Anchor cable monitoring equipment with force and displacement real-time monitoring function
By combining anchor cable stress gauges and bidirectional displacement sensors in the anchor cable monitoring equipment, real-time monitoring of anchor cable load and displacement is achieved, solving the problem of the single function of existing anchor cable gauges, improving the reliability and response speed of monitoring, and ensuring the continuity of structural safety assessment.
Patent Information
- Application Number
- CN202511304682.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2026-01-20
AI Technical Summary
Existing anchor gauges can only measure the load and prestress changes of structures such as anchor cables and anchor rods, which is limited in function and their reliability needs to be improved.
An anchor cable monitoring equipment with real-time force and displacement monitoring functions is adopted, including fixed anchors, anchor cable stress gauges, bidirectional displacement sensors, and movable anchors. The load is measured by the anchor cable stress gauges, and the axial displacement of the anchor cable is monitored by the displacement sensors, forming a dual redundant sensing system to realize real-time monitoring of anchor cable slippage.
It improves the response speed and reliability of anchor cable monitoring, ensures the continuity of structural safety assessment, and enhances the stability and ease of installation of the anchoring system.
Smart Images
Figure CN121364030A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of structural safety monitoring, in particular to an anchor cable monitoring device with force and displacement real-time monitoring functions. BACKGROUND
[0002] An anchor cable dynamometer is a sensor for monitoring the anchoring state of prestressed anchor cables of hydraulic structures and other concrete structures, rock slopes, bridges, etc. The anchor cable dynamometer is generally designed based on a vibrating string, and has two strings, three strings, four strings, six strings, etc. according to the number of vibrating strings. The real-time measurement values of each branch strain sensor of the dynamometer are read out by a vibrating string frequency reader, and the pressure applied by the anchor cable can be calculated using the instrument characteristic parameters. However, the current vibrating string type anchor cable meter can only monitor the load and prestress changes of anchor cables, anchor rods and other structures, and the function is too single, and the reliability needs to be improved. SUMMARY
[0003] The present application aims to provide an anchor cable monitoring device with force and displacement real-time monitoring functions to solve the problem that the current anchor cable meter can only single measure the load and prestress changes of anchor cables, anchor rods and other structures.
[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an anchor cable monitoring device with force and displacement real-time monitoring functions, comprising a fixed anchor, an anchor cable stress meter, a bidirectional displacement sensor and a movable anchor, the anchor cable stress meter is axially provided with a through hole, one end of the anchor cable stress meter is connected with the fixed anchor, a limiting groove is arranged at the through hole of the other end of the anchor cable stress meter, the movable anchor is slidably connected with the limiting groove, one end of the bidirectional displacement sensor is fixedly connected with the movable anchor, the other end of the bidirectional displacement sensor is connected with the fixed anchor, the movable anchor and the bidirectional displacement sensor are located within the range of the through hole of the anchor cable stress meter, and anchor cable holes are respectively arranged on the fixed anchor and the movable anchor for the anchor cable to pass through.
[0005] The principle of the present application is as follows: first, the anchor cable and the movable anchor are rigidly fixed through a mechanical locking mechanism, then the movable anchor and the bidirectional displacement sensor are pushed into the limiting groove inside the anchor cable stress meter to complete the initial positioning of the anchor, and then the anchor cable stress meter is fixed on the corresponding structure to be measured through the fixed anchor to complete the installation of the anchor cable meter. When the anchor cable is subjected to the force of the structure to be measured, the anchor cable will produce axial displacement, which will directly drive the movable anchor to move synchronously, and the bidirectional displacement sensor will monitor the dynamic change, thereby realizing real-time monitoring of the anchor cable slip amount. At the same time, the load of the anchor cable is measured by the anchor cable stress meter, and the deformation trend of the rock-soil body can be directly reflected in combination with the displacement monitoring, and the safety hidden danger can be more accurately evaluated in combination with the load data.
[0006] The scheme has the advantages that: the scheme forms a compact composite sensing unit by combining a displacement sensor and a cable stress meter, micro-displacement of an internal movable anchor and changes of an external fixed anchor are obtained at the same time, a double-redundancy sensing system is formed by fusing a displacement monitoring module, when the stress meter enters a failure threshold, a compensation mechanism of displacement data is not affected, response speed is improved compared with a traditional single sensing scheme, and the continuous safety evaluation of the structure is ensured.
[0007] Preferably, the limiting groove is a ring-shaped limiting groove. The ring-shaped limiting groove can keep the movable anchor stable in axial position during movement, reduce displacement caused by vibration or movement, and has a simple structure, which facilitates installation,
[0008] Preferably, the limiting groove is formed by a limiting block and an inner surface of a through hole of the cable stress meter, and the limiting block is used to limit movement of the movable anchor towards the fixed anchor. In this way, the movable anchor moves in the inner surface of the through hole of the cable stress meter and is limited from moving towards the fixed anchor and separating from the cable stress meter under the action of the limiting block.
[0009] Preferably, the cable holes on the fixed anchor and the cable holes on the movable anchor are arranged in one-to-one correspondence. This one-to-one correspondence can enable the cable to accurately pass through the anchor during installation, avoid installation difficulties or installation failure caused by position deviation, facilitate installation, and help the cable to keep correct alignment between the fixed anchor and the movable anchor, thereby enhancing the stability of the entire anchoring system.
[0010] Preferably, the cable hole on the fixed anchor is in the shape of a trapezoid. This facilitates installation and improves the efficiency of cable installation, and the trapezoidal shape can enhance the connection strength between the cable and the anchor, make the stress of the cable more uniform, and improve the stability of the entire anchoring system.
[0011] Preferably, the axis of the displacement sensor, the axis of the fixed anchor and the axis of the movable anchor coincide with each other.
[0012] Preferably, the cable stress meter comprises a pressure-bearing cylinder and a steel cylinder, the steel cylinder is used to fix the pressure-bearing cylinder, the pressure-bearing cylinder is located inside the steel cylinder, the pressure-bearing cylinder is used to monitor the stress of the cable, the limiting groove is arranged on the inner side surface of the pressure-bearing cylinder, and the movable anchor is in sliding connection with the inner side of the pressure-bearing cylinder. The cable acts on the steel cylinder through the fixed anchor, the pressure-bearing cylinder forms a transmission path of the axial load, the pressure-bearing cylinder produces axial deformation under the action of the cable, and the stress of the movable anchor is obtained through the axial deformation of the pressure-bearing cylinder.
[0013] Preferably, the pressure cylinder is provided with a vibrating string hole in the axial direction, the pressure cylinder is provided with an electromagnetic coil slot communicating with the vibrating string hole on the side surface, the vibrating string hole and the electromagnetic coil slot are correspondingly arranged, and the pressure cylinder is provided with a bolt hole connected with the vibrating string hole on the side surface. When the pressure cylinder is axially deformed under the action of the anchor cable, the vibrating string stress changes and the vibration frequency changes, thereby affecting the change of the induced electromotive force of the electromagnetic coil. The force value acting on the anchor cable dynamometer is obtained by measuring the frequency change of the induced electromotive force of the electromagnetic coil.
[0014] Preferably, the bolt holes are symmetrically arranged on the side surface of the pressure cylinder. The symmetrically arranged bolt holes can ensure that the bolts are more uniformly distributed when stressed, reduce local stress concentration, and improve the overall stability and reliability of the connecting structure.
[0015] Preferably, the displacement sensor comprises a shell, a pull rod, a sliding block, a resistance slide rail and a circuit board, the resistance slide rail is arranged on the inner wall of the shell, the resistance slide rail and the circuit board are electrically connected, the circuit board is arranged on the shell, the sliding block is symmetrically arranged in the shell, the sliding block is in sliding connection with the resistance slide rail, and the pull rod is arranged on the sliding block. Under the action of the movable anchor device, the pull rod and the sliding block move in the resistance slide rail, different resistance values are obtained by changing the length of the connected resistance, and then the displacement of the movable anchor device is obtained. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is an exploded schematic view of the structure of the embodiment of the present application.
[0017] Figure 2 It is an exploded structural schematic view of the anchor cable stress meter of the embodiment of the present application.
[0018] Figure 3 It is a structural schematic view of the displacement sensor of the embodiment of the present application.
[0019] Figure 4 It is a sectional view of the displacement sensor of the embodiment of the present application.
[0020] Figure 5 It is a schematic view of the structure of the embodiment of the present application in use. DETAILED DESCRIPTION
[0021] The following will be further described in detail through specific embodiments:
[0022] The reference signs in the drawings of the specification comprise: fixed anchor device 1, anchor cable stress meter 2, steel cylinder 21, pressure cylinder 22, vibrating string hole 221, pressure surface 222, electromagnetic coil slot 223, bidirectional displacement sensor 3, pull rod 31, sliding block 32, spring 33, shell 34, movable anchor device 4.
[0023] Embodiment:
[0024] An anchor cable monitoring device with force and displacement real-time monitoring functions, as shown in the figure, comprising a fixed anchor 1, an anchor cable stress meter 2, a bidirectional displacement sensor 3 and a movable anchor 4. The anchor cable stress meter 2 is provided with a through hole in the axial direction for the anchor cable to pass through. It also includes an anchor pad between the anchor cable stress meter 2 and the structure to be detected, which is used to bear the pre-tightening force from the anchor and uniformly transmit these forces to the concrete or other structures, thereby improving the overall stability and carrying capacity of the structure. Figure 1
[0025] The anchor cable stress meter 2 is connected to the fixed anchor 1 at one end, and the through hole at the other end of the anchor cable stress meter 2 is connected to the movable anchor 4 in a sliding manner. The fixed anchor 1 and the movable anchor 4 are respectively provided with anchor cable holes for the anchor cable to pass through. The anchor cable holes on the fixed anchor 1 and the movable anchor 4 are arranged in a one-to-one correspondence. This one-to-one correspondence can ensure that the anchor cable can pass through the anchor accurately during installation, avoiding installation difficulties or failures caused by position deviation, and facilitating installation; and it helps to keep the anchor cable correctly aligned between the fixed anchor 1 and the movable anchor 4, enhancing the stability of the entire anchoring system.
[0026] The anchor cable hole on the fixed anchor 1 is in the shape of a trapezoid. This facilitates installation and improves the efficiency of anchor cable installation; and the trapezoidal shape can enhance the connection strength between the anchor cable and the anchor, making the anchor cable force more uniform and improving the stability of the entire anchoring system.
[0027] As shown in the figure, the anchor cable stress meter 2 comprises a pressure cylinder 22 and a steel cylinder 21, the steel cylinder 21 is used to fix the pressure cylinder 22, the pressure cylinder 22 is located inside the steel cylinder 21, the pressure cylinder 22 is used to monitor the anchor cable stress, a limiting groove is arranged on the inner side of the pressure cylinder 22, and the movable anchor 4 is connected to the inner side of the pressure cylinder 22 in a sliding manner. Figure 2 The anchor cable acts on the steel cylinder 21 through the fixed anchor 1, the pressure cylinder 22 constitutes a transmission path of the axial load, the pressure cylinder 22 deforms axially under the action of the anchor cable, and the anchor cable stress is obtained through the axial deformation of the pressure cylinder 22.
[0028] The pressure cylinder 22 is provided with a vibrating string hole 221 in the axial direction, and the pressure cylinder 22 is provided with an electromagnetic coil groove 223 communicating with the vibrating string hole 221 on the side surface, and the vibrating string hole 221 and the electromagnetic coil groove 223 are arranged in correspondence. When the pressure cylinder 22 deforms axially under the action of the anchor cable, the vibrating string stress changes and its vibration frequency changes, thereby affecting the change of the induced electromotive force of the electromagnetic coil. By measuring the frequency change of the induced electromotive force in the electromagnetic coil, the force value acting on the anchor cable force meter is obtained. The relative motion principle of the electromagnetic coil and the vibrating string and how to measure the force value according to the change of the two are prior art, and the present application does not improve this part.
[0029] The annular distribution is provided with three longitudinal vibration string holes 221, and the axis of the electromagnetic coil groove 223 is perpendicular to the axis of the vibration string hole 221.
[0030] The side surface of the pressure cylinder 22 is provided with bolt holes connected with the vibration string holes 221, and the vibration string is fixed at the corresponding vibration string hole 221 of the pressure cylinder 22 through the bolt. In the scheme, the bolt holes are symmetrically arranged on the side surface of the pressure cylinder 22. The symmetrically arranged bolt holes can ensure that the bolt is more uniformly distributed when stressed, reduce local stress concentration, and improve the overall stability and reliability of the connection structure.
[0031] The inner side of the pressure cylinder 22 is provided with a limiting groove, the movable anchor 4 is in sliding connection with the limiting groove, one end of the bidirectional displacement sensor 3 is fixedly connected with the movable anchor 4, the other end of the bidirectional displacement sensor 3 is connected with the fixed anchor 1, and the connecting surface of the pressure cylinder 22 and the fixed anchor 1 is a pressure bearing surface.
[0032] The movable anchor 4 and the bidirectional displacement sensor 3 are both located within the through hole range of the anchor cable stress meter 2. When the anchor cable is subjected to the force of the structure to be measured, the axial displacement of the anchor cable directly drives the movable anchor 4 to move synchronously, and the bidirectional displacement sensor 3 monitors the dynamic change quantity, thereby realizing real-time monitoring of the anchor cable slip quantity. When the stress meter enters the failure threshold, the displacement data can immediately start the compensation mechanism, the response speed is improved compared with the traditional single sensing scheme, and the continuous safety evaluation of the structure is ensured. In the scheme, the axis of the displacement sensor, the axis of the fixed anchor 1 and the axis of the movable anchor 4 coincide with each other.
[0033] The limiting groove is an annular limiting groove. The annular limiting groove can keep the stable axial position of the movable anchor 4 during movement, reduce the displacement caused by vibration or movement, and has a simple structure and is convenient and fast to install.
[0034] The limiting groove is formed by a limiting block and the inner surface of the through hole of the anchor cable stress meter 2, and the limiting block is used to limit the movement of the movable anchor 4 towards the fixed anchor 1. In this way, the movable anchor 4 moves within the inner surface of the through hole of the anchor cable stress meter 2 and is limited from moving towards the fixed anchor 1 and separating from the anchor cable stress meter 2 under the action of the limiting block.
[0035] The inner wall of the steel cylinder 21 is provided with a positioning groove matched with the pressure cylinder 22. In this way, during assembly, the corresponding pressure bearing body and the groove are tightly matched through interference press-fitting process, so as to realize high-precision positioning and rigid locking of the core module in the steel cylinder 21, and realize protection of the stressed main body structure by the steel cylinder 21. The connecting position of the pressure cylinder 22 and the positioning groove of the steel cylinder 21 is respectively provided with a sealing ring to ensure the stability of the structure connection. The sealing rings are all rubber sealing rings, which have excellent elasticity and stretchability and are low in cost.
[0036] As shown in FIG. 1, the core module is composed of a pressure cylinder 22, a steel cylinder 21 and an anchor cable stress meter 2. Figure 3 and Figure 4As shown, the displacement sensor comprises a shell 34, a pull rod 31, a slider 32, a resistance slide rail and a circuit board, the resistance slide rail is arranged on the inner wall of the shell 34, the resistance slide rail and the circuit board are electrically connected, the circuit board is arranged on the shell 34, the slider 32 is symmetrically arranged in the shell 34, the slider 32 is slidably connected with the resistance slide rail, the pull rod 31 is arranged on the slider 32, and the pull rod 31 at both ends is connected with the movable anchor device 4 and the fixed anchor device 1 respectively. In the scheme, the linear mechanical displacement is converted into an electrical signal by the bidirectional displacement sensor 3. Specifically, the different resistance values are measured by the displacement of the slider 32 on the resistance slide rail, the resistance slide rail is connected with a steady DC voltage, and a small current is allowed to pass through, the voltage between the slider 32 and the starting end is proportional to the length of the slider 32. In the scheme, when the anchor cable is stressed, the anchor cable moves the movable anchor device 4, under the action of the movable anchor device 4, the pull rod 31 and the slider 32 move on the resistance slide rail, by changing the length of the connected resistance, different resistance values are obtained, and then the displacement of the movable anchor device 4 is obtained.
[0037] Wherein, the shell 34 is cylindrical, the connection of the current plate and the resistance slide rail, and the change of the resistance size by the movement of the slider 32 on the resistance slide rail are prior art, and the application is not improved.
[0038] Further comprising a spring 33, the spring 33 is sleeved on the pull rod 31, and the spring 33 is located between the head of the pull rod 31 and the slider 32. When the slider 32 or the pull rod 31 is subjected to external force, the spring 33 can absorb and relieve these external forces, and provide a reset function and a buffering effect; and the spring 33 enables the sensor to automatically return to the initial position when not in use, ready for the next measurement.
[0039] The specific implementation process is as follows:
[0040] As shown in the figure, Figure 5 The left side is the structure to be detected (rock) and anchor pad. First, the anchor cable is passed through the anchor pad, so that the anchor pad is located on the corresponding structure to be monitored, and then the anchor cable is rigidly fixed with the movable anchor device 4 through the mechanical locking mechanism. Subsequently, the movable anchor device 4 and the bidirectional displacement sensor 3 are installed together, and then the movable anchor device 4 and the bidirectional displacement sensor 3 are pushed into the limiting groove inside the anchor cable stress meter 2 to complete the initial positioning of the anchor device. Then the anchor cable stress meter 2 is fixed on the corresponding structure to be measured by the fixed anchor device 1, and the installation of the anchor cable meter is completed. When the anchor cable is subjected to the force of the structure to be measured, the anchor cable will produce axial displacement, which will directly drive the movable anchor device 4 to produce synchronous movement, and the bidirectional displacement sensor 3 will monitor the dynamic change, so as to realize the real-time monitoring of the anchor cable slip amount. At the same time, when the pressure cylinder 22 produces axial deformation under the action of the anchor cable, the vibration of the vibrating wire stress changes and its vibration frequency changes, thereby affecting the change of the induced electromotive force of the electromagnetic coil. By measuring the frequency change of the induced electromotive force in the electromagnetic coil, the force value acting on the anchor cable stress meter is obtained.
[0041] The basic parameters of the anchor cable stress meter 2 and the bidirectional displacement sensor 3 in the embodiment are shown in Table 1.
[0042] Table 1 Basic parameters of the device
[0043]
[0044]
[0045] In the embodiment, the data measurement method and calculation of the anchor cable stress meter 2 are as follows:
[0046] The calculation formula of the anchor cable meter: connect the vibrating wire type reading instrument with the lead of the facility, and after the frequency displayed is stable, the frequency value is the test value of the frequency this time. Convert the frequency value of the test sensor by the formula, and the calculation formula is as follows:
[0047] P = K (f0 2 -f i 2 )
[0048] In the formula, P is the force value (KN), K is the calibration coefficient of the measured anchor cable meter (KN / Hz 2 ), f i is the average value during measurement (Hz 2 ), and f o is the initial frequency value before measurement (Hz 2 )
[0049] In the embodiment, the measurement method of the bidirectional displacement sensor is as follows: the displacement meter uses an HM digital display, which can directly output the displacement, and the output unit is mm
[0050] The facility is equipped with a special measurement data line, which is the same as the general anchor cable meter. The data line core is black, red, green, and yellow four cores, among which the black is the common line. If a reading instrument is used, two wire clamps (black and red) are connected to the black-red, black-green, and black-yellow of the facility, respectively, corresponding to the data output of three groups of vibrating wires, and the three groups of data (unit F) read FA, FB, and FC are taken as the average value. If an automatic monitoring device is used, the same principle is also applicable, and the average value of the three groups of vibrating wires is taken as the final output data.
[0051] The anchor cable meter system is verified by experiments to be reliable and accurate. The experiments use a hydraulic machine to simulate the actual working environment of the anchor cable meter, and load tests are conducted in the pressure range of 0-400KN. To ensure the integrity and accuracy of the data, the experiment sets a pressure recording point every 50KN, with a total of 9 measurement intervals. The experimental data shows that during the entire pressure change process, the output signal of the measuring device is highly consistent with the standard pressure value applied by the hydraulic machine, with an error of not more than 2%. Even in the high pressure segment (300-400KN) test, the device can still maintain excellent measurement stability, with a maximum relative error of not more than 1%. These experimental data fully prove that the invention has excellent measurement accuracy and environmental adaptability, and can meet the strict requirements of anchor cable force value monitoring in engineering practice. In addition, the repeatability test also verifies that the device has good measurement consistency.
[0052]
[0053] The displacement sensor is used to convert linear mechanical displacement into electrical signal. To achieve this effect, a variable resistance slide rail is usually placed in the fixed part of the potentiometer, and the displacement of the slide piece on the slide rail is used to measure the different resistance values. The potentiometer slide rail is connected to a steady DC voltage, allowing a small current of microamperes to flow through the voltage. The voltage between the slide piece and the starting end is proportional to the length of the slide piece movement. The displacement meter calculation formula is as follows:
[0054]
[0055] Where: l refers to the current (mA)
[0056] V refers to the voltage (V)
[0057] R refers to the resistance (Ω)
[0058] This experiment uses a high-precision test platform to set 6 standard measurement points at intervals of 5mm in the full range of 0-30mm. Through precise measurement, reliable experimental data is obtained. The test results show that the resistance change of the sensor is strictly linearly related to the displacement, with a linearity error of less than 0.1%, a repeatability consistency of better than 0.05%, and a minimum resolvable displacement of 0.01mm.
[0059]
[0060] The scheme adopts synchronous double-channel monitoring, channel one captures the micro-displacement of the internal activity anchor 4 in real time to reflect the anchor cable slip amount, and channel two continuously tracks the change of the external fixed anchor 1 to evaluate the overall stability of the anchoring end, so as to build a complete anchoring system displacement field monitoring system; since the traditional vibrating wire anchor cable stress meter 2 is prone to vibrating wire failure under large deformation conditions, leading to inaccurate stress data, the scheme forms a double-redundancy sensing system by fusing the displacement monitoring module, when the stress meter enters the failure threshold, the displacement data can be compensated, the response speed of the traditional single sensing scheme is improved, and the continuity of the structure safety evaluation is ensured.
[0061] The above is only an embodiment of the present application, and common technical solutions and / or characteristics in the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, in the present application, unless otherwise specified and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances. The protection scope claimed in the present application should be subject to the content of its claims, and the specific embodiments and the like in the specification can be used to explain the content of the claims.
Claims
1. An anchor cable monitoring device having a force and displacement real-time monitoring function, characterized by, The fixed anchor, the anchor cable stress meter, the two-way displacement sensor and the movable anchor are included, the anchor cable stress meter is provided with a through hole in the axial direction, one end of the anchor cable stress meter is connected with the fixed anchor, the through hole of the other end of the anchor cable stress meter is provided with a limiting groove, the movable anchor is connected with the limiting groove in a sliding mode, one end of the two-way displacement sensor is fixedly connected with the movable anchor, the other end of the two-way displacement sensor is connected with the fixed anchor, the movable anchor and the two-way displacement sensor are located within the through hole of the anchor cable stress meter, and the fixed anchor and the movable anchor are respectively provided with anchor cable holes for the anchor cable to pass through.
2. The anchor cable monitoring device with force and displacement real-time monitoring function according to claim 1, characterized in that: The limiting groove is a ring-shaped limiting groove.
3. The anchor cable monitoring device with force and displacement real-time monitoring function according to claim 1, characterized in that: The limiting groove is formed by a limiting block and the inner surface of the through hole of the anchor cable stress meter, and the limiting block is used for limiting the movement of the movable anchor towards the fixed anchor.
4. The anchor cable monitoring device with force and displacement real-time monitoring function according to claim 1, characterized in that: The anchor cable holes on the fixed anchor and the movable anchor are arranged in one-to-one correspondence.
5. The anchor cable monitoring device with force and displacement real-time monitoring function according to claim 1, characterized in that: The anchor cable hole on the fixed anchor is in the shape of a trapezoid.
6. The anchor cable monitoring device with force and displacement real-time monitoring function according to claim 1, characterized in that: The axis of the displacement sensor, the axis of the fixed anchor and the axis of the movable anchor coincide with each other.
7. The anchor cable monitoring device with force and displacement real-time monitoring function according to claim 1, characterized in that: The anchor cable stress meter includes a pressure-bearing cylinder and a steel cylinder, the steel cylinder is used for fixing the pressure-bearing cylinder, the pressure-bearing cylinder is located inside the steel cylinder, the pressure-bearing cylinder is used for monitoring the anchor cable stress, the limiting groove is arranged on the inner side surface of the pressure-bearing cylinder, and the movable anchor is connected with the inner side of the pressure-bearing cylinder in a sliding mode.
8. The anchor cable monitoring device with force and displacement real-time monitoring function according to claim 7, characterized in that: The pressure-bearing cylinder is provided with a vibrating string hole in the axial direction, the pressure-bearing cylinder is provided with an electromagnetic coil groove in communication with the vibrating string hole on the side surface, the vibrating string hole and the electromagnetic coil groove are arranged in correspondence, the pressure-bearing cylinder is provided with a bolt hole connected with the vibrating string hole on the side surface.
9. The anchor cable monitoring device with force and displacement real-time monitoring function according to claim 8, characterized in that: The bolt holes are symmetrically arranged on the side surface of the pressure-bearing cylinder.
10. The anchor cable monitoring device with force and displacement real-time monitoring function according to claim 1, characterized in that: The two-way displacement sensor includes a shell, a pull rod, a sliding block, a resistance slide rail and a circuit board, the resistance slide rail is arranged on the inner wall of the shell, the resistance slide rail and the circuit board are electrically connected, the circuit board is arranged on the shell, the sliding block is symmetrically arranged in the shell, the sliding block is connected with the resistance slide rail in a sliding mode, and the pull rod is arranged on the sliding block.