CN118275106A - Bridge guy cable stretching resonance detection device - Google Patents
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Abstract
The invention belongs to the technical field of inhaul cable detection, and particularly relates to a bridge inhaul cable stretching resonance detection device which comprises two semi-cylinders and an inhaul cable main body, wherein the two semi-cylinders are clamped on the outer side of the inhaul cable main body, a movable clamping mechanism is arranged above the two semi-cylinders, the two semi-cylinders and the movable clamping mechanism are jointly provided with a traveling driving mechanism, the side walls of the two semi-cylinders are fixedly inserted with a group of fixed electric push rods, the output ends of the same group of two fixed electric push rods are fixedly provided with sound insulation clamping sleeves, the side walls of the two sound insulation clamping sleeves are provided with middle grooves, and the inner parts of the two middle grooves are fixedly provided with piezoelectric ceramic components. The invention can detect the bridge inhaul cable all the day, can detect the phenomena of breakage, loosening, stretching, twisting and the like possibly existing in the inhaul cable in a mode of field cruising detection, and can prevent the phenomena of false triggering and early warning caused by accidental vibration and normal vibration as much as possible.
Description
Technical Field
The invention belongs to the technical field of inhaul cable detection, and particularly relates to a bridge inhaul cable stretching resonance detection device.
Background
The cable is one of the main components of transferring load in the bridge, is quite common in cable-stayed bridges and suspension bridges, is usually twisted by a plurality of steel wires, and can transfer the load of the bridge main body to the bridge stress structure, so that the bridge can span a larger distance, the quality of the cable is very important, and the detection of the cable is also very necessary.
At present, after the stay cable is installed, the bridge deck or the stay cable is subjected to external actions such as wind power and the like, resonance phenomena can occur, for example, when wind blows through the stay cable, airflow can form on the surface of the stay cable, vortex can be generated by the airflow at a specific wind speed and periodically fall off on the stay cable, vibration excitation can be generated by periodic acting force generated by vortex falling off, resonance is easy to occur if the natural frequency of the stay cable is similar to the frequency of vibration excitation, the vibration amplitude of the stay cable is rapidly increased due to resonance, and damage such as stretching of the stay cable is caused, so that the stay cable needs to be detected, and the bridge stay cable stretching resonance detection device disclosed in patent publication No. CN110686978B is used;
The above-mentioned publication can simulate the environment such as outside wind-force under, carry out the detection of resonance stretching to the cable, but because the bridge cable is in under the open air environment, the external environment that needs to deal with is comparatively complicated, such as steam erosion etc., the performance of cable self also can change along with the change of time and environment, lead to its ability of coping with outside vibration excitation also can change, so simulation detection environment detection's result still is not close enough to reality, simultaneously, because the cable can appear phenomenon such as tiny stretching, some steel wire fracture, steel wire loosening under resonance effect, if not in time discover, then probably influence the safety in utilization of bridge.
Disclosure of Invention
The invention aims to solve the problems and provide a bridge guy cable stretching resonance detection device.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a bridge cable tensile resonance detection device, includes two semi-cylinders and cable main part, two the semi-cylinder cutting ferrule is in the outside of cable main part, two the top of semi-cylinder is equipped with removes fixture, two the semi-cylinder is common installs walking actuating mechanism with removing fixture, two the lateral wall of semi-cylinder all is fixed to peg graft there is a set of fixed electric push rod, and with the equal fixed mounting of output of two fixed electric push rods of group have the clamping sleeve that gives sound insulation, two the intermediate tank has all been seted up to the lateral wall of clamping sleeve that gives sound insulation, and the inside in two intermediate tanks is equal fixed mounting has piezoelectric ceramic subassembly, the mounting groove has all been seted up at both ends about the inner wall of clamping sleeve that gives sound insulation, and the tank bottom of each mounting groove is equal fixed mounting has voice player, one of them the internally mounted of semi-cylinder has the control mainboard, and voice player and control mainboard electric connection, one of them the lateral wall fixed mounting of clamping sleeve has first electromagnetic switch, and two piezoelectric ceramic subassemblies all have through control mainboard and first electromagnetic switch electric connection, one of them inner wall fixed mounting of semi-cylinder has the emitting device and control mainboard electric connection, and the mutual actuating mechanism of the electromagnetic actuator of semi-cylinder has the electromagnetic actuator that the electromagnetic actuator is connected with the top, the electromagnetic actuator is connected with the electromagnetic actuator, the electromagnetic actuator is connected with the inside of the electromagnetic actuator that the electromagnetic actuator has, and the electromagnetic actuator is connected with the top is connected.
Preferably, the movable clamping mechanism comprises two half supporting sleeves sleeved on the outer side of the inhaul cable main body, the side walls of the two half supporting sleeves are fixedly inserted with movable electric push rods, the output ends of the two movable electric push rods are fixedly provided with fixed clamping sleeves, and the inner walls of the two fixed clamping sleeves are propped against the side walls of the inhaul cable main body.
Preferably, the walking driving mechanism comprises two extending parts which are integrally formed on the outer side wall of the semi-cylinder, the two extending parts on the same side are fixedly connected with an air cylinder and a magnetism isolating cylinder in a plugging mode, two piston columns are arranged in the air cylinder in a sliding mode, the end portions of the piston columns are fixedly connected with the bottoms of the semi-supporting sleeves on the same side, the bottoms of the air cylinders are fixedly connected with air inlet pipes in a plugging mode, the side walls of the air cylinders are provided with air exhaust holes, the inner portions of the two air exhaust holes are provided with first normally closed electromagnetic valves electrically connected with a control main board, the inner portions of the magnetism isolating cylinders are fixedly connected with non-magnetic columns in a sliding mode, the lower ends of the non-magnetic columns and the inner bottoms of the magnetism isolating cylinders are fixedly connected with first electromagnets, and the tops of the two non-magnetic columns are fixedly connected with the semi-supporting sleeves on the same side.
Preferably, the air supply mechanism comprises an air box fixedly arranged at the bottom of one of the semi-cylinders, an air pump is fixedly arranged at the bottom of the other semi-cylinder, the output end of the air pump is communicated with the air box, two air outlet pipes are fixedly inserted into the side wall of the air box, normally open electromagnetic valves electrically connected with the control main board are arranged in the two air outlet pipes, and the two air outlet pipes are communicated with the same side air inlet pipe.
Preferably, the triggering mechanism comprises a fixed sleeve fixedly inserted into the end face of the air box, an insulating cylinder is fixedly installed in the fixed sleeve, a second normally closed electromagnetic valve electrically connected with the control main board is installed in the fixed sleeve, a plurality of conductive sleeves are fixedly installed on the inner wall of the insulating cylinder, conductive rings matched with the conductive sleeves are movably arranged in the insulating cylinder, a plurality of heat insulation groove blocks are fixedly inserted into the outer side wall of the insulating cylinder, electric heating columns electrically connected with the corresponding conductive sleeves and the conductive rings are fixedly installed at the end parts of the heat insulation groove blocks, thermistors are fixedly installed in grooves of the heat insulation groove blocks, and a second electromagnetic switch electrically connected with the thermistors is fixedly installed on the outer side wall of the insulating cylinder and electrically connected with the control main board.
Preferably, the magnetic component comprises an insulating rod arranged inside the insulating cylinder, the conducting ring is fixedly sleeved on the outer side of the insulating rod, a T-shaped iron core is fixedly arranged at the top of the insulating rod, a non-magnetic spring is fixedly arranged between the T-shaped iron core and the inner wall of the insulating cylinder, and a second electromagnet is fixedly arranged on the upper side of the inner part of the insulating cylinder.
Preferably, the stretching and twisting detection mechanism comprises an infrared range finder fixedly arranged at the top of one of the half supporting sleeves, a mounting disc is fixedly sleeved on the outer side wall of the upper anchoring end of the guy rope main body, a frustum corresponding to the position of the infrared range finder is fixedly arranged at the bottom of the mounting disc, a plurality of reflecting sheets are fixedly arranged on the outer side wall of the frustum, and a shading sleeve is fixedly arranged at the lower end of the mounting disc.
Preferably, the upper end of the fixing sleeve extends to the inside of the same-side semi-cylinder, and the air box is communicated with the same-side semi-cylinder through the fixing sleeve.
Compared with the prior art, the bridge inhaul cable stretching resonance detection device has the advantages that:
Through the semi-cylinder that sets up, remove fixture, walking actuating mechanism, fixed electric push rod, give sound insulation the clamping sleeve, control mainboard mutually support, can walk the detection of cruising to the bridge cable after the installation, through the mode of cruising in the field detection, the voice player of cooperation setting, a electromagnetic switch can be in daily inspection maintenance, or after the resonance phenomenon appears, detect the fracture, the phenomenon such as loose that probably exist to the cable, detect simple and conveniently, compare more accurate in simulation environment detection.
Through fixed electric push rod, the clamping sleeve that gives sound insulation, intermediate tank, piezoceramics subassembly, mounting groove and the wireless transmitter of setting up, can carry out resonance detection to the cable on line to in time give relevant personnel with resonance information transmission, the vehicle and the pedestrian of relevant personnel in time management and control entering bridge department of being convenient for.
Through the air feed mechanism who sets up, can regard as walking actuating mechanism's air supply, and trigger mechanism and the magnetism subassembly of inhaling that the cooperation set up can be based on vibration detection's result, and cooperation air feed mechanism's air current can prevent as far as possible that sporadic vibration and normal vibration from causing the phenomenon of mistake triggering early warning, through the tensile distortion detection mechanism of setting, can carry out tensile and the quick and accurate detection of distortion to the cable.
Drawings
FIG. 1 is a schematic structural diagram of a bridge cable tensile resonance detection device provided by the invention;
Fig. 2 is a schematic diagram of the internal structure of two semi-cylinders of the bridge guy cable stretching resonance detection device provided by the invention;
fig. 3 is a schematic top view structure of two semi-cylinders of the bridge cable stretching resonance detection device provided by the invention;
FIG. 4 is a schematic diagram of the internal structure of an inflator of the bridge guy cable tensile resonance detection device provided by the invention;
FIG. 5 is a schematic diagram of the internal structure of a magnetism isolating cylinder of the bridge guy cable stretching resonance detection device provided by the invention;
FIG. 6 is a schematic structural view of an air supply mechanism of the bridge guy cable stretching resonance detection device provided by the invention;
fig. 7 is a schematic diagram of the internal structure of a fixing sleeve of the bridge cable stretching resonance detection device;
FIG. 8 is an enlarged view of the structure of the portion A in FIG. 7 of the bridge cable tension resonance detection device provided by the invention;
fig. 9 is a schematic diagram of the internal structure of a shading sleeve of the bridge cable stretching resonance detection device.
In the figure: a1 semi-cylinder, a2 guy cable main body, a 3 moving clamping mechanism, a 31 semi-supporting sleeve, a 32 movable electric push rod, a 33 fixed clamping sleeve, a 4 walking driving mechanism, a 41 extending part, a 42 air cylinder, a 43 magnetism isolating cylinder, a 44 piston cylinder, a 45 air inlet pipe, a 46 exhaust hole, a 47 first normally closed electromagnetic valve, a 48 magnetism-free cylinder, a 49 first electromagnet, a 5 fixed electric push rod, a 6 sound insulating clamping sleeve, a 7 middle groove, an 8 piezoelectric ceramic component, a 9 mounting groove, a 10 voice player, a 11 control main board, a 12 first electromagnetic switch, a 13 wireless transmitter, a 14 air supply mechanism, a 141 air box, a 142 air pump, a 143 air outlet pipe, a 144 normally open electromagnetic valve, a 15 triggering mechanism, a 151 fixed sleeve, a 152 insulating cylinder, a 153 second electromagnetic valve, a 154 conductive sleeve, a 155 conductive ring, a 156 heat insulating groove block, a 157 electric heating cylinder, a 158 thermistor, a 159 second electromagnetic switch, a 16 magnetism-absorbing component, a 161 insulating rod, a 162T-shaped iron core, a 163 magnetism-free spring, a 164 second electromagnet, a 17 stretching torsion detecting mechanism, a 171 infrared range finder, a 172 mounting disc, a 173, a 174 reflecting table, a 175 reflecting sheet, a 175.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
As shown in fig. 1-9, a bridge cable stretching resonance detection device comprises two semi-cylinders 1 and a cable main body 2, wherein the two semi-cylinders 1 are sleeved on the outer side of the cable main body 2, a movable clamping mechanism 3 is arranged above the two semi-cylinders 1, the movable clamping mechanism 3 comprises two semi-supporting sleeves 31 sleeved on the outer side of the cable main body 2, movable electric push rods 32 are fixedly inserted on the side walls of the two semi-supporting sleeves 31, fixed clamping sleeves 33 are fixedly installed at the output ends of the two movable electric push rods 32, the inner walls of the two fixed clamping sleeves 33 are propped against the side walls of the cable main body 2, and the movable electric push rods 32 work to enable the fixed clamping sleeves 33 to clamp the outer side of the cable main body 2, so that the two fixed clamping sleeves 33 can temporarily bear the weight of the whole device.
The two semi-cylinders 1 and the movable clamping mechanism 3 are jointly provided with the walking driving mechanism 4, the walking driving mechanism 4 comprises two extending parts 41 which are integrally formed and arranged on the outer side wall of the semi-cylinder 1, the two extending parts 41 on the same side are fixedly connected with the air cylinders 42 and the magnetism isolating cylinders 43 in a plugging mode, piston columns 44 are fixedly arranged inside the two air cylinders 42 in a sliding mode, the end portions of the piston columns 44 are fixedly connected with the bottoms of the same side semi-supporting sleeves 31, air inlet pipes 45 are fixedly connected with the bottoms of the two air cylinders 42 in a plugging mode, exhaust holes 46 are formed in the side walls of the two air cylinders 42, a first normally closed electromagnetic valve 47 electrically connected with the control main board 11 is arranged inside the two exhaust holes 46, a non-magnetic column 48 is fixedly arranged inside the two magnetism isolating cylinders 43, the lower ends of the non-magnetic columns 48 and the inner bottoms of the magnetism isolating cylinders 43 are fixedly connected with the first electromagnetic valve 49, redundant air inside the air cylinders 42 can be conveniently opened when the first normally closed electromagnetic valve 47 inside the exhaust holes 46 are electrified, and redundant air inside the air cylinders 44 are also arranged at the upper ends of the side walls of the two air cylinders 42.
The lateral wall of two semi-cylinders 1 all fixedly grafting has a set of fixed electric push rod 5, and with the equal fixed mounting of output of two fixed electric push rods 5 of group have the centre gripping cover 6 that gives sound insulation, the intermediate tank 7 has all been seted up to the lateral wall of two centre gripping covers 6 that gives sound insulation, and the inside equal fixed mounting of two intermediate tanks 7 has piezoceramics subassembly 8, mounting groove 9 has all been seted up at both ends about the inner wall of centre gripping cover 6 that gives sound insulation, and the tank bottom equal fixed mounting of each mounting groove 9 has pronunciation player 10, pronunciation player 10 can play the sound recorded in advance, the internally mounted of one of them semi-cylinder 1 has control mainboard 11, and pronunciation player 10 and control mainboard 11 electric connection, the lateral wall fixed mounting of one of them sound insulation centre gripping cover 6 has first electromagnetic switch 12, and the inner wall fixed mounting of two piezoceramics subassembly 8 all has with first electromagnetic switch 12 electric connection through control mainboard 11, the inside equal fixed mounting of one of half-cylinder 1 has wireless transmitter 13 with control mainboard 11 electric connection, wireless transmitter 13 can send information to the remote terminal, the bottom mounting of one of half-cylinder 1 has the air outlet duct 14 that is linked together with walking driving mechanism 4, the air duct 14 is including two air duct 141 and two normally-open side air duct 141 are linked together with two normally-open air duct 141, two normally-open side air duct 141 and two air duct 141 are linked together, the two normally-open side channel 141 are all has the two air duct 141 to be linked together, the inside of the two-open side duct 141 is linked to the two air duct 141 is the one is the two air duct 1, and the air duct 141 is the electric has the electric connection.
The trigger mechanism 15 that is connected with the air supply mechanism 14 is installed on the semi-cylinder 1, the trigger mechanism 15 includes a fixed sleeve 151 that is fixedly inserted into the end face of the air box 141, an insulating cylinder 152 is fixedly installed inside the fixed sleeve 151, a second normally closed electromagnetic valve 153 that is electrically connected with the control main board 11 is installed inside the fixed sleeve 151, a plurality of conductive sleeves 154 are fixedly installed on the inner wall of the insulating cylinder 152, a conductive ring 155 that is matched with the conductive sleeves 154 is movably installed inside the insulating cylinder 152, a plurality of heat insulation groove blocks 156 are fixedly inserted into the outer side wall of the insulating cylinder 152, electric heating columns 157 that are electrically connected with the corresponding conductive sleeves 154 and the conductive rings 155 are fixedly installed at the end portions of the heat insulation groove blocks 156, a thermistor 158 is fixedly installed in each groove of the heat insulation groove blocks 156, a second electromagnetic switch 159 that is electrically connected with each thermistor 158 is fixedly installed on the outer side wall of the insulating cylinder 152, the second electromagnetic switch 159 is electrically connected with the control main board 11, and when the temperature of the thermistor 158 rises, the resistor 158 resists against each other.
The upper end of fixed cover 151 extends to the inside of homonymy semicircle section of thick bamboo 1, and the gas box 141 is linked together with homonymy semicircle section of thick bamboo 1 through fixed cover 151, and fixed cover 151 exhaust hot air can get into inside two semicircle section of thick bamboo 1 to finally discharge through the clearance between two semicircle section of thick bamboo 1 and the cable main part 2, the hot air can carry out certain drying to inside two semicircle section of thick bamboo 1.
The inside of trigger mechanism 15 is equipped with magnetism and inhales subassembly 16, two piezoceramics subassembly 8 are through controlling mainboard 11 and magnetism and inhale subassembly 16 electric connection, magnetism is inhaled subassembly 16 and is including setting up in the inside insulator spindle 161 of insulator spindle 152, and the outside of insulator spindle 161 is located to conducting ring 155 fixed cover 151, the top fixed mounting of insulator spindle 161 has T shape iron core 162, and be equipped with no magnetic spring 163 between the inner wall of T shape iron core 162 and insulator spindle 152, the inside upside fixed mounting of insulator spindle 152 has second electro-magnet 164, can produce magnetism attraction and adsorb T shape iron core 162 after the second electro-magnet 164 circular telegram.
The top of the movable clamping mechanism 3 and the guy cable main body 2 are jointly provided with the stretching and twisting detection mechanism 17, the stretching and twisting detection mechanism 17 comprises an infrared range finder 171 fixedly arranged at the top of one of the half supporting sleeves 31, an installation disc 172 is connected to an outer side wall fixing sleeve 151 of the upper side anchoring end of the guy cable main body 2, a frustum 173 corresponding to the position of the infrared range finder 171 is fixedly arranged at the bottom of the installation disc 172, a plurality of reflecting sheets 174 are fixedly arranged on the outer side wall of the frustum 173, a shading sleeve 175 is fixedly arranged at the lower end of the installation disc 172, the infrared range finder 171 emits infrared rays and receives the reflected infrared rays, and the distance between the infrared range finder 171 and a target object can be measured by calculating the reflected infrared rays.
The principle of operation of the present invention will now be described as follows: the two semi-cylinders 1 are sleeved on the outer side of the installed inhaul cable main body 2, the two semi-cylinders 1 are locked together, then the control main board 11 is connected with an external power supply cable (a certain stretchable allowance needs to be reserved on the external cable), then the two air outlet pipes 143 are connected with the corresponding air inlet pipes 45, the control main board 11 is started to carry out resonance detection on the inhaul cable main body 2, at the moment, the control main board 11 controls the two groups of fixed electric push rods 5 and the two movable electric push rods 32 to carry out output work at fixed time, so that the two fixed clamping sleeves 33 and the two sound insulation clamping sleeves 6 can be propped against the inhaul cable main body 2, and the whole device can be fixed on the inhaul cable main body 2;
When the guy cable main body 2 vibrates, the vibration of the guy cable main body 2 is transmitted to the two sound insulation clamping sleeves 6, at this time, under the vibration action, the lattice structures in the ceramics of the two piezoelectric ceramic components 8 deform due to vibration, so that the centers of positive and negative charges shift, and charge distribution is generated on the surface, the charges accumulate to form potential differences, and then currents are generated, the currents are amplified by the control main board 11 in the same proportion and then are introduced into the second electromagnet 164, the second electromagnet 164 generates magnetic attraction to adsorb the T-shaped iron core 162 to drive the insulating rod 161 to enable the conducting ring 155 to move upwards, the conducting ring 155 moves upwards and contacts with one of the conducting sleeves 154, at this time, the corresponding electric heating columns 157 work synchronously, the air pump 142 and the second normally closed electromagnetic valve 153 work synchronously, the electric heating columns 157 are electrified and heat is generated, and air conveyed by the air pump 142 enters into a gap between the insulating cylinders 152 through the fixing sleeve 151, the heat generated by the electrothermal column 157 is quickly taken away by the flowing air, at this time, the temperature of the thermistor 158 at the corresponding position is still kept low, if the cable main body 2 is resonant, the frequency of the external excitation of the cable main body 2 is close to the natural frequency of the cable main body, so that the vibration is in close to the natural frequency to oscillate, that is, the vibration frequency of the cable main body 2 is relatively stable, at this time, the current generated by the piezoceramic assembly 8 is relatively stable, so that the current fed into the second electromagnet 164 is relatively stable, at this time, the conductive ring 155 is kept in continuous contact with one of the conductive sleeves 154, so that the corresponding electrothermal column 157 continuously works and heats up, at this time, the temperature of the thermistor 158 at the corresponding position is higher, the self resistance value of the thermistor 158 is reduced due to the temperature rise, the current flowing into the second electromagnetic switch 159 is correspondingly increased, at this time, after the control main board 11 receives the closing electric signal of the second electromagnetic switch 159, the control main board 11 immediately controls the wireless transmitter 13 to send out early warning information, after receiving the early warning information sent out by the wireless transmitter 13, related personnel should immediately organize personnel to check the bridge, if necessary, vehicles and personnel can be stopped from entering the bridge, if the guy cable main body 2 only sporadically vibrates or normal micro vibration occurs, the current flowing into the second electromagnet 164 cannot keep the conductive ring 155 in contact with a certain conductive sleeve 154 continuously, therefore, at this time, the electric heating column 157 cannot continuously generate heat, and under the heat dissipation effect of airflow, the thermistor 158 cannot make the second electromagnetic switch 159 magnetically attract to be closed, and the phenomenon that the control main board 11 controls the wireless transmitter 13 to work by mistake does not occur;
In the routine maintenance of the bridge or after the resonance of the cable main body 2 occurs, related personnel can start the inspection work of the cable main body 2 through the control main board 11, in the working mode, the control main board 11 is connected with the connecting loop of the piezoelectric ceramic component 8 and the first electromagnetic switch 12, when the detection of the cable main body 2 begins, the control main board 11 controls the two voice players 10 to work for 5 seconds at regular time, meanwhile, after the control main board 11 starts the voice players 10, the delay time is 15 seconds, the wireless transmitter 13 is started, the two voice players 10 immediately play pre-recorded sound, the sound wave can be transmitted to the two middle grooves 7 through the transmission of the cable main body 2, if the cable main body 2 does not have the phenomena of breakage, loosening and the like, the part of the cable main body 2 is compact, the obstruction of sound transmission is small, and the sound wave transmitted to the middle grooves 7 is large, at this time, the current generated by the two piezoelectric ceramic components 8 is larger, the current is amplified by the control main board 11 and then is led into the first electromagnetic switch 12, because the current is larger, the first electromagnetic switch 12 can magnetically attract and close the moving contact of itself in 15 seconds at this time because enough current is led in, the control main board 11 can receive the closing electric signal of the first electromagnetic switch 12 before controlling the wireless transmitter 13 to work, at this time, the control main board 11 can immediately stop the work of the wireless transmitter 13, if the guy cable main body 2 breaks, loosens and the like, more air is generated at the breaking point and the looseness of the guy cable main body 2, when the sound wave is transmitted to the defect, the sound wave is blocked by the air, so that the intensity of the sound wave transmitted to the piezoelectric ceramic component 8 becomes lower, at this time, the current generated by the piezoelectric ceramic component 8 also becomes correspondingly smaller, therefore, the current flowing into the first electromagnetic switch 12 by the control main board 11 is smaller, so that the control main board 11 cannot receive the closing electric signal of the first electromagnetic switch 12 within 15 seconds of the time delay operation of the control wireless transmitter 13, and therefore, the control main board 11 can control the wireless transmitter 13 to start to operate after 15 seconds, and the wireless transmitter 13 sends the information that the defect possibly exists to the handheld terminal of the maintenance personnel, and the personnel should immediately check the situation;
when no problem is detected at a single position of the guy rope main body 2 (i.e. a maintainer does not receive an alarm signal of the wireless transmitter 13), the control main board 11 controls the two movable electric push rods 32 to perform timing return operation after receiving an electric signal of the first electromagnetic switch 12, at this time, the two fixed clamping sleeves 33 are separated from the guy rope main body 2, then the control main board 11 controls the air pump 142 to perform timing operation for 1 minute, at this time, air conveyed by the air pump 142 enters the two air inlet pipes 45 through the two air outlet pipes 143 and finally enters the two air cylinders 42, under the action of rising air pressure, the two piston columns 44 synchronously move upwards, so that the two half supporting sleeves 31 can be driven to move upwards to a certain height, after the timing operation of the air pump 142 is finished, the control main board 11 controls the two movable electric push rods 32 again to perform timing output operation, at this time, the two fixed clamping sleeves 33 are propped against the guy rope main body 2 again, then the control main board 11 controls the two groups of fixed electric push rods 5 to perform timing return operation, so that the two sound insulation clamping sleeves 6 can be separated from the guy cable main body 2, then the control main board 11 controls each first electromagnet 49 to perform power-on operation, under the magnetic attraction effect of the two first electromagnets 49 on the same side, the non-magnetic column 48 is fixed under the semi-supporting sleeve 31, the semi-supporting sleeve 31 cannot move because of the fixed clamping sleeve 33, meanwhile, when the first electromagnets 49 perform power-on operation, the first normally closed electromagnetic valves 47 in the two exhaust holes 46 and the normally open electromagnetic valves 144 in the two air outlet pipes 143 are simultaneously powered on, so that the air in the air cylinder 42 is conveniently discharged, therefore, the magnetism isolating cylinder 43 drives the semi-cylinder 1 to move upwards by a certain height through the extension part 41, so that the whole device can move to the next detection position of the guy cable main body 2, then the control main board 11 controls the whole device again to repeat the detection steps until the whole device moves to the uppermost part of the inhaul cable main body 2, and the detection work of the whole inhaul cable main body 2 is completed;
When the whole device moves to the uppermost part of the cable main body 2, a person controls the infrared distance meter 171 to start working through the control main board 11, infrared rays emitted by the infrared distance meter 171 can irradiate to the end part of the frustum 173, the frustum 173 can reflect the infrared rays to the infrared distance meter 171, and the control main board 11 can synchronously send measurement information of the infrared distance meter 171 to a handheld terminal of the person through the wireless transmitter 13, the person can know the accurate distance between the frustum 173 and the infrared distance meter 171, if the cable main body 2 is stretched, the length of the whole cable main body 2 is relatively increased, therefore, the distance between the infrared distance meter 171 and the frustum 173 is also increased, the person can know that the cable main body 2 is stretched after judging that the received numerical information is increased relative to a preset numerical value, if the cable main body 2 has a distortion phenomenon, the infrared rays emitted by the infrared distance meter 171 cannot be aligned with the end part of the frustum 173, and can be reflected to the other places by the reflection sheet 174, at this moment, the infrared distance meter 171 cannot measure effective information, and the person cannot obtain the distortion phenomenon through the handheld terminal, namely the cable main body 2 can possibly show the distortion phenomenon.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The utility model provides a bridge cable tensile resonance detection device, includes two semicircle barrels (1) and cable main part (2), its characterized in that, two semicircle barrel (1) cutting ferrule is in the outside of cable main part (2), two the top of semicircle barrel (1) is equipped with removes fixture (3), two semicircle barrel (1) are together with remove fixture (3) and install walking actuating mechanism (4), two the lateral wall of semicircle barrel (1) is all fixed grafting has a set of fixed electric push rod (5), and with the equal fixed installation of output of two fixed electric push rods (5) of group have sound insulation clamping sleeve (6), two the lateral wall of sound insulation clamping sleeve (6) has all been seted up middle groove (7), and the equal fixed installation of inside of two middle grooves (7) piezoelectric ceramic subassembly (8), the upper and lower both ends have all been seted up at the inner wall of sound insulation clamping sleeve (6) mounting groove (9), and the tank bottom of each mounting groove (9) is all fixed installation has pronunciation player (10), one of them semicircle barrel (1)'s internally mounted has control player (11), and one of them is connected with sound insulation switch (12) outside electricity is connected with one of them and is fixed to control mainboard (12), and two piezoceramics subassembly (8) all through control mainboard (11) and first electromagnetic switch (12) electric connection, one of them the inner wall fixed mounting of semicircle section of thick bamboo (1) have with control mainboard (11) electric connection wireless transmitter (13), one of them air feed mechanism (14) that are linked together with walking actuating mechanism (4) are installed to the bottom of semicircle section of thick bamboo (1), and trigger mechanism (15) that are linked together with air feed mechanism (14) are installed to this semicircle section of thick bamboo (1), the inside of trigger mechanism (15) is equipped with magnetism and inhales subassembly (16), two piezoceramics subassembly (8) are through control mainboard (11) and magnetism and inhale subassembly (16) electric connection, tensile distortion detection mechanism (17) are installed jointly to the top of removal fixture (3) and cable main part (2).
2. The bridge cable stretching resonance detection device according to claim 1, wherein the movable clamping mechanism (3) comprises two half supporting sleeves (31) sleeved on the outer side of the cable main body (2), movable electric push rods (32) are fixedly inserted into the side walls of the two half supporting sleeves (31), fixed clamping sleeves (33) are fixedly installed at the output ends of the two movable electric push rods (32), and the inner walls of the two fixed clamping sleeves (33) are propped against the side walls of the cable main body (2).
3. The bridge guy cable stretching resonance detection device according to claim 2, wherein the travelling driving mechanism (4) comprises two extending parts (41) which are integrally formed on the outer side wall of the semi-cylinder (1), the two extending parts (41) on the same side are fixedly connected with an air cylinder (42) and a magnetism isolating cylinder (43) in a plugging mode, piston columns (44) are slidably arranged in the two air cylinders (42), the end portions of the piston columns (44) are fixedly connected with the bottom of the same-side semi-supporting sleeve (31), air inlet pipes (45) are fixedly connected to the bottoms of the two air cylinders (42), air outlet holes (46) are formed in the side walls of the two air cylinders (42), first normally closed electromagnetic valves (47) which are electrically connected with the control main board (11) are mounted in the two air outlet holes (46), magnetism isolating cylinders (43) are slidably provided with magnetism isolating cylinders (48), first electromagnets (49) are fixedly mounted at the lower ends of the magnetism isolating cylinders (48) and the inner bottoms of the magnetism isolating cylinders (43), and the tops of the magnetism isolating cylinders (48) are fixedly connected with the same-side semi-supporting sleeve (31).
4. A bridge guy cable stretching resonance detection device according to claim 3, wherein the air supply mechanism (14) comprises an air box (141) fixedly installed at the bottom of one of the semi-cylinders (1), an air pump (142) is fixedly installed at the bottom of the other semi-cylinder (1), the output end of the air pump (142) is communicated with the air box (141), two air outlet pipes (143) are fixedly inserted into the side wall of the air box (141), normally open electromagnetic valves (144) electrically connected with the control main board (11) are installed in the two air outlet pipes (143), and the two air outlet pipes (143) are communicated with the same-side air inlet pipe (45).
5. The bridge cable stretching resonance detection device according to claim 4, wherein the triggering mechanism (15) comprises a fixed sleeve (151) fixedly inserted into the end face of the air box (141), an insulating cylinder (152) is fixedly installed inside the fixed sleeve (151), a second normally closed electromagnetic valve (153) electrically connected with the control main board (11) is installed inside the fixed sleeve (151), a plurality of conductive sleeves (154) are fixedly installed on the inner wall of the insulating cylinder (152), a conductive ring (155) matched with the conductive sleeves (154) is movably arranged inside the insulating cylinder (152), a plurality of heat insulation groove blocks (156) are fixedly inserted into the outer side wall of the insulating cylinder (152), electric heating columns (157) electrically connected with the corresponding conductive sleeves (154) and the conductive ring (155) are fixedly installed at the end portions of the heat insulation groove blocks (156), thermistors (158) are fixedly installed in grooves of the heat insulation groove blocks (156), the outer side walls of the insulating cylinder (152) are fixedly installed with the second electromagnetic switches (159) electrically connected with the second electromagnetic switches (11) electrically connected with the control main board (158).
6. The bridge guy cable stretching resonance detection device according to claim 5, wherein the magnetic attraction assembly (16) comprises an insulating rod (161) arranged inside an insulating cylinder (152), the conducting ring (155) fixing sleeve (151) is arranged on the outer side of the insulating rod (161), a T-shaped iron core (162) is fixedly arranged at the top of the insulating rod (161), a non-magnetic spring (163) is fixedly arranged between the T-shaped iron core (162) and the inner wall of the insulating cylinder (152), and a second electromagnet (164) is fixedly arranged on the upper side inside the insulating cylinder (152).
7. The bridge cable stretching resonance detection device according to claim 6, wherein the stretching and twisting detection mechanism (17) comprises an infrared range finder (171) fixedly arranged at the top of one of the half supporting sleeves (31), a mounting disc (172) is connected to an upper side anchoring end outer side wall fixing sleeve (151) of the cable main body (2), a frustum (173) corresponding to the infrared range finder (171) in position is fixedly arranged at the bottom of the mounting disc (172), a plurality of reflecting sheets (174) are fixedly arranged on the outer side wall of the frustum (173), and a shading sleeve (175) is fixedly arranged at the lower end of the mounting disc (172).
8. The bridge guy stretching resonance detection device according to claim 5, wherein the upper end of the fixing sleeve (151) extends to the inside of the same side semi-cylinder (1), and the air box (141) is communicated with the same side semi-cylinder (1) through the fixing sleeve (151).
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