Freight cableway transportation monitoring mechanism

Abstract

The invention discloses a freight cableway transportation monitoring mechanism, and relates to the technical field of freight cableway operation monitoring appliances. Through the arrangement of the positioning terminal, the position of goods on the cableway can be conveniently monitored in real time, and the problems that the cableway span is large, and the real-time condition of transportation is difficult to directly master are solved; through the real-time data processing and self-adaptive judgment mechanism of the balance analysis module, the weight unbalance state of the goods in the transportation process is efficiently identified, the allowable fluctuation range is dynamically adjusted in combination with historical normal working condition data, and false alarm or missing alarm caused by a fixed threshold value is effectively avoided; the influence analysis module performs real-time acquisition and quantitative analysis on multi-source influence factors to realize working condition self-adaptive adjustment of a fluctuation threshold value; influence values of all influence factors on the tension fluctuation are calculated based on a physical model, and a comprehensive influence quantity is synthesized; therefore, the device can keep the reasonability of the judgment threshold value under different operation speeds, environment conditions and equipment states.

Description

Technical Field

[0001] This invention relates to the field of monitoring equipment for freight cableway transportation, and more particularly to a monitoring organization for freight cableway transportation. Background Technology

[0002] Freight cableways are specialized transportation systems that use steel wire ropes erected on supporting structures as running tracks for transporting materials during the construction of overhead power transmission lines. However, some freight cableways still have defects in design, installation, and operation. If these defects are not discovered and corrected in a timely manner, they may pose a potential threat to the safe operation of the cableway.

[0003] During cableway transportation, due to the large span and long spacing between supports, it is difficult to effectively supervise and monitor the entire line in real time. Apart from some areas near the supports that can be observed, it is difficult to directly grasp the real-time transportation situation. In addition, in high-frequency use environments, simple cableways often lack weighing devices, making it impossible to accurately measure the weight of goods, which can easily lead to overloading operations, increasing the risk of cableway wear and damage and the probability of safety accidents.

[0004] Traditional freight cableway imbalance monitoring devices mostly use a fixed threshold judgment mechanism, which relies on a preset, fixed tension difference threshold to determine whether the loaded cargo is unbalanced. This method is applicable under simple working conditions, but in actual transportation, various factors such as the cableway's operating speed, the wear of the supporting wheels, the shift of the cargo's center of gravity, the cableway span, ambient wind speed, and the elasticity differences of the connecting rope materials can all significantly affect the tension distribution of each connecting rope. Fixed thresholds cannot adapt to the dynamic changes of the above factors, often leading to high false alarm rates and a high risk of missed alarms. Especially in complex working conditions or harsh environments, the device either frequently issues false warnings or fails to detect the true imbalance in time, seriously affecting operational efficiency and safety.

[0005] Therefore, improvements need to be made based on the above issues. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a freight cableway transportation monitoring mechanism.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a freight cableway transportation monitoring mechanism, comprising a positioning frame and a support wheel rotatably connected to the upper end of the positioning frame, and a hook installed at the lower end of the positioning frame for hanging heavy objects, wherein a monitoring mechanism for monitoring the movement of goods is installed on the side of the positioning frame.

[0008] The monitoring box is also equipped with a balance analysis module and an impact analysis module.

[0009] The balance analysis module preprocesses the real-time acquired tension data, removing outliers; and calculates the average tension of each rope at the same moment. and the difference between each rope and the mean. Then compared with a preset threshold. If the difference exceeds a threshold, an imbalance is determined, a balance warning signal is generated, and the warning light on the positioning terminal and the red, yellow, and green lights on the connecting rope are activated for visual indication. Based on historical normal operating data, the distribution of tension differences is statistically analyzed, and the confidence coefficient is adjusted accordingly. Dynamically determine the allowable range of tensile force fluctuation This enables adaptive imbalance detection;

[0010] The impact analysis module calculates the impact of each factor on tensile force fluctuation based on the physical model, and then synthesizes the comprehensive impact. Finally, the overall impact will be... The basic fluctuation range obtained by superimposing it on historical statistics Above, the final allowable fluctuation range for adaptive operating conditions is generated. This enables the device to dynamically adjust the imbalance judgment threshold based on real-time operating conditions.

[0011] Preferably, the data analysis steps performed by the balance analysis module are as follows:

[0012] M1: Calculates the mean and standard deviation of the acquired tensile data, sets the fluctuation range based on the calculated mean and standard deviation, marks corresponding data outside the fluctuation range as outliers, removes outliers, and averages the remaining tensile data after outlier removal. The calculation will include the mean. As valid data;

[0013] M2: The preprocessed tensile data is used as the valid tensile data. The tensile data of multiple connecting ropes for the same load are merged into a single dataset, and the average of the tensile data in the same dataset is calculated. Calculate the mean tensile force. Difference between various tensile force data If a preset tension difference threshold is used... Or the difference in tension between the connecting ropes If this occurs, a balance warning signal will be generated.

[0014] Preferably, the steps for data analysis performed by the impact analysis module are as follows:

[0015] N1: Real-time acquisition and calculation of the impact of various factors on tension fluctuations, including the impact of operating speed. The influence value of wear degree of the support roller Impact value of cargo center of gravity offset Cableway span influence value Environmental wind speed influence value Influence of the elastic modulus of the connecting rope ;

[0016] N2: Combine the above impact values ​​into a comprehensive impact amount. And calculate the final allowable fluctuation range of the adaptive operating condition. ,in accordance with The imbalance judgment threshold is dynamically adjusted in real time.

[0017] Preferably, the monitoring mechanism includes a monitoring box installed above the side of the positioning frame, and a positioning terminal is installed inside the monitoring box.

[0018] Preferably, the monitoring mechanism further includes a signal acquisition and conversion box installed on the lower side of the positioning frame. A signal acquisition module is installed on the upper part of the signal acquisition and conversion box, and a power supply is installed on the lower part of the signal acquisition and conversion box. The power supply is electrically connected to a weight monitoring component, which is installed on the lower part of the positioning frame.

[0019] Preferably, the weight monitoring component includes a weight sensor installed at the lower end of the positioning frame, a positioning plate at the upper end of the weight sensor, a locking frame connected to the front end of the positioning plate by bolts, and the positioning plate connected to the upper end of the hook by the locking frame.

[0020] Preferably, a slide bar is installed inside the lower end of the positioning frame, the positioning plate is slidably connected to the positioning frame through the slide bar, and the positioning plate abuts against the detection end of the weight sensor.

[0021] Preferably, the positioning frame is equipped with a positioning block for positioning the cableway line, and the positioning block is placed below the supporting wheel.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. By setting up positioning terminals, it is easy to monitor the position of goods on the cableway in real time, which solves the problem of large cableway spans and difficulty in directly grasping the real-time transportation situation; through the cooperation of weight sensors and signal acquisition modules, the weight of transported goods can be accurately measured and weight information can be transmitted in real time, effectively avoiding overloading operations and reducing the risk of cableway wear and damage and the incidence of safety accidents.

[0024] 2. Through the real-time data processing and adaptive judgment mechanism of the balance analysis module, the system can efficiently identify the weight imbalance of goods during transportation and dynamically adjust the allowable fluctuation range based on historical normal operating data, effectively avoiding false alarms or missed alarms caused by fixed thresholds. The real-time indication of the tension status of each rope using red, yellow, and green lights allows staff to intuitively and quickly locate the imbalance position, significantly improving the timeliness and ease of operation of the imbalance response. The influence analysis module enables real-time collection and quantitative analysis of multiple influencing factors, achieving condition-adaptive adjustment of the fluctuation threshold. Based on a physical model, the system calculates the impact value of each influencing factor on the tension fluctuation and synthesizes the comprehensive influence quantity. This ensures that the device maintains a reasonable judgment threshold under different operating speeds, environmental conditions, and equipment states, avoiding frequent false alarms under harsh conditions and maintaining high sensitivity under normal operating conditions, thereby improving the overall adaptability and monitoring reliability of the device. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this invention;

[0027] Figure 2 This is a schematic diagram of the overall three-dimensional structure proposed in this invention from another perspective;

[0028] Figure 3 This is a schematic diagram of the overall front view structure proposed in this invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the monitoring mechanism proposed in this invention;

[0030] Figure 5 This is a flowchart of the system proposed in this invention.

[0031] The following are the components listed in the diagram: 1. Positioning frame; 2. Supporting roller; 3. Positioning block; 4. Hook; 5. Positioning plate; 6. Locking frame; 7. Weight sensor; 8. Monitoring box; 9. Signal acquisition and conversion box; 10. Positioning terminal; 11. Signal acquisition module; 12. Power supply. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Example 1: See Figures 1 to 4This invention discloses a freight cableway transportation monitoring mechanism, comprising a positioning frame 1, a support wheel 2 rotatably connected to the upper part of the positioning frame 1, and a hook 4 installed at the lower part of the positioning frame 1 for hanging heavy objects. A monitoring mechanism for monitoring the movement of goods is installed on the side of the positioning frame 1. The positioning frame 1, support wheel 2, and hook 4 facilitate the movement of the hung heavy objects on the cableway. The monitoring mechanism facilitates real-time monitoring of the movement status of the heavy objects on the cableway. The monitoring mechanism includes a monitoring box 8 installed on the upper side of the positioning frame 1, and a positioning terminal 10 installed inside the monitoring box 8. The monitoring box 8 facilitates the installation of the positioning terminal 10. The positioning terminal 10 facilitates real-time monitoring of the position of the goods. The positioning terminal 10 is model iRTK5. X, the positioning terminal 10 has an IP67 protection rating; the monitoring mechanism also includes a signal acquisition conversion box 9 installed on the lower side of the positioning frame 1. A signal acquisition module 11 is installed on the upper part of the signal acquisition conversion box 9, and a power supply 12 is installed on the lower part of the signal acquisition conversion box 9. The power supply 12 is electrically connected to a weight monitoring component, which is installed on the lower part of the positioning frame 1. The setting of the signal acquisition conversion box 9 facilitates the installation of the signal acquisition module 11 and the power supply 12. The setting of the signal acquisition module 11 facilitates the conversion of the information collected by the weight sensor 7 into wireless signals for transmission to the signal acquisition box at the host instrument. The setting of the power supply 12 facilitates the provision of power to the positioning terminal 10, the signal acquisition module 11, and the weight sensor 7.

[0034] In this invention, the weight monitoring component includes a weight sensor 7 installed at the lower end of the positioning frame 1. A positioning plate 5 is provided at the upper end of the weight sensor 7. A locking frame 6 is bolted to the front end of the positioning plate 5, and the positioning plate 5 is connected to the upper end of the hook 4 through the locking frame 6. The weight sensor 7 facilitates the monitoring of weight changes of goods during operation. The positioning plate 5 and the locking frame 6 facilitate the installation of the hook 4. A slide bar is installed inside the lower end of the positioning frame 1, and the positioning plate 5 is slidably connected to the positioning frame 1 through the slide bar, and the positioning plate 5 abuts against the detection end of the weight sensor 7. A positioning block 3 for cableway positioning is installed inside the positioning frame 1, and the positioning block 3 is placed below the support wheel 2. The positioning block 3 helps to ensure that the device does not shake significantly during cableway operation.

[0035] Working Principle: When using this invention, the operator first initiates the operation process. The upper support wheel 2 of the device is connected to an external motor via a coupling. The support wheel 2 is then placed on the main line of the cableway. Subsequently, the secondary line of the cableway is connected to the positioning frame 1 via the positioning block 3 inside the positioning frame 1. The positioning block 3's limiting effect ensures that the device will not experience significant shaking during subsequent cableway operation. Next, the goods to be transported are hung on the hook 4 installed at the lower end of the positioning frame 1. Since the upper end of the hook 4 is bolted to the positioning plate 5 via the locking frame 6, and the positioning plate 5 is slidably connected to the positioning frame 1 via the sliding strip inside the lower end of the positioning frame 1 and precisely abuts against the detection end of the weight sensor 7 of the weight monitoring component, the goods are securely mounted. After completion, the weight sensor 7 can directly sense and detect the initial weight of the goods. Then, the staff connects all the electrical equipment with wires and connects the power supply 12 installed at the bottom of the signal acquisition conversion box 9. The power supply 12 provides stable power to the positioning terminal 10 in the monitoring box 8 above the side of the positioning frame 1, the signal acquisition module 11 inside the signal acquisition conversion box 9, and the weight sensor 7. At this time, the weight sensor 7 transmits the detected initial weight information of the goods to the signal acquisition module 11. The signal acquisition module 11 then converts the weight information into a wireless signal and transmits it to the signal acquisition box at the host instrument. At the same time, the positioning terminal 10 is started so that it can collect the initial position information of the goods in real time and send it to the radio.

[0036] After completing the above preparations, the staff started the external motor, which drove the support wheel 2 to rotate, thereby moving the entire device smoothly along the cableway. During the movement, the positioning terminal 10 continuously monitored the dynamic position information of the cargo in real time and simultaneously fed it back to the radio. The signal acquisition module 11 simultaneously received the cargo weight data transmitted by the weight sensor 7 to monitor weight changes. When the cargo swayed in the air due to external factors, the weight value monitored by the weight sensor 7 would fluctuate accordingly. If the fluctuation reached the preset safety threshold, the device would immediately issue an early warning signal to promptly remind the staff to take appropriate measures. After the cargo was safely transported to the designated destination, the staff turned off the motor, causing the support wheel 2 to stop rotating. The device then came to a stop on the cableway. The cargo on the hook 4 was then removed, and the positioning terminal 10, signal acquisition module 11, and other electrical equipment were turned off in sequence, and the power supply 12 was cut off. This completed the monitoring and control operation of the freight cableway.

[0037] Example 2: See Figure 5 The monitoring box 8 is also equipped with intelligent control components, which include a balance analysis module and an impact analysis module.

[0038] The balance analysis module preprocesses the real-time acquired tension data, removing outliers; and calculates the average tension of each rope at the same moment. and the difference between each rope and the mean. Then compared with a preset threshold. If the difference exceeds a threshold, an imbalance is determined, a balance warning signal is generated, and the warning light on the positioning terminal and the red, yellow, and green lights on the connecting rope are activated for visual indication. Based on historical normal operating data, the distribution of tension differences is statistically analyzed, and the confidence coefficient is adjusted accordingly. Dynamically determine the allowable range of tensile force fluctuation This enables adaptive imbalance detection;

[0039] The impact analysis module calculates the impact of each factor on tensile force fluctuation based on the physical model, and then synthesizes the comprehensive impact. Finally, the overall impact will be... The basic fluctuation range obtained by superimposing it on historical statistics Above, the final allowable fluctuation range for adaptive operating conditions is generated. This enables the device to dynamically adjust the imbalance judgment threshold according to real-time operating conditions;

[0040] Tension sensors and red-yellow-green indicator lights are installed on the connecting ropes used to haul the cargo, acquiring tension data during transport. This acquired tension data is then preprocessed. The preprocessed tension data is used as valid tension data. Tension data from multiple connecting ropes carrying the same cargo are merged into a single dataset, and the average of the tension data within this dataset is calculated. Calculate the mean tensile force. Difference between various tensile force data If a preset tension difference threshold is set Or the difference in tension between the connecting ropes If the balance warning signal is not detected, it will be generated and transmitted to the signal acquisition module 11. This will allow the warning light inside the positioning terminal 10 to issue a warning, and the red, yellow, and green tri-color sensor lights on each connecting rope will emit red and green lights to help staff identify the location of the imbalance (when the tension data exceeds the calculated average). The corresponding red, yellow, and green sensor lights on the connecting rope emit a red light, indicating that the tensile force data is lower than the calculated average. The corresponding red, yellow, and green sensor lights on the connecting rope emit a yellow light, indicating that the tension data equals the calculated average. The corresponding red, yellow, and green sensor lights on the connecting rope emit a green light.

[0041] In actual operation, the tension data on the connecting ropes of each loaded cargo is adjusted to match the calculated average. Performing operations that are completely identical will take a lot of time and affect work efficiency; therefore, in actual operation, it is sufficient to adjust the tension data on the corresponding connecting rope to the preset tension data fluctuation range.

[0042] Acquire historical data, including the tension data of each connecting rope at various moments during historical operations under "normal operation" (no imbalance warning). Record the data and calculate its mean. And calculate the tension data and average value of each connecting rope. The difference between Statistics on all normal operating conditions mean and standard deviation The fluctuation range is set according to the calculated mean and standard deviation. ,in Indicates the first The first connecting rope The tensile force data obtained from this measurement Confidence coefficient;

[0043] Obtain the tension difference from more than 30 "normal, alarm-free" operations in historical data. Calculate its mean and standard deviation. In the statistical historical data proportion ;like , reduce until Approaching but not exceeding ;like Increase until Below Final determination The specific value;

[0044] The collected data was sorted according to the collection time, and corresponding items collected at the same time were sorted. averaging the data and standard deviation The calculation, and the mean obtained from the calculation. and standard deviation Collect data fluctuation range for corresponding items The system is configured to compare the collected data for a given item with its fluctuation range, mark data outside the fluctuation range as outliers, and record the number of outliers. ,like If the collected data is abnormal, the data will be re-tested; if If outliers are removed, the mean of the remaining corresponding test data after outlier removal is calculated. The calculation, and the mean obtained from the calculation. As the corresponding data detected at the corresponding time;

[0045] Fluctuation range The basic fluctuation is affected by various factors. ;

[0046] Cableway operating speed Changes cause variations in inertial forces and air resistance, thereby altering load distribution; velocity influence value. ,in For speed influence coefficient, Rated speed;

[0047] Wear of support rollers This leads to uneven friction between the rope and the support wheel, increased vibration, and the influence of wear on the value. ,in The coefficient representing the influence of wear degree;

[0048] Cargo center of gravity offset This leads to uneven static tension in the ropes; the influence of center of gravity shift. ,in This is the offset distance of the center of gravity in the horizontal plane. The influence coefficient of center of gravity offset. This is the horizontal projection length of the suspension rope. For the weight of the goods;

[0049] Cableway span It affects rope sag and vibration mode frequency, thus influencing dynamic tension distribution; span influence value. ,in For the comprehensive dynamic coefficient, For the number of connecting ropes, The maximum sag of the cable at mid-span. To indicate The degree of nonlinearity of the influence of tensile fluctuations, vibration influence factor , This is the magnification factor. The normalized vibration amplitude;

[0050] Ambient wind speed Causes cargo swaying and additional aerodynamic forces; wind speed influence value ,in air density, This is the drag coefficient. The windward area of ​​the cargo. This is the amplification factor for the uneven distribution of wind tension across the ropes. The angle between the wind direction and the cableway axis;

[0051] The stiffness of the connecting ropes affects the difference in force distribution among the ropes during deformation coordination; for If one of the parallel elastic ropes has an error in length... Then the force difference Elastic stiffness coefficient ,in The elastic modulus of the connecting rope material. The effective cross-sectional area of ​​the connecting rope. The stress-free length of the connecting rope; the influence value caused by the non-uniformity of the elastic modulus. ,in The difference in elastic modulus between the connecting ropes;

[0052] In summary, the overall impact... The affected fluctuation range According to the fluctuation range Make a judgment on the balance.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A freight cableway transport monitoring mechanism, comprising a positioning frame (1), a support wheel (2) rotatably connected to the upper end of the positioning frame (1), and a hook (4) installed at the lower end of the positioning frame (1) for hanging heavy objects, characterized in that: The positioning frame (1) is equipped with a monitoring mechanism for monitoring the movement of goods, and the monitoring mechanism includes a monitoring box (8) installed above the side of the positioning frame (1). The monitoring box (8) is also equipped with a balance analysis module and an impact analysis module; The balance analysis module preprocesses the real-time acquired tension data, removing outliers; and calculates the average tension of each rope at the same moment. and the difference between each rope and the mean. Then compared with a preset threshold. If the difference exceeds a threshold, an imbalance is determined, a balance warning signal is generated, and the warning light on the positioning terminal and the red, yellow, and green lights on the connecting rope are activated for visual indication. Based on historical normal operating data, the distribution of tension differences is statistically analyzed, and the confidence coefficient is adjusted accordingly. Dynamically determine the allowable range of tensile force fluctuation This enables adaptive imbalance detection; The impact analysis module calculates the impact of each factor on tensile force fluctuation based on the physical model, and then synthesizes the comprehensive impact. Finally, the overall impact will be... The basic fluctuation range obtained by superimposing it on historical statistics Above, the final allowable fluctuation range for adaptive operating conditions is generated. This enables the device to dynamically adjust the imbalance judgment threshold based on real-time operating conditions.

2. The freight cableway transportation monitoring mechanism according to claim 1, characterized in that: The steps for data analysis in the balance analysis module are as follows: M1: Calculates the mean and standard deviation of the acquired tensile data, sets the fluctuation range based on the calculated mean and standard deviation, marks corresponding data outside the fluctuation range as outliers, removes outliers, and averages the remaining tensile data after outlier removal. The calculation will include the mean. As valid data; M2: The preprocessed tensile data is used as the valid tensile data. The tensile data of multiple connecting ropes for the same load are merged into a single dataset, and the average of the tensile data in the same dataset is calculated. Calculate the mean tensile force. Difference between various tensile force data ; If a preset tension difference threshold is set Or the difference in tension between the connecting ropes If this occurs, a balance warning signal will be generated.

3. A freight cableway transportation monitoring mechanism according to claim 2, characterized in that: The impact analysis module performs data analysis in the following steps: N1: Real-time acquisition and calculation of the impact of various factors on tension fluctuations, including the impact of operating speed. The influence value of wear degree of the support roller Impact value of cargo center of gravity offset Cableway span influence value Environmental wind speed influence value Influence of the elastic modulus of the connecting rope ; N2: Combine the above impact values ​​into a comprehensive impact amount. And calculate the final allowable fluctuation range of the adaptive operating condition. ,in accordance with The imbalance judgment threshold is dynamically adjusted in real time.

4. A freight cableway transportation monitoring mechanism according to claim 1, characterized in that: The monitoring box (8) is equipped with a positioning terminal (10).

5. A freight cableway transport monitoring mechanism according to claim 4, characterized in that: The monitoring mechanism also includes a signal acquisition conversion box (9) installed on the side below the positioning frame (1). A signal acquisition module (11) is installed on the upper part of the inside of the signal acquisition conversion box (9), and a power supply (12) is installed on the lower part of the inside of the signal acquisition conversion box (9). The power supply (12) is electrically connected to a weight monitoring component, which is installed on the lower part of the inside of the positioning frame (1).

6. A freight cableway transport monitoring mechanism according to claim 5, characterized in that: The weight monitoring component includes a weight sensor (7) installed at the lower end of the positioning frame (1), a positioning plate (5) is provided at the upper end of the weight sensor (7), a locking frame (6) is connected to the front end of the positioning plate (5) by bolts, and the positioning plate (5) is connected to the upper end of the hook (4) through the locking frame (6).

7. A freight cableway transport monitoring mechanism according to claim 6, characterized in that: The lower end of the positioning frame (1) is equipped with a slide bar, and the positioning plate (5) is slidably connected to the positioning frame (1) through the slide bar, and the positioning plate (5) abuts against the detection end of the weight sensor (7).

8. A freight cableway transportation monitoring mechanism according to claim 1, characterized in that: The positioning frame (1) is equipped with a positioning block (3) for positioning the cableway line, and the positioning block (3) is placed below the support wheel (2).

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