A flywheel type rockfall protection net buffer energy dissipator and disaster warning system

Abstract

The present invention specifically provides a flywheel type rockfall protection net buffer energy dissipator and a disaster warning system. The flywheel type rockfall protection net energy dissipator in the present invention mainly includes a steel rope, a flywheel, a restoring spring, and a power generation transmission shaft; a disaster warning system based on the flywheel type rockfall protection net buffer energy dissipator is also provided, which mainly includes a flywheel type buffer energy dissipator, a power generation module, a rockfall energy level discrimination and alarm control module, a on-site alarm release module, and a remote alarm information transmission module. The flywheel type buffer energy dissipator is installed on the rockfall protection net, and the rockfall drives the flywheel to provide power to the power generation module. The disaster level is determined through the rockfall energy level discrimination and alarm control module, and information is transmitted by using the on-site alarm release module and the remote alarm information transmission module. The present invention can buffer and reduce the kinetic energy of the rockfall impact, realize the monitoring and warning of rockfall disasters, and minimize the harm caused by road slope collapse and rockfall disasters.

Description

Technical Field

[0001] The present invention relates to the technical field of geological disaster safety protection and disaster warning, and in particular to a flywheel type rockfall protection net buffer energy dissipator and a disaster warning system. Background Art

[0002] Rockfall refers to a dynamic evolution process in which rock blocks on a slope surface become unstable for some reason and then move rapidly downward along the slope through falling, rebounding, jumping, rolling or sliding, etc., and finally come to rest in a relatively flat area or near an obstacle. Rockfall is a common geological disaster in mountainous areas. Its causes are complex, its suddenness is strong, and the environment it is in is high, steep and hidden. It is difficult to investigate, scattered in distribution, with poor regularity and difficult to predict, posing a great threat to people's lives and property.

[0003] At present, to solve this problem, a combination of protection and warning is usually adopted. Among them, protection measures mostly use methods such as installing protection nets by the roadside. To prevent the protection net from being damaged by rockfall impact, a buffer structure needs to be added to the protection net to consume the impact energy of the rockfall. The buffer device of the traditional protection net generally uses an annular buffer, and realizes energy dissipation and buffering through frictional braking and elastic deformation. Warning methods mostly use manual detection or machine equipment monitoring. Detection personnel regularly or irregularly go to disaster-prone areas for inspections, and judge the disaster situation by combining monitoring data and experience. The above methods have certain defects:

[0004] 1. The buffering ability is limited. The limited elastic recovery ability and unstable anti-friction ability of the friction braking ring in the annular buffer restrict its buffering ability.

[0005] 2. The annular buffer only plays a role in buffering and energy dissipation when impacted by rockfall, and does not combine with rockfall alarm, and cannot provide a disaster alarm function when a rockfall disaster occurs.

[0006] 3. Methods such as manual detection and warning cannot timely know the situation of rockfall disasters, and the personal safety cannot be guaranteed. Summary of the Invention

[0007] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a flywheel type rockfall protection net buffer energy dissipator and a disaster warning system, which can improve the buffering ability of the rockfall protection net buffer, and at the same time designs a function of real-time warning for the current protection nets without alarm devices, ensuring that vehicles and pedestrians on the road can timely know the danger of rockfall and minimizing the harm brought by rockfall disasters to the greatest extent.

[0008] On the one hand, the embodiment of the present invention provides a flywheel type rockfall protection net buffer energy dissipator, including: a steel rope, a flywheel, a clockwork spring, a pawl, a ratchet wheel, and a power generation transmission shaft. Among them,

[0009] The steel rope is used to connect the protective net and the flywheel energy absorber, transmitting the tensile force generated when the protective net is impacted to the inside of the energy absorber and driving the flywheel to rotate;

[0010] The flywheel is used for one-way rotation to buffer the energy of falling rocks;

[0011] The clockwork spring is used to reset the stretched steel rope for the next stretching;

[0012] The ratchet and pawl are used to control the one-way rotation of the flywheel and the one-way tightening and stress of the clockwork spring;

[0013] The power generation transmission shaft is used to drive the generator rotor by the rotation of the flywheel, thereby generating electric energy.

[0014] On the other hand, an embodiment of the present invention provides a falling rock disaster warning system, including: a flywheel type buffer energy absorber, a power generation module, a falling rock energy level discrimination and alarm control module, a remote alarm information transmission module, and a field alarm release module; wherein,

[0015] The flywheel type buffer energy absorber is used to start rotating after absorbing the impact energy of falling rocks, converting potential energy into mechanical energy;

[0016] The power generation module is used to connect to the flywheel type buffer energy absorber and convert mechanical energy into electric energy;

[0017] Preferably, the power generation module includes a micro generator, which is used to convert the mechanical energy of the flywheel rotation into electric energy, and the electric energy is used for power supply of the alarm and the information transmission module. A circuit protection device is used to protect the generator and related circuits from overheating, overloading, etc.

[0018] The falling rock energy level discrimination and alarm control module is used to identify whether a falling rock impact occurs and the energy level of the impact according to the input voltage or current;

[0019] Preferably, the falling rock energy level discrimination and alarm control module includes a falling rock energy level discrimination module and an alarm control module. Among them, the falling rock energy level discrimination module is used to classify and identify the energy level of the falling rock impact on the protective net; the alarm control module is used to control the release of different alarms according to the energy level discrimination result.

[0020] The remote alarm information transmission module and the field alarm release module are used to receive the disaster identification information and transmit alarm signals to the remote data control center and the field respectively.

[0021] Preferably, the remote alarm information transmission module includes a GPRS transmission module, a CDMA transmission module, a WIFI transmission module, and a LORA transmission module arranged in parallel, wherein the GPRS transmission module and the CDMA transmission module are used to send the data related to the alarm information to the remote data control center.

[0022] Preferably, the on-site alarm release module includes alarm methods such as flashing light alarms, buzzer alarms, information boards or intelligence boards, etc., which are used to turn on different alarms according to the instructions of the alarm control module.

[0023] The beneficial effects brought by the above technical solutions are as follows: The present invention uses a flywheel for buffering and energy dissipation, generates electric energy through a micro generator, and uses a data transmission module for remote signal transmission. The present invention greatly improves the buffering ability of the protective net against the impact of falling rocks, improves the reusability of the equipment, and reduces the maintenance cost; uses a simple identification and judgment method to give a real-time early warning of the collapse and falling rock disasters, and timely reminds residents or passing vehicles, etc. that there are falling rock disasters. The device of the present invention has a simple structure, is convenient for installation and maintenance, the released alarm is reliable and not prone to false alarms, and can also send an alarm signal to the rear control center while releasing the alarm on-site. The present invention fills the blank that there is no early warning device on the protective net for falling rock disasters at present, avoids the buffer being deformed and invalidated due to excessive kinetic energy of rolling stones in the current annular buffer, and improves the protection ability in the field of falling rock disaster protection. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following relevant drawings are drawn:

[0025] Figure 1 is a schematic structural diagram of the flywheel type falling rock buffer and energy dissipator in the present invention;

[0026] Figure 2 is a schematic hardware structure diagram of the specific implementation manner of the present invention;

[0027] In the figure, 1 - fixed shaft; 2 - flywheel; 3 - hairspring; 4 - pawl; 5 - ratchet; 6 - gear main shaft, 7 - flywheel type buffer and energy dissipator; 8 - power generation module; 9 - falling rock energy level discrimination and alarm control module; 10 - remote alarm information transmission module; 11 - on-site alarm release module; 12 - remote data control center. Detailed Embodiments

[0028] To make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings of the present invention. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0029] Refer to the attached Figure 1, A flywheel - type rockfall protection net buffer energy dissipator, comprising: a fixed shaft 1 for fixing a clockwork spring; a flywheel 2 which rotates when subjected to the tension of a steel rope, and uses the stretching force to do work to drive the rotation of the flywheel 2, converting the stretching potential energy into rotational mechanical energy; a clockwork spring 3 for resetting the stretched steel rope for the next stretching; a pawl 4 and a ratchet 5 for controlling the one - way rotation of the flywheel and the clockwork spring to be stressed; a power - generating transmission shaft for driving the generator rotor by the rotation of the flywheel, thereby generating electric energy.

[0030] Appendix Figure 2 FIG. is a schematic structural diagram of a flywheel - type rockfall disaster warning system provided by an embodiment of the present invention. As Figure 2 shown, the system includes:

[0031] A flywheel - type buffer energy dissipator 7, a power - generation module 8, a rockfall energy - level discrimination and alarm control module 9, a remote alarm information transmission module 10, a field alarm release module 11, and a remote data control center 12 connected to the remote alarm information transmission module 10; wherein,

[0032] The flywheel - type buffer energy dissipator 7 is used to start rotating after absorbing the impact energy of a rockfall, converting potential energy into mechanical energy;

[0033] The power - generation module 8 is used to connect to the flywheel - type buffer energy dissipator, converting mechanical energy into electric energy;

[0034] The rockfall energy - level discrimination and alarm control module 9 is used to identify whether a rockfall impact occurs and its magnitude according to the input voltage or current;

[0035] The remote alarm information transmission module 10 and the field alarm release module 11 are used to receive disaster identification information and transmit alarm signals to the remote data control center 12 and the field respectively.

[0036] Specifically, the power - generation module 8 includes a micro - generator and a circuit protection device, which is used to convert the mechanical energy of the flywheel rotation into electric energy, and the generated electric energy is used to supply power to the rockfall energy - level discrimination and alarm control module 9, the remote alarm information transmission module 10, and the field alarm release module 11.

[0037] Preferably, the rockfall energy - level discrimination and alarm control module 9 includes a rockfall energy - level discrimination module and an alarm control module. The rockfall energy - level discrimination module is used to identify the input power parameters, and judge whether a rockfall impact occurs and the energy magnitude of the impact through the voltage level or current magnitude. The alarm control module determines the types of alarm devices in the field alarm release module to be turned on according to the recognition result, and inputs the result into the remote alarm information transmission module.

[0038] Preferably, the remote alarm information transmission module 10 is configured to send the alarm information of the rockfall impact to the remote data control center 12.

[0039] Preferably, the on-site alarm release module 11 includes an on-site flashing light alarm output module, a buzzer alarm output module, and an information board display alarm module.

[0040] It should be noted that the flywheel type rockfall disaster warning system described in this embodiment is used for rockfall energy level identification and disaster warning, mainly including step S1, step S2, step S3, step S4, and step S5.

[0041] Step S1, install and connect the flywheel type buffer energy dissipator to the protective net through a steel wire rope. When the protective net is impacted by a rockfall, the stretching of the protective net drives the stretching of the steel wire rope; the stretching of the steel wire rope drives the one-way rotation of the flywheel; the flywheel rotates at a high speed, converting the stretching potential energy into the rotational kinetic energy of the flywheel.

[0042] Step S2, when the flywheel of the flywheel type buffer energy dissipator rotates, it drives the micro generator of the power generation module to generate electricity through the power generation transmission shaft; the circuit protection device plays a role in protecting the circuit of the micro generator to prevent overheating or excessive voltage.

[0043] Step S3, the power generation module outputs the generated power to the rockfall energy level discrimination and alarm control module through a cable for identification and judgment. When the current or voltage exceeds the set alarm threshold, the alarm control module determines to supply power to different alarms in the on-site alarm release module separately or together, so that the on-site alarm release module issues a flash of light, a buzzer sound, an information board display alarm, or a combined alarm according to the setting, realizing different levels of alarms for different magnitudes of rockfall impacts.

[0044] Step S3 in this embodiment may include step S31 and step S32.

[0045] Step S31, through experiments, establish the energy level magnitude of the rockfall impact E and the output current of the power generation module I or voltage V magnitude relationship:

[0046] I i ( V i ) = f ( E i );

[0047] where i represents the impact order.

[0048] Step S32, set the alarm rules and thresholds Hn , where n = 1, 2, 3, 4, 5; and the judgment is made according to the following rules:

[0049] When I i ( V i ) ≤ H 1 , no alarm is given;

[0050] When H 1 ≤ I i ( V i ) ≤ H 2 , the alarm is activated A 1 ;

[0051] When H 2 < I i ( V i ) ≤ H 3 , the alarm is activated A 2 ;

[0052] When H 3 < I i ( V i ) ≤ H 4 , the alarm is activated A 3 ;

[0053] When H 4 < I i ( V i ) ≤ H 5 , the alarm is activated A 4 ;

[0054] Among them A 1 、 A 2 、 A 3 、 A 4They respectively correspond to the on-site flashing light alarm output module, the buzzer alarm output module, the information board display alarm module, or a combination of several alarm modules.

[0055] Step S4, while the rockfall energy level discrimination and alarm control module issues an alarm, it transmits the alarm information to the remote data control center in real time through the data sending module.

[0056] Step S5, the spring in the flywheel energy dissipation buffer rotates the flywheel back to the initial position and resets and tightens the steel rope to prepare for the next impact.

[0057] The above embodiments of the flywheel type rockfall protection net buffer energy dissipator and the disaster warning system illustrate the purpose, technical solutions and beneficial effects of the present invention in detail, and those skilled in the art can clearly understand. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not used to limit the protection scope of the present invention; those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for a flywheel-type rockfall disaster warning system to identify the energy level of rockfalls and give early warnings of disasters Characterized in that The flywheel-type rockfall disaster warning system includes a flywheel-type buffer energy dissipator, a power generation module, a rockfall energy level discrimination and alarm control module, a remote alarm information transmission module, a on-site alarm release module and a remote data control center; The flywheel-type buffer energy dissipator is used to start rotating after absorbing the impact energy of the rockfall, and convert the potential energy into rotational mechanical energy; The power generation module is used to connect to the flywheel-type buffer energy dissipator and convert mechanical energy into electrical energy; The rockfall energy level discrimination and alarm control module is used to identify whether a rockfall impact occurs and the energy level of the impact according to the input voltage or current; The remote alarm information transmission module and the on-site alarm release module are used to receive disaster identification information and transmit alarm signals to the remote data control center and the on-site respectively; The power generation module includes a micro-generator and a circuit protection device, which is used to convert the rotational mechanical energy of the flywheel into electrical energy, and the generated electrical energy is used to supply power to the rockfall energy level discrimination and alarm control module, the remote alarm information transmission module, and the on-site alarm release module; The rockfall energy level discrimination and alarm control module includes a rockfall energy level discrimination module and an alarm control module; the rockfall energy level discrimination module is used to identify the input power parameters, judge whether a rockfall impact occurs through the voltage level or current magnitude, and determine the energy level of the impact; The alarm control module determines the types of alarm devices in the on-site alarm release module to be turned on according to the identification result, and inputs the result into the remote alarm information transmission module; The flywheel-type buffer energy dissipator includes: a fixed shaft, a flywheel, a clockwork spring, a pawl, a ratchet and a power generation transmission shaft; The fixed shaft is used to fix the clockwork spring; the flywheel is used to rotate when subjected to the tension of the steel cable, and use the stretching force to do work to drive the flywheel to rotate, converting the stretching potential energy into rotational mechanical energy; the clockwork spring is used to reset the stretched steel cable for the next stretching; the pawl and the ratchet are used to control the one-way rotation of the flywheel, and the clockwork spring is tightened unidirectionally; the power generation transmission shaft drives the generator rotor by the rotation of the flywheel, thereby generating electrical energy; The method includes the following steps: Step S1, connect the flywheel-type buffer energy dissipator to the protective net through a steel cable. When the protective net is impacted by a rockfall, the protective net stretches and drives the steel cable to stretch; the steel cable stretches and drives the flywheel to rotate unidirectionally; the flywheel rotates at high speed, converting the stretching potential energy into the rotational mechanical energy of the flywheel; Step S2, the flywheel of the flywheel-type buffer energy dissipator rotates, and drives the micro-generator of the power generation module to generate electricity through the power generation transmission shaft; the circuit protection device protects the circuit of the micro-generator to prevent overheating or too high voltage; Step S3, the power generation module outputs the generated power to the rockfall energy level discrimination and alarm control module through a cable for identification and judgment. When the current or voltage exceeds the set alarm threshold, the alarm control module determines to supply power to different alarm devices in the on-site alarm release module separately or together, so that the on-site alarm release module issues a flash, a buzzer sound, an information board display alarm or a combined alarm according to the setting, realizing different-level alarms for different-level rockfall impacts; Step S4, while the falling rock energy level discrimination and alarm control module issues an alarm, it transmits the alarm information to the remote data control center in real time through the data sending module; Step S5, the clockwork spring rotates the flywheel back to the initial position, resets and tightens the steel rope to prepare for the next impact.

2. The flywheel type falling rock disaster warning system according to claim 1, characterized in that, the on-site alarm release module includes an on-site flashing light alarm output module, a buzzer alarm output module, and an information board display alarm module.

3. The flywheel type falling rock disaster warning system according to claim 2, characterized in that, the step S3 includes the following steps: A. Through experiments, establish the relationship between the magnitude E of the rockfall impact energy and the magnitude I or V of the output current or voltage of the power generation module: I i (V i ) = f(E i ) ; where i represents the impact order; B. Set the alarm rules and thresholds H n , where n = 1, 2, 3, 4, 5; and the judgment is made according to the following rules: When I i (V i )≤H 1 there is no alarm When H 1 ≤I i (V i )≤H 2 start A 1 ; When H 2 ＜I i (V i )≤H 3 start A 2 ; When H 3 ＜I i (V i )≤H 4 start A 3 ; When H 4 ＜I i (V i )≤H 5 start A 4 ; Among them, A 1 , A 2 , A 3 correspond to the on-site flashing light alarm output module, the buzzer alarm output module, and the information board display alarm module respectively. A 4 correspond to a combination of at least two of the on-site flashing light alarm output module, the buzzer alarm output module, and the information board display alarm module.

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