Top sealing net traction pulley wireless speed measuring device and use method thereof

Abstract

The invention discloses a wireless speed measuring device for a traction pulley of a capping net. The wireless speed measuring device is used for measuring and displaying a real-time moving speed value of the traction pulley. The wireless speed measurement device for the topping net traction pulley comprises an annular magnet array, a wireless speed measurement unit and a host, the invention further discloses a using method of the wireless speed measuring device for the traction tackle of the capping net, compared with the prior art, the wireless speed measuring device transmits the measured real-time moving speed value of the traction tackle to a construction commander and a plurality of motorized winching operators through a wireless channel, and the construction commander and the motorized winching operators can carry out wireless speed measurement on the traction tackle of the capping net. A commander and a winching machine operator can accurately control the traction speed of the motorized winching machine according to the same quantitative speed value, it is ensured that a top sealing net is subjected to balanced traction force, and the efficiency and safety of net sealing operation are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission line engineering construction, and in particular relates to a wireless speed measuring device for a capping net traction pulley and a use method thereof. Background Art

[0002] When a transmission line crosses other transmission lines, high-speed railways and other electrified railways for line construction, reliable safety protection measures need to be taken to effectively protect the safety of the objects being crossed, ensure the stability of power supply, and avoid power outages and outages. The safety protection measures mainly include setting up crossing frames and safety protection nets, that is, setting up a safety protection net of a certain width at a safe distance above the lines and facilities being crossed. This protection net is also called a "capping net". This kind of protection net has sufficient strength and impact resistance, and can reliably support the wires in the event of an accident in which the wires accidentally fall during the line construction process, effectively protecting the objects being crossed.

[0003] The following is combined with Figure 1-4 The relevant technology is described. In the prior art, for the construction of transmission line crossing with a large span, a suspension cable crossing frame and a suspension cable sealing device are usually used. Typical devices are as follows Figure 1-2 . A longer steel arm crossbeam 01 is installed on the towers at both ends of the span. The crossbeam 01 is reinforced with steel wire ropes to form a spanning frame. Each phase of the newly deployed conductor corresponds to two load-bearing ropes (also known as main ropes 03) and a capping net 04. The two load-bearing ropes that support the capping net 04 are made of lightweight and high-strength Dyneema ropes. The tension is adjusted by a hand hoist 08 and anchored to the steel plate anchor 06 buried underground. The capping net 04 is generally composed of a traction pulley 09, a capping net pulley 010, a connecting rope 7, a net rope 5, an insulating support rod 4, and a traction rope 02. See Figure 3. All ropes must have good insulation properties to prevent the transmission line or railway contact net below from generating induced electricity. The traction ropes 02 in front and behind the capping net 04 are pulled by the motorized capstan 07 on the ground, and the motorized capstan 07 is anchored to the steel plate anchor 06 buried underground. The traction rope 02 in front of the capping net 04 plays a traction role, pulling the entire capping net 04 to the top of the object being crossed during the closing process; the traction rope 02 behind the capping net 04 has a little tension to prevent the rope from being too loose and keep a safe distance between the rope and the object being crossed. During the closing process, the front and rear traction ropes 02 interchange their roles. The capping net 04 is controlled by two motorized capstans 07 with gasoline engines in the front and rear (a total of four) to pull and close the net. The motorized capstans 07 are dispersed behind the tower. Each motorized capstan 07 is equipped with an operator to control it. This work is generally carried out during the night railway suspension window, usually only 3-4 hours of working time. The efficiency and safety of the closing net construction are crucial. The balanced pulling of the capping net 04 is very important during the pulling and closing process. If it is unbalanced, it will make the entire capping net 04 difficult or impossible to pull, and even the pulling rope 02 will be broken, which will bring safety hazards. The ideal state is that the four motorized winches 07 have the same speed, and the capping net 04 always maintains a regular rectangle and is in a balanced state during the pulling process (such as Figure 4 Left). In this state, the pulling resistance is very small. In fact, it is difficult for each motorized capstan 07 used in on-site construction to have the same model and power. In addition, it is normal for the pulling speeds to be different because they are controlled by different people. If the pulling speeds of the two motorized capstans 07 on the traction side are inconsistent, the capping net 04 will be deformed and become a diamond shape, which is in an unbalanced state (such as Figure 4 Right). In this state, the pulling resistance increases sharply, and the entire capping net 04 is difficult to pull or cannot be pulled at all. In severe cases, the traction rope 02 may be broken. The commander is required to adjust the speed of different motorized capstans 07 at any time according to the actual situation. If the unbalanced state of the capping net 04 is serious, all motorized capstans 07 must be ordered to stop and adjust the state. Only when it is normal can the pulling continue. In the prior art, the commander always stands directly below the capping net 04 during the pulling process of the capping net 04, observes with binoculars, and commands the four motorized capstan operators to control their respective traction speeds at any time through a wireless intercom, in order to maintain the overall pulling balance of the capping net 04.

[0004] The shortcomings of the existing technology are that the existing network sealing construction scheme has technical problems that cannot take into account both construction speed and construction safety, as follows:

[0005] (1) Neither the commander nor the motorized capstan operator can grasp the quantitative value of the real-time moving speed of the four traction pulleys 09 of the capping net. The commander can only issue control commands to the operators with vague words such as "slower or faster, slow traction or fast traction". As for how fast or slow it is, no one knows because there is no suitable traction speed display device. Different operators operate by feeling, which makes it difficult to achieve coordinated and balanced traction.

[0006] (2) The commander and the motorized capstan operator communicated via a radio intercom, and there was a lag in information transmission. There was at least a few seconds of delay from issuing a command to executing it, and the operator responded slowly. When the capping net moved at a fast speed, if the operator responded slowly, it would easily cause the capping net to deform too quickly, posing a safety hazard. In order to avoid such a situation and ensure the overall traction balance of the capping net and construction safety, it could only be pulled at a very slow speed. This greatly affected the construction speed of the capping net, making it difficult to ensure the construction progress. Summary of the invention

[0007] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and disclose a wireless speed measuring device for a capping net traction pulley and a method of using the same, so as to solve the technical problem that the existing capping net construction scheme cannot balance the construction speed and construction safety.

[0008] The technical solution adopted by the present invention to solve its technical problem is: a wireless speed measuring device for a capping net traction pulley, which is used to measure and display the real-time moving speed value of the traction pulley; the traction pulley includes a pulley bracket and a speed measuring pulley located on the pulley bracket, and the wireless speed measuring device for the capping net traction pulley includes: an annular magnet array, a wireless speed measuring unit and a host; the annular magnet array is located on one side of the speed measuring pulley, and the annular magnet array includes a plurality of uniformly distributed cylindrical magnets with a common center; the wireless speed measuring unit is fixedly installed on the pulley bracket; the wireless speed measuring unit includes: a Hall sensor signal processing module, a signal shaping circuit and a circuit board, and the circuit board includes a single-chip microcomputer and a wireless serial port module; the magnetic field of the annular magnet array changes to form a trigger signal acting on the Hall sensor signal processing module, and the Hall sensor signal processing module generates a pulse signal under the action of the trigger signal; the pulse signal is transmitted to the single-chip microcomputer after being post-processed by the signal shaping circuit; the single-chip microcomputer calculates the real-time moving speed value of the traction pulley according to the number of the pulse signals detected per second, and sends it to the host through the wireless serial port module for display.

[0009] The present invention also discloses a method for using a wireless speed measuring device for a capping net traction pulley, comprising the following steps:

[0010] S1, numbering and joint debugging: prepare 4 traction pulleys; at the construction site, number the four traction pulleys and assign them to corresponding motorized capstan operators; then conduct joint debugging on the wireless speed measuring unit and the host, ensure that the wireless speed measuring unit and the host are fully charged before debugging, turn on the power switches of the wireless speed measuring unit and the host respectively on the ground, manually rotate the speed measuring pulleys of different traction pulleys one by one, and ensure that the LED digital tube display corresponding to each host can display the speed data normally;

[0011] S2, installation: The construction workers will bring the traction pulley equipped with the wireless speed measuring unit to the tower, hang it on the main rope as required, turn on the power, and then start weaving the net;

[0012] S3, adjustment: after the capping net is formed, the state of the capping net is obtained through a telescope or a drone, and the capping net is first balanced. When the capping net can be observed by the on-site personnel, the commander and the operators of different mobile capstans turn on the power of their respective main machines, confirm that the speed data of each traction pulley is displayed normally, and then perform a second balance adjustment on the capping net until the capping net has a rectangular shape.

[0013] S4, pulling: the commander uses the radio intercom to issue a command to start the overall pulling, first pulling at the initial speed V0, and each motorized capstan operator slowly adds fuel according to the traction pulley moving speed value displayed on their respective main machines, so that the moving speed of the traction pulley controlled by each reaches the primary acceleration speed V1; if the deformation of the capping net exceeds the standard, the moving speed of the traction pulley is reduced until it returns to normal, and then the speed is increased for pulling; if the capping net does not deform or the deformation does not exceed the preset deformation, the commander issues a command to increase the pulling speed to the secondary acceleration speed V2; and the capping net is pulled to the designated position above the spanning object at the secondary acceleration speed V2; the net pulling operation is completed; V0<V1<V2.

[0014] Compared with the prior art, with the present invention, the wireless speed measuring device transmits the measured real-time moving speed value of the traction pulley to the construction commander and multiple motorized capstan operators through a wireless channel, so that the commander and the capstan operators can accurately control the traction speed of the motorized capstan according to the same quantified speed value, ensuring that the capping net is subjected to balanced traction force, thereby greatly improving the efficiency and safety of the capping operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The following is a front view of a typical cable-stayed span mentioned in the background technology;

[0016] Figure 2 The following is a schematic diagram of the installation of a typical cable-spanning frame and a capping net as mentioned in the background technology;

[0017] Figure 3As mentioned in the background technology: a typical capping net installation diagram;

[0018] Figure 4 The schematic diagram of the comparison between the equilibrium state and the non-equilibrium state of the capping network mentioned in the background technology;

[0019] Figure 5 The device of the present invention is: an installation diagram of a ring magnet array and a wireless speed measuring unit;

[0020] Figure 6 In the device of the present invention: a main unit installation diagram;

[0021] Figure 7 The device of the present invention is as follows: a wireless speed measuring unit and a traction pulley installation diagram;

[0022] Figure 8 In the device of the present invention: a diagram of the arrangement of an annular magnet array;

[0023] Fig. 9 In the device of the present invention: a diagram for installing a wireless speed measuring unit;

[0024] Fig.10 In the device of the present invention: a circuit board installation diagram;

[0025] Fig.11 In the device of the present invention: a flow chart of the wireless speed measuring unit program;

[0026] Fig.12 In the device of the present invention: an exploded view of a main unit;

[0027] Fig.13 For the device of the present invention: the top surface, bottom surface and isometric view of the panel;

[0028] Fig.14 In the device of the present invention: the top surface, bottom surface and isometric view of the host circuit board;

[0029] Fig.15 In the device of the present invention: a host program flow chart;

[0030] Fig.16 The method of the present invention is a schematic diagram of machining a mounting hole on an original traction pulley bracket;

[0031] Fig.17 A schematic diagram of installing an antenna base, a charging port, and a power switch on a housing in the method of the present invention;

[0032] Fig.18 A schematic diagram of installing a Hall sensor elbow to a traction pulley bracket in the method of the present invention;

[0033] Fig.19A schematic diagram of the method of the present invention: installing the housing and the battery bracket to the traction pulley bracket;

[0034] Fig. 20 A schematic diagram of the method of the present invention: installing a circuit board onto a battery pressure plate;

[0035] Fig.21 A schematic diagram of installing a battery and a battery pressing plate on a battery bracket in the method of the present invention;

[0036] Fig. 22 The method of the present invention is as follows: a schematic diagram of installing a top cover and a rubber stick antenna;

[0037] Fig.23 A schematic diagram of installing a pulley in the method of the present invention;

[0038] Fig.24 The method of the present invention is as follows: a schematic diagram of the equilibrium state of the capping network;

[0039] Fig.25 The method of the present invention is a schematic diagram of the state of the traction pulley when the capping net is pulled;

[0040] Fig.26 This is a schematic diagram of the state of the traction pulley when the capping net is closed in the method of the present invention.

[0041] Description of reference numerals:

[0042] 01. Beam; 02. Towing rope; 03. Main rope; 04. Capping net; 06. Steel plate anchor; 07. Motorized capstan; 08. Hand winch; 09. Towing pulley; 010. Net-sealing pulley; 1. Annular magnet array; 2. Wireless speed measuring unit; 4. Insulating support rod; 5. Net rope; 6. Rubber stick antenna; 7. Connecting rope; 8. Antenna base; 9. LED digital tube display; 10. Charging socket; 11. First housing; 12. Battery indicator; 13. Power switch; 14. Panel; 15. Speed ​​measuring pulley; 16. Traction pulley bracket; 17. Top cover; 18. Battery bracket; 19. Battery pressure plate; 20. Battery; 21. Circuit board; 22. Hall sensor elbow; 23. Wireless speed measuring unit mounting hole; 24. Magnet array mounting hole; 25. Elbow mounting hole; 26. DC step-down module; 27. Single chip microcomputer; 30. Wireless serial port module; 34. Signal line socket; 35. Hall sensor signal processing module; 36. Hall sensor signal line socket. DETAILED DESCRIPTION

[0043] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0044] In response to the above technical problems, the applicant analyzed the technical problems and found that the key to solving the above problems is to enable the construction commander and the motorized capstan operator to see the real-time moving speed values ​​of the four traction pulleys. In order to accurately measure the real-time moving speed of the traction pulley, a more reasonable way is to install a speed measuring device on the pulley and transmit the speed value back to the receiving end on the ground through a wireless channel for display.

[0045] In order to measure the real-time moving speed of the traction pulley of the capping net 04, ensure balanced traction, improve construction efficiency, and solve the difficult problems in the capping net construction, the present invention provides a wireless speed measuring device for the traction pulley of the capping net based on a Hall sensor, which has a simple and reliable structure, small size, light weight, and low cost, and can be easily installed after simple modification on the basis of the traction pulley. The traction pulley 09 is located at the four corners of the capping net 04. The wireless speed measuring device transmits the measured real-time moving speed value of the traction pulley to the construction commander and multiple motorized capstan operators through a wireless channel, so that the commander and the capstan operator can accurately control the traction speed of the motorized capstan 07 according to the same quantified speed value, ensure balanced traction of the capping net 04, and achieve a more efficient, flexible, and safe capping process.

[0046] The following is combined with Figure 1-26 The capping net traction pulley wireless speed measuring device of the present invention and the use method thereof are further described.

[0047] Please focus on Figure 5-9The present invention discloses a wireless speed measuring device for a capping net traction pulley, which is used to measure and display the real-time moving speed value of the traction pulley; the traction pulley 09 includes a pulley bracket and a speed measuring pulley 15 located on the pulley bracket, and the wireless speed measuring device for the capping net traction pulley includes: an annular magnet array 1, a wireless speed measuring unit 2 and a host; the annular magnet array 1 is located on one side of the speed measuring pulley 15, and the annular magnet array 1 includes a plurality of uniformly distributed cylindrical magnets with a common center; the wireless speed measuring unit 2 is fixedly installed on the pulley bracket; the wireless speed measuring unit 2 includes: a Hall sensor signal processing Module 35, signal shaping circuit and circuit board 21, circuit board 21 includes single chip microcomputer 27 and wireless serial port module 30; the magnetic field change of the annular magnet array 1 forms a trigger signal acting on the Hall sensor signal processing module 35, and the Hall sensor signal processing module 35 generates a pulse signal under the action of the trigger signal; the pulse signal is processed by the signal shaping circuit and then transmitted to the single chip microcomputer 27; the single chip microcomputer 27 calculates the real-time moving speed value of the traction pulley according to the number of pulse signals detected per second, and sends it to the host for display through the wireless serial port module 30.

[0048] In this embodiment, the annular magnet array 1 is used to provide a trigger signal to the Hall sensor signal processing module 35, and cooperate with the Hall sensor to generate a periodic pulse signal; the Hall sensor signal processing module 35 is used to detect the magnetic field changes of the annular magnet array 1; calculate the moving speed of the pulley in real time; after processing, the pulley moving speed data is formed and sent to the host for display through the wireless serial port module 30 and the antenna.

[0049] According to a specific embodiment of the present invention, the wireless speed measuring unit 2 also includes: a first housing 11, a top cover 17, a power switch 13, a charging socket 10, an antenna base 8, a battery 20, a circuit board, and a glue stick antenna 6; the circuit board also includes: a power cord socket, a Hall sensor signal line socket 36, and a DC step-down module 26.

[0050] According to a specific embodiment of the present invention, the host comprises an LED digital tube display 9, and the real-time moving speed value of the traction pulley is displayed through the LED digital tube display 9.

[0051] According to a specific embodiment of the present invention, the host includes: a second housing, a panel 14, a power switch 13, a power indicator 12, a charging socket 10, an antenna base 8, a battery 20, a host circuit board, a glue stick antenna 6 and fasteners.

[0052] According to a specific embodiment of the present invention, the wireless speed measuring unit 2 is fixedly mounted on the pulley bracket by bolts.

[0053] According to a specific embodiment of the present invention, the cylindrical magnet is bonded to the speed measuring pulley 15 by adhesive, and the speed measuring pulley 15 is a nylon speed measuring pulley.

[0054] According to a specific embodiment of the present invention, the number of the cylindrical magnets is n, where n is a natural number and n≥8, and the n cylindrical magnets are evenly arranged around the same center of a circle.

[0055] According to a specific implementation of the present invention, n=8, the diameter of the groove bottom of the speed measuring pulley 15 is 52 mm; and the pulse signal is a periodic pulse signal.

[0056] In this embodiment, the diameter of the groove bottom of the speed measuring pulley 15 is 52 mm, and its circumference is 3.14×52 mm≈163 mm, so the speed resolution is 163 mm÷8≈0.02 m, and this accuracy has fully met the needs of network sealing construction.

[0057] The working principle of the wireless speed measuring device for the capping net traction pulley of the present invention is described in detail below:

[0058] Regarding pulse detection: When the speed measuring pulley 15 where the annular magnet array 1 is located rotates, the 8 cylindrical magnets fixed on the side of the pulley pass through the Hall sensor in turn, and the Hall sensor generates a corresponding pulse signal. Every time 8 pulses are detected, it means that the pulley has completed a full circle of rotation.

[0059] Regarding data processing: the pulse signal of the Hall sensor is processed by the signal shaping circuit and then transmitted to the single chip microcomputer 27. The single chip microcomputer 27 calculates the moving speed of the traction pulley in real time according to the number of pulse signals detected per second. See formula (1).

[0060]

[0061] Where:

[0062] V: moving speed of the traction pulley, unit: m / s;

[0063] D: Diameter of the bottom of the 15-groove speed measuring pulley, unit: m;

[0064] F: the number of pulse signals detected by the single chip microcomputer 27 per second, that is, the speed of the speed measuring pulley 15, unit: pieces / s;

[0065] n: the number of magnets installed on the side of the speed measuring pulley 15, unit: piece.

[0066] Regarding wireless transmission: the pulley moving speed data calculated by the single chip microcomputer 27 is sent to the host through the wireless serial port module 30. The working mode of the wireless serial port module 30 is set to the "transparent broadcast" communication mode, that is, the serial port module of a certain wireless speed measurement unit 2 sends data, and the serial port modules with the same address and the same channel in multiple hosts can receive data at the same time. Data is sent and received in a transparent manner, and what is sent is what is received. In this way, the commander and multiple motorized capstan operators can use the same host to simultaneously receive the moving speed data of different traction pulleys.

[0067] Regarding reception and display: the host receives the moving speed data of the traction pulley through the wireless serial port module 30 and displays it in real time through the LED digital tube display 9.

[0068] The main components and functions of the wireless speed measuring device for the capping net traction pulley of the present invention are described as follows:

[0069] All connecting fasteners are standard parts.

[0070] Top cover 17: one piece. Made of cast aluminum, it is lightweight, strong and impact resistant. Connected to the housing by bolts, it has a certain waterproof performance.

[0071] Circuit board: one piece. Fig.10 . It mainly includes a power cord socket, a Hall sensor signal line socket 36, a DC step-down module 26, a Hall sensor signal processing module 35, a single-chip microcomputer, and a wireless serial port module 30. The DC step-down module 26 reduces the battery voltage for use with the single-chip microcomputer. The working mode of the wireless serial port module 30 is set to the "transparent broadcast" communication mode, that is, the serial port module of a wireless speed measurement unit 2 sends data, and the serial port modules with the same address and the same channel in multiple hosts can receive data at the same time. Data is sent and received in a transparent manner, and what is sent is what is received. The relevant electronic technology and components are already very mature, with a high degree of modularization, easy to obtain, and low cost. In addition, the functions realized by this device are relatively simple, and the working current is very small, so the circuit board can be designed to be smaller. See the program flow chart Fig.11 .

[0072] Battery pressing plate 19: one piece in total. Made of stainless steel sheet through sheet metal processing. Its function is not only to press the battery to prevent it from loosening, but also to fix the circuit board.

[0073] Battery bracket 18: 2 pieces in total. Made of stainless steel sheet through sheet metal processing. Its function is to fix the battery together with the battery pressure plate 19 to prevent it from loosening.

[0074] Casing: One piece. Made of cast aluminum, it is lightweight, strong and impact resistant. It is connected to the top cover 17 and the traction pulley bracket 16 by bolts, and has holes for connecting the power switch 13, charging port, rubber stick antenna 6, Hall sensor elbow 21 and other components, and has a certain waterproof performance.

[0075] Antenna base 8: a finished product, used to install the rubber stick antenna 6.

[0076] Glue stick antenna 6: one piece in total. Use finished product.

[0077] Charging port: one piece in total. Made of finished product, waterproof. Used to connect to lithium battery pack for charging.

[0078] Power switch 13: one piece in total. Made of finished product, waterproof. Used to control the on / off of the wireless speed measuring unit 2 circuit.

[0079] Hall sensor elbow: one piece in total. The elbow is made of thin-walled steel pipe and has a built-in Hall sensor with three lead wires and a plug. After the Hall sensor is installed in place, epoxy resin is poured into the elbow for encapsulation to prevent it from loosening. One end of the elbow with the Hall sensor is connected to the corresponding hole of the traction pulley bracket 16, so that the Hall sensor is as close to the magnet as possible to obtain good trigger sensitivity. The other end is connected to the corresponding connection hole of the casing, and the output signal of the Hall sensor is connected to the circuit board through the lead wire and the JST GH1.25mm type 3-pin plug.

[0080] Battery: One piece in total. Uses 6 18650 lithium battery packs to ensure sufficient battery life.

[0081] Host: Such as Fig.12 . There are 5 pieces in total. The commander and four motorized capstan operators each have one. It mainly includes a housing, a panel 14, a power switch 13, a power indicator 12, a charging socket 10, an antenna base 8, a battery, a host circuit board, a rubber stick antenna 6 and corresponding fasteners.

[0082] Battery indicator 12: one piece in total. Embedded installation using finished product. Used to indicate battery charge.

[0083] Power switch 13: one piece in total. Made of finished product, waterproof. Used to control the on / off of the host circuit.

[0084] Panel: See Fig.13 The high-strength plastic is used to make it light, with sufficient strength and impact resistance. It is connected to the housing, circuit board, and power switch 13 by bolts, and holes are also opened on it for connecting components such as the power indicator 12, the power switch 13, the LED digital tube display 9, the charging interface, and the rubber stick antenna 6, and it has a certain waterproof performance.

[0085] Host circuit board: one piece in total. Fig.14. It mainly includes a DC step-down module 26, a single-chip microcomputer, a 4-channel wireless serial port module 30, a 4-channel LED digital tube display 9 display system and other parts. The DC step-down module 26 reduces the battery voltage for use with the single-chip microcomputer. The working mode of the wireless serial port module 30 is set to the "transparent broadcast" communication mode, that is, the serial port module of a wireless speed measurement unit 2 sends data, and the serial port modules with the same address and the same channel in multiple hosts can receive data at the same time. The data is sent and received in a transparent manner, and what is sent is what is received. The relevant electronic technology and components are already very mature, with a high degree of modularization, easy to obtain, and low cost. The single-chip microcomputer can use STM32F103RET6, which has 5 serial ports. Because the signal transmission distance of the device in actual construction is within 1 kilometer, and the wireless speed measurement unit 2 is located at a high altitude, there are no obstructions in the wireless signal transmission path, and the wireless serial port module 30 uses a power of 100m W (The serial port modules of the host and the wireless speed measurement unit are of the same model), see the program flow chart Fig.15 .

[0086] Battery: One piece in total. The thinner polymer lithium battery pack is used, so that the case can be designed to be lighter and have sufficient endurance.

[0087] Rubber stick antenna 6: four pieces in total. Use finished products. Used to receive signals from four traction pulley wireless speed measurement units 2.

[0088] Antenna base 8: a finished product, used to install the rubber stick antenna 6.

[0089] Charging port: one piece in total. Made of finished product, waterproof. Used to connect to lithium battery pack for charging.

[0090] Casing: One piece. Made of high-strength plastic to make it lightweight, with sufficient strength and impact resistance. Connected to panel 14 by bolts, with holes for connecting charging port, antenna base 8 and other components, with certain waterproof performance. Connected to panel 14 by bolts.

[0091] The present invention also discloses a method for using the wireless speed measuring device for the capping net traction pulley as described above, comprising the following steps:

[0092] S1, numbering and joint debugging: prepare 4 traction pulleys 09; at the construction site, number the four traction pulleys 09 and assign them to the corresponding motorized capstan operators; then conduct joint debugging on the wireless speed measuring unit 2 and the main machine. Before debugging, ensure that the wireless speed measuring unit 2 and the main machine have sufficient power. Turn on the power switches 13 of the wireless speed measuring unit 2 and the main machine on the ground respectively, and manually rotate the speed measuring pulleys 15 of different traction pulleys 09 one by one to ensure that the LED digital tube display 9 corresponding to each main machine can display the speed data normally.

[0093] S2, installation: The construction personnel bring the traction pulley 09 equipped with the wireless speed measuring unit 2 onto the iron tower, hang it on the main rope 03 as required, turn on the power, and then start to weave the net.

[0094] S3, adjustment: after the capping net 04 is formed, the status of the capping net 04 is obtained through a telescope or a drone, and the capping net 04 is first balanced; when the capping net 04 can be observed by the on-site personnel, the commander and the operators of different mobile winches turn on the power of their respective main machines, confirm that the speed data of each traction pulley is normal, and then perform a second balance adjustment on the capping net 04 until the shape of the capping net 04 is a rectangle.

[0095] S4, pulling: The commander uses the radio intercom to issue a command to start the overall pulling, first pulling at the initial speed V0, and each motorized capstan operator slowly adds fuel according to the traction pulley moving speed value displayed on their respective hosts, so that the moving speed of the traction pulley controlled by each operator reaches the primary speed-up speed V1. If the deformation of the capping net exceeds the standard (whether the deformation is too large mainly depends on the commander's experience), the moving speed of the traction pulley is reduced until it returns to normal, and then the speed is increased for pulling; if the capping net 04 does not deform or the deformation does not exceed the preset deformation, the commander issues a command to increase the pulling speed to the secondary speed-up speed V2; and the capping net 04 is pulled to the designated position above the spanning object at the secondary speed-up speed V2; the net pulling operation is completed. V0<V1<V2.

[0096] According to a specific embodiment of the present invention, before step S1, an installation step is also included, and the installation step includes: processing installation holes and installing the wireless speed measuring unit 2; the method for processing the installation holes is: drilling 5 holes on the original traction pulley bracket 16 or the newly processed bracket for installing the wireless speed measuring unit 2 and the Hall sensor elbow 21, and processing 8 magnet array installation holes 24 on the speed measuring pulley 15 at the same time, and installing the magnet array on the pulley after installing the magnet array; installing the wireless speed measuring unit 2 according to the following steps: first install the antenna base 8, the charging interface, and the power switch 13 on the casing; then install the Hall sensor elbow 21 on the traction pulley bracket 16 through the elbow installation hole 25; then install the casing and the battery bracket 18 together on the traction pulley bracket 16; then install the circuit board on the battery pressure plate 19; then install the battery 20 and the battery pressure plate 19 on the battery bracket 18, and connect the relevant cables to the circuit board; finally install the top cover 17 and the rubber stick antenna 6; after step S4, it also includes: S5, net closing: complete the net closing according to the net pulling operation process.

[0097] The following is a further description of the method for using the wireless speed measuring device for the capping net traction pulley of the present invention through a specific implementation process.

[0098] A method for using a wireless speed measuring device for a capping net traction pulley comprises the following steps:

[0099] 1. Processing mounting holes

[0100] Drill 5 holes on the original traction pulley bracket 16 or the newly processed bracket for installing the wireless speed measuring unit 2 and the Hall sensor elbow 21. At the same time, process 8 mounting holes on the speed measuring pulley 15, install the magnet array and then install it on the pulley. Fig.16 .

[0101] 2. Install the wireless speed measurement unit

[0102] The installation sequence of the main components of the wireless speed measurement unit 2 is as follows:

[0103] (1) Install the antenna base 8, charging port, and power switch 13 on the housing. Fig.17 .

[0104] (2) Install the Hall sensor elbow 21 onto the traction pulley bracket 16. Fig.18 .

[0105] (3) Install the housing and battery bracket 18 together on the traction pulley bracket 16. Fig.19 .

[0106] (4) Install the circuit board onto the battery pressing plate 19. Fig. 20 .

[0107] (5) Install the battery and battery pressure plate 19 on the battery bracket 18, and connect the relevant cables to the circuit board. Fig.21 .

[0108] (6) Install the top cover 17 and the rubber antenna 6. Fig. 22 .

[0109] 3. Numbering and joint debugging

[0110] At the construction site, the four traction pulleys 09 of the capping net 04 are numbered and assigned to the corresponding motorized capstan operators for orderly command in the next step. Then the wireless speed measuring unit 2 and the host are debugged together. Before debugging, ensure that both are fully charged. Turn on the power switches 13 of both on the ground, manually rotate the speed measuring pulleys 15 of different traction pulleys 09 one by one, and the corresponding LED digital tube display 9 of the host should be able to display the speed data normally.

[0111] 5. Install the pulley

[0112] like Fig.23 The construction workers bring the traction pulley 09 equipped with the wireless speed measuring unit 2 onto the iron tower, hang it on the main rope 03 as required, turn on the power, and then start to weave the net.

[0113] 6. Capping network adjustment

[0114] like Fig.24 After the capping net 04 is formed, its overall balance state is adjusted first. The balance state of the capping net 04 can be observed by a person standing under the capping net 04 and using binoculars, or a drone can be used to fly over the capping net 04 and transmit the image back for observation. During night construction, a spotlight needs to be used to shine a beam of strong light from the ground obliquely onto the capping net 04 so that the human eye can see the capping net 04 clearly in the dark.

[0115] The commander and operators of different motorized capstans turn on the power of their respective main machines, confirm that the speed data of each traction pulley is displayed normally, and then fine-tune the capping net 04 to confirm that its shape is a regular rectangle.

[0116] 7. Pulling of the capping net

[0117] like Fig.25 The commander issues an order to start pulling the whole thing, first at a lower speed, and each motorized capstan operator slowly adds fuel according to the traction pulley moving speed value displayed by their respective hosts, so that the moving speed of the traction pulleys controlled by them reaches the value required by the commander. If the capping net 04 does not deform or deforms slightly, the commander can order to increase the pulling speed until the capping net 04 is pulled to the designated position above the spanning object.

[0118] 8. Closing the net

[0119] like Fig.26 The process of collecting the net is similar to the process of pulling the net.

[0120] In summary, the wireless speed measuring device for the capping net traction pulley and the use method thereof of the present invention can improve the speed, safety, balance and stability of the capping net construction process. The specific description is as follows:

[0121] (1) Ensure the unified coordination of network closure construction command and operation: The device realizes the synchronous display of multi-pulley speed. The wireless transmission module of the wireless speed measurement unit 2 adopts the "transparent broadcast" communication mode, so that the commander and multiple motorized capstan operators can use the same host to simultaneously receive the real-time moving speed data of different traction pulleys, ensuring the consistency of displayed data, which is conducive to ensuring the consistent coordination of command and operation, and also reduces the difficulty and complexity of system design.

[0122] (2) Improve the efficiency and safety of net sealing construction: The main engine can obtain the real-time operating speed of the four traction pulleys and conduct remote monitoring, so that the commander and the capstan operator can accurately control the traction speed of different motorized capstans according to the same quantitative speed value. The capping net is not easily deformed during the traction process, ensuring that the capping net can achieve balanced traction at a higher speed, thereby improving the efficiency and safety of net sealing construction.

[0123] (3) Realize high-precision measurement of the pulley moving speed: Adopt non-contact detection method, through the combination of precise Hall sensor and annular magnet array 1, realize high-precision measurement of the moving speed of the traction pulley, with high resolution, good stability and reliability.

[0124] (4) Save construction costs: It can make the most of existing construction machinery and construction technology, without the need to purchase new equipment and new tools. Even if one or more devices are accidentally damaged during use, it will not have a fundamental impact on the existing construction process, and at most it will affect the traction speed.

[0125] (5) High cost performance: The device has a simple structure and can be simply modified based on the existing traction pulley developed by the applicant. The components are easy to obtain and the cost is low. It has a high cost performance and promotion and application value.

[0126] (6) Wide application scope: The device is suitable for the construction of wires across various voltage levels, especially in the construction of wires across highways, high-speed railways and other electrified railways.

[0127] Fig.25 , 26 The direction shown by the arrow is the pulling direction.

[0128] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0129] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wireless speed measuring device for a capping net traction pulley, characterized in that: The capping net traction pulley wireless speed measuring device is used to measure and display the real-time moving speed value of the traction pulley; the traction pulley includes a pulley bracket and a speed measuring pulley located on the pulley bracket, and the capping net traction pulley wireless speed measuring device includes: an annular magnet array, a wireless speed measuring unit and a host; the annular magnet array is located on one side of the speed measuring pulley, and the annular magnet array includes a plurality of uniformly distributed cylindrical magnets with a common center; the wireless speed measuring unit is fixedly installed on the pulley bracket; the wireless speed measuring unit includes: a Hall sensor signal processing module, a signal shaping circuit and a circuit board, and the circuit board includes a single-chip microcomputer and a wireless serial port module; the magnetic field of the annular magnet array changes to form a trigger signal acting on the Hall sensor signal processing module, and the Hall sensor signal processing module generates a pulse signal under the action of the trigger signal; the pulse signal is transmitted to the single-chip microcomputer after being post-processed by the signal shaping circuit; the single-chip microcomputer calculates the real-time moving speed value of the traction pulley according to the number of the pulse signals detected per second, and sends it to the host for display through the wireless serial port module.

2. The wireless speed measuring device for capping net traction pulley according to claim 1 is characterized in that: The wireless speed measurement unit also includes: a first housing, a top cover, a power switch, a charging socket, an antenna base, a battery, a circuit board, and a glue stick antenna; the circuit board also includes: a power cord socket, a Hall sensor signal line socket, and a DC step-down module.

3. The wireless speed measuring device for capping net traction pulley according to claim 2 is characterized in that: The host comprises an LED digital tube display, through which the real-time moving speed value of the traction pulley is displayed.

4. The wireless speed measuring device for capping net traction pulley according to claim 3 is characterized in that: The host comprises: a second housing, a panel, a power switch, a power indicator, a charging socket, an antenna base, a battery, a host circuit board, a glue stick antenna and a fastener.

5. The wireless speed measuring device for capping net traction pulley according to claim 4 is characterized in that: The wireless speed measuring unit is fixedly mounted on the pulley bracket by means of bolts.

6. The wireless speed measuring device for capping net traction pulley according to claim 5 is characterized in that: The cylindrical magnet is bonded to the speed measuring pulley by adhesive, and the speed measuring pulley is a nylon speed measuring pulley.

7. The wireless speed measuring device for the capping net traction pulley according to claim 6 is characterized in that: The number of the cylindrical magnets is n, where n is a natural number and n≥8, and the n cylindrical magnets are evenly arranged around the same center of a circle.

8. The wireless speed measuring device for the capping net traction pulley according to claim 7 is characterized in that: The n=8, the diameter of the bottom of the speed measuring pulley groove is 52 mm; and the pulse signal is a periodic pulse signal.

9. A method for using a wireless speed measuring device for a capping net traction pulley, characterized in that: The steps include: S1, numbering and joint debugging: prepare 4 traction pulleys; at the construction site, number the four traction pulleys and assign them to corresponding motorized capstan operators; then conduct joint debugging on the wireless speed measuring unit and the host, ensure that the wireless speed measuring unit and the host are fully charged before debugging, turn on the power switches of the wireless speed measuring unit and the host respectively on the ground, manually rotate the speed measuring pulleys of different traction pulleys one by one, and ensure that the LED digital tube display corresponding to each host can display the speed data normally; S2, installation: The construction workers will bring the traction pulley equipped with the wireless speed measuring unit to the tower, hang it on the main rope as required, turn on the power, and then start weaving the net; S3, adjustment: after the capping net is formed, the state of the capping net is obtained through a telescope or a drone, and the capping net is first balanced. When the capping net can be observed by the on-site personnel, the commander and the operators of different mobile capstans turn on the power of their respective main machines, confirm that the speed data of each traction pulley is displayed normally, and then perform a second balance adjustment on the capping net until the capping net has a rectangular shape. S4, pulling: the commander uses the radio intercom to issue a command to start the overall pulling, first pulling at the initial speed V0, and each motorized capstan operator slowly adds fuel according to the traction pulley moving speed value displayed on their respective hosts, so that the moving speed of the traction pulley controlled by each operator reaches the primary speed-up speed V1; if the deformation of the capping net exceeds the standard, the moving speed of the traction pulley is reduced until it returns to normal, and then the speed is increased for pulling; if the capping net does not deform or the deformation does not exceed the preset deformation, the commander issues a command to increase the pulling speed to the secondary speed-up speed V2; and the capping net is pulled to the designated position above the spanning object at the secondary speed-up speed V2; the net pulling operation is completed; V0<V1<V2.

10. The method for using the wireless speed measuring device for the capping net traction pulley according to claim 9, characterized in that: Before step S1, an installation step is also included, and the installation step includes: machining the installation hole and installing the wireless speed measurement unit; wherein: The method for processing the mounting holes is as follows: 5 holes are drilled on the original traction pulley bracket or the newly processed bracket for installing the wireless speed measuring unit and the Hall sensor elbow, and 8 mounting holes are processed on the speed measuring pulley at the same time, and the magnet array is installed on the pulley; Install the wireless speed measurement unit according to the following steps: first install the antenna base, charging port, and power switch on the housing; then install the Hall sensor elbow on the traction pulley bracket; then install the housing and battery bracket on the traction pulley bracket; then install the circuit board on the battery pressure plate; then install the battery and battery pressure plate on the battery bracket, and connect the relevant cables to the circuit board; finally install the top cover and rubber stick antenna; The steps also include a net-closing step, which includes completing the net-closing according to the net-pulling operation process.

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