning rod and the second positioning rod between the moving ring and the fixed ring, so that the first positioning rod and the second positioning rod rotate around the hinge point, thereby adjusting the diameter of the positioning piece, so that the measuring device can be applied to the measurement of boreholes of different diameters. The multiple positioning pieces arranged along the length direction can ensure that the device and the borehole remain coaxial, thereby ensuring the accuracy and stability of the angle measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a device for measuring the angle of anchor cable drilling;

[0022] Figure 2 A schematic diagram of the structure of a measuring rod of an anchor cable drilling angle measuring device;

[0023] Figure 3 It is a structural schematic diagram of a locking mechanism of an anchor cable drilling angle measuring device;

[0024] Figure 4 It is a structural schematic diagram of a positioning component of an anchor cable drilling angle measuring device;

[0025] Figure 5 A schematic diagram of the structure of a protractor and plumb bob assembly of an anchor cable drilling angle measuring device;

[0026] Figure markings: 1-measuring rod, 2-locking mechanism, 3-positioning piece, 4-adjusting mechanism, 5-protractor, 6-bolt assembly, 7-measuring main rod, 8-measuring guide rod, 9-support rod, 10-locking head, 11-elastic locking plate, 12-locking sleeve, 13-conical cavity, 14-rubber pad, 15-threaded rod, 16-threaded sleeve, 17-annular slide groove, 18-fixed ring, 19-movable ring, 20-first positioning rod, 21-second positioning rod, 22-mounting rod, 23-protractor body, 24-connecting line, 25-gravity hammer, 26-mounting sleeve. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0030] In addition, the terms “first”, “second”, “third”, etc., if used, are merely used to distinguish the descriptions and should not be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0034] like Figure 1-3 As shown, an anchor cable drilling angle measuring device includes three measuring rods 1 arranged in parallel and adjustable in length, a locking mechanism 2 arranged on the measuring rod 1 and used to fix the length of the measuring rod 1, a plurality of positioning members 3 arranged along the length direction of the measuring rod 1, an adjusting mechanism 4 connected to the end of the measuring rod 1 and used to adjust the diameter of the positioning member 3, a protractor 5 arranged at the end of the adjusting mechanism 4, and a plumb bob assembly 6 connected to the center point of the protractor 5.

[0035] When in use, first adjust the length of the measuring rod 1 according to the depth of the borehole, so that the measuring rod 1 can be fully extended into the borehole, the adjusting mechanism 4, the protractor 5, and the plumb bob assembly 6 are all located outside the hole, and the locking mechanism 2 is used to fix the length of the measuring rod 1 and send the measuring rod 1 into the hole, and the adjusting mechanism 4 adjusts the diameter of the positioning member 3 according to the borehole diameter, so that the positioning member 3 can fit tightly on the borehole wall, thereby ensuring that the measuring device and the borehole are in a coaxial state, and finally, under the action of the gravity of the plumb bob assembly 6 itself, in conjunction with the protractor 5, an angle can be obtained simply, directly and accurately, and the drilling angle can be further obtained based on this angle, which greatly improves the measurement accuracy and efficiency of the anchor cable drilling angle. When the measurement is completed, it is necessary to control the adjusting mechanism 4 to make the positioning member 3 away from the borehole wall, and then the device can be taken out; the device of the utility model has a clear structure, and the operation process is intuitive and easy to understand, which reduces the requirements on the skill level of the operator, reduces the difficulty of operation, and improves work efficiency.

[0036] The three measuring rods 1 are respectively a measuring main rod 7 located in the middle and measuring guide rods 8 located on both sides of the measuring main rod 7. Figure 2 As shown, the measuring rod 1 includes: a multi-section support rod 9 having a hollow interior and an open bottom end, the multi-section support rod 9 is slidably sleeved from top to bottom in sequence, and the locking mechanism 2 is arranged between the support rods 9.

[0037] like Figure 3 As shown, the locking mechanism 2 includes: a locking head 10 connected to the bottom end of the support rod 9, a plurality of elastic locking pieces 11 evenly arranged around the end of the locking head 10, and a locking sleeve 12 threadedly connected to the outer surface of the locking head 10, wherein a conical cavity 13 is provided inside the locking sleeve 12 for collecting the ends of the plurality of elastic locking pieces 11.

[0038] The inner side of the elastic locking piece 11 is provided with a rubber pad 14, and the inner side of the rubber pad 14 is provided with anti-skid patterns; the design of the rubber pad 14 and the anti-skid patterns increases friction, further improving the stability and reliability of locking.

[0039] When it is necessary to adjust the length of the measuring rod 1 according to the depth of the borehole, the lower support rod 9 can be slid inside the upper support rod 9, and then the locking sleeve 12 is rotated. Since a conical cavity 13 is provided inside the locking sleeve 12, as the locking sleeve 12 rotates and moves downward, the diameter of the conical cavity 13 gradually decreases, thereby forcing the end of the elastic locking piece 11 to converge toward the center, so that the elastic locking piece 11 tightly clamps the outer wall of the inner support rod 9, thereby firmly connecting the support rods 9, and completing the adjustment of the length of the measuring rod 1. Simple rotation and push-pull actions can realize the length adjustment and locking of the measuring rod 1. The operation is simple and quick, which improves work efficiency and ensures the accuracy of measurement.

[0040] like Figure 1 As shown, the adjustment mechanism 4 includes: a threaded rod 15 fixedly connected to the top of the measuring main rod 7, a threaded sleeve 16 provided on the threaded rod 15, and an annular chute 17 provided at the bottom of the threaded sleeve 16, and the tops of the two measuring guide rods 8 are connected to the annular chute 17 through a slider.

[0041] like Figure 4 As shown, the positioning member 3 includes: a fixed sleeve on the outer side of the measuring main rod 7 and movably connected to the measuring guide rod 8 on a fixed ring 18, a movable ring 19 movably sleeved on the outer side of the measuring main rod 7 and fixedly connected to the measuring guide rod 8, a plurality of first positioning rods 20 arranged around the fixed ring 18 and hinged to the fixed ring 18 at one end, and a plurality of second positioning rods 21 hinged to the first positioning rod 20 at one end and hinged to the movable ring 19 at the other end.

[0042] Among them, one end of the first positioning rod 20 and the second positioning rod 21 hinged to each other is tapered; the tapered structure can fix the first positioning rod 20 and the second positioning rod 21 and embed them into the inside of the side wall of the foundation pit, further improving the stability and accuracy of the positioning of the measuring device in the borehole.

[0043] The working principle of the adjustment mechanism 4 for adjusting the positioning member 3 is as follows: rotating the threaded sleeve 16 causes the threaded sleeve 16 to move downward on the threaded rod 15, thereby driving the measuring guide rod 8 to move, thereby driving the movable ring 19 connected to the measuring guide rod 8 to move along the measuring main rod 7, thereby squeezing the first positioning rod 20 and the second positioning rod 21 hinged between the movable ring and the fixed ring 18, so that the mutually hinged ends of the first positioning rod 20 and the second positioning rod 21 move outward and finally conflict with the borehole wall to form support and positioning for the device in the hole, ensuring that the measuring device and the borehole are in a coaxial state. When the first positioning rod 20 and the second positioning rod 21 are tightly fitted on the hole wall, a stable system is formed among the measuring rod 1, the positioning member 3 and the borehole, which can effectively prevent measurement errors caused by shaking or offset of the device, and improve the accuracy and stability of the anchor cable drilling angle measurement process.

[0044] like Figure 5 As shown, the protractor 5 includes: a mounting rod 22 detachably connected to the end of the adjustment mechanism 4 and coaxially arranged with the measuring rod 1, and a protractor 5 body connected to the mounting rod 22 and having a scale.

[0045] The plumb bob assembly 6 includes: a connecting line 24 connected to the mounting rod 22 and with its end located at the center point of the protractor 5 body, a gravity hammer 25 connected to the connecting end, and a mounting sleeve 26 arranged on the mounting rod 22 and threadably connected to the gravity hammer 25.

[0046] The mounting rod 22 may be connected in a detachable manner such as threaded connection, bolt connection, snap connection, etc.

[0047] After installing the measuring device in the hole, take out the gravity hammer 25 from the installation sleeve 26. The gravity hammer 25 moves downward under the action of its own gravity and gradually tends to a stable state. When the gravity hammer 25 is stable, the connecting line 24 is always perpendicular to the ground. The angle corresponding to the scale line on the protractor 5 body that coincides with the connecting line 24 can be read to obtain the angle between the drilled hole and the horizontal plane. Combined with the known slope angle, the angle of the anchor cable drilling hole can be obtained; the protractor 5 body is detachably connected to the adjustment mechanism 4 through the installation rod 22, so that the protractor 5 body is easy to replace and repair, and the service life is extended. The installation sleeve 26 is aligned and stored when the gravity hammer 25 is not in use to avoid arbitrary swinging that affects the installation and transportation of the device.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described by referring to the preferred embodiments of the utility model, those skilled in the art should understand that various changes can be made in form and details without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. An anchor cable drilling angle measuring device, characterized in that: The invention comprises three measuring rods (1) arranged in parallel and adjustable in length, a locking mechanism (2) arranged on the measuring rod (1) and used to fix the length of the measuring rod (1), a plurality of positioning members (3) arranged along the length direction of the measuring rod (1), an adjusting mechanism (4) connected to the end of the measuring rod (1) and used to adjust the diameter of the positioning member (3), a protractor (5) arranged at the end of the adjusting mechanism (4) along the axial direction of the measuring rod (1), and a plumb bob assembly (6) connected to the center point of the protractor (5).

2. The anchor cable drilling angle measuring device according to claim 1, characterized in that: The three measuring rods (1) are respectively a measuring main rod (7) located in the middle, and measuring guide rods (8) located on both sides of the measuring main rod (7). The measuring rod (1) comprises: a plurality of supporting rods (9) which are hollow inside and open at the bottom. The plurality of supporting rods (9) are slidably sleeved in sequence from top to bottom, and the locking mechanism (2) is arranged between the supporting rods (9).

3. The anchor cable drilling angle measuring device according to claim 2, characterized in that: The locking mechanism (2) comprises: a locking head (10) connected to the bottom end of the support rod (9), a plurality of elastic locking pieces (11) evenly arranged around the end of the locking head (10), and a locking sleeve (12) threadedly connected to the outer surface of the locking head (10), wherein a conical cavity (13) is provided inside the locking sleeve (12) for collecting the ends of the plurality of elastic locking pieces (11).

4. The anchor cable drilling angle measuring device according to claim 3, characterized in that: The inner side of the elastic locking piece (11) is provided with a rubber pad (14), and the inner side of the rubber pad (14) is provided with anti-slip grooves.

5. The anchor cable drilling angle measuring device according to claim 2, characterized in that: The adjustment mechanism (4) comprises: a threaded rod (15) fixedly connected to the top end of the measuring main rod (7), a threaded sleeve (16) provided on the threaded rod (15), and an annular slide groove (17) provided at the bottom of the threaded sleeve (16), and the top ends of the two measuring guide rods (8) are connected to the annular slide groove (17) via a slide block.

6. The anchor cable drilling angle measuring device according to claim 5, characterized in that: The positioning member (3) comprises: a fixed sleeve on the outer side of the measuring main rod (7) and movably connected to the measuring guide rod (8) on a fixed ring (18); a movable ring (19) movably sleeved on the outer side of the measuring main rod (7) and fixedly connected to the measuring guide rod (8); a plurality of first positioning rods (20) arranged around the fixed ring (18) and having their ends hinged to the fixed ring (18); and a plurality of second positioning rods (21) having one end hinged to the first positioning rod (20) and the other end hinged to the movable ring (19).

7. The anchor cable drilling angle measuring device according to claim 6, characterized in that: One end of the first positioning rod (20) and the second positioning rod (21) where they are hinged to each other is tapered.

8. The anchor cable drilling angle measuring device according to claim 1, characterized in that: The protractor (5) comprises: a mounting rod (22) detachably connected to the end of the adjustment mechanism (4) and coaxially arranged with the measuring rod (1), and a protractor body (5) connected to the mounting rod (22) and having a scale.

9. The anchor cable drilling angle measuring device according to claim 8, characterized in that: The plumb bob assembly (6) comprises: a connecting line (24) connected to the mounting rod (22) and having its end located at the center point of the protractor (5) body, a gravity hammer (25) connected to the connecting end, and a mounting sleeve (26) disposed on the mounting rod (22) and threadably connected to the gravity hammer (25).

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