Displacement monitoring device for anchoring pull-out test
By designing a displacement monitoring device that includes a fixed base, a telescopic rod, a universal rod, and a dial indicator, the problem of accuracy in displacement monitoring during anchor bolt anchorage quality inspection was solved. This enabled efficient and accurate displacement measurement under complex field conditions, improving the accuracy of anchorage bearing capacity determination.
Patent Information
- Application Number
- CN202423061343.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In existing technologies, displacement monitoring devices for anchor bolt anchorage quality testing are difficult to accurately obtain in complex construction sites, affecting the accuracy of anchorage bearing capacity determination.
A displacement monitoring device was designed, comprising a fixed base, a telescopic rod, a universal rod, a dial indicator, and a displacement monitoring plate. The fixed base is used to fix the device near the anchor slope, and the universal rod and dial indicator are used to measure the displacement of the anchor. The measurement accuracy is ensured by the combination of limiting components and clamping bolts.
It enables precise measurement of anchor displacement under complex field conditions, improves the accuracy and efficiency of anchor bearing capacity determination, and has strong applicability and accurate measurement results.
Smart Images
Figure CN223795937U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the anchor rod detection technical field especially relates to a displacement monitoring device for anchorage pullout test. BACKGROUND
[0002] The anchor rod is widely used in the engineering slope protection, the tunnel construction at present with its simple process, the low -cost economic characteristic. The pullout test is a kind of method for detecting the anchoring quality of anchor rod, and the anchoring bearing capacity of anchor rod is judged by the relevant monitoring data such as anchor head displacement, force value. Whether the law of the stress of anchor rod with displacement can be correctly monitored is the key to the success of test, and displacement monitoring is the focus of test.
[0003] The stress of anchor rod can be loaded by hydraulic jack, and is obtained by force sensor, and the displacement data is obtained, and due to the complex construction site, it is difficult to accurately obtain, and the related specification does not clearly give the displacement data measuring device. Based on the urgent requirement of anchorage pullout test, a displacement monitoring device is needed. UTILITY MODEL CONTENT
[0004] In view of the deficiencies in the prior art, the utility model provides a displacement monitoring device for anchorage pullout test, which is reasonable in structure design and can accurately measure position data.
[0005] The utility model provides a kind of displacement monitoring device for anchorage pullout test, and the anchor rod to be detected is arranged in the through jack, and is fixed by anchor tool being arranged above the through jack, and the displacement monitoring device includes:
[0006] Fixed seat is fixed on the slope, close to the through jack;
[0007] Telescopic rod, its bottom end is fixed on the fixed seat, and the axis direction is perpendicular to the fixed seat surface;
[0008] Universal bar, one end is fixed in the top of telescopic rod, universal joint is arranged between the universal bar and telescopic rod, and the universal bar can rotate in any direction;
[0009] Dial gauge, it is arranged in the other end of universal bar;
[0010] Displacement monitoring plate, it is fixed in the lower end of dial gauge, and the displacement monitoring plate is fixed with the top end of anchor rod to be detected;
[0011] The dial gauge obtains the displacement data of the anchor rod to be detected by measuring the displacement of the displacement monitoring plate.
[0012] The fixed seat is installed near the slope of the anchor rod to be detected, and the fixed seat can be fixed according to the actual situation on the site, so that the applicability is stronger and more flexible.
[0013] In some embodiments of the application, the fixed seat is an angle steel welded to form a "П" structure, including a horizontal upper surface, side surfaces arranged on both sides of the upper surface and perpendicular to the upper surface, and the upper surface and the two side surfaces form a "П" structure, which can be placed in a position not easy to install, such as a slope or a corner of a wall, thereby improving the applicability of the device.
[0014] In some embodiments of the application, one end of the upper surface is provided with a mounting hole for fixing the bottom end of the telescopic rod, and the other end of the upper surface symmetrical to the mounting hole is also provided with a fixing hole capable of mounting an expansion bolt, and the fixing hole and the mounting hole are respectively located at two ends of the upper surface, which is beneficial to improve the balance and stability of the device during installation and use.
[0015] In some embodiments of the application, corresponding positions of the two side surfaces near the fixing hole are respectively provided with a second fixing hole, when the fixed seat is fixed on the upper surface of the corner of the wall or other positions where it is not convenient to install the expansion bolt, the expansion bolt is transversely inserted into the two second fixing holes in sequence to fix the fixed seat on the wall surface, while maintaining the balance and stability of the device during use.
[0016] In some embodiments of the application, a limiting piece is arranged on the bottom surface of the displacement monitoring plate, and a clamping bolt is arranged on the limiting piece, when the anchor pull-out test is performed, the top end of the anchor rod is located in the limiting piece and abuts against the displacement monitoring plate, and the top end of the anchor rod is fixed in the limiting piece through the clamping bolt, so that the dial gauge can accurately detect the displacement of the anchor rod.
[0017] In some embodiments of the application, the limiting piece is a hollow cylindrical structure, the limiting piece is coaxial with the anchor rod, and the clamping bolt clamps the anchor rod in the radial direction of the limiting piece.
[0018] In some embodiments of the application, universal joints are arranged at the connection between the universal rod and the telescopic rod, the middle position of the universal rod, and the connection between the universal rod and the dial gauge, so that the direction of the dial gauge can be adjusted according to different working conditions.
[0019] In some embodiments of the application, the telescopic rod and the universal rod are an integral structure, which is convenient for on-site detection and carrying, and improves the work efficiency of detection.
[0020] Based on the above technical scheme, the displacement monitoring device of the embodiments of the application installs the fixed seat near the slope of the anchor rod to be detected, and the fixed seat can be fixed according to the actual situation on the site, so that the applicability is stronger and more flexible.
[0021] The dial gauge measures the displacement of the anchor rod by detecting the displacement detection plate, and the measurement result is accurate. BRIEF DESCRIPTION OF DRAWINGS
[0022] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:
[0023] Figure 1 A structure schematic view of the displacement monitoring device of the embodiment of the present application fixed on a slope;
[0024] Figure 2 A structure schematic view of the fixing base of the embodiment of the present application;
[0025] Figure 3 A structure schematic view of the displacement monitoring device of another embodiment of the present application fixed on a corner.
[0026] In the drawings,
[0027] 10, anchor rod; 20, through jack; 30, fixing base; 31, upper surface; 311, mounting hole; 312, fixing hole; 32, side surface; 321, second fixing hole 321; 33, expansion bolt; 40, slope; 50, telescopic rod; 60, universal rod; 70, dial gauge; 80, displacement monitoring plate; 81, limiting piece; 82, clamping bolt. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0029] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0030] The terms "first", "second", "third", are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.
[0031] In the description of the utility model, it needs to explain, unless another explicit stipulation and limitation, the term "installation", "connection", "connect" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can be indirectly connected through the intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.
[0032] As shown in the accompanying Figures 1-2 The displacement monitoring device for anchorage pull-out test of the embodiment, the anchor rod 10 to be detected is arranged in the through jack 20 and is fixed through the anchor device 21 arranged above the through jack 20, and the displacement monitoring device comprises:
[0033] The fixed seat 30 is fixed on the side slope 40 and is close to the installation position of the through jack 20;
[0034] The telescopic rod 50 is vertically arranged, and the bottom end thereof is fixed on the fixed seat 30, and the axial direction is perpendicular to the upper surface of the fixed seat 30;
[0035] The universal rod 60 is fixed at the top of the telescopic rod 50, a universal joint 61 is arranged between the universal rod 60 and the telescopic rod, and the universal rod 60 can rotate in any direction;
[0036] The dial gauge 70 is arranged at the other end of the universal rod 60;
[0037] The displacement monitoring plate 80 is fixed at the lower end of the dial gauge 70, and the displacement monitoring plate 80 is fixed with the top end of the anchor rod 10 to be detected;
[0038] The dial gauge obtains the displacement data of the anchor rod to be detected by measuring the displacement of the displacement monitoring plate.
[0039] In the technical scheme, the fixed seat 30 is installed near the side slope of the anchor rod 10 to be detected, the fixed seat can be fixed according to the actual situation on site, the anchor rod 10 to be detected is subjected to tension through the through jack 20, the displacement monitoring plate 80 moves along with the displacement of the anchor rod 10 to be detected under stress, drives the pointer of the dial gauge 70 to deflect, and the displacement value of the anchor rod 10 to be detected can be accurately recorded through the reading of the dial gauge 70, so that the anchor rod displacement can be quickly measured, and the precision is high.
[0040] Further, asFigure 3 As shown, the fixing base 30 is formed by welding angle steel, including an upper surface 31 arranged horizontally, side surfaces 32 arranged on both sides of the upper surface 31 and extending downward perpendicularly to the upper surface 31, the upper surface 31 and the two side surfaces 32 form a "П" structure, a space is formed inside, providing installation space for fixing the bottom of the telescopic rod 50 and fixing the fixing base 30 on the slope 40, and enabling the device to be placed in a position that is not easy to install, such as a slope with different slopes or a corner, ensuring the stability and accuracy of the measurement.
[0041] Continuing to refer to Figure 3 , one end of the upper surface 31 of the fixing base 30 is provided with a mounting hole 311 for fixing the bottom end of the telescopic rod 50, and the other end of the upper surface 31 symmetrically with the mounting hole 311 is also provided with a fixing hole 312 capable of mounting an expansion bolt 33, by inserting the expansion bolt 33 into the fixing hole 312 and connecting with the slope 40, the overall stability of the fixing base 30 is enhanced, the symmetrical hole design facilitates the installation and adjustment of the device, and enables the device to balance the stress when the tension is applied, avoiding the situation of tilting or loosening, and ensuring the stable operation of the device during use.
[0042] On the two side surfaces 32 of the fixing base 30, second fixing holes 321 are arranged near the fixing holes 312, as Figure 3 shown, when the fixing base 30 is fixed at a position such as a corner, it is not convenient to install an expansion bolt on the upper surface 31 of the fixing base 30, so the expansion bolts 33 are sequentially inserted through the two second fixing holes 321 transversely to stably install the fixing base 30 on the wall surface, while maintaining the balance and stability of the device during use, making it more secure in the anchorage pullout test, and avoiding loosening or displacement caused by external force.
[0043] As Figure 1 shown, a limiting piece 81 is arranged on the bottom surface of the displacement monitoring plate 80, and a clamping bolt 82 is arranged on the limiting piece 81, the clamping bolt 82 firmly fixes the top end of the anchor rod 10 inside the limiting piece 81 by radial force, avoiding the deviation of the anchor rod 10 caused by vibration or displacement during the test, when the anchorage pullout test is performed, the top end of the anchor rod 10 is located inside the limiting piece 81 and abuts against the displacement monitoring plate 80, and the top end of the anchor rod 10 is fixed in the limiting piece by the clamping bolt 82. The displacement monitoring plate 80 displaces with the pulling movement of the anchor rod 10, the dial gauge 70 reflects the actual movement of the anchor rod 10 through the displacement, providing accurate displacement data, the design of the limiting piece 81 and the clamping bolt 82 enables the anchor rod 10 to be installed quickly and conveniently, reducing the operation difficulty and installation time, the limiting piece ensures the reliable contact of the top end of the anchor rod with the displacement monitoring plate, avoiding installation deviation, and improving the measurement accuracy.
[0044] In the embodiment, the limiting piece 81 is in a hollow cylindrical structure, the inner diameter of which matches the outer diameter of the anchor rod 10, the limiting piece 81 is coaxial with the anchor rod 10, and the clamping bolt 82 clamps the anchor rod 10 in the radial direction of the limiting piece 81. When the anchor rod 10 is inserted into the limiting piece 81, the top end of the anchor rod 10 abuts against the displacement monitoring plate 80, and by rotating the clamping bolt 82, the end of the clamping bolt 82 moves inward in the radial direction, tightly pressing the outer surface of the anchor rod 10, so as to lock the anchor rod 10 in the limiting piece 81. Since the limiting piece 81 and the anchor rod 10 are coaxially arranged, the measurement direction of the displacement monitoring plate 80 is kept consistent with the movement direction of the anchor rod 10, avoiding errors in displacement measurement.
[0045] In other embodiments of the present application, the limiting piece 81 can adopt other structural shapes, such as a rectangular groove or a V-shaped groove, to adapt to anchor rods 10 of different shapes or specifications.
[0046] The connection between the universal rod 60 and the telescopic rod 50, the middle position of the universal rod 60, and the connection between the universal rod and the dial gauge 70 are all provided with universal joints 61, so that the posture of the universal rod 60 can be flexibly adjusted in multiple dimensions according to different use conditions, ensuring that the dial gauge 70 can always be aligned with the displacement monitoring plate 80. The universal joint can adopt a spherical joint, a rotary joint or a flexible connecting piece, so as to achieve more flexible adjustment effect.
[0047] In the embodiment, the telescopic rod 50 and the universal rod 60 are in an integrated structure, and in the manufacturing process, the telescopic rod 50 and the universal rod 60 are connected as a whole through integral casting, welding or integrated machining process. Compared with the traditional split structure, the integrated design avoids the problem of loose connection between the telescopic rod and the universal rod, reduces the assembly and disassembly steps of the device, reduces the operation burden of the operator and the later maintenance cost, facilitates on-site detection and carrying, and improves the working efficiency of detection.
[0048] Based on the above technical scheme, the displacement monitoring device of the embodiment of the present application can fix the fixed seat near the slope of the anchor rod to be detected according to the actual situation on site, has higher applicability and is more flexible.
[0049] The dial gauge measures the displacement of the anchor rod by detecting the displacement detection plate, and the measurement result is accurate.
[0050] Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to.
[0051] The above examples are only used to illustrate the technical solutions of the present application and not to limit them; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, all of them should be covered in the technical solution range of the present application claimed.
Claims
1. A displacement monitoring device for an anchor pullout test, an anchor rod to be tested is arranged in a through jack and is fixed by an anchor device arranged above the through jack, characterized in that, The displacement monitoring device comprises: A fixed seat is fixed on the slope and close to the through jack; A telescopic rod is fixed at the bottom end of the fixed seat, and the axis direction is perpendicular to the surface of the fixed seat; A universal rod is fixed at the top of the telescopic rod, and a universal joint is arranged between the universal rod and the telescopic rod, and the universal rod can rotate in any direction; A dial indicator is arranged at the other end of the universal rod; A displacement monitoring plate is fixed at the lower end of the dial indicator, and the displacement monitoring plate is fixed with the top end of the anchor rod to be detected; a limiting piece is arranged on the bottom surface of the displacement monitoring plate, and a clamping bolt is arranged on the limiting piece; when the anchor pull-out test is performed, the top end of the anchor rod is located in the limiting piece and abuts against the displacement monitoring plate, and the top end of the anchor rod is fixed in the limiting piece through the clamping bolt; The displacement monitoring plate obtains the displacement data of the anchor rod to be detected by measuring the displacement of the displacement monitoring plate.
2. The displacement monitoring device for anchor pullout tests according to claim 1, characterized in that, The fixed seat is formed by welding angle steel, and comprises a horizontal upper surface and side surfaces arranged on both sides of the upper surface and perpendicular to the upper surface; the upper surface and the two side surfaces form a "П" structure, which can be placed on slopes or corner positions with different slopes.
3. The displacement monitoring device for anchor pullout tests according to claim 2, characterized in that, One end of the upper surface is provided with a mounting hole for fixing the bottom end of the telescopic rod, and the other end of the upper surface symmetrical to the mounting hole is also provided with a fixing hole for mounting an expansion bolt; the fixing hole and the mounting hole are respectively located at the two ends of the upper surface.
4. The displacement monitoring device for anchor pullout tests according to claim 3, characterized in that Corresponding positions of the two side surfaces close to the fixing hole are respectively provided with a second fixing hole, and the expansion bolt passes through the two second fixing holes in sequence to install the fixed seat on the wall surface.
5. The displacement monitoring device for anchor pullout tests according to claim 1, characterized in that, The limiting piece is in a hollow cylindrical structure, and the limiting piece is coaxial with the anchor rod; the clamping bolt clamps the anchor rod in the radial direction of the limiting piece.
6. The displacement monitoring device for anchor pullout tests of claim 1, wherein, Universal joints are arranged at the connection between the universal rod and the telescopic rod, the middle position of the universal rod, and the connection between the universal rod and the dial indicator.
7. The displacement monitoring device for anchor pullout tests of claim 1, wherein, The telescopic rod and the universal rod are in an integrated structure.