Power transmission line freight cableway operation trolley anti-cable falling device and operation safety system thereof

Abstract

The present application relates to the field of power transmission, and discloses a power transmission line freight cableway operation trolley anti-cable-off device and an operation safety system thereof, comprising a line installation assembly and a wheel frame, the line installation assembly is used for suspending installation of a line and a traction cable, both sides of the inside of the wheel frame are provided with guide wheels, the guide wheels are rollingly connected on the line, a transportation bin jib is fixedly connected below the wheel frame, a bottom end of the transportation bin jib is provided with a transportation bin for loading goods, a magnetic attraction assembly is arranged on one side of the wheel frame, guide columns are slidingly connected to the lower parts of both sides of the wheel frame, and the end of the guide column close to the line is provided with an elastic module. The present application can capture the vibration between the lining block and the line caused by sudden change of tension in real time through the tension sensing module, once the threshold is exceeded, the linkage control unit can send an instruction to the magnetic attraction assembly within 30 ms, realize extremely fast physical locking, and kill the cable-off accident in the embryonic state, solve the problem of reaction lag of the traditional mechanical anti-cable-off device.

Description

Technical Field

[0001] This invention relates to the field of overhead power transmission line cableway technology, specifically to a device for preventing cable detachment from the operating trolley of a freight cableway for power transmission lines and its operational safety system. Background Technology

[0002] In the construction of overhead power transmission lines, cableway transportation is an important means of overcoming terrain obstacles and achieving efficient transportation of large components (such as tower components and foundation materials). As a key transport unit in the cableway system, the trolley directly undertakes the task of transporting materials, and its operational safety is directly related to the safety and reliability of the entire cableway system.

[0003] However, in actual operation, the trolley often experiences derailment accidents due to the following reasons: Existing trolleys are typically directly connected to the load-bearing cable via pulley blocks or hooks, lacking effective locking or anti-derailment mechanisms; especially during heavy-load starts, braking, or cornering, sudden changes in load-bearing cable tension can easily lead to loosening of the connection points; under the influence of gravity, the trolley may experience lateral deviation, causing the pulleys to derail; external factors such as wind, ice, snow, and vibration exacerbate the fatigue and loosening of connecting components. Once derailment occurs, it can easily lead to serious consequences such as cableway system instability, material falling, and personnel injuries. Therefore, it is urgent to design an anti-derailment device and its operational safety system for the trolley of power transmission line freight cableways to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a device for preventing the cable from detaching from the operating trolley of a power transmission line freight cableway and its operating safety system, so as to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A trolley anti-derailment device for a freight cableway on a power transmission line includes a line installation assembly and a wheel frame. The line installation assembly is used to suspend the line and traction cable in the air. Guide wheels are provided on both sides of the inner interior of the wheel frame, and these guide wheels are rotatably connected to the line. A transport bin boom is fixedly connected to the lower part of the wheel frame, and a transport bin for loading goods is provided at the bottom end of the transport bin boom. A magnetic suction assembly is provided on one side of the wheel frame, and guide posts are slidably connected to the lower parts of both sides of the wheel frame. An elastic module is provided at the end of each guide post near the line, and the elastic module is sleeved on the outside of the guide post. A liner is fixedly installed at one end of the guide post, which slides in contact with the line. The end of the guide post away from the line is connected to the magnetic suction assembly. A tension sensing module is provided on the outside of the magnetic suction assembly. The tension sensing module receives the vibration when the liner moves between the liner and the line and is used to monitor the tension change of the line in real time. A linkage control unit is fixedly installed on the side of the transport bin boom. The linkage control unit is electrically connected to the tension sensing module, receives the tension signal, and controls the magnetic suction assembly to move when the tension exceeds a set threshold, so that the guide post drives the liner to extend and the liner and the line are locked together to prevent detachment.

[0006] In a preferred embodiment, the line mounting assembly includes a hinged base, a vertical plate, a cable clamp, and a limiting block; The upper end of the vertical plate is fixedly connected to the crossbeam via a hinged seat, and a cable gripper is fixedly connected to one side of its lower end. The cable is installed on the cable gripper. The bottom end of the vertical plate is fixedly connected to a limiting block, which is used to restrict the movement path of the traction cable.

[0007] In a preferred embodiment, bushings are fixedly provided on the lower sides of the wheel frame, and keyways distributed in an annular pattern are provided on the inner wall of the bushings.

[0008] In a preferred embodiment, the guide post is provided through the bushing, and the outer wall of the guide post is provided with a spline that slides with the keyway, so that the guide post can only slide along the axial direction and cannot rotate relative to it.

[0009] In a preferred embodiment, the magnetic attraction assembly includes an energized coil, a mating member, and a support arm; The energized coil is fixedly installed on the outer wall of the wheel frame, and the mating parts are fixedly connected to the ends of the guide posts on both sides through the support arms fixed on both sides. When the linkage control unit energizes the energized coil, an electromagnetic attraction is generated between the energized coil and the mating component, driving the guide post to move axially.

[0010] In a preferred embodiment, the elastic module includes a spring, an adjusting nut, and a threaded portion; The spring is sleeved on the guide post, with one end abutting against the wheel frame and the other end abutting against the adjusting nut. The adjusting nut is threadedly engaged with the threaded part at the end of the guide post, and the preload of the spring can be adjusted by rotating the adjusting nut.

[0011] In a preferred embodiment, the guide wheel includes a wheel body, a spindle, a groove, and an anti-detachment plate; The wheel body is rotatably mounted on the wheel frame via a spindle. The groove is formed on the outer circumferential surface of the wheel body for cooperating with the line. The anti-detachment plate is detachably mounted on both sides of the wheel body to prevent the line from coming out of the groove.

[0012] In a preferred embodiment, the tension sensing module is a strain gauge sensor or a piezoelectric sensor, which is embedded in the force-bearing part of the magnetic bracket and the guide post, and the response time is no more than 10ms.

[0013] In a preferred embodiment, the linkage control unit includes a signal amplification circuit, a microcontroller, and a drive circuit. The microcontroller presets a tension threshold, and when the received tension signal exceeds the threshold, it outputs a power-on command to the magnetic suction component within 30ms.

[0014] In a preferred embodiment, the bushing has an arc surface structure that matches the arc surface of the circuit. It is made of wear-resistant alloy material and has a microgroove structure on its surface.

[0015] The operational safety system for the anti-derailment device, based on the aforementioned anti-derailment device for the freight cableway of the power transmission line, includes: several sets of the aforementioned anti-derailment devices, a wireless communication module, and a remote monitoring center. The anti-derailment device is responsible for collecting tension and vibration data in real time and performing local locking; Wireless communication module: The linkage control unit integrates an IoT communication chip to upload status information such as tension abnormality events, number of locking attempts, and remaining battery power in real time; Monitoring Center: Equipped with a digital twin visualization interface, it can display the distribution and health status of all the trolleys along the cableway, and supports remote threshold setting and manual emergency stop command issuance; When a car triggers the anti-derailment lock due to extreme weather, the system not only performs physical braking on the car, but also immediately pushes a level one alarm to the monitoring center through the communication module. The monitoring center can automatically control the drive device of the traction cable to reduce speed or stop the machine globally to prevent subsequent cars from rear-ending each other or causing secondary accidents. It also includes intelligent diagnostic logic, which is stored in the flash memory inside the microcontroller of the linkage control unit, or stored on a separate computer-readable storage medium. When the intelligent diagnostic logic program is executed by the processor of the linkage control unit, the following steps are achieved: S1. Multi-source signal acquisition: Simultaneously acquire the vibration signal of the tension sensing module and the displacement signal of the guide column at a sampling rate of 1000Hz. S2. Signal preprocessing and feature extraction: The built-in FIR filter is used to filter out wind noise and low-frequency jitter during normal operation, and the spectral features of the vibration signal are extracted by fast Fourier transform to identify whether it contains specific high-frequency components that are precursors to desiccation. S3. Dynamic threshold decision: Instead of using a single fixed threshold, it combines the current weight of the transport warehouse, that is, it indirectly calculates the weight through the deformation of the spring, and uses a lookup table method to dynamically correct the trigger threshold, so as to achieve an adaptive anti-detachment strategy of "strict control under heavy load and sensitivity under light load". S4. Command Output: If the situation is deemed dangerous, a PWM drive signal will be output to the magnetic component within 30ms, and the wear level of the pad will be determined based on the current feedback after locking.

[0016] In the above technical solution, the anti-derailment device and its operational safety system for the freight cableway of power transmission lines provided by the present invention have the following beneficial effects: (1) The present invention captures the vibration caused by the sudden change in tension between the liner and the line in real time through the tension sensing module. Once the threshold is exceeded, the linkage control unit can send a command to the magnetic attraction component within 30ms to achieve rapid physical locking, nip the derailment accident in the bud, and solve the problem of the slow response of traditional mechanical anti-derailment devices.

[0017] (2) The outer wall of the guide post is provided with a spline, which slides in conjunction with the keyway in the bushing, so that the guide post can only slide along the axis and cannot rotate relative to each other during the extension and retraction process. This not only ensures that the arc surface at the front end of the bushing always fits precisely with the arc surface of the line, avoiding uneven wear, but also integrates the entire anti-derailment device inside the wheel frame, without taking up extra space and without affecting the normal turning and operation of the cableway.

[0018] (3) The spring in the elastic module can not only provide buffer when locked, but also drive the guide column to automatically reset after the tension returns to normal, so as to achieve locking and automatic recovery. At the same time, the liner is made of wear-resistant alloy and has a micro-groove structure, which greatly extends the service life of the device and reduces the frequency and difficulty of cableway operation and maintenance in high mountain and steep ridge areas. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the structure with a bracket installation state provided for an embodiment of the anti-detachment device for the freight cableway of the power transmission line and its operation safety system of the present invention.

[0021] Figure 2This is a side view of the line installation component structure provided in an embodiment of the anti-detachment device for the freight cableway operating trolley of the power transmission line and its operation safety system of the present invention.

[0022] Figure 3 This is a schematic diagram of the wheel frame installation structure on the line and traction cable, provided in an embodiment of the anti-derailment device and its operation safety system for the freight cableway of the power transmission line according to the present invention.

[0023] Figure 4 This is a schematic diagram of the wheel frame structure provided for an embodiment of the anti-detachment device and its operational safety system for the freight cableway of the power transmission line according to the present invention.

[0024] Figure 5 This is a schematic diagram of the elastic module and guide column structure provided in an embodiment of the anti-detachment device for the freight cableway of the power transmission line and its operation safety system of the present invention.

[0025] Figure 6 This is a schematic diagram of the elastic module structure provided in an embodiment of the anti-detachment device for the freight cableway of the power transmission line and its operational safety system of the present invention.

[0026] Figure 7 This is a schematic diagram of the guide wheel structure provided in an embodiment of the anti-detachment device for the freight cableway of the power transmission line and its operational safety system of the present invention.

[0027] 1. Line mounting assembly; 11. Hinge seat; 12. Vertical plate; 13. Cable gripper; 14. Limit block; 2. Wheel frame; 21. Bushing; 22. Keyway; 3. Transport compartment boom; 4. Linkage control unit; 5. Tension sensing module; 6. Magnetic suction assembly; 61. Energizing coil; 62. Pairing part; 63. Support arm; 7. Guide post; 71. Spline; 8. Elastic module; 81. Spring; 82. Adjusting nut; 83. Threaded part; 9. Liner; 10. Guide wheel; 101. Wheel body; 102. Mandrel; 103. Groove; 104. Anti-detachment plate. Detailed Implementation

[0028] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0029] The anti-detachment device for the freight cableway running trolley of the power transmission line provided in this embodiment of the invention: like Figure 1 and 2As shown, the system includes a line mounting assembly 1 and a wheel frame 2. The line mounting assembly 1 is used to suspend the line and traction cable in the air. The line mounting assembly 1 includes a hinge seat 11, a vertical plate 12, a cable gripper 13, and a limiting block 14. The upper end of the vertical plate 12 is fixedly connected to the crossbeam through the hinge seat 11, and the lower end of the vertical plate 12 is fixedly connected to the cable gripper 13. The line is mounted on the cable gripper 13. The bottom end of the vertical plate 12 is fixedly connected to the limiting block 14, which is used to restrict the movement path of the traction cable.

[0030] In this embodiment, the cable and traction cable of the cable installation assembly 1 are used for suspended installation, and columns are fixed at both ends of the crossbeam. The hinge seat 11 at the upper end of the vertical plate 12 is fixed to the crossbeam, the cable clamp 13 is used to clamp the cable (i.e., the load-bearing cable), and the traction cable path is straightened by the limiting block 14. In the unloaded state, the trolley is driven to slide along the cable using the traction cable.

[0031] like Figure 3 and 7 As shown, guide wheels 10 are provided on both sides of the inner side of the wheel frame 2, and the guide wheels 10 are rotatably connected to the line. Each guide wheel 10 includes a wheel body 101, a spindle 102, a groove 103, and an anti-detachment plate 104. The wheel body 101 is rotatably mounted on the wheel frame 2 via the spindle 102. The groove 103 is formed on the outer circumference of the wheel body 101 for engaging with the line. The anti-detachment plate 104 is detachably installed on both sides of the wheel body 101 to prevent the line from detaching from the groove 103. A transport bay boom 3 is fixedly connected to the bottom of the wheel frame 2, and a transport bay for loading goods is provided at the bottom end of the transport bay boom 3. In this embodiment, the guide wheel 10 is the main load-bearing component for the trolley to slide along the track. The radius of curvature of the roller groove 103 is slightly larger than the radius of the track to maximize the contact area and reduce local pressure. The anti-detachment plate 104 is fixed to both sides of the wheel body 101 by bolts, forming a semi-enclosed wrapping structure, which is the first line of defense against physical detachment. The transport compartment boom 3 extends downward to lower the center of gravity of the transport compartment as much as possible. This not only improves the anti-tipping ability of the trolley during operation, but also makes the inertial torque of the entire device more stable when sudden tension fluctuations occur, facilitating the subsequent locking action.

[0032] like Figure 4 , 5 As shown in Figure 6, a magnetic attraction assembly 6 is provided on one side of the wheel frame 2. The magnetic attraction assembly 6 includes an energized coil 61, a mating member 62, and a support arm 63. The energized coil 61 is fixedly installed on the outer wall of the wheel frame 2, and the mating member 62 is fixedly connected to the ends of the guide posts 7 on both sides through the support arms 63 fixed on both sides. When the linkage control unit 4 energizes the energized coil 61, an electromagnetic attraction force is generated between the energized coil 61 and the mating member 62, driving the guide post 7 to move axially.

[0033] In this embodiment, the energized coil 61 is wound with enameled wire of high magnetic permeability and is normally de-energized, thus generating no additional energy consumption. The mating component 62 is preferably made of soft magnetic material (such as industrial pure iron) to ensure that it can be quickly magnetized and attracted upon energization. The support arm 63 is made of lightweight and high-strength aluminum alloy. It acts like a bridge, connecting the guide posts 7 on both sides into a synchronously moving whole, ensuring that the left and right side pads 9 can simultaneously and equally press the line, preventing the trolley from tipping over due to uneven force on one side.

[0034] like Figure 4 , 5 As shown in Figure 6, guide posts 7 are slidably connected to the lower parts of both sides of the wheel frame 2. Bushings 21 are fixedly installed on the lower parts of both sides of the wheel frame 2. The inner wall of the bushings 21 is provided with annularly distributed keyways 22. The guide posts 7 are installed through the bushings 21. The outer wall of the guide posts 7 is provided with splines 71 that slide in conjunction with the keyways 22, so that the guide posts 7 can only slide axially and cannot rotate relative to each other. A spring module 8 is provided at one end of the guide post 7 near the track. The spring module 8 is sleeved on the outside of the guide post 7. The spring module 8 includes a spring 81, an adjusting nut 82, and a threaded part 83. The spring 81 is sleeved on the guide post 7, with one end abutting against the wheel frame 2 and the other end abutting against the adjusting nut 82. The adjusting nut 82 is threadedly engaged with the threaded part 83 at the end of the guide post 7. The preload of the spring 81 can be adjusted by rotating the adjusting nut 82. A bushing 9 is fixedly installed at the end of the guide post 7. The bushing 9 slides in contact with the circuit. The end of the guide post 7 away from the circuit is connected to the magnetic suction assembly 6. The bushing 9 has an arc surface structure, which is adapted to the arc surface of the circuit. It is made of wear-resistant alloy material and has a microgroove structure on its surface. The microgroove structure on the surface of the bushing 9 can not only remove chips (such as rainwater and mud), but also generate a micro-vacuum effect like a "suction cup" when pressed, which greatly enhances the coefficient of friction.

[0035] In this embodiment, the cooperation between the spline 71 and the keyway 22 forces the guide post 7 to move only in a straight line, completely eliminating the rotation of the guide post 7 during the extension and retraction process. This ensures that the bushing 9 at the front end of the guide post 7 always maintains the optimal arc-shaped orientation facing the line. The spring 81 provides preload under normal conditions, allowing the bushing 9 to lightly contact the line to sense vibration. The presence of the adjusting nut 82 allows on-site maintenance personnel to flexibly adjust the initial compression of the spring 81 according to different thicknesses of the load-bearing cable or different transport loads, thereby changing the trigger sensitivity.

[0036] like Figure 3 and 4As shown, a tension sensing module 5 is installed on the outer side of the magnetic suction assembly 6. The tension sensing module 5 receives the vibration when the liner 9 moves between it and the line and is used to monitor the tension change of the line in real time. The tension sensing module 5 is a strain gauge sensor or a piezoelectric sensor, embedded in the force-bearing parts of the magnetic suction bracket 6 and the guide post 7, with a response time of no more than 10ms. A linkage control unit 4 is fixedly installed on the side of the transport bin boom 3. The linkage control unit 4 is electrically connected to the tension sensing module 5, receives the tension signal, and controls the magnetic suction assembly 6 to move when the tension exceeds the set threshold, so that the guide post 7 drives the liner 9 to extend and the liner 9 and the line are locked together to prevent detachment. The linkage control unit 4 includes a signal amplification circuit, a microcontroller, and a drive circuit. The microcontroller presets the tension threshold. When the received tension signal exceeds the threshold, it outputs a power-on command to the magnetic suction assembly 6 within 30ms.

[0037] In this embodiment, the tension sensing module 5 is directly embedded in the force path, avoiding signal attenuation in intermediate transmission links. The linkage control unit 4 integrates a filtering algorithm that can intelligently distinguish between minor bumps during normal operation and truly dangerous tension changes (such as rope breakage or jamming), effectively preventing malfunctions. The 30ms response time means that the device has already completed locking within the first few peaks of the violent shaking of the supporting cable, gaining golden time for safety.

[0038] The safety system for the operation of the anti-detachment device is based on the anti-detachment device of the freight cableway operating trolley of the power transmission line. The system includes: several sets of the aforementioned anti-detachment devices (as edge sensing nodes), wireless communication modules (such as LoRa or 4G DTU), and a remote monitoring center (cloud or local server). Edge nodes: These are the anti-derailment devices installed on each of the running trolleys, responsible for collecting tension and vibration data in real time and performing local locking. Wireless communication module: The linkage control unit 4 integrates an IoT communication chip to upload status information such as tension abnormality events, number of locking attempts, and remaining battery power in real time; Monitoring Center: Equipped with a digital twin visualization interface, it can display the distribution and health status of all the trolleys along the cableway, and supports remote threshold setting and manual emergency stop command issuance; When a car triggers its anti-derailment lock due to extreme weather, the system not only applies physical braking to the car but also immediately sends a Level 1 alarm to the monitoring center via the communication module. The monitoring center can then automatically control the drive unit of the traction cable to reduce speed or stop the machine globally, preventing subsequent cars from rear-ending each other or causing secondary accidents. This "end-edge-cloud" collaborative mechanism solves the problem of each car operating independently and information silos in traditional cableways.

[0039] To give the linkage control unit 4 a more powerful data analysis capability, the present invention also includes intelligent diagnostic logic, which is embedded in the flash memory inside the microcontroller of the linkage control unit 4, or stored on an independent computer-readable storage medium. When the intelligent diagnostic logic program is executed by the processor of the linkage control unit 4, the following steps are performed: S1. Multi-source signal acquisition: Simultaneously acquire the vibration signal of the tension sensing module 5 and the displacement signal of the guide post 7 at a sampling rate of 1000Hz. S2. Signal preprocessing and feature extraction: The built-in FIR filter is used to filter out wind noise and low-frequency jitter during normal operation, and the spectral features of the vibration signal are extracted by fast Fourier transform to identify whether it contains specific high-frequency components that are precursors to desiccation. S3, Dynamic Threshold Decision: Instead of using a single fixed threshold, it combines the current weight of the transport warehouse, that is, indirectly calculated through the deformation of spring 81, and dynamically corrects the trigger threshold using a lookup table method to achieve an adaptive anti-detachment strategy of "strict control under heavy load and sensitivity under light load". S4. Command output: If it is determined to be dangerous, a PWM drive signal will be output to the magnetic component 6 within 30ms, and the wear degree of the pad 9 will be judged based on the current feedback after locking.

[0040] By incorporating complex filtering algorithms and adaptive logic into the storage medium, this invention addresses the pain point of "rigid thresholds" in traditional mechanical devices. For example, when going downhill under no-load conditions, the system automatically lowers the trigger threshold to improve sensitivity; while when going uphill under full load conditions, it appropriately relaxes the threshold to avoid frequent malfunctions, demonstrating a very high level of intelligence.

[0041] Combining the aforementioned three-dimensional packaging of equipment (hardware), system (network), and medium (algorithm), this invention presents the following profound innovative features and industrial significance: This integrated "perception-decision-execution" embedded design eliminates communication delays, truly achieving self-rescue within the millisecond-level window of derailment; with the advancement of digital transformation in power grid construction, this intelligent vehicle with built-in perception and communication capabilities will become an important component of "smart construction sites," providing key technical support for standardized and less-manned operations in overhead transmission line construction.

[0042] Operating Procedures: Normal Operation: When the trolley moves smoothly along the track, the guide wheel 10 rolls on the track, and the bushing 9, under the preload of the elastic module 8 (spring 81), has its curved surface lightly touching or very close to the track surface, sliding along with the trolley. At this time, the vibration frequency collected by the tension sensing module 5 is within the normal threshold range, the linkage control unit 4 does not trigger the magnetic attraction component, the guide post 7 remains stationary, and the trolley has normal degrees of freedom of movement.

[0043] Tension Sudden Change Sensing: When encountering heavy load start-up, emergency braking, strong wind interference, or steep slope bends, the line tension will surge instantaneously and generate high-frequency vibration. This vibration is transmitted to the guide post 7 through the bushing 9. The tension sensing module 5 (piezoelectric / strain gauge) quickly captures this abnormal signal that exceeds the preset threshold and converts it into an electrical signal, which is then transmitted to the linkage control unit 4.

[0044] Electromagnetic drive locking: After receiving an over-threshold signal, the microcontroller in the linkage control unit 4 immediately outputs current to the energized coil 61 of the magnetic attraction component 6 through the drive circuit. The energized coil 61 instantly generates a strong magnetic field, which produces a huge electromagnetic attraction force on the mating part 62, overcoming the resistance of the spring 81 and pulling the support arm 63 and the guide posts 7 on both sides to move axially in the direction of the line quickly.

[0045] Friction-based anti-derailment: After the guide post 7 extends, the bushing 9 at its end is strongly pressed against the arc surface of the track under magnetic drive. Because the arc surface of the bushing 9 perfectly matches the track and has microgrooves on its surface to increase friction, the two generate a large sliding friction force, forcibly locking the running trolley to the track. Even if the guide wheel 10 accidentally derails, the strong friction between the bushing 9 and the track can hold the entire trolley, preventing it from falling from a height.

[0046] Automatic Reset: Once the dangerous condition is resolved (e.g., tension returns to normal or the trolley enters a smooth section of road), the signal from tension sensing module 5 returns to a safe value. The linkage control unit 4 cuts off the current to the energized coil 61, the electromagnetic attraction disappears, the guide post 7 is pulled back to its original position under the elastic force of spring 81, the pad 9 disengages from the line, and the trolley resumes normal operation.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A device for preventing derailment of a freight cableway trolley on a power transmission line, comprising a line installation assembly (1) and a wheel frame (2), characterized in that, The line installation assembly (1) is used to suspend the line and traction cable for installation. Guide wheels (10) are provided on both sides of the inner side of the wheel frame (2), and the guide wheels (10) are tumbling connected to the line. A transport bin boom (3) is fixedly connected to the bottom of the wheel frame (2), and a transport bin for loading goods is provided at the bottom end of the transport bin boom (3). A magnetic suction assembly (6) is provided on one side of the wheel frame (2). Guide posts (7) are slidably connected to the lower parts of both sides of the wheel frame (2). An elastic module (8) is provided at the end of the guide post (7) near the line. The elastic module (8) is sleeved on the outside of the guide post (7). A bushing (9) is fixedly installed at the end of the guide post (7). The bushing (9) has an arc surface structure, and the arc surface is similar to the arc surface of the line. The adapter is made of wear-resistant alloy material and has a micro-groove structure on the surface. The liner (9) slides in contact with the line. The end of the guide post (7) away from the line is connected to the magnetic suction assembly (6). The outside of the magnetic suction assembly (6) is provided with a tension sensing module (5). The tension sensing module (5) receives the vibration when the liner (9) moves between the line and the line and is used to monitor the tension change of the line in real time. The side of the transport bin boom (3) is fixedly installed with a linkage control unit (4). The linkage control unit (4) is electrically connected to the tension sensing module (5), receives the tension signal, and controls the magnetic suction assembly (6) to move when the tension exceeds the set threshold, so that the guide post (7) drives the liner (9) to extend and the liner (9) and the line are locked together.

2. The anti-derailment device for the freight cableway of a power transmission line according to claim 1, characterized in that, The line installation assembly (1) includes a hinge base (11), a vertical plate (12), a cable gripper (13), and a limiting block (14). The upper end of the vertical plate (12) is fixedly connected to the crossbeam via a hinge seat (11), and a cable gripper (13) is fixedly connected to one side of its lower end. The cable is installed on the cable gripper (13). The bottom end of the vertical plate (12) is fixedly connected to a limiting block (14), which is used to limit the movement path of the traction cable.

3. The anti-derailment device for the freight cableway of a power transmission line according to claim 1, characterized in that, Bushings (21) are fixedly provided on the lower sides of the wheel frame (2), and keyways (22) are provided on the inner wall of the bushings (21) in annular distribution.

4. The anti-derailment device for the freight cableway running trolley of the transmission line according to claim 3, characterized in that, The guide post (7) is installed through the bushing (21). The outer wall of the guide post (7) is provided with a spline (71) that slides with the keyway (22), so that the guide post (7) can only slide along the axial direction and cannot rotate relative to it.

5. The anti-derailment device for the freight cableway running trolley of the transmission line according to claim 1, characterized in that, The magnetic attraction assembly (6) includes an energized coil (61), a mating member (62), and a support arm (63). The energized coil (61) is fixedly installed on the outer wall of the wheel frame (2), and the mating part (62) is fixedly connected to the ends of the guide posts (7) on both sides through the support arms (63) fixed on both sides. When the linkage control unit (4) energizes the energized coil (61), an electromagnetic attraction is generated between the energized coil (61) and the mating part (62), driving the guide post (7) to move axially.

6. The anti-derailment device for the freight cableway running trolley of the transmission line according to claim 1, characterized in that, The elastic module (8) includes a spring (81), an adjusting nut (82), and a threaded part (83). The spring (81) is sleeved on the guide post (7), with one end abutting against the wheel frame (2) and the other end abutting against the adjusting nut (82). The adjusting nut (82) is threadedly engaged with the threaded part (83) at the end of the guide post (7). The preload of the spring (81) can be adjusted by rotating the adjusting nut (82).

7. The anti-derailment device for the freight cableway of a power transmission line according to claim 1, characterized in that, The guide wheel (10) includes a wheel body (101), a spindle (102), a groove (103), and an anti-detachment plate (104). The wheel body (101) is rotatably mounted on the wheel frame (2) via a spindle (102). The groove (103) is opened on the outer circumferential surface of the wheel body (101) for cooperating with the line. The anti-detachment plate (104) is detachably installed on both sides of the wheel body (101) to prevent the line from coming out of the groove (103).

8. The anti-derailment device for the freight cableway of a power transmission line according to claim 1, characterized in that, The tension sensing module (5) is a strain gauge sensor or a piezoelectric sensor, which is embedded in the force-bearing part of the magnetic bracket (6) and the guide post (7) and has a response time of no more than 10ms.

9. The anti-derailment device for the freight cableway running trolley of the transmission line according to claim 1, characterized in that, The linkage control unit (4) includes a signal amplification circuit, a microcontroller and a drive circuit. The microcontroller presets a tension threshold. When the received tension signal exceeds the threshold, it outputs a power-on command to the magnetic suction component (6) within 30ms.

10. A safety system for the operation of an anti-detour device, based on the anti-detour device for the freight cableway of a power transmission line as described in any one of claims 1-9, characterized in that, The system includes: Several sets of anti-detachment devices, wireless communication modules, and remote monitoring centers; The anti-derailment device is responsible for collecting tension and vibration data in real time and performing local locking; Wireless communication module: The linkage control unit (4) integrates an Internet of Things communication chip to upload status information such as tension abnormal events, number of locking times, and remaining power in real time; Monitoring Center: Equipped with a digital twin visualization interface, it can display the distribution and health status of all the trolleys along the cableway, and supports remote threshold setting and manual emergency stop command issuance; When a car triggers the anti-derailment lock due to extreme weather, the system not only performs physical braking on the car, but also immediately pushes a level one alarm to the monitoring center through the communication module. The monitoring center can automatically control the drive device of the traction cable to reduce speed or stop the machine globally to prevent subsequent cars from rear-ending each other or causing secondary accidents. It also includes intelligent diagnostic logic, which is stored in the flash memory inside the microcontroller of the linkage control unit (4), or stored on a separate computer-readable storage medium. When the intelligent diagnostic logic program is executed by the processor of the linkage control unit (4), the following steps are performed: S1. Multi-source signal acquisition: Simultaneously acquire the vibration signal of the tension sensing module (5) and the displacement signal of the guide column (7) at a sampling rate of 1000Hz; S2. Signal preprocessing and feature extraction: The built-in FIR filter is used to filter out wind noise and low-frequency jitter during normal operation, and the spectral features of the vibration signal are extracted by fast Fourier transform to identify whether it contains specific high-frequency components that are precursors to desiccation. S3, Dynamic threshold decision: Instead of using a single fixed threshold, it combines the current weight of the transport warehouse, that is, it indirectly calculates the weight by the deformation of the spring (81), and uses the lookup table method to dynamically correct the trigger threshold, so as to realize the adaptive anti-detachment strategy of "strict control under heavy load and sensitivity under light load". S4, Command Output: If it is determined to be dangerous, a PWM drive signal is output to the magnetic suction component (6) within 30ms, and the wear degree of the pad (9) is judged based on the current feedback after locking.

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