CN110617878A - Railway contact net vibration frequency detection device - Google Patents
Railway contact net vibration frequency detection device Download PDFInfo
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- CN110617878A CN110617878A CN201911050219.1A CN201911050219A CN110617878A CN 110617878 A CN110617878 A CN 110617878A CN 201911050219 A CN201911050219 A CN 201911050219A CN 110617878 A CN110617878 A CN 110617878A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
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Abstract
The invention relates to a vibration frequency detection device for a railway contact network, which has the characteristics of exquisite structural design, simplicity in operation and strong universality, can efficiently and accurately realize vibration detection of the contact network, and is greatly convenient for workers to pertinently maintain or protect the abnormal part of the vibration frequency of the contact network, so that the defects of the existing vibration detection technology for the railway contact network are overcome, and important reference values are provided for improving the detection efficiency of the electrified railway contact network and the development of the detection technology for the railway contact network in the future.
Description
Technical Field
The invention relates to a vibration frequency detection device for a railway contact network, and belongs to the technical field of railway contact network detection.
Background
The railway plays a very important role in the traffic system of China, is responsible for double tasks of passenger transport and freight transport, and makes important contribution to the national economic construction and social development. With the continuous development of the high-speed railway network, how to ensure the safe and stable operation of the high-speed railway becomes the focus of attention of people, so the research on the safety detection and maintenance of the high-speed railway equipment becomes a new task to be urgently broken through, and the contact network is naturally and more concerned as an important component of the railway equipment. However, the working environment of the overhead contact system is particularly harsh, and the overhead contact system is arranged at a specific position along the rail line, so that the overhead contact system is inconvenient to monitor and maintain, and becomes the weakest part of the electrified railway system.
Nowadays, fault diagnosis technology taking equipment state detection technology as a leading factor is mature and clearly divided, and the content mainly comprises vibration state detection technology, infrared thermal imaging technology, ultrasonic identification technology and the like. The vibration state detection technology is the most common and effective method, and because the mass of the overhead line system, the train running speed, the weather change and other factors are uncertain greatly, and the overhead line system does not have fixed amplitude, period and phase position, the measured results are different under different environmental test conditions, so that the vibration of the overhead line system becomes a complex random vibration. The frequency is one of basic elements for describing the vibration characteristics of the system, and in order to reflect the vibration characteristics of the overhead contact system in different states, the detection work of the vibration frequency of the railway overhead contact system is required, but the existing detection method for the overhead contact system is complex in structure and relatively narrow in detection range.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the railway contact net vibration frequency detection device, which can efficiently and accurately realize contact net vibration detection, greatly facilitate workers to maintain or protect the abnormal part of the contact net vibration frequency, and provide important reference values for improving the electrified railway contact net detection efficiency and the development of railway contact net detection technology in the future.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a vibration frequency detection device for a railway contact network, which comprises a bottom plate, a suspension driving device, a first suspension driven device, a second suspension driven device, a control system module, a mobile system module, a wireless remote controller, an eddy current displacement sensor, terminal equipment and a power supply, wherein the bottom plate is provided with a first suspension driving device;
the bottom plate is suspended below a contact line of a railway contact network through a suspension driving device, a first suspension driven device and a second suspension driven device, and the butt joint positions of the first suspension driven device and the second suspension driven device with the bottom plate are distributed at diagonal positions on the surface of the bottom plate;
the control system module, the mobile system module, the eddy current displacement sensor and the power supply are fixedly arranged on the bottom plate, and the power supply is respectively in butt joint with the control system module, the mobile system module and the eddy current displacement sensor to supply power; the mobile system module is communicated with the wireless remote controller based on a wireless communication network, and the output end of the mobile system module is in butt joint with the suspension driving device; the mobile system module controls the suspension driving device to work and drives the bottom plate to move along the direction of the contact line based on the instruction of the wireless remote controller;
the output end of the eddy current displacement sensor is in butt joint with the control system module, the eddy current displacement sensor is used for measuring vibration signals corresponding to the contact wires and uploading the vibration signals to the control system module, and the control system module is in communication with the terminal equipment based on a wireless communication network to realize the transmission of the contact wire vibration signals received by the control system module to the terminal equipment.
As a preferred technical scheme of the invention: the structure of the first suspension driven device and the structure of the second suspension driven device are the same, each suspension driven device respectively comprises a side support frame and a driven pulley, one end of the side support frame in each suspension driven device is fixedly butted with the edge of the bottom plate, the support frames at the two sides are respectively butted with the edge of the bottom plate and distributed at the diagonal position of the surface of the bottom plate, and the support frames at the two sides are positioned at the same side of the surface of the bottom plate; driven pulleys in each suspension driven device are respectively and movably arranged on the side surface of the other end of the corresponding side support frame, the surfaces of the chutes on the driven pulleys are coplanar with each other, and the driven pulleys rotate freely;
the suspension driving device comprises a main supporting frame, a driving pulley and a driving motor, wherein one end of the main supporting frame is fixedly butted with the edge of the bottom plate, the main supporting frame is positioned at the midpoint position between the butted positions of the supporting frames at the two sides and the edge of the bottom plate, and the main supporting frame and the supporting frames at the two sides are positioned at the same side of the surface of the bottom plate; the driving pulley is movably arranged on the side face of the other end of the main support frame, the face where the sliding chute of the driving pulley is located and the face where the sliding chute of the two driven pulleys are located are coplanar, the straight line where the central shaft of the driving pulley is located is coplanar with the straight line where the central shafts of the two driven pulleys are located, and the driving pulley is located at the center position between the connecting lines of the two driven pulleys; the driving motor is fixedly arranged on the other side of the main support frame, which is opposite to the side surface of the end part of the driving pulley, and a driving rod of the driving motor is in butt joint with the driving pulley and drives and controls the driving pulley; the sliding chute of the driving pulley in the suspension driving device and the sliding chute of the driven pulley in each suspension driven device are erected on the same contact line of a railway contact network, and the bottom plate is suspended below the contact line;
the output end of the mobile system module is in butt joint with a driving motor in the suspension driving device, the mobile system module controls the driving motor to work based on an instruction of the wireless remote controller, and the driving motor drives the driving pulley to rotate to realize the movement of the bottom plate along the direction of the contact line.
As a preferred technical scheme of the invention: the structure of the first hanging driven device and the second hanging driven device respectively comprise side rods and wire clamping clamps, wherein in each hanging driven device, one end of each side rod is fixedly butted with the side surface of the end part of the side supporting frame arranged on the corresponding driven pulley, the wire clamping clamps are arranged on the corresponding side rods, and each wire clamping clamp consists of two arc-shaped pieces which are opposite to each other and movably opened and closed; based on the same contact line of the railway contact net, the sliding groove of the driving pulley in the suspension driving device and the sliding groove of the driven pulley in each suspension driven device are erected, and two arc-shaped parts opposite to each other on the wire clamping clamp in each suspension driven device are closed and movably sleeved on the contact line.
As a preferred technical scheme of the invention: the mobile system module comprises a wireless controller module and a motor driving module, and the power supply supplies power to each module in the mobile system module; the input end of the motor driving module is in butt joint with the output end of the wireless controller module, the output end of the motor driving module is in butt joint with a driving motor in the suspension driving device, and the wireless controller module is in mutual communication with the wireless remote controller based on a wireless communication network.
As a preferred technical scheme of the invention: the mobile system module further comprises an encoder, and a signal feedback end of the motor driving module is connected with the encoder in series and is connected with a feedback signal receiving end of the wireless controller module in a butt joint mode.
As a preferred technical scheme of the invention: the control system module comprises a data microprocessor module, a detection signal receiving module and a wireless communication module, and the power supply supplies power to each module in the control system module; the detection signal output end of the eddy current displacement sensor is in butt joint with the input end of the detection signal receiving module, the output end of the detection signal receiving module is in butt joint with the data microprocessor module, meanwhile, the data microprocessor module is in butt joint with the wireless communication module, and the data microprocessor module is in mutual communication with the terminal equipment through the wireless communication module based on a wireless communication network.
As a preferred technical scheme of the invention: the detection signal receiving module comprises a signal amplifying module, a signal filtering module and a rectifying circuit in series in sequence from the input end of the detection signal receiving module, and the output end of the rectifying circuit is in butt joint with the data microprocessor module.
As a preferred technical scheme of the invention: the control system module also comprises an alarm module connected with the data microprocessor module.
As a preferred technical scheme of the invention: the control system module also comprises a display module connected with the data microprocessor module.
As a preferred technical scheme of the invention: the wireless controller module in the mobile system module and the data microprocessor module in the control system module are communicated with each other.
Compared with the prior art, the railway contact net vibration frequency detection device adopting the technical scheme has the following technical effects:
the vibration frequency detection device for the railway contact network has the characteristics of exquisite structural design, simplicity in operation and strong universality, can efficiently and accurately realize vibration detection of the contact network, and is greatly convenient for workers to pertinently maintain or protect the abnormal part of the vibration frequency of the contact network, so that the defects of the existing vibration detection technology for the railway contact network are overcome, and important reference values are provided for improving the detection efficiency of the electrified railway contact network and the development of the detection technology for the railway contact network in the future.
Drawings
FIG. 1 is a schematic diagram of an application structure of a vibration frequency detection device of a railway contact network designed by the invention;
FIG. 2 is a schematic structural diagram of a bottom plate and a suspension device in the vibration frequency detection device of the railway contact network designed by the invention;
FIG. 3 is a schematic block diagram of a vibration frequency detection device of a railway catenary according to the invention;
FIG. 4 is a schematic block diagram of an eddy current displacement sensor in the vibration frequency detection device of the railway contact network according to the present invention;
fig. 5 is a specific schematic diagram of a detection signal receiving module in the device for detecting the vibration frequency of the railway catenary according to the invention.
The system comprises a base plate 1, an eddy current displacement sensor 2, a terminal device 3, a power supply 4, a side support frame 5, a driven pulley 6, a main support frame 7, a driving pulley 8, a driving motor 9, a side lever 10 and a wire clamping clamp 11.
Detailed Description
The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.
The invention designs a vibration frequency detection device for a railway contact network, which comprises a bottom plate 1, a suspension driving device, a first suspension driven device, a second suspension driven device, a control system module, a mobile system module, a wireless remote controller, an eddy current displacement sensor 2, a terminal device 3 and a power supply 4 in practical application as shown in figure 1.
The bottom plate 1 is suspended below a contact line of a railway contact network through a suspension driving device, a first suspension driven device and a second suspension driven device, and the first suspension driven device and the second suspension driven device are respectively distributed on diagonal positions on the surface of the bottom plate 1 in an abutting joint mode with the bottom plate 1.
In practical application, as shown in fig. 2, the first suspension driven device and the second suspension driven device have the same structure, each suspension driven device respectively comprises a side support frame 5 and a driven pulley 6, one end of each side support frame 5 in each suspension driven device is fixedly butted on the edge of the bottom plate 1 in a riveting manner, the support frames 5 on two sides are respectively butted on the edge of the bottom plate 1 and distributed on the diagonal positions of the surface of the bottom plate 1, and the support frames 5 on two sides are positioned on the same side of the surface of the bottom plate 1; the driven pulleys 6 in each suspension driven device are respectively and movably arranged on the side surface of the other end of the corresponding side support frame 5, the surfaces of the sliding grooves on the driven pulleys 6 are coplanar, and the driven pulleys 6 can freely rotate.
As shown in fig. 2, the suspension driving device includes a main supporting frame 7, a driving pulley 8 and a driving motor 9, wherein one end of the main supporting frame 7 is fixedly butted on the edge of the bottom plate 1 by riveting, and the main supporting frame 7 is butted with the edge of the bottom plate 1, is located at a midpoint position between the butted positions of the supporting frames 5 at two sides and the edge of the bottom plate 1, and is located at the same side of the surface where the bottom plate 1 is located as the main supporting frame 7 and the supporting frames 5 at two sides; the driving pulley 8 is movably arranged on the side surface of the other end of the main support frame 7, the surface of the driving pulley 8 where the sliding chutes are located and the surface of the two driven pulleys 6 where the sliding chutes are located are coplanar, the straight line where the central shaft of the driving pulley 8 is located and the straight line where the central shafts of the two driven pulleys 6 are located are coplanar, and the driving pulley 8 is located at the center position between the connecting lines of the two driven pulleys 6; the driving motor 9 is fixedly arranged on the other side of the main supporting frame 7, which is opposite to the side surface of the end part of the driving pulley 8, and a driving rod of the driving motor 9 is in butt joint with the driving pulley 8 to drive and control the driving pulley 8; the sliding groove of the driving pulley 8 in the suspension driving device and the sliding groove of the driven pulley 6 in each suspension driven device are erected on the same contact line of a railway contact network, and the bottom plate 1 is suspended below the contact line.
The structure of the first hanging driven device and the second hanging driven device respectively comprise side rods 10 and wire clamping clamps 11, wherein in each hanging driven device, one end of each side rod 10 is fixedly butted with the side surface of the end part of a side supporting frame 5 arranged on the corresponding driven pulley 6, the wire clamping clamps 11 are arranged on the corresponding side rods 10, and each wire clamping clamp 11 consists of two arc-shaped parts which are opposite to each other and movably opened and closed; as shown in figure 1, based on the fact that the sliding groove of the driving pulley 8 in the suspension driving device and the sliding groove of the driven pulley 6 in each suspension driven device are erected on the same contact line of a railway contact network, two arc-shaped parts opposite to each other on the wire clamping clamp 11 in each suspension driven device are closed and movably sleeved on the contact line, and when the detection device is designed to move along the contact line, the detection device can be prevented from accidentally falling when moving.
The structure adopts a combination form of a cable car type structure and a composite pulley structure, and the structure has small resistance and reduces the overcoming of frictional resistance, so that the detection device can move more stably on a contact line.
The output end of the mobile system module is in butt joint with a driving motor 9 in the suspension driving device, the mobile system module controls the driving motor 9 to work based on the instruction of the wireless remote controller, and the driving motor 9 drives the driving pulley 8 to rotate to realize the movement of the bottom plate 1 along the direction of the contact line.
In practical application, as shown in fig. 3, the mobile system module includes a wireless controller module, a motor driving module and an encoder, and the power supply 4 supplies power to each module in the mobile system module; the input end of the motor driving module is in butt joint with the output end of the wireless controller module, the output end of the motor driving module is in butt joint with a driving motor 9 in the suspension driving device, the signal feedback end of the motor driving module is in serial connection with the encoder and is in butt joint with the feedback signal receiving end of the wireless controller module, and the wireless controller module is in mutual communication with the wireless remote controller based on a wireless communication network.
The control system module, the mobile system module, the eddy current displacement sensor 2 and the power supply 4 are fixedly arranged on the bottom plate 1, and the power supply 4 is respectively connected with the control system module, the mobile system module and the eddy current displacement sensor 2 for supplying power; the mobile system module is communicated with the wireless remote controller based on a wireless communication network, and the output end of the mobile system module is in butt joint with the suspension driving device; the mobile system module controls the suspension driving device to work and drives the bottom plate 1 to move along the direction of the contact line based on the instruction of the wireless remote controller.
The output end of the eddy current displacement sensor 2 is connected with the control system module in a butt joint mode, the eddy current displacement sensor 2 is used for measuring vibration signals of corresponding contact wires and uploading the vibration signals to the control system module, and the control system module is communicated with the terminal equipment 3 based on a wireless communication network to achieve the purpose that the contact wire vibration signals received by the control system module are sent to the terminal equipment 3.
In practical application, as shown in fig. 3, the control system module includes a data microprocessor module, a detection signal receiving module, a wireless communication module, an alarm module, and a display module, and the power supply 4 supplies power to each module in the control system module; the detection signal output end of the eddy current displacement sensor 2 is in butt joint with the input end of the detection signal receiving module, the output end of the detection signal receiving module is in butt joint with the data microprocessor module, meanwhile, the data microprocessor module is in butt joint with the alarm module, the wireless communication module and the display module respectively, and the data microprocessor module is in mutual communication with the terminal equipment 3 through the wireless communication module and based on a wireless communication network.
In the design application, the wireless controller module in the mobile system module and the data microprocessor module in the control system module are communicated with each other, so that the data microprocessor module in the control system module can acquire and detect the control information of the mobile system module.
The internal structure of the eddy current displacement sensor 2 is shown in fig. 4, when the contact network wire vibrates, the generated vibration signal is detected by the eddy current detection probe coil, and when the oscillator in the pre-set generates an alternating magnetic field and reaches an induction distance along with the object to be detected, a corresponding electromagnetic force is generated due to the electromagnetic effect, so as to push the detection magnet to generate displacement. Because the distance between the detection magnet and the reference magnet is changed, the acting force generated by the reference magnet can act on the elastic element, when the elastic element is acted by electromagnetic force and transmits the deformation to the piezoelectric ceramic sheet, the elastic element drives the piezoelectric ceramic sheet to vibrate, the electric dipole moment in the sheet can be compressed and shortened due to the positive piezoelectric effect, so that equal positive and negative charges can be generated on the opposite surfaces of the materials, the piezoelectric ceramic sheet can generate continuous alternating current signals due to the positive piezoelectric effect, the waveform approaches to a sine wave, and finally, the generated electric signals are input to the detection signal receiving module for data processing.
The detection signal receiving module is designed to be connected in series with a signal amplifying module, a signal filtering module and a rectifying circuit in sequence from the input end thereof as shown in fig. 5, and the output end of the rectifying circuit is connected with the data microprocessor module in a butt joint mode. In practical application, a detection signal from the eddy current displacement sensor 2 is subjected to signal amplification processing and signal filtering processing in sequence, then full-wave rectification is performed through a bridge rectifier circuit to form unidirectional pulsating current, meanwhile, the unidirectional pulsating current is input to a base electrode of an NPN triode, in addition, a collector electrode of the NPN triode is connected to an external interrupt interface of a data microprocessor module, and an emitter electrode of the NPN triode is grounded. Because the unidirectional pulsating current rises along with the rise of the voltage, when the voltage of the unidirectional pulsating current exceeds the conducting voltage of the NPN triode, the NPN triode is started, otherwise, the NPN triode is closed, and therefore a switching circuit is formed. And finally, measuring the switching times of the NPN triode in 1s by using the external interrupt function of the data microprocessor module, wherein the measured value is the measured vibration frequency value.
In specific application, the data microprocessor module is responsible for data processing of the whole detection system and control of each module; the display module, namely the display, is to finish the numerical value display to the vibration frequency measured; the alarm module, such as selecting the buzzer, is that when the detection device meets the trouble and causes the motor to be unusual on the contact network, the buzzer sends out the police dispatch newspaper, and alarm signal can be passed to staff's terminal equipment 3 on, on the smart mobile phone promptly, go forward in time by the staff and handle. For wireless remote controllers in wireless communication with the mobile system module, infrared wireless signals can be designed and applied among the wireless remote controllers, the wireless remote controllers adopt infrared wireless remote controllers, buttons of the infrared wireless remote controllers are respectively provided with functions of advancing, retreating, starting, pausing and the like, a tester can control the advancing and retreating of the mobile system module and the starting and stopping of the detection equipment through the infrared wireless remote controllers, namely the tester can control the movement of the detection device on a contact line, and the effective operating distance controlled by the infrared signals is 20 m. For the wireless communication module in the control system module, the bluetooth wireless communication module is designed and applied, and is used for the data microprocessor module in the control system module to realize bluetooth wireless communication with the terminal device 3, in practical application, the bluetooth wireless communication module comprises a bluetooth master module and a bluetooth slave module, and mainly uses a serial communication mode to transmit data to be transmitted outwards in sequence one by one, and sets a fixed time length for each bit of data, so that information exchange between systems can be realized only by a few lines, and further, the wireless transmission of the system data is completed.
The device for detecting the vibration frequency of the railway contact network designed by the technical scheme has the characteristics of exquisite structural design, simplicity in operation and strong universality, can efficiently and accurately realize vibration detection of the contact network, is greatly convenient for workers to pertinently maintain or protect the abnormal part of the vibration frequency of the contact network, overcomes the defects of the existing railway contact network vibration detection technology, and provides important reference value for improving the detection efficiency of the electrified railway contact network and the development of the railway contact network detection technology in the future.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The utility model provides a railway contact net vibration frequency detection device which characterized in that: the system comprises a bottom plate (1), a suspension driving device, a first suspension driven device, a second suspension driven device, a control system module, a mobile system module, a wireless remote controller, an eddy current displacement sensor (2), terminal equipment (3) and a power supply (4);
the railway contact line suspension system comprises a bottom plate (1), a first suspension driven device, a second suspension driven device, a first suspension driving device, a second suspension driven device, a first suspension driven device and a second suspension driven device, wherein the first suspension driven device and the second suspension driven device are respectively in butt joint with the bottom plate (1) and are distributed at diagonal positions on the surface of the bottom plate (1);
the control system module, the mobile system module, the eddy current displacement sensor (2) and the power supply (4) are fixedly arranged on the bottom plate (1), and the power supply (4) is respectively in butt joint with the control system module, the mobile system module and the eddy current displacement sensor (2) for supplying power; the mobile system module is communicated with the wireless remote controller based on a wireless communication network, and the output end of the mobile system module is in butt joint with the suspension driving device; the mobile system module controls the suspension driving device to work and drives the bottom plate (1) to move along the direction of the contact line based on the instruction of the wireless remote controller;
the output end of the eddy current displacement sensor (2) is connected with the control system module in a butt joint mode, the eddy current displacement sensor (2) is used for measuring vibration signals of corresponding contact wires and uploading the vibration signals to the control system module, the control system module is communicated with the terminal equipment (3) based on a wireless communication network, and the contact wire vibration signals received by the control system module are sent to the terminal equipment (3).
2. The device for detecting the vibration frequency of the railway overhead line system according to claim 1, wherein: the structure of the first suspension driven device is the same as that of the second suspension driven device, each suspension driven device respectively comprises a side support frame (5) and a driven pulley (6), one end of each side support frame (5) in each suspension driven device is fixedly butted with the edge of the bottom plate (1), the support frames (5) on the two sides are respectively butted with the edge of the bottom plate (1) and distributed on the diagonal position of the surface of the bottom plate (1), and the support frames (5) on the two sides are positioned on the same side of the surface of the bottom plate (1); driven pulleys (6) in each suspension driven device are respectively and movably arranged on the side surface of the other end of the corresponding side support frame (5), the surfaces of sliding grooves on the driven pulleys (6) are coplanar, and the driven pulleys (6) rotate freely;
the suspension driving device comprises a main supporting frame (7), a driving pulley (8) and a driving motor (9), wherein one end of the main supporting frame (7) is fixedly butted with the edge of the bottom plate (1), the main supporting frame (7) is positioned at the midpoint position between the butted positions of the two side supporting frames (5) and the edge of the bottom plate (1), and the main supporting frame (7) and the two side supporting frames (5) are positioned on the same side of the surface of the bottom plate (1); the driving pulley (8) is movably arranged on the side face of the other end of the main support frame (7), the face where the sliding chute of the driving pulley (8) is located and the face where the sliding chute of the two driven pulleys (6) are located are coplanar, the straight line where the central shaft of the driving pulley (8) is located and the straight line where the central shaft of the two driven pulleys (6) is located are coplanar, and the driving pulley (8) is located at the central position between the connecting lines of the two driven pulleys (6); the driving motor (9) is fixedly arranged on the other side of the main supporting frame (7) relative to the side face of the end part of the driving pulley (8), and a driving rod of the driving motor (9) is in butt joint with the driving pulley (8) to drive and control the driving pulley (8); the sliding groove of a driving pulley (8) in the suspension driving device and the sliding groove of a driven pulley (6) in each suspension driven device are erected on the same contact line of a railway contact network, and the bottom plate (1) is suspended below the contact line;
the output end of the mobile system module is in butt joint with a driving motor (9) in the suspension driving device, the mobile system module controls the driving motor (9) to work based on an instruction of a wireless remote controller, and the driving motor (9) drives the driving pulley (8) to rotate to realize the movement of the bottom plate (1) along the direction of the contact line.
3. The device for detecting the vibration frequency of the railway overhead line system according to claim 2, wherein: the structure of the first hanging driven device and the second hanging driven device respectively comprise side rods (10) and wire clamping clamps (11), wherein in each hanging driven device, one end of each side rod (10) is fixedly butted with the side surface of the end part of the side supporting frame (5) arranged on the corresponding driven pulley (6), each wire clamping clamp (11) is arranged on the corresponding side rod (10), and each wire clamping clamp (11) consists of two arc-shaped parts which are opposite to each other and movably opened and closed; based on the same contact line of the railway contact net erected by the sliding groove of the driving pulley (8) in the suspension driving device and the sliding groove of the driven pulley (6) in each suspension driven device, two arc-shaped parts opposite to each other on the wire clamping clamp (11) in each suspension driven device are closed and movably sleeved on the contact line.
4. The device for detecting the vibration frequency of the railway overhead line system according to claim 3, wherein: the mobile system module comprises a wireless controller module and a motor driving module, and the power supply (4) supplies power to each module in the mobile system module; the input end of the motor driving module is in butt joint with the output end of the wireless controller module, the output end of the motor driving module is in butt joint with a driving motor (9) in the suspension driving device, and the wireless controller module is in mutual communication with the wireless remote controller based on a wireless communication network.
5. The device for detecting the vibration frequency of the railway overhead line system according to claim 4, wherein: the mobile system module further comprises an encoder, and a signal feedback end of the motor driving module is connected with the encoder in series and is connected with a feedback signal receiving end of the wireless controller module in a butt joint mode.
6. The device for detecting the vibration frequency of the railway overhead line system according to claim 5, wherein: the control system module comprises a data microprocessor module, a detection signal receiving module and a wireless communication module, and the power supply (4) supplies power to each module in the control system module; the detection signal output end of the eddy current displacement sensor (2) is in butt joint with the input end of the detection signal receiving module, the output end of the detection signal receiving module is in butt joint with the data microprocessor module, meanwhile, the data microprocessor module is in butt joint with the wireless communication module, and the data microprocessor module is in mutual communication with the terminal equipment (3) through the wireless communication module based on a wireless communication network.
7. The device for detecting the vibration frequency of the railway overhead line system of claim 6, wherein: the detection signal receiving module comprises a signal amplifying module, a signal filtering module and a rectifying circuit in series in sequence from the input end of the detection signal receiving module, and the output end of the rectifying circuit is in butt joint with the data microprocessor module.
8. The device for detecting the vibration frequency of the railway overhead line system of claim 6, wherein: the control system module also comprises an alarm module connected with the data microprocessor module.
9. The device for detecting the vibration frequency of the railway overhead line system of claim 6, wherein: the control system module also comprises a display module connected with the data microprocessor module.
10. The device for detecting the vibration frequency of the railway contact net is characterized by comprising the following components in parts by weight according to any one of claims 6 to 9: the wireless controller module in the mobile system module and the data microprocessor module in the control system module are communicated with each other.
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