CN216249751U - Inhaul cable vibration reduction test model device - Google Patents

Abstract

The utility model relates to a inhaul cable vibration reduction test model device, which is applied to the field of bridge vibration reduction devices and comprises an actuating strut, a fixed strut, an inhaul cable, a balancing weight, an actuator and a vibration exciter, wherein the inhaul cable is tensioned through the actuating strut and the fixed strut; the device can be applicable to multiple vibration environment, and the accuracy is exerted the force and is carried out the stretch-draw to the cable, adjusts the tension of cable initiatively, changes the rigidity and the damping of cable, realizes initiatively adjusting and controlling the cable damping.

Description

Inhaul cable vibration reduction test model device

Technical Field

The utility model relates to the technical field of bridge vibration reduction devices, in particular to a inhaul cable vibration reduction test model device.

Background

The stay cable is a main stressed component of the cable-stayed bridge, and has the characteristics of light weight, small damping, low frequency and the like, so that the stay cable is easy to vibrate greatly under the action of external environmental factors such as wind, rain and the like, the service life of the stay cable is seriously influenced, the operation safety of the cable-stayed bridge is threatened, and social panic is caused. The existing control test method for inhaul cable vibration attenuation is mainly characterized in that a lateral damper is arranged on an inhaul cable, the vibration attenuation of the inhaul cable is realized by changing vibration parameters of an inhaul cable system, one end of the damper is fixed on a main bridge or the ground, the other end of the damper is fixed on one side of the inhaul cable and forms a certain angle with the inhaul cable, and when the inhaul cable vibrates, the damper plays a role, and the damping and the rigidity of the inhaul cable system are increased to realize the vibration attenuation control of the inhaul cable. The existing damper can not realize accurate vibration reduction of the stay cable according to the vibration state of the stay cable, when external environment excitation is large, the vibration amplitude of the stay cable can be obviously increased and exceeds the controllable range of the damper, the damper can obviously reduce or even lose efficacy on the vibration control effect of the stay cable, when the external environment excitation is small, the damper obtains a good vibration reduction effect, but causes resource waste, and can not exert strong damping performance.

The existing inhaul cable vibration damper has the following problems:

1. the mode of arranging the damper on the lateral side of the inhaul cable can not actively adjust and control the damping and energy provided by the inhaul cable according to the environment and the vibration state of the inhaul cable.

2. The damper adjustment control capability has an upper limit, and the control effect on the inhaul cable vibration beyond the damping and energy range is generally even ineffective.

3. The vibration state of the cable system cannot be monitored and collected in real time, and data analysis and calculation are carried out.

4. The actual conditions of engineering cannot be simulated, wireless transmission control can be carried out on the guy cable system, and the influence of time delay existing in data wireless transmission on the vibration reduction effect cannot be researched.

5. After the collector with the inhaul cable vibration response is installed and positioned, the spatial position cannot be adjusted and accurately installed and positioned according to the test requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the problem that active adjustment control cannot be carried out according to the vibration environment and the vibration state of the inhaul cable in the prior art is solved, the inhaul cable vibration attenuation test model device is provided, and the inhaul cable vibration attenuation test model device can be suitable for various vibration environments, accurately exerts force on the inhaul cable to stretch, actively adjusts the tension of the inhaul cable, changes the rigidity and the damping of the inhaul cable, and achieves active adjustment and control of inhaul cable vibration attenuation.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a cable damping test model device, it is including the branch of actuating and the fixed branch that mutual interval set up, and the cable, the balancing weight, actuator and vibration exciter, the first section stretch-draw of cable is actuating between branch and the fixed branch, the vibration exciter is connected to the first section of cable, in order to export excitation signal to the cable, provide different vibration environment, and the one end of cable is fixed to actuating branch, it is rotatable for ground to actuate branch, it supports through the output pole of actuator to actuate branch, in order to with the cable tensioning, the second section and the fixed branch swing joint of cable, the other end and the balancing weight of cable are connected, and the balancing weight hangs perpendicularly by fixed branch.

The existing vibration damping device can not actively adjust vibration, the device outputs and excites the inhaul cable through a vibration exciter, simple resonance, pulse or other forms of external excitation are carried out as required, or random output signals are excited, the device is suitable for various vibration conditions, the inhaul cable is tensioned through actuating the supporting rod and the balancing weight, certain tensile stress is kept on the inhaul cable, the device is closer to an engineering actual state, supporting force is applied to the actuating supporting rod through an actuator, the supporting force can be accurately adjusted through the actuator, the accurate force output of the actuator is realized, based on a lever principle, the supporting rod is always kept to apply tension to the inhaul cable, the rigidity and the damping of the inhaul cable are changed, and the active vibration damping adjustment and control of the inhaul cable are realized.

In a preferred embodiment of the present invention, the above device further comprises a laser displacement meter, a reflection plate and a displacement meter support, the reflection plate is fixed on the first section of the cable, the reflection plate is located in the laser output direction of the laser displacement meter, the laser displacement meter is fixed on the displacement meter support, and the laser displacement meter can adjust the relative position on the displacement meter support; the displacement state is fed back in real time through the reflecting plate, and the movement displacement state data of the stay cable is collected in real time through the laser displacement meter, so that the vibration state of the stay cable is reflected; the height can be adjusted by the laser displacement meter to adapt to the position of the reflecting plate.

In a preferred embodiment of the utility model, the displacement meter support comprises a support base, a foundation column, a telescopic rod, a fastener, a height adjusting block, a fixed plate and a horizontal strut, wherein the bottom end of the foundation column is fixed with the support base, the telescopic rod is connected with a foundation column shaft sleeve, the height adjusting block is connected with the telescopic rod, the height adjusting block can slidably adjust the height relative to the support base through the telescopic rod, the connecting part of the foundation column and the telescopic rod, and the connecting part of the height adjusting block and the telescopic rod are respectively provided with the fastener, the two ends of the horizontal strut are respectively connected with the height adjusting block and the fixed plate, and the laser displacement meter is fixed on the fixed plate; through the displacement meter support, can adjust the horizontal position for the cable, also can adjust the vertical height of laser displacement meter for ground, conveniently fix a position the laser displacement meter, according to the experimental needs of multimode, acquire the data acquisition of laser displacement meter to all positions of cable to satisfy the experimental needs of cable damping multimode.

In a preferred embodiment of the present invention, the device further comprises a tension sensor and a pressure sensor, one end of the cable is connected to the actuating strut through the tension sensor, and the pressure sensor is disposed between the output rod of the actuator and the actuating strut; through the pulling force of force sensor feedback actuation branch to the cable, through the pressure of pressure sensor feedback actuator to actuating branch, can gather the pulling force situation on the cable and the applied force state of actuator output end in real time to data collection carries out the analysis, adjusts and controls as the size that exerts the force to the actuator according to.

In a preferred embodiment of the present invention, the device further comprises an actuator support, the actuator support comprises an adjustable support, an adjusting plate and a support plate, a vertical slide is provided on a side surface of the adjustable support, the adjusting plate is clamped into the slide and is slidable relative to the slide, the adjusting plate is locked and fixed to the adjustable support through a locking member, the support plate is connected to the adjusting plate, and the support plate is used for mounting the actuator; fix the actuator and support for the actuator through the actuator support, and slide about carrying out the actuator through adjustable support, adjust the position of actuator, can adjust the position of the effort of actuator to a certain extent, thereby realize actuating the tensile regulation of pole to the cable, on the one hand can adjust the suitable position with the actuator, actuator output power position can be adjusted at any time, provide stable output control power, make experimental model nimble more changeable, on the other hand can adjust the power of exerting force to the actuator in great scope, when damping and energy are great, the increase is to the pulling force of cable, in order to reduce vibration, maintain better damping effect.

In a preferred embodiment of the present invention, the actuator support further comprises a limiting component, the limiting component is mounted on the support plate and clamps two sides of the actuator; through spacing subassembly with the actuator card on the bedplate, can restrict actuator operating position, avoid the actuator to take place the position deviation.

In a preferred embodiment of the present invention, the device further comprises a hinged support, a fixed support and a fixing member, wherein the actuating strut is hinged to the hinged support, the fixed strut is fixed to the fixed support, and the hinged support and the fixed support are respectively fixed to the ground through the fixing member; the position of the actuating strut is fixed through the hinged support, the actuating strut is hinged with the hinged support, the rotating of the actuating strut is achieved, the tension is convenient to adjust, the fixed strut is fixed through the fixed support, the actuating strut and the fixed strut are fixed respectively, an interval test model foundation is formed, and a pull rope is convenient to set up and test; the hinged support and the fixed support are fixed on the ground through the fixing piece, so that the stability and the strength of connection of the hinged support and the fixed support are enhanced, and unstable connection of the fixed support rod and the actuating support rod caused by vibration is avoided.

In a preferred embodiment of the present invention, the device further comprises a first power source and a second power source, wherein the first power source is electrically connected to the actuator, and the second power source is electrically connected to the vibration exciter; the first power supply and the second power supply provide voltage for the actuator and the vibration exciter.

In a preferred embodiment of the utility model, the device further comprises a movable adjustable base, the movable adjustable base is arranged below the first section of the inhaul cable, and the movable adjustable base is used for placing a vibration exciter; support is provided for the vibration exciter through the movable adjustable base, and the movable adjustable base is convenient to move.

In a preferred embodiment of the present invention, the apparatus further comprises a controller, and the tension sensor, the pressure sensor and the laser displacement meter are respectively connected to the controller in a wired or wireless manner; the controller collects sensing signals of the tension sensor, the pressure sensor and the laser displacement meter so as to analyze optimal active control force, so that the force applied by the actuator is adjusted, the tension of the actuating strut on the inhaul cable is adjusted to an optimal state, the vibration displacement is reduced, and the aim of absorbing the vibration of the inhaul cable is fulfilled finally; aiming at the time lag existing in the wireless data transmission in the device, a time lag compensation parameter can be set in the controller to compensate the time lag, and the influence of the time lag on the control effect is reduced.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. the test model device can monitor and collect the motion state of the inhaul cable system in real time, the magnitude of the control force output by the actuator can be actively adjusted and controlled according to the displacement data fed back by the vibration state of the inhaul cable, the rigidity and the damping of the inhaul cable are changed, accurate control is achieved, and energy is saved.

2. The relative position of the actuator and the inhaul cable is adjusted and optimized, so that the output force position of the actuator can be adjusted at any time, stable output control force is provided, and the test model is more flexible and variable; when the damping and the energy are larger, a better vibration reduction effect can be maintained.

3. The vibration exciter and the actuator can be used for outputting through the controller, the form of external excitation under various working conditions is simulated, the external action on the inhaul cable system is closer to the actual engineering, the requirements of various test working conditions are met, and the test result and the conclusion are more accurate.

4. The device can perform test simulation in a wired mode and a wireless mode, response is fast in the wired mode, the test is convenient in the wireless mode, and the influence of time lag generated by data wireless transmission on the vibration reduction effect in engineering practice can be researched through timely data transmission and feedback.

Drawings

Fig. 1 is a schematic view of a cable vibration damping test model device according to embodiment 1 of the present invention;

FIG. 2 is a schematic front view of an adjustable mount according to embodiment 1 of the present invention;

FIG. 3 is a schematic side view of an adjustable support according to embodiment 1 of the present invention;

FIG. 4 is a front view of a displacement meter holder of embodiment 1 of the present invention with a fixing plate removed;

FIG. 5 is a schematic side view of a displacement meter holder according to embodiment 1 of the present invention;

fig. 6 is a schematic view of a cable vibration damping test model device according to embodiment 2 of the present invention.

The labels in the figure are: 1-hinged support, 2-fixed part, 3-actuating strut, 4-actuator support, 4.1-adjustable support, 4.2-adjusting plate, 4.3-support plate, 5-actuator, 5.1-output rod, 6-limiting component, 7-pressure sensor, 8-pulling cable, 9-pulling force sensor, 10-reflecting plate, 11-laser displacement meter, 12-displacement meter support, 12.1-support base, 12.2-base column, 12.3-telescopic rod, 12.4-fastener, 12.5-height adjusting block, 12.6-fixing plate, 12.7-horizontal strut, 13-vibration exciter, 14-movable adjustable base, 15-counter weight block, 16-fixing strut, 17-fixing support, 18-first power supply, 19-second power supply, 20-a controller, 21-a first radio transmission base station, 22-a second radio transmission base station, 23-a third radio transmission base station, 24-a fourth radio transmission base station.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Example 1

Referring to fig. 1, the present embodiment provides a cable vibration damping test model device, which includes a hinge support 1, a fixing member 2, an actuating strut 3, an actuator support 4, an actuator 5, an output rod 5.1, a limiting assembly 6, a pressure sensor 7, a cable 8, a tension sensor 9, a reflective plate 10, a laser displacement meter 11, a vibration exciter 13, a movable adjustable base 14, a counterweight 15, a fixed strut 16, a fixed support 17, a first power supply 18, a second power supply 19, and a controller 20, wherein the cable 8 is erected between the actuating strut 3 and the fixed strut 16, the actuator 5 applies an acting force to the fixed strut 16, the vibration exciter 13 outputs vibration to the cable 8, displacement data of the reflective plate 10 is collected by the laser displacement meter 11, tensile stress data of the cable 8 is collected by the tension sensor 9, pressure data of the actuator 5 is collected by the pressure sensor 7, and the collected data is transmitted to the controller 20, the optimal output value is fed back to the actuator 5 through the controller 20, the actuator 5 receives a voltage signal, the output rod 5.1 makes a corresponding reaction, the axial output force is provided for the actuating support rod 3, the actuating support rod 3 acts on the inhaul cable 8, the vibration parameter of the inhaul cable 8 is changed, the displacement generated by the vibration of the inhaul cable is reduced, the displacement data of the inhaul cable 8 is collected through the laser displacement meter 11 and fed back to the controller 20, the voltage signal is output through the controller 20, the actuator 5 makes the reaction of the output force again, and finally the purpose of damping the inhaul cable 8 is achieved.

In the embodiment, the hinged support 1 and the fixed support 17 are respectively in a plate shape, the hinged support 1, the fixed support 17, the actuating strut 3 and the fixed strut 16 are all made of steel, the fixing piece 2 is made of an expansion screw, the hinged support 1 and the fixed support 17 are respectively provided with a plurality of mounting holes for fixing, the hinged support 1 and the fixed support 17 are respectively fixed on the ground by driving the expansion screw into the mounting holes, and the hinged support 1 and the fixed support 17 are mutually spaced by a certain distance, so that the stability and the strength of the connection of the hinged support 1 and the fixed support 17 are enhanced, and the unstable connection of the fixed strut 16 and the actuating strut 3 caused by vibration is avoided; fixed branch 16 and fixed bearing 17 are integrated into one piece's structure, and the bottom that actuates branch 3 is hinged joint between 1 with the hinged-support, and it is rotatable for hinged-support 1 and ground through the hinge to actuate branch 3, realizes actuating the rotation of branch 3, conveniently adjusts the pulling force to cable 8, has fixed respectively like this actuating branch 3 and fixed branch 16, forms spaced test model basis, conveniently sets up cable 8 and tests.

Referring to fig. 2 and 3, an actuator support 4 and a guy cable 8 are positioned at the same side of an actuating strut 3, the bottom of the actuator support 4 is welded and fixed at the top of a hinged support 1, the actuator support 4 comprises an adjustable support 4.1, an adjusting plate 4.2 and a support plate 4.3, two parallel vertical slideways are arranged on the side surface of the adjustable support 4.1 and used as a track for the actuator 5 to slide up and down, the back surface of the adjusting plate 4.2 is provided with a bulge matched with the slideways, the bulge is clamped into the slideways and can slide relative to the slideways, the adjusting plate 4.2 is locked and fixed with the adjustable support 4.1 through a locking piece, the adjusting plate 4.2 is provided with locking holes communicated with the front surface and the back surface of the adjusting plate, the inner wall of the slideways is provided with a plurality of wave-shaped structures for positioning, the locking piece is convenient for clamping, the locking piece adopts a screw rod, the locking piece passes through the locking holes to fix the adjusting plate 4.2 into the slideways of the adjustable support 4.1, thus the support plate 4.3 can move up and down and fix, the position of the actuator 5 acting on the actuating support rod 3 can be adjusted, the actuator 5 is an existing device for exerting force, a servo actuator 5 can be adopted, the actuator 5 is provided with an output rod 5.1, the end part of the output rod 5.1 is over against the actuating support rod 3, a pressure sensor 7 is arranged between the output rod 5.1 of the actuator 5 and the actuating support rod 3, and the pressure sensor 7 is matched and fixed with the end part of the output rod 5.1, so that the force output and the force induction are facilitated; the support plate 4.3 is vertically welded to the bottom edge of the adjusting plate 4.2, the support plate 4.3 is used for mounting the actuator 5, the actuator 5 is fixed through the support plate 4.3 and provides support for the actuator 5, the actuator 5 slides up and down through mutual matching of the adjusting plate 4.2 and the slide way, the position of the actuator 5 is adjusted, the position of acting force of the actuator 5 can be adjusted to a certain degree, and therefore the tension of the inhaul cable 8 can be adjusted through the actuating support rod 3; spacing subassembly 6 is installed at support plate 4.3, and spacing subassembly 6 adopts the top to be curved wedge, the top of wedge and the shape phase-match of actuator 5's bottom both sides, and wedge welded fastening is on support plate 4.3, and actuator 5's bottom both sides all block has the wedge, blocks actuator 5 on support plate 4.3 through spacing subassembly 6 like this, can restrict actuator 5 operating position, avoids actuator 5 to take place the position skew. Actuator 5 installs 4 backs to actuator support, can adjust suitable position with actuator 5 on the one hand, and 5 output force positions of actuator can be adjusted at any time, provide stable output control power, make test model nimble more changeable, and on the other hand can adjust the power of applying force of actuator 5 in great range, and when damping and energy are great, the increase is to the pulling force of cable 8 to reduce vibration, maintain better damping effect.

The top end of the actuating strut 3 is fixed with one end of a tension sensor 9 and is connected with the tension sensor 9 through a screw, the other end of the tension sensor 9 is connected with a stay cable 8, the stay cable 8 is arranged and extends to a fixed strut 16, for the convenience of explanation, the stay cable 8 is divided into two sections, the first section of the stay cable 8 is stretched between the actuating strut 3 and the fixed strut 16, one end of the first section of the stay cable 8 is used for being connected with the tension sensor 9, the other end of the first section of the stay cable 8 is connected with one end of the second section of the stay cable 8, the other end of the second section of the stay cable 8 is connected with a counterweight 15 and is connected in a bundling or lifting hook mode, the top end of the fixed strut 16 is provided with a triangular bracket, the top of the triangular bracket is provided with a chute for placing the stay cable 8, the second section of the stay cable 8 is movably connected in the chute, the other part of the stay cable 8 is suspended beside the fixed strut 16 due to the connection with the counterweight 15, and the stay cable 8 is movably connected with the fixed strut 16, the mode of arranging a pulley can be adopted, or the inhaul cable 8 can be directly lapped on the top of the fixed support rod 16; a movable adjustable base 14 is arranged between the hinged support 1 and the fixed support 17, the position of the movable adjustable base is close to the fixed support 17 and is positioned below the first section of the inhaul cable 8, the base is an existing lifting device with an electric cylinder and is used for adjusting the height of the vibration exciter 13, the bottom of the base is fixed on the ground through an expansion screw, a clamping groove is formed in the top of the base, a connecting hole is formed in the top of the base at the clamping groove, the vibration exciter 13 is fixed on the base through a screw rod penetrating through the connecting hole and a mounting hole formed in the bottom of the vibration exciter 13, the movable adjustable base 14 is used for supporting the vibration exciter 13 and facilitating position movement of the movable adjustable base 14, the vibration exciter 13 is an existing vibrating device and can provide periodic vibration, external excitation in simple harmonic, pulse or other forms or random output signals can be performed according to needs, the top end of the vibration exciter 13 is connected to the first section of the inhaul cable 8 through a spring, the vibration is transmitted to the inhaul cable 8 through the vibration exciter 13, so that the inhaul cable 8 is output with an excitation signal, and different vibration environments of the inhaul cable 8 are provided.

Referring to fig. 4 and 5, the reflective plate 10 is made of a material capable of reflecting laser, a groove matched and clamped with the cable 8 is formed in the bottom of the reflective plate 10, the reflective plate 10 is arranged at the first section of the cable 8, in an initial state, the reflective plate 10 is kept horizontal and is located in the laser output direction of the laser displacement meter 11, the laser can be directly applied to the surface of the reflective plate 10, so that the displacement of the reflective plate 10 caused by vibration can be measured, the displacement state is fed back in real time through the reflective plate 10, and the movement displacement state data of the cable 8 is collected in real time through the laser displacement meter 11, so that the vibration state of the cable 8 is reflected; the laser displacement meter 11 is arranged on an upper displacement meter bracket 12, the displacement meter bracket comprises a bracket base 12.1, a base column 12.2, an expansion link 12.3, a fastener 12.4, a height adjusting block 12.5, a fixing plate 12.6 and a horizontal supporting rod 12.7, the laser displacement meter 11 is fixed on the front surface of the fixing plate 12.6 and is fixed in a mode of attaching or screw connection and the like, and the laser displacement meter 11 is arranged right above the inhaul cable 8 through the fixing plate 12.6; the bottom end of a base column 12.2 is fixedly welded with a support base 12.1, a telescopic rod 12.3 is in shaft sleeve connection with the base column 12.2, a rod hole is formed in the top end of the base column 12.2, the bottom end of the telescopic rod 12.3 is inserted into and matched with the rod hole, a hollow steel round tube is adopted as the base column 12.2 of the embodiment, a solid steel round tube is adopted as the telescopic rod 12.3, a solid round steel is inserted into the hollow steel round tube, a threaded hole is formed in the position, corresponding to the insertion hole in the top end of the hollow steel round tube, of a fastening piece 12.4 is matched with the threaded hole, up-and-down relative movement and fixation of the hollow steel round tube and the solid steel round tube are achieved through loosening and fastening of the fastening piece 12.4, accordingly height adjustment is achieved, the height adjusting block 12.5 is fixedly connected with the top end of the telescopic rod 12.3, specifically, the top end of the telescopic rod 12.3 penetrates through a round hole formed in a height adjusting block 12.5, the height adjusting block 12.5 can slidably adjust the height relative to the support base 12.1 through the telescopic rod 12.3, fastening holes formed in the side face of the height adjusting block 12.5, a fastener 12.4 is matched, the height adjusting block 12.5 is moved and positioned on the solid steel round pipe through the fastener 12.4, two ends of a horizontal supporting rod 12.7 are respectively connected with the height adjusting block 12.5 and a fixing plate 12.6, one end of the horizontal supporting rod 12.7 is integrally formed with the height adjusting block 12.5, and the other end of the horizontal supporting rod 12.7 is matched and connected with a threaded hole arranged on the back surface of the fixing plate 12.6 and is vertical to the fixing plate 12.6; through displacement meter support 12, can adjust the horizontal position for cable 8, also can adjust the vertical height of laser displacement meter 11 for ground, conveniently fix a position laser displacement meter 11, according to the experimental needs of multimode, acquire the data acquisition of laser displacement meter 11 to all positions of cable 8 to satisfy the experimental needs of cable 8 damping multimode.

The embodiment is further provided with a first power supply 18, a second power supply 19 and a controller 20, wherein the first power supply 18 and the second power supply 19 adopt storage batteries, the controller 20 adopts a computer, software for analyzing and collecting data is arranged in the computer, the first power supply 18 is electrically connected with the actuator 5, the second power supply 19 is electrically connected with the vibration exciter 13, the laser displacement meter 11 is electrically connected with the computer, the actuator 5 and the vibration exciter 13 are provided with voltage through the first power supply 18 and the second power supply 19, the tension sensor 9, the pressure sensor 7 and the laser displacement meter 11 are respectively and electrically connected to the controller 20, the first power supply 18 and the second power supply 19 are respectively and electrically connected to the controller 20, and sensing signals of the tension sensor 9, the pressure sensor 7 and the laser displacement meter 11 are collected through the controller 20, so as to analyze the optimal active control force, and thereby adjust the actuator 5, the actuating strut 3 is supported by an output rod 5.1 of the actuator 5 to tension the inhaul cable 8, and the actuating strut 3 adjusts the tension of the inhaul cable 8 to an optimal state to reduce the vibration displacement and finally achieve the purpose of damping the inhaul cable 8.

The existing vibration damper can not actively regulate vibration, the device outputs and excites the inhaul cable 8 through the vibration exciter 13, the vibration exciter 13 provides various different vibrations, the vibration damper is suitable for various vibration conditions, the inhaul cable 8 is tensioned through the actuating strut 3 and the balancing weight 15, so that the inhaul cable 8 keeps certain tensile stress and is closer to the actual state of engineering, the actuator 5 applies supporting force to the actuating strut 3, the supporting force can be accurately regulated, accurate force output is realized, based on the lever principle, the actuating strut 3 always applies pulling force to the inhaul cable 8, the rigidity and the damping of the inhaul cable 8 are changed, the pulling force of the actuating strut 3 to the inhaul cable 8 is fed back through the tension sensor 9, the pressure of the actuator 5 to the actuating strut 3 is fed back through the pressure sensor 7, the vibration state of the inhaul cable 8 is fed back through the laser displacement meter 11, the pulling force condition on the inhaul cable 8 and the applied force state of the output end of the actuator 5 can be collected in real time, so as to collect data for analysis, adjust and control the actuator 5 according to the force applied, and realize the active vibration damping control of the inhaul cable 8.

Example 2

The embodiment provides a cable vibration damping test model device, and is substantially the same as embodiment 1, except that: in embodiment 1, a wired connection method is adopted, whereas in the present embodiment, a wireless connection method is adopted, and differences between the present embodiment and embodiment 1 will be described below.

Referring to fig. 6, the embodiment further includes a first wireless transmission base station 21, a second wireless transmission base station 22, a third wireless transmission base station 23, and a fourth wireless transmission base station 24, where the first wireless transmission base station 21 is electrically connected to the pressure sensor 7, the tension sensor 9, and the laser displacement meter 11, respectively, the second wireless transmission base station 22 is electrically connected to the first power source 18, the third wireless transmission base station 23 is electrically connected to the controller 20, and the fourth wireless transmission base station 24 is electrically connected to the second power source 19, where the third wireless transmission base station 23 is communicatively connected to the first wireless transmission base station 21, the second wireless transmission base station 22, and the fourth wireless transmission base station 24, respectively; the first power supply 18 and the second power supply 19 are both provided with a built-in controller 20 and can control and output different currents, the first power supply 18 is electrically connected with the actuator 5 and supplies power to the actuator 5 and controls the input of the current of the actuator 5, the second power supply 19 is electrically connected with the vibration exciter 13 and supplies power to the vibration exciter 13 and controls the input of the current of the vibration exciter 13, the laser displacement meter 11 is electrically connected with the controller 20, and the controller 20 adopts a PC; after the electrical connection and the communication connection are formed, the wireless remote control can be realized by simulating the actual engineering, the influence of the time lag of the data in the wireless transmission process on the vibration reduction effect is considered, and meanwhile, a time lag compensation method can be designed according to needs to improve the vibration reduction effect, specifically, the controller 20 sends a working instruction to the fourth wireless transmission base station 24 through the third wireless transmission base station 23, the fourth wireless transmission base station 24 transmits the instruction to the second power supply 19, the second power supply 19 controls the current size of the vibration exciter 13, the vibration exciter 13 works and outputs vibration to the stay cable 8, the vibration data sensed by the laser displacement meter 11, the tension data sensed by the tension sensor 9 and the pressure data sensed by the pressure sensor 7 are all sent to the third wireless transmission base station 23 through the first wireless transmission base station 21 and then transmitted to the controller 20, after the controller 20 calculates the parameters which should be output by the actuator 5 through a built-in program, the third wireless transmission base station 23 sends the instruction to the second wireless transmission base station 22, and the second power supply 19 outputs current to the actuator 5 after receiving the instruction of the second wireless transmission base station 22, so that the actuator 5 is controlled to perform a vibration reduction test on the cable 8, vibration displacement is reduced, and the purpose of damping the cable 8 is finally achieved.

Compared with the embodiment 1, the data transmission is wireless transmission, the time-lag of the wireless transmission can be obtained at the controller 20 end by simultaneously acquiring the time-lag of the wired data and the wireless data, namely, the data collected in the wired mode is slightly earlier than the data collected in the wireless mode, according to the actually measured time-lag, a time-lag compensation program and the time-lag compensation size are added into a built-in program of the controller 20, the time-lag compensation is carried out on the data transmitted wirelessly, the comparative analysis of the vibration damping effect of the inhaul cable 8 without time lag, with time lag and time-lag compensation can be realized, and the research rule and the result required by the test are obtained.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a cable damping test model device, its characterized in that, includes actuating branch and fixed branch that mutual interval set up to and cable, balancing weight, actuator and vibration exciter, the first section stretch-draw of cable is actuating between branch and the fixed branch, the vibration exciter is connected to the first section of cable to cable output excitation signal, and the one end of cable is fixed to actuating branch, it is rotatable for ground to actuate branch, it supports through the output pole of actuator to actuate branch, in order to with the cable tensioning, the second section and the fixed branch swing joint of cable, the other end and the balancing weight of cable are connected, and the balancing weight hangs perpendicularly in fixed branch other.

2. The cable vibration damping test model device according to claim 1, further comprising a laser displacement meter, a reflection plate and a displacement meter support, wherein the reflection plate is fixed on the first section of the cable, the reflection plate is located in a laser output direction of the laser displacement meter, the laser displacement meter is fixed on the displacement meter support, and the relative position of the laser displacement meter on the displacement meter support can be adjusted.

3. The inhaul cable vibration damping test model device according to claim 2, wherein the displacement meter support comprises a support base, a base column, a telescopic rod, a fastener, a height adjusting block, a fixing plate and a horizontal support rod, the bottom end of the base column is fixed with the support base, the telescopic rod is connected with the base column through a shaft sleeve, the height adjusting block is connected with the telescopic rod, the height adjusting block can slidably adjust the height relative to the support base through the telescopic rod, the fastener is arranged at the joint of the base column and the telescopic rod and the joint of the height adjusting block and the telescopic rod respectively, the height adjusting block and the fixing plate are connected with two ends of the horizontal support rod respectively, and the laser displacement meter is fixed on the fixing plate.

4. The inhaul cable vibration damping test model device according to claim 2, further comprising a tension sensor and a pressure sensor, wherein one end of the inhaul cable is connected to the actuating strut through the tension sensor, and the pressure sensor is arranged between the output rod of the actuator and the actuating strut.

5. The inhaul cable vibration damping test model device according to claim 1, further comprising an actuator support, wherein the actuator support comprises an adjustable support, an adjusting plate and a support plate, a slide way in the vertical direction is arranged on the side face of the adjustable support, the adjusting plate is clamped into the slide way and can slide relative to the slide way, the adjusting plate is locked and fixed with the adjustable support through a locking member, the support plate is connected to the adjusting plate, and the support plate is used for installing an actuator.

6. The inhaul cable vibration damping test model device as claimed in claim 5, wherein the actuator support further comprises a limiting assembly, the limiting assembly is mounted on the support plate and clamps two sides of the actuator.

7. The inhaul cable vibration damping test model device according to claim 1, further comprising a hinge support, a fixed support and a fixing piece, wherein the actuating strut is hinged to the hinge support, the fixed strut is fixed to the fixed support, and the hinge support and the fixed support are respectively fixed to the ground through the fixing piece.

8. The inhaul cable vibration reduction test model device according to claim 1, further comprising a first power supply and a second power supply, wherein the first power supply is electrically connected with the actuator, and the second power supply is electrically connected with the vibration exciter.

9. The inhaul cable vibration reduction test model device according to claim 1, further comprising a movable adjustable base, wherein the movable adjustable base is arranged below the first section of the inhaul cable, and the movable adjustable base is used for placing a vibration exciter.

10. The inhaul cable vibration damping test model device according to claim 4, further comprising a controller, wherein the tension sensor, the pressure sensor and the laser displacement meter are in communication connection with the controller in a wired or wireless mode respectively.

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