Dynamic tension detection method for steel wire rope of portal crane

Abstract

A portal crane steel wire rope dynamic tension detection method comprises the steps that firstly, a steel wire rope bypasses a three-pulley assembly of a tension detection device, and the dynamic tension change of the steel wire rope is converted into the tension included angle change of the three-pulley assembly; then, the tension included angle change is converted into line voltage of an electromagnetic conversion assembly through a vibration assembly of the tension detection device; and finally, the line voltage generated by the electromagnetic conversion assembly is measured through a rectification and energy storage circuit, the horizontal displacement of a rotor of the vibration assembly is measured through a displacement sensor, a measured line voltage signal and a measured displacement signal are transmitted to a calculation and data processing module through a wireless transmission module, and the dynamic tension of the steel wire rope is calculated. According to the dynamic tension detection method for the steel wire rope of the portal crane, the tension of the steel wire rope can be detected in real time, and the self-energy-supply requirement of the tension detection device is met.

Description

Technical Field

[0001] The invention relates to the technical field of dynamic tension detection of steel wire ropes, in particular to a method for detecting dynamic tension of steel wire ropes of a gantry crane. Background Art

[0002] Gantry cranes are widely used in ports and large hydropower stations. Their structural stability and operational safety are directly related to industrial production efficiency and the safety of personnel and property. As the key load-bearing component of gantry cranes, wire ropes have multiple functions such as lifting load transfer and dynamic balance adjustment. Real-time monitoring of their mechanical properties (especially tension state) has become a core link to ensure the safe operation of cranes. Therefore, in order to address the problems of fatigue damage and even breakage accidents caused by abnormal tension fluctuations in gantry crane wire ropes, research on high-precision wire rope tension detection technology is carried out. This is not only a key breakthrough point for optimizing equipment maintenance strategies, but also an important foundation for realizing intelligent gantry crane technology. Traditional static detection methods are difficult to accurately capture the instantaneous force changes of wire ropes during operation, and existing dynamic detection technologies are limited by measurement accuracy and external interference, making it difficult to meet the detection needs under complex working conditions. To this end, it is necessary to design a dynamic tension detection method for wire ropes to solve the above problems. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method for detecting the dynamic tension of the wire rope of a gantry crane, which can perform real-time detection of the tension of the wire rope, ensure the stability of the gantry crane and the safe operation of the equipment, and provide key data support for the automated control and management of the equipment, thereby effectively improving operational efficiency, operational safety and equipment reliability, and providing support for the intelligent upgrade of the gantry crane. It is of great significance in industries such as water conservancy, electricity, and logistics and transportation.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A method for detecting dynamic tension of a steel wire rope of a gantry crane, characterized by:

[0006] First, the wire rope passes around the three-pulley assembly of the tension detection device, converting the dynamic tension change of the wire rope into the tension angle change of the three-pulley assembly;

[0007] Then, the change in tension angle is converted into line voltage of the electromagnetic conversion component through the vibration component of the tension detection device;

[0008] Finally, by measuring the line voltage generated by the electromagnetic conversion component, the displacement sensor measures the horizontal displacement of the vibrating component mover, and the wireless transmission module transmits the measured line voltage signal and displacement signal to the calculation and data processing module to calculate the dynamic tension of the wire rope; at the same time, the rectification and energy storage circuit stores the electrical energy generated by the electromagnetic conversion component in the battery after rectification, filtering and voltage stabilization, and the battery powers the tension detection device.

[0009] The tension detection device includes a three-pulley assembly, a vibration assembly and an electromagnetic conversion assembly;

[0010] Among them, the three-pulley assembly includes a support base, and the upper directional pulley, the measuring movable pulley and the lower directional pulley are arranged correspondingly on the upper, middle and lower parts of the support base, wherein the upper directional pulley and the lower directional pulley are installed on the support base through the pulley support base;

[0011] The electromagnetic conversion assembly is a linear generator. One end of its permanent magnet is connected to the measuring pulley via a connecting rod. The other end of the permanent magnet is connected to the vibrating assembly and reciprocates horizontally with it. The coil of the linear generator remains stationary. The purpose and benefit of the electromagnetic conversion assembly are: the permanent magnet of the electromagnetic conversion assembly reciprocates horizontally with the vibrating assembly's mover, cutting through magnetic flux lines to generate an induced electromotive force, which converts the vibration energy into electrical energy. After rectification and processing in a storage circuit, it can be stored and used. According to Faraday's law of electromagnetic induction, the induced electromotive force is proportional to the speed of the vibrating assembly's mover. By measuring this electromotive force, the real-time tension changes in the wire rope can be calculated.

[0012] The vibration component includes a permanent magnet, a spring and a spring support, wherein the permanent magnet is the mover of the vibration component; the spring support is fixed on the support seat, the left end of the spring is connected to the spring support, and the right end is connected to the permanent magnet; the spring support is provided with a guide rod, which passes through the spring and forms a moving pair with the permanent magnet.

[0013] The purpose and benefits of the vibration assembly are: it prevents direct contact between the force measuring element and the wire rope, reducing friction and wear, and enabling long-term testing. Furthermore, the spring deformation responds to the real-time wire rope tension, driving the permanent magnet of the electromagnetic conversion assembly in horizontal reciprocating motion. This cuts through the magnetic flux lines, generating an induced electromotive force, and thus measuring the wire rope tension.

[0014] A displacement sensor is installed on the support seat. The displacement sensor is a laser displacement sensor. The laser displacement sensor is used to measure the horizontal displacement of the mover of the vibration component.

[0015] The shell of the linear generator is fixed on the support base through the linear generator support, and the linear generator support is a hollow cylindrical structure.

[0016] The rectification and energy storage circuit includes a battery, a resistor, a voltmeter, a three-phase rectifier bridge, a filter capacitor, and a voltage-stabilizing diode; the permanent magnet of the linear generator performs horizontal reciprocating motion, cutting the magnetic lines of flux to generate an induced electromotive force; the voltmeter in the rectification and energy storage circuit measures the line voltage generated by the linear generator, and the displacement sensor measures the horizontal displacement of the vibrating component mover. The measured line voltage signal and displacement signal are transmitted to the calculation and data processing module via a wireless transmission module, and the dynamic tension of the wire rope is calculated using a mathematical relationship expression; at the same time, the electric energy generated by the linear generator is processed by the three-phase rectifier bridge, filter capacitor, and voltage-stabilizing diode in the rectification and energy storage circuit, and the unstable electric energy is converted into stable electric energy to charge the battery, and the electric energy in the battery is used to power the tension detection device.

[0017] The purpose and benefit of the rectifier and energy storage circuit are: it measures the voltage generated by the electromagnetic converter assembly. By measuring this voltage and the displacement of the vibrating assembly's mover, the real-time tension of the wire rope can be calculated. Furthermore, the electrical energy generated by the electromagnetic converter assembly is stored to power the tension detection device, achieving self-sufficiency for the entire device.

[0018] When the gantry crane is operating, the wire rope transfers the tension energy to the measuring movable pulley. Under the action of the change in the wire rope tension angle and the spring, the permanent magnet reciprocates horizontally along the spring support, transferring the energy to the electromagnetic conversion component, cutting the magnetic flux lines generated by the permanent magnet and the coil to generate an induced electromotive force. Under the action of the rectification and energy storage circuit, the unstable electrical energy is processed and stored in the battery. At the same time, the wireless transmission module transmits the linear generator line voltage measured by the voltmeter and the horizontal displacement signal of the vibration component mover measured by the displacement sensor to the signal receiving end through the voltage and displacement signal transmitting end. The calculation and data processing module calculates the dynamic tension of the wire rope according to the calculation formula.

[0019] The support base is a square tube structure, the support base is connected to the gantry crane, and the entire detection device is installed on the gantry crane.

[0020] The movable pulley is measured to have the same size as the upper directional pulley and the lower directional pulley.

[0021] The tension calculation process of the calculation and data processing module includes the following steps:

[0022] Step S1: The equation for the change in tension angle with respect to the displacement of the vibrating component mover is:

[0023]

[0024] Where α(x) is the function of the tension angle with respect to the displacement of the vibrating assembly mover, H is the distance between the upper directional pulley and the measuring movable pulley, R1 is the radius of the measuring movable pulley, R2 is the radius of the upper directional pulley, L1 is the horizontal distance from the center of the measuring movable pulley to the origin, and x is the horizontal displacement of the vibrating assembly mover;

[0025] Step S2: Dynamic tension collection The dynamic equation of the vibration system energy collection device is:

[0026]

[0027] Where M is the mass of the moving parts of the vibration assembly, c is the spring damping, k is the spring stiffness, T is the wire rope tension, α is the tension angle, x is the displacement of the vibration assembly mover measured by the displacement sensor, and x is the speed of the vibration assembly mover. is the acceleration of the vibrating component mover;

[0028] Step S3: The relationship between tension and voltage is:

[0029]

[0030] Where T is the wire rope tension, V is the linear generator line voltage, is the instantaneous rate of change of the linear generator line voltage, K e is the electromagnetic conversion coefficient, K e =NBA, N is the number of turns of the induction coil, B is the magnetic field strength, and A is the effective area of the coil;

[0031] Step S4: Steps S1 to S3 can calculate the wire rope tension angle based on the vibration component mover displacement measured by the displacement sensor, and calculate the wire rope dynamic tension based on the generator line voltage measured by the voltmeter.

[0032] Benefits of the tension calculation process: As can be seen from the tension calculation process, using this method to calculate the dynamic tension of a wire rope requires measuring the line voltage of the linear generator and the horizontal displacement of the vibrating assembly's rotor. Measuring line voltage and horizontal displacement is simpler than measuring other signals such as angle, acceleration, velocity, and pressure, effectively improving measurement accuracy. Furthermore, voltage changes can reflect changes in wire rope tension in real time.

[0033] The present invention provides a method for detecting the dynamic tension of a gantry crane wire rope, which has the following technical effects:

[0034] 1) The three-pulley assembly of the detection device converts the dynamic tension change of the wire rope during the operation of the gantry crane into the tension angle change of the three-pulley assembly, and indirectly detects the dynamic tension of the wire rope through the tension angle change.

[0035] 2) The vibration component converts the change in the wire rope tension angle into the horizontal displacement of the mover. The horizontal movement of the mover cuts the magnetic flux lines to generate an induced electromotive force. The dynamic tension of the wire rope is calculated by measuring the line voltage generated by the electromagnetic conversion component and the horizontal displacement of the vibration component mover.

[0036] 3) The rectifier and energy storage circuit stores the electric energy generated by the electromagnetic conversion component into the battery after rectification, filtering and voltage stabilization. The battery supplies power to the wire rope tension detection device, thereby realizing the self-power supply requirement of the gantry crane wire rope dynamic tension detection device.

[0037] 4) CN202322651557 - A crane load measuring device and a crane boom head (Comparative Document 1), which can also realize dynamic detection of wire rope tension. The method of measuring tension in Comparative Document 1 is to measure the wire rope pressure on the auxiliary pulley 13 and the bending angle of the wire rope to calculate the tension. The measurement method described in Comparative Document 1 belongs to the strain measurement method, which may cause fatigue and reduced measurement accuracy after long-term use. It also has disadvantages such as difficulty in replacement and maintenance. It also needs to measure the bending angle of the wire rope, and requires additional installation of sensors. The present application provides a method for calculating the bending angle of the wire rope by measuring the displacement of the movable pulley, which does not require an additional angle measurement sensor. At the same time, the present application can recover the vibration energy of the vibration component during the measurement process to achieve self-powered long-term online detection.

[0038] 5) CN202310824089-Wire rope monitoring device and crane and crane operation monitoring method (Comparative Document 2) can realize real-time monitoring of wire rope diameter and tension. The tension measurement method of Comparative Document 2 is a traditional pressure-transformer tension measurement method. Its disadvantage is that the sensor may become fatigued after long-term use, affecting the measurement accuracy. At the same time, it is easily affected by temperature changes and electromagnetic interference and affects the signal stability, and calibration is required to ensure the accuracy of the measurement. Compared with the pressure-transformer sensor, the present application does not have fatigue problems. When the external conditions change, the present device can still operate normally and accurately measure the real-time tension changes of the wire rope. At the same time, the present application can recover the vibration energy of the vibration component during the measurement process to achieve self-powered long-term online detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further described below with reference to the accompanying drawings and examples:

[0040] Figure 1 Schematic diagram of the steel wire rope dynamic tension detection device of the present invention.

[0041] Figure 2 Schematic diagram of the vibration energy harvesting system of the present invention.

[0042] Figure 3 This is a composition diagram of the steel wire rope dynamic tension detection system of the present invention.

[0043] Figure 4 This is a diagram of the electromagnetic conversion component and its rectification and energy storage circuit of the present invention.

[0044] Figure 5 This is a schematic diagram of the multi-physical field coupling of the wire rope tension detection process designed according to the working principle of the present invention.

[0045] Figure 6 Schematic diagram of real-time wireless signal transmission of voltage and displacement in the present invention.

[0046] In the figure: wire rope 1, pulley support base 2, upper directional pulley 3, support base 4, linear generator support 5, coil 6, permanent magnet 7, connecting rod 8, measuring movable pulley 9, lower directional pulley 10, spring 11, spring support 12, battery 13, resistor 14, voltmeter 15, wireless transmission module 16, linear generator 17, three-phase rectifier bridge 18, filter capacitor 19, voltage regulator diode 20, displacement sensor 21. DETAILED DESCRIPTION

[0047] like Figures 1 to 3 As shown, a gantry crane wire rope dynamic tension detection device includes a support base 4 mounted on the gantry crane. An upper directional pulley 3, a movable measuring pulley 9, and a lower directional pulley 10 are arranged on the upper, middle, and lower portions of the support base 4, respectively. The upper directional pulley 3 and the lower directional pulley 10 are mounted on the support base 4 via a pulley support base 2. The movable measuring pulley 9 and the pulley support base 2 are connected to the right end of the permanent magnet 7 of the electromagnetic conversion assembly via a connecting rod 8. The left end of the permanent magnet 7 is connected to the right end of a spring 11, which in turn is connected to a spring support 12 fixed to the support base 4. The spring support 12 is provided with a guide rod that passes through the spring 11 and forms a movable range with the permanent magnet 7. The spring 11 and the permanent magnet 7 can reciprocate horizontally along the spring support 12.

[0048] The gantry crane's wire rope 1 passes over an upper fixed pulley 3, a movable measuring pulley 9, and a lower fixed pulley 10. The upper and lower fixed pulleys 3 and 10 primarily guide the wire rope 1. When the wire rope 1 is tensioned or relaxed, the movable measuring pulley 9, permanent magnet 7, and other components, driven by a spring 11, undergo horizontal reciprocating motion along a guide rod on a spring support 12.

[0049] The nominal diameter of the steel wire rope 1 is 26 mm.

[0050] The spring 11 has a stiffness of 71.98 N / mm and a damping of 107 N·s / m.

[0051] The support base 4 is a square tube structure, which is connected to the gantry crane, and the entire tension detection device is installed on the gantry crane.

[0052] In addition, a displacement sensor 21 is installed on the support base 4. The displacement sensor 21 is a laser displacement sensor. The laser displacement sensor is used to measure the horizontal displacement of the mover of the vibration assembly.

[0053] like Figure 3 As shown, the permanent magnet 7 is a ring-shaped structure with a coil 6 disposed outside. The coil 6 and the permanent magnet 7 are components of the linear generator 17. The permanent magnet 7 serves as the mover of the linear generator 17 to cut the magnetic flux lines and generate an induced electromotive force.

[0054] The linear generator 17 is connected to the linear generator support 5, which is mounted on the support base 4. The linear generator support 5 is a hollow cylindrical structure that fixes the housing of the linear generator 17.

[0055] A rectifier and energy storage circuit is arranged outside the linear generator 17 , and the rectifier and energy storage circuit includes a battery 13 , a resistor 14 , a voltmeter 15 , a three-phase rectifier bridge 18 , a filter capacitor 19 , and a voltage regulator diode 20 .

[0056] The linear generator 17 generates three-phase alternating current (AC) due to the horizontal reciprocating motion of the permanent magnet 7. A voltmeter 15 in the rectifier and energy storage circuit measures the line voltage generated by the linear generator 17. The wireless transmission module 16 transmits the line voltage generated by the linear generator 17 to the calculation and data processing module. After processing by the three-phase rectifier bridge 18, filter capacitor 19, and zener diode 20 in the rectifier and energy storage circuit, the unstable electrical energy is converted into stable energy, which charges the battery 13. The energy in the battery 13 powers the tension detection device.

[0057] like Figure 5 Figure 2 shows a multi-physics coupling diagram of the wire rope tension detection process, designed based on the operating principle of a gantry crane wire rope dynamic tension detection device. During gantry crane operation, wire rope 1 transmits tension energy to the measuring movable pulley 9. Under the influence of the changing tension angle of wire rope 1 and spring 11, permanent magnet 7 reciprocates horizontally along spring support 12, transmitting vibration energy to the electromagnetic conversion assembly. The vibrating assembly mover cuts the magnetic flux lines generated by coil 6 and permanent magnet 7, generating an induced electromotive force. After rectification and processing by the energy storage circuit, the generated induced electromotive force is converted from unstable electrical energy into stable electrical energy and stored in battery 13. Simultaneously, wireless transmission module 16 transmits the line voltage signal measured by voltmeter 15 and the horizontal displacement signal of the vibrating assembly mover measured by displacement sensor 21 to the signal receiving terminal. The calculation module then calculates the dynamic tension of wire rope 1 according to a formula.

[0058] like Figure 6As shown, the three-phase AC power generated by the linear generator 17 is rectified and processed by the energy storage circuit to charge the battery 13, which in turn powers the tension detection device. The wireless transmission module 16 transmits the line voltage signal and the horizontal displacement signal of the mover to the signal receiving terminal. The calculation and data processing module calculates the dynamic tension of the wire rope.

[0059] In a method for detecting dynamic tension of a steel wire rope of a gantry crane, the tension calculation process of a calculation and data processing module includes the following steps:

[0060] Step S1: The equation for the change in tension angle with respect to the displacement of the vibrating component mover is:

[0061]

[0062] Wherein, α(x) is the function of the tension angle with respect to the displacement of the vibration assembly mover, H is the distance between the upper directional pulley 3 and the measuring movable pulley 9, R1 is the radius of the measuring movable pulley 9, R2 is the radius of the upper directional pulley 3, L1 is the horizontal distance from the center of the measuring movable pulley 9 to the origin, and x is the displacement of the vibration assembly mover measured by the displacement sensor 21;

[0063] S2: The dynamic equation of the energy harvesting device of the dynamic tension harvesting vibration system is:

[0064]

[0065] Where M is the mass of the moving parts of the vibration assembly, c is the spring damping, k is the spring stiffness, T is the wire rope tension, α is the tension angle, and x is the displacement of the vibrating assembly mover. is the velocity of the vibration component mover, and x is the acceleration of the vibration component mover.

[0066] S3: The relationship between tension and voltage is:

[0067]

[0068] Where T is the wire rope tension, V is the linear generator line voltage, is the instantaneous rate of change of the linear generator line voltage, K e is the electromagnetic conversion coefficient, K e =NBA, N is the number of turns of the induction coil, B is the magnetic field strength, and A is the effective area of the coil.

[0069] S4: S1 to S3 can calculate the wire rope tension angle based on the horizontal displacement of the vibrating assembly mover measured by the displacement sensor 21, and calculate the dynamic tension of the wire rope based on the generator line voltage measured by the voltmeter 15.

Claims

1. A method for detecting dynamic tension of a gantry crane wire rope, characterized by: First, the wire rope passes around the three-pulley assembly of the tension detection device, converting the dynamic tension change of the wire rope into the tension angle change of the three-pulley assembly; Then, the change in tension angle is converted into line voltage of the electromagnetic conversion component through the vibration component of the tension detection device; Finally, by measuring the line voltage generated by the electromagnetic conversion component, the displacement sensor measures the horizontal displacement of the vibrating component mover, and the wireless transmission module transmits the measured line voltage signal and displacement signal to the calculation and data processing module to calculate the dynamic tension of the wire rope; at the same time, the rectification and energy storage circuit stores the electrical energy generated by the electromagnetic conversion component in the battery after rectification, filtering and voltage stabilization, and the battery powers the tension detection device.

2. A method for detecting dynamic tension of a gantry crane wire rope according to claim 1, characterized in that: The tension detection device includes a three-pulley assembly, a vibration assembly and an electromagnetic conversion assembly; The three-pulley assembly includes a support seat (4), and an upper directional pulley (3), a measuring movable pulley (9) and a lower directional pulley (10) are arranged on the upper, middle and lower parts of the support seat (4) respectively, wherein the upper directional pulley (3) and the lower directional pulley (10) are installed on the support seat (4) through the pulley support seat (2); The electromagnetic conversion component is a linear generator (17). One end of the permanent magnet (7) of the linear generator (17) is connected to the measuring movable pulley (9) through a connecting rod (8), and the other end of the permanent magnet (7) is connected to the vibration component and reciprocates horizontally with the vibration component; the coil (6) of the linear generator (17) remains stationary.

3. A method for detecting dynamic tension of a gantry crane wire rope according to claim 2, characterized in that: The vibration component comprises a permanent magnet (7), a spring (11) and a spring support (12), wherein the permanent magnet (7) is a mover of the vibration component; the spring support (12) is fixed on a support seat (4); the left end of the spring (11) is connected to the spring support (12), and the right end is connected to the permanent magnet (7); the spring support (12) is provided with a guide rod, which passes through the spring (11) and forms a moving pair with the permanent magnet (7).

4. A method for detecting dynamic tension of a gantry crane wire rope according to claim 3, characterized in that: A displacement sensor (21) is mounted on the support seat (4), and the displacement sensor (21) is a laser displacement sensor used to measure the horizontal displacement of the vibrating component mover.

5. A method for detecting dynamic tension of a gantry crane wire rope according to claim 4, characterized in that: The shell of the linear generator (17) is fixed on the support base (4) via a linear generator support (5), and the linear generator support (5) is a hollow cylindrical structure.

6. A method for detecting dynamic tension of a gantry crane wire rope according to claim 5, characterized in that: The rectification and energy storage circuit comprises a battery (13), a resistor (14), a voltmeter (15), a three-phase rectifier bridge (18), a filter capacitor (19), and a voltage-stabilizing diode (20); the permanent magnet (7) of the linear generator (17) performs horizontal reciprocating motion, cutting the magnetic flux lines to generate an induced electromotive force; the voltmeter (15) in the rectification and energy storage circuit measures the line voltage generated by the linear generator (17), the displacement sensor (21) measures the horizontal displacement of the vibrating component mover, and the measured line voltage signal and displacement signal are transmitted to the calculation and data processing module through the wireless transmission module (16), and the dynamic tension of the wire rope is calculated through a mathematical relationship expression; at the same time, the electric energy generated by the linear generator (17) is processed by the three-phase rectifier bridge (18), the filter capacitor (19), and the voltage-stabilizing diode (20) in the rectification and energy storage circuit, and the unstable electric energy is converted into stable electric energy to charge the battery (13), and the electric energy in the battery (13) is used to power the tension detection device.

7. A method for detecting dynamic tension of a gantry crane wire rope according to claim 6, characterized in that: When the gantry crane is operating, the steel wire rope (1) transmits tension energy to the measuring movable pulley (9), and the permanent magnet (7) performs horizontal reciprocating motion along the spring support (12) under the action of the change in the tension angle of the steel wire rope (1) and the spring (11), transmits energy to the electromagnetic conversion component, cuts the magnetic flux lines generated by the permanent magnet (7) and the coil (6) to generate an induced electromotive force, and stores the unstable electric energy in the battery (13) after processing under the action of the rectification and energy storage circuit. At the same time, the wireless transmission module (16) transmits the line voltage of the linear generator (17) measured by the voltmeter (15) and the horizontal displacement signal of the vibration component mover measured by the displacement sensor (21) to the signal receiving end through the voltage and displacement signal transmitting end, and the calculation and data processing module calculates the dynamic tension of the steel wire rope (1) according to the calculation formula.

8. A method for detecting dynamic tension of a gantry crane wire rope according to claim 7, characterized in that: The support seat (4) is a square tube structure, and the support seat (4) is connected to the gantry crane, and the entire detection device is installed on the gantry crane.

9. A method for detecting dynamic tension of a gantry crane wire rope according to claim 8, characterized in that: The measuring movable pulley (9) has the same size as the upper directional pulley (3) and the lower directional pulley (10).

10. A method for detecting dynamic tension of a steel wire rope of a gantry crane according to claim 9, wherein the tension calculation process of the calculation and data processing module comprises the following steps: Step S1: The equation for the change in tension angle with respect to the displacement of the vibrating component mover is: Wherein, α(x) is the function of the tension angle with respect to the displacement of the vibrating assembly mover, H is the distance between the upper directional pulley (3) and the measuring movable pulley (9), R1 is the radius of the measuring movable pulley (9), R2 is the radius of the upper directional pulley (3), L1 is the horizontal distance from the center of the measuring movable pulley (9) to the origin, and x is the horizontal displacement of the vibrating assembly mover; Step S2: Dynamic tension collection The dynamic equation of the vibration system energy collection device is: Where M is the mass of the moving parts of the vibration assembly, c is the spring damping, k is the spring stiffness, T is the wire rope tension, α is the tension angle, and x is the displacement of the vibration assembly mover measured by the displacement sensor (21). is the vibrating component mover speed, is the acceleration of the vibrating component mover; Step S3: The relationship between tension and voltage is: Where T is the wire rope tension, V is the linear generator line voltage, is the instantaneous rate of change of the linear generator line voltage, K e is the electromagnetic conversion coefficient, K e =NBA, N is the number of turns of the induction coil, B is the magnetic field strength, and A is the effective area of the coil; Step S4: Steps S1 to S3 can calculate the wire rope tension angle based on the vibration component mover displacement measured by the displacement sensor (21), and the generator line voltage measured by the voltmeter (15) to calculate the wire rope dynamic tension.

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