A cable transport mechanism and a cable transport method

Abstract

The application discloses a cable conveying mechanism and a cable conveying method. The real-time conveying speed of the cable and the running speed of the track are collected by two speed measurement units respectively, so that the cable slip state can be accurately identified. Different slip causes are distinguished by combining with the traction speed of the front-end device, and the radial clamping force or the running speed of the track is adjusted correspondingly, so that the cable insulation layer is prevented from being damaged by single increase of the clamping force. In addition, the clamping force closed-loop regulation and control are realized by matching the clamping force detection unit, so that the conveying friction is ensured and excessive clamping is prevented. The scheme in the embodiment of the application improves the accuracy of slip identification and treatment as a whole, and takes into account the conveying efficiency and the cable protection effect, effectively improves the problems of cable slip wear and insulation layer pressure damage, and enhances the operation stability and reliability of the cable laying operation.

Description

Technical Field

[0001] This application relates to the field of cable equipment, and in particular to a cable conveying mechanism and a cable conveying method. Background Technology

[0002] Existing cable conveyors still have insufficient overall conveying stability during cable laying operations, and the identification and handling of slippage phenomena are not effective, which can easily lead to problems such as cable slippage and wear, and insulation layer damage due to pressure. Summary of the Invention

[0003] This application aims to provide a cable conveying mechanism and cable conveying method that can improve the accuracy of slippage identification and the effectiveness of slippage post-processing.

[0004] The cable conveying mechanism according to a first aspect embodiment of this application includes: Base frame; Two sets of oppositely arranged conveyor track assemblies are slidably mounted on the base frame, and the two sets of conveyor track assemblies can slide relative to each other; A conveying mechanism for driving the track movement of the two sets of conveying track assemblies; A clamping mechanism is used to drive the two sets of the conveyor track assemblies closer to or further apart from each other; A clamping force detection unit is used to detect the radial clamping force of the tracks of the two sets of conveyor track assemblies on the cable; The first speed measuring unit is used to detect the real-time transmission speed of the cable; The second speed measuring unit is used to detect the track speed of the conveyor track assembly. The control unit is electrically connected to the conveying mechanism, the clamping mechanism, the clamping force detection unit, the first speed measuring unit, and the second speed measuring unit, respectively. It is used to acquire the real-time conveying speed, the track running speed, the radial clamping force, and the traction speed of the cable by the front-end equipment. Based on the radial clamping force, it adjusts the radial clamping force of the two sets of conveying track assemblies on the cable. Based on the real-time conveying speed, the track running speed, and the traction speed, it adjusts the radial clamping force of the two sets of conveying track assemblies on the cable, or adjusts the track running speed of the tracks of the two sets of conveying track assemblies.

[0005] A cable conveying method according to a second aspect of this application, applied to a control unit in a cable conveying mechanism as described in a first aspect embodiment, the cable conveying method comprising: Obtain the real-time transmission speed of the cable detected by the first speed measuring unit; The track speed of the conveyor track assembly is obtained by the second speed measuring unit. The radial clamping force of the two sets of conveyor track assemblies on the cable is obtained by the clamping force detection unit. The cable transmission slippage state is determined based on the real-time conveying speed and the track operating speed. When the cable transmission slippage state indicates that the transmission cable is slipping, the traction speed of the cable by the front-end equipment is obtained; Determine the difference between the traction speed and the track operating speed; Based on the traction speed difference, adjust the radial clamping force of the two sets of conveyor track assemblies on the cable, or adjust the track running speed of the two sets of conveyor track assemblies, so that the transmission speed difference between the real-time conveying speed and the track running speed is within a preset anti-slip speed range.

[0006] The cable conveying mechanism and method of this application embodiment collect real-time cable conveying speed and track operating speed through dual speed measuring units, which can accurately identify cable slippage. By combining the traction speed of the front-end equipment to distinguish different causes of slippage, the radial clamping force or track operating speed is adjusted accordingly to prevent damage to the cable insulation layer from excessive clamping force. Furthermore, a clamping force detection unit is used to achieve closed-loop control of the clamping force, ensuring conveying friction while preventing over-clamping. The solution in this application embodiment improves the accuracy of slippage identification and handling, balances conveying efficiency and cable protection, effectively improves the problems of cable slippage wear and insulation layer pressure damage, and enhances the operational stability and reliability of cable laying operations.

[0007] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description

[0008] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 A side view of the cable conveying mechanism provided in an embodiment of this application; Figure 2 A top view of the cable conveying mechanism provided in an embodiment of this application; Figure 3 A system block diagram of a cable conveying mechanism provided in an embodiment of this application; Figure 4 A flowchart illustrating a cable delivery method provided in an embodiment of this application.

[0009] Figure label: Base frame 100; conveyor track assembly 200; clamping force detection unit 300; first speed measuring unit 400; second speed measuring unit 500; control unit 600; lead screw 710; clamping motor 721; driving gear 722; driven gear 723; human-machine interaction unit 800. Detailed Implementation

[0010] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0011] In the description of this application, the use of terms such as "first," "second," etc., is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0012] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0013] In the description of this application, it should be noted that, unless otherwise explicitly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0014] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this application, not all embodiments.

[0015] See Figures 1 to 3 As shown, one embodiment of this application provides a cable conveying mechanism, which includes: Base frame 100; Two sets of oppositely arranged conveyor track assemblies 200 are slidably mounted on the base frame 100, and the two sets of conveyor track assemblies 200 can slide relative to each other; A conveying mechanism for driving the movement of the tracks of two sets of conveyor track assemblies 200; A clamping mechanism is used to drive the two sets of conveyor track assemblies 200 closer to or further apart from each other; The clamping force detection unit 300 is used to detect the radial clamping force of the tracks of the two sets of conveyor track assemblies 200 on the cable; The first speed measuring unit 400 is used to detect the real-time transmission speed of the cable; The second speed measuring unit 500 is used to detect the track speed of the conveyor track assembly 200. The control unit 600 is electrically connected to the conveying mechanism, clamping mechanism, clamping force detection unit 300, first speed measuring unit 400, and second speed measuring unit 500, respectively. It is used to acquire the real-time conveying speed, track running speed, radial clamping force, and the traction speed of the cable by the front-end equipment. Based on the radial clamping force, it adjusts the radial clamping force of the two sets of conveying track assemblies 200 on the cable. Based on the real-time conveying speed, track running speed, and traction speed, it adjusts the radial clamping force of the two sets of conveying track assemblies 200 on the cable, or adjusts the track running speed of the tracks of the two sets of conveying track assemblies 200.

[0016] In this embodiment, dual speed measuring units collect real-time cable conveying speed and track operating speed to accurately identify cable slippage. Combining this with the traction speed of the front-end equipment distinguishes different causes of slippage, allowing for corresponding adjustments to the radial clamping force or track operating speed to prevent damage to the cable insulation layer from excessive clamping force. Furthermore, a clamping force detection unit 300 enables closed-loop control of the clamping force, ensuring adequate conveying friction while preventing over-clamping. The solution in this embodiment improves the overall accuracy of slippage identification and handling, balancing conveying efficiency and cable protection, effectively mitigating cable slippage wear and insulation layer pressure damage, and enhancing the operational stability and reliability of cable laying operations.

[0017] The aforementioned base frame 100 serves as the load-bearing frame base for the entire equipment, providing installation space and support for all conveying, clamping, detection, and control components. Sufficient mounting cavities are provided inside the base frame 100.

[0018] The two sets of conveyor track assemblies 200 are slidably mounted on the base frame 100, and can slide relatively closer or further apart along a direction perpendicular to the cable conveying direction. A cable conveying channel is formed between the two sets of assemblies, and the cable is driven forward by the friction between the track and the outer surface of the cable. Each set of conveyor track assemblies 200 includes a track frame, a mounting bracket, a drive sprocket, a driven sprocket, and a conveyor track surrounding the sprocket. The bottom of the mounting bracket cooperates with the base frame 100 through a linear slide rail, ensuring a smooth and jam-free sliding process.

[0019] The aforementioned conveying mechanism provides power for the operation of the conveyor track assembly 200, driving the track to rotate continuously to complete the cable conveying. The conveying mechanism includes a conveyor motor, a gearbox, and a drive shaft. After the conveyor motor is reduced in speed and torque is increased by the gearbox, it drives the drive sprocket to rotate through the drive shaft, thereby driving the conveyor track to rotate at a constant speed.

[0020] The aforementioned clamping mechanism is used to drive the two sets of conveyor track assemblies 200 to move closer or further apart, thereby clamping and releasing the cable and adjusting the radial clamping force of the track on the cable. Specifically, the transmission components of the clamping mechanism are arranged laterally along the base frame 100, and the power output ends are respectively connected to the mounting brackets of the two sets of conveyor track assemblies 200, which can synchronously drive the two sets of assemblies to move towards or away from each other, so that the cable is always in the center position of the conveying channel.

[0021] The clamping force detection unit 300 is used to detect the radial clamping force of the two sets of conveyor track assemblies 200 on the cable in real time, providing data for closed-loop control of the clamping force. During installation, the clamping force detection unit 300 can be a pressure sensor, which is set between the mounting bracket of the conveyor track assembly 200 and the track frame. It can directly collect the radial force of the track on the cable, and the detection data is transmitted to the control unit 600 in real time.

[0022] The aforementioned first speed measuring unit 400 is used to detect the real-time conveying speed of the cable, directly acquiring the actual traveling speed of the cable as a true benchmark for judging the conveying status. Specifically, the first speed measuring unit 400 is installed at the outlet or inlet of the cable conveying channel, and can directly contact the cable surface to collect the rotation speed signal, preventing speed deviation caused by track slippage.

[0023] The aforementioned second speed measuring unit 500 is used to detect the track operating speed of the conveyor track assembly 200, collect the theoretical driving speed of the track, and reflect the driving output status of the equipment. Specifically, the speed signal of the second speed measuring unit 500 can be taken from the encoder on the drive shaft of the conveyor mechanism, or from the frequency output signal of the conveyor motor inverter, which can accurately reflect the theoretical operating speed of the track, and can also reflect the theoretical transmission speed of the cable.

[0024] The aforementioned control unit 600 can acquire the real-time cable conveying speed, track speed, and radial clamping force, and can also acquire the traction speed of the cable by the front-end equipment. By combining multi-dimensional data, it can determine the conveying status and select to adjust the radial clamping force or the track speed according to the actual working conditions to keep the cable conveying status stable.

[0025] In some implementations, reference Figure 1 The clamping mechanism includes: The lead screw 710 is rotatably mounted above the base frame 100 via a rotating support structure and is arranged parallel to the base frame 100. Two lead screws 710 nuts are respectively connected to two sets of conveyor track assemblies 200. The two lead screws 710 nuts are used to drive the two sets of conveyor track assemblies 200 to move closer or further away under the drive of the lead screws 710. The clamping drive unit is mounted on the base frame 100 and is used to drive the lead screw 710 to rotate.

[0026] The aforementioned lead screw 710 is a transmission rod for clamping action, achieving synchronous opening and closing of the two sets of conveyor track assemblies 200 through a forward and reverse thread structure. During actual assembly, both ends of the lead screw 710 are rotatably supported on the side wall of the base frame 100 via bearing seats. The rod body has two sections of threads with opposite directions. Two nuts for the lead screw 710 are threaded onto these two reverse threads and are fixedly connected to the mounting brackets of the two sets of conveyor track assemblies 200. When the clamping drive unit drives the lead screw 710 to rotate, the two nuts for the lead screw 710 move synchronously in opposite directions, causing the two sets of conveyor track assemblies 200 to move closer together or further apart, completing the clamping and releasing action of the cable. The entire clamping mechanism fully utilizes the original internal space layout of the base frame 100, without requiring additional external dimensions, and is suitable for the layout requirements of confined construction scenarios such as narrow cable wells and cable trays.

[0027] In this embodiment, a synchronous opening and closing structure with forward and reverse lead screw 710 transmission is adopted. The two sets of tracks move at the same distance, which can ensure that the cable is always clamped in the center and prevent the cable from being damaged by bias. The lead screw 710 transmission has high precision and good self-locking performance, and the clamping force adjustment is stable and controllable. The built-in layout does not increase the size of the equipment and improves the equipment's adaptability to different scenarios.

[0028] In some implementations, reference Figure 1 The clamping drive unit includes: The clamping motor 721 is mounted on the base frame 100; The drive gear 722 is mounted on the output shaft of the clamping motor 721; Driven gear 723 meshes with driving gear 722 and is used to drive lead screw 710 to rotate under the drive of driving gear 722.

[0029] The aforementioned clamping motor 721 serves as the power source for the clamping mechanism, capable of switching between clamping and releasing actions via forward and reverse rotation. Specifically, the clamping motor 721 is fixed to a mounting base inside the base frame 100. A drive gear 722 is mounted on the output shaft, and a driven gear 723 is coaxially fixed at the middle position of the lead screw 710. The drive gear 722 and the driven gear 723 mesh with each other to transmit torque. The power output from the clamping motor 721, after being reduced in speed and increased in torque through gear meshing, drives the lead screw 710 to rotate smoothly.

[0030] In this embodiment, the gear transmission method has a stable transmission ratio and a large torque, which can accurately control the rotation angle of the lead screw 710, thereby achieving fine adjustment of the clamping force; the gear transmission structure is compact, adaptable to the arrangement requirements of the narrow space inside the base frame 100, and has reliable operation and low maintenance cost.

[0031] In some embodiments, the first speed measuring unit 400 includes: A fixed bracket is installed on the base frame 100; The speed measuring wheel is mounted on a fixed bracket and is used to abut against the surface of the cable; A rotary encoder, electrically connected to the control unit 600, is used to detect the rotational speed of the speed measuring wheel.

[0032] The aforementioned fixed bracket serves as the supporting and fixing structure for the speed measuring component, the speed measuring wheel is a contact-type speed acquisition component, and the rotary encoder is a speed signal conversion device. Specifically, the fixed bracket is fixed to the side of the cable outlet or inlet end of the base frame 100, the speed measuring wheel is rotatably mounted on the end of the bracket, and the wheel surface is in contact with the upper surface of the cable. When the cable advances, it drives the speed measuring wheel to rotate synchronously; the rotary encoder is coaxially mounted on the shaft of the speed measuring wheel, and outputs pulse signals as the speed measuring wheel rotates. The control unit 600 calculates the real-time transmission speed of the cable based on the pulse frequency.

[0033] In this embodiment, a contact speed measuring wheel is used to directly collect the actual speed of the cable. The detection results are not affected by track slippage, and the data is true and reliable. A single device can independently complete speed acquisition and slippage determination without relying on the collaboration of multiple devices, making it applicable to a wider range of scenarios.

[0034] In some embodiments, the second speed measuring unit 500 further includes: The elastic support unit is located between the fixed bracket and the speed measuring wheel.

[0035] The aforementioned elastic support unit provides a constant radial clamping force to the speed measuring wheel, ensuring it remains tightly pressed against the cable surface. Specifically, the elastic support unit can employ a compression spring structure or a miniature cylinder structure, with one end abutting against the mounting bracket and the other end against the speed measuring wheel's mounting base, continuously pushing the speed measuring wheel towards the cable. When the cable experiences slight vibration or a minor deviation in its outer diameter, the elastic support unit can adaptively extend and retract, maintaining stable contact between the speed measuring wheel and the cable.

[0036] In this embodiment, the elastic support structure can compensate for cable bounce and outer diameter deviation, prevent the speed measuring wheel from detaching from the cable surface and causing speed measurement inaccuracy, improve the stability and accuracy of speed detection, and provide a reliable data basis for slippage determination.

[0037] In some implementations, reference Figure 3 The aforementioned cable conveying mechanism also includes: The human-computer interaction unit 800 is electrically connected to the control unit 600.

[0038] The aforementioned human-machine interface unit 800 is used to enable information interaction between the operator and the equipment, and to complete parameter settings and status checks. Specifically, the human-machine interface unit 800 adopts a combination of a touch screen and operation buttons or directly uses a touch screen, and is installed on the outside of the base frame 100 in a convenient operating position. The operator can use the human-machine interface unit 800 to preset clamping force parameters, slippage judgment thresholds, speed adjustment parameters, etc., for different specifications of cables, and can also view the current clamping force, conveying speed, operating status, fault information, and alarm information in real time.

[0039] In this embodiment, the human-machine interaction unit 800 realizes the digital preset and management of clamping process parameters. Different specifications of cables can directly call the corresponding parameters without manual adjustment based on experience, which improves the standardization of clamping force control. The real-time status display makes it easy for operators to grasp the equipment operation status, and the intuitive display of fault information improves the efficiency of operation and maintenance.

[0040] like Figure 4 As shown, this application embodiment also provides a cable conveying method, which is applied to the control unit 600 in the cable conveying mechanism as described above. The cable conveying method includes steps S100 to S700. Step S100: Obtain the real-time transmission speed of the cable detected by the first speed measuring unit 400; Step S200: Obtain the track speed of the conveyor track assembly 200 detected by the second speed measuring unit 500. Step S300: Obtain the radial clamping force of the two sets of conveyor track assemblies 200 on the cable detected by the clamping force detection unit 300; Step S400: Determine the cable transmission slippage status based on the real-time conveying speed and track operating speed; Step S500: When the cable transmission slippage status indicates that the transmission cable is slipping, the pulling speed of the front-end equipment on the cable is obtained. Step S600: Determine the difference between the traction speed and the track operating speed; Step S700: Based on the traction speed difference, adjust the radial clamping force of the two sets of conveyor track assemblies 200 on the cable, or adjust the track running speed of the two sets of conveyor track assemblies 200, so that the transmission speed difference between the real-time conveying speed and the track running speed is within the preset anti-slip speed range.

[0041] The cable conveying method in this embodiment is based on the aforementioned cable conveying mechanism, which has been described in detail above and will not be repeated here. Furthermore, this method uses dual-speed comparison to determine slippage, combines the front-end traction speed to differentiate the causes and take differentiated measures. Compared to simply adjusting the clamping force, this effectively prevents blindly increasing the clamping force from damaging the cable insulation layer, while improving the targeting and effectiveness of slippage handling, ensuring the stability and safety of cable conveying.

[0042] The aforementioned control unit 600 is electrically connected to the rotary encoder of the first speed measuring unit 400, and acquires the pulse signals output by the encoder in real time. The real-time cable conveying speed is calculated based on the number of pulses and the circumference of the speed measuring wheel. This speed directly reflects the actual travel state of the cable, is unaffected by factors such as track slippage, and serves as the true benchmark data for determining the conveying status.

[0043] The aforementioned control unit 600 collects the speed signal from the drive end of the conveyor mechanism and calculates the theoretical operating speed of the track. This speed reflects the drive output state of the equipment, and by comparing it with the actual speed of the cable, it can be determined whether there is relative slippage between the two.

[0044] The aforementioned control unit 600 collects the pressure sensor signal from the clamping force detection unit 300 in real time to obtain the current radial clamping force value of the track on the cable, which is used for both closed-loop control of the clamping force and to assist in judging the cause of slippage.

[0045] It should be noted that there is a preset clamping force range. If the clamping force is too large and exceeds this range, an over-clamping force alarm can be generated to remind maintenance personnel to go to the site in time to troubleshoot the fault and avoid the clamping force from being too high and causing damage to the cable.

[0046] The aforementioned control unit 600 compares the real-time cable conveying speed with the track running speed, calculates the speed difference between the two, and determines whether the cable is slipping based on the magnitude of the difference, providing a basis for subsequent handling.

[0047] After determining that the cable is slipping, the control unit 600 further obtains the running speed of the front-end traction equipment and calculates the difference between the front-end traction speed and the running speed of the machine track to distinguish whether the slippage is caused by the mismatch of the speeds of the front and rear equipment or by insufficient clamping force of the machine.

[0048] The aforementioned control unit 600 selects the corresponding handling strategy based on the magnitude of the traction speed difference. It adjusts the track speed to match the front-end traction rhythm or increases the conveying friction by adjusting the clamping force, ultimately causing the difference between the actual cable speed and the track speed to fall back to the allowable range, thus eliminating slippage.

[0049] In some embodiments, the radial clamping force of the two sets of conveyor track assemblies 200 on the cable is adjusted according to the difference in traction speed, or the track running speed of the two sets of conveyor track assemblies 200 is adjusted, including: When the difference in traction speed is greater than the preset allowable difference in traction speed, the track speed of the two sets of conveyor track assemblies 200 is adjusted so that the difference in traction speed is lower than the preset allowable difference in traction speed. When the traction speed difference is less than or equal to the preset allowable traction speed difference threshold, adjust the radial clamping force of the two sets of conveyor track assemblies 200 on the cable so that the transmission speed difference is lower than the preset allowable transmission speed difference threshold.

[0050] In this embodiment, the control unit 600 has a preset permissible traction speed difference threshold, which serves as a criterion for distinguishing the cause of slippage. When the traction speed difference exceeds the threshold, it indicates that the slippage is mainly caused by speed mismatch between the front and rear equipment or cable being pulled. In this case, the machine's track speed is adjusted first to make the machine's speed consistent with the front traction speed, thus eliminating the pulling-type slippage caused by the speed difference at its root. When the traction speed difference is within the permissible range, it indicates that the slippage originates from relative sliding caused by insufficient clamping force of the machine. In this case, the radial clamping force is adjusted to increase the friction between the track and the cable, eliminating the slippage phenomenon.

[0051] In this embodiment, corresponding handling strategies are adopted for slippage caused by different reasons. Slippage caused by speed mismatch is resolved by adjusting the speed to avoid blindly increasing the clamping force and damaging the cable; slippage caused by insufficient clamping is resolved by adjusting the force. This is more targeted and greatly improves the accuracy and rationality of slippage handling.

[0052] In some embodiments, adjusting the radial clamping force of the two sets of conveyor track assemblies 200 on the cables so that the transmission speed difference is lower than a preset permissible transmission speed difference threshold includes: Control the two sets of conveyor track assemblies 200 to move closer to each other at a preset clamping step value, and determine the cumulative stepping time or cumulative stepping number of the two sets of conveyor track assemblies 200 performing the stepping operation; If the cumulative stepping time exceeds the preset clamping adjustment time and the transmission speed difference is greater than the preset allowable transmission speed difference threshold, or if the cumulative stepping number exceeds the preset clamping adjustment number and the transmission speed difference is greater than the preset allowable transmission speed difference threshold, an insufficient friction alarm message will be generated. When the transmission speed difference is less than or equal to the preset allowable transmission speed difference threshold, the two sets of conveyor track assemblies 200 are controlled to stop approaching each other.

[0053] In this embodiment, the clamping force is adjusted using a step-by-step fine-tuning method. The clamping force is increased slightly in fixed increments to prevent excessive clamping and cable damage. The duration or number of steps is recorded during the adjustment process. If slippage persists after multiple or prolonged fine-tuning steps (e.g., two steps, or the duration corresponding to two steps; the specific value needs to be flexibly adjusted according to actual needs), it is determined that there is a persistent lack of friction, possibly caused by track wear, lubricating substances adhering to the cable surface, etc. In this case, an alarm message is generated to prompt the operator to check the equipment and cable condition. Once slippage is eliminated and the speed difference returns to the allowable range, clamping adjustment is immediately stopped to prevent the clamping force from continuously accumulating and increasing.

[0054] In this embodiment, the step-by-step fine-tuning clamping force has high adjustment accuracy, which can prevent excessive clamping from damaging the cable; the setting of dual thresholds for cumulative duration and number of times to determine continuous faults can promptly identify abnormal operating conditions and issue alarms, preventing cable damage caused by equipment operating with defects and improving the safety of equipment operation.

[0055] In some implementations, the cable transmission slippage state is determined based on the real-time conveying speed and the track operating speed, including: Determine the transmission speed difference between the real-time conveying speed and the track operating speed; When the transmission speed difference is greater than the preset allowable transmission speed difference threshold, the cable transmission slippage status indicates that the transmission cable is slipping. When the transmission speed difference is less than or equal to the preset allowable transmission speed difference threshold, the cable transmission slippage status indicates that there is no slippage in the transmission cable.

[0056] In this embodiment, the control unit 600 has a preset allowable speed difference threshold, which serves as the boundary between normal conveying and slippage states. After calculating the difference between the actual cable speed and the track drive speed, it is compared with the threshold. If the difference exceeds the threshold, it is determined to be a slippage state; otherwise, it is determined to be a normal conveying state. A delay judgment logic can also be added during actual judgment. Slippage is only confirmed when the transmission speed difference remains greater than the threshold for a set time. This effectively filters out false judgments caused by instantaneous interference and improves the reliability of slippage judgment.

[0057] In this embodiment, the judgment logic of speed difference threshold comparison is simple, clear and fast. Combined with delayed judgment, it can further eliminate instantaneous interference. The judgment result is accurate and reliable, providing a stable triggering basis for subsequent slippage handling.

[0058] In some embodiments, the above-described cable transmission method further includes: An alarm message is generated when the cable slippage status indicates that the transmission cable is slipping.

[0059] In this embodiment, once cable slippage is detected, the control unit 600 immediately generates an alarm message to prompt the operator to pay attention to the equipment's operating status. The alarm message can be simultaneously output via an audible and visual alarm, with flashing lights and audible prompts combining to facilitate quick fault detection by the operator. Simultaneously, the alarm message is displayed on the human-machine interface unit 800, showing detailed information such as the slippage status and slip ratio, assisting the operator in troubleshooting.

[0060] In this embodiment, the slippage condition triggers an immediate alarm, which allows operators to be aware of equipment abnormalities in a timely manner, intervene quickly, and prevent the slippage from causing continuous wear on the cable surface, thus ensuring the quality of cable laying.

[0061] To better illustrate the implementation process of the solutions in the embodiments of this application, a detailed example is given below.

[0062] Before construction, the cable conveyor is moved to the working position in the cable well. After power is connected, the operator selects the corresponding cable specification through the human-machine interface unit 800, presets the upper and lower limits of clamping force (which can be understood as the preset clamping force range), the allowable speed difference threshold for transmission, the allowable speed difference threshold for traction, and the slippage delay judgment time, etc., and stores the parameters in the control unit 600. The cable is placed in the conveying channel between the two sets of conveyor track assemblies 200, and the clamping program is started. The clamping motor 721 drives the lead screw 710 to rotate through the drive gear 722 and the driven gear 723. The nuts of the two lead screws 710 move synchronously in opposite directions, driving the two sets of conveyor track assemblies 200 closer to the cable until the clamping force reaches the preset value and then stops clamping. The entire clamping drive mechanism is built into the base frame 100. The overall size of the equipment is basically the same as that of traditional clamping machines, requiring no additional space and allowing for easy installation even in narrow cable wells.

[0063] After the conveying process is started, the conveyor motor drives the track through the gearbox and drive shaft, relying on friction to move the cable forward. During the conveying process, the clamping force detection unit 300 monitors the radial clamping force in real time. The speed measuring wheel of the first speed measuring unit 400 is pressed against the cable surface by the elastic support unit, and the rotary encoder collects the actual conveying speed of the cable in real time. The second speed measuring unit 500 collects the track running speed, and all data are synchronously transmitted to the control unit 600. The control unit 600 also monitors the clamping force value. Once the clamping force exceeds the preset upper and lower limits, an audible and visual alarm is immediately triggered. If the clamping force exceeds the preset upper and lower limits, the control unit can also control the conveyor motor to stop if the clamping force exceeds the limit for an extended period, thus achieving immediate protection against clamping force over-limit and preventing cable damage due to abnormal clamping force.

[0064] When cable slippage occurs due to changes in operating conditions, the control unit 600 first compares the real-time conveying speed with the track speed. If the speed difference continuously exceeds a preset threshold and a delay setting, cable slippage is confirmed, and an audible and visual alarm is generated simultaneously. Subsequently, the control unit 600 obtains the traction speed of the front-end traction device and calculates the traction speed difference: if the traction speed difference exceeds the allowable threshold, it is determined to be a pulling slippage caused by speed mismatch between the front and rear devices. The control unit 600 adjusts the conveyor motor speed to make the machine's track speed consistent with the front-end traction speed, and the slippage is naturally relieved after the speed difference is eliminated; if the traction speed difference is within the allowable range, it is determined to be slippage caused by insufficient clamping force. The control unit 600 controls the clamping motor 721 to increase the clamping force slightly by a preset step value. After each adjustment, the speed difference change is detected. If the slippage is eliminated, the adjustment is stopped, and the current clamping force is maintained.

[0065] If slippage persists after two step adjustments and the cumulative duration exceeds the set value, the control unit 600 determines that there is a continuous lack of friction and generates a friction deficiency alarm message, prompting the staff to check the wear of the track and the surface condition of the cable to avoid increasing the clamping force without limit and damaging the cable insulation layer.

[0066] After the conveying operation is completed, the control unit 600 controls the clamping motor 721 to reverse, causing the two sets of conveyor track assemblies 200 to move away from each other, and then the equipment is shut down after the cable is released.

[0067] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A cable conveying mechanism, characterized in that, include: Base frame; Two sets of oppositely arranged conveyor track assemblies are slidably mounted on the base frame, and the two sets of conveyor track assemblies can slide relative to each other; A conveying mechanism for driving the track movement of the two sets of conveying track assemblies; A clamping mechanism is used to drive the two sets of the conveyor track assemblies closer to or further apart from each other; A clamping force detection unit is used to detect the radial clamping force of the tracks of the two sets of conveyor track assemblies on the cable; The first speed measuring unit is used to detect the real-time transmission speed of the cable; The second speed measuring unit is used to detect the track speed of the conveyor track assembly. The control unit is electrically connected to the conveying mechanism, the clamping mechanism, the clamping force detection unit, the first speed measuring unit, and the second speed measuring unit, respectively. It is used to acquire the real-time conveying speed, the track running speed, the radial clamping force, and the traction speed of the cable by the front-end equipment. Based on the radial clamping force, it adjusts the radial clamping force of the two sets of conveying track assemblies on the cable. Based on the real-time conveying speed, the track running speed, and the traction speed, it adjusts the radial clamping force of the two sets of conveying track assemblies on the cable, or adjusts the track running speed of the tracks of the two sets of conveying track assemblies.

2. The cable conveying mechanism according to claim 1, characterized in that, The clamping mechanism includes: The lead screw is rotatably mounted above the base frame via a rotating support structure and is arranged parallel to the base frame. Two lead screw nuts are respectively connected to two sets of the conveyor track assemblies. The two lead screw nuts are used to drive the two sets of the conveyor track assemblies to move closer or further away under the drive of the lead screw. A clamping drive unit is mounted on the base frame and is used to drive the lead screw to rotate.

3. The cable conveying mechanism according to claim 2, characterized in that, The clamping drive unit includes: The clamping motor is mounted on the base frame; The driving gear is mounted on the output shaft of the clamping motor; The driven gear meshes with the driving gear and is used to drive the lead screw to rotate under the drive of the driving gear.

4. The cable conveying mechanism according to claim 1, characterized in that, The first speed measuring unit includes: A fixed bracket is mounted on the base frame; The speed measuring wheel is mounted on the fixed bracket and is used to abut against the surface of the cable; A rotary encoder, electrically connected to the control unit, is used to detect the rotational speed of the speed measuring wheel.

5. The cable conveying mechanism according to claim 4, characterized in that, The second speed measuring unit further includes: An elastic support unit is disposed between the fixed bracket and the speed measuring wheel.

6. The cable conveying mechanism according to claim 1, characterized in that, Also includes: The human-computer interaction unit is electrically connected to the control unit.

7. A cable transmission method, characterized in that, The control unit applied to any cable conveyor in any of the cable conveying mechanisms as described in any of claims 1 to 6, the cable conveying method comprising: Obtain the real-time transmission speed of the cable detected by the first speed measuring unit; The track speed of the conveyor track assembly is obtained by the second speed measuring unit. The radial clamping force of the two sets of conveyor track assemblies on the cable is obtained by the clamping force detection unit. The cable transmission slippage state is determined based on the real-time conveying speed and the track operating speed. When the cable transmission slippage state indicates that the transmission cable is slipping, the traction speed of the cable by the front-end equipment is obtained; Determine the difference between the traction speed and the track operating speed; Based on the traction speed difference, adjust the radial clamping force of the two sets of conveyor track assemblies on the cable, or adjust the track running speed of the two sets of conveyor track assemblies, so that the transmission speed difference between the real-time conveying speed and the track running speed is within a preset anti-slip speed range.

8. The cable conveying method according to claim 7, characterized in that, The step of adjusting the radial clamping force of the two sets of conveyor track assemblies on the cable based on the traction speed difference, or adjusting the track running speed of the two sets of conveyor track assemblies, includes: If the traction speed difference is greater than the preset allowable traction speed difference threshold, the track operating speed of the two sets of conveyor track assemblies is adjusted so that the traction speed difference is lower than the preset allowable traction speed difference threshold. When the traction speed difference is less than or equal to the preset allowable traction speed difference threshold, the radial clamping force of the two sets of conveyor track assemblies on the cable is adjusted so that the transmission speed difference is lower than the preset allowable transmission speed difference threshold.

9. The cable conveying method according to claim 8, characterized in that, Adjusting the radial clamping force of the two sets of conveyor belt assemblies on the cable so that the transmission speed difference is lower than a preset allowable transmission speed difference threshold includes: Control the two sets of conveyor track assemblies to move closer to each other at a preset clamping step value, and determine the cumulative stepping time or cumulative stepping number of the two sets of conveyor track assemblies performing the stepping operation; When the cumulative stepping time exceeds the preset clamping adjustment time and the transmission speed difference is greater than the preset allowable transmission speed difference threshold, or when the cumulative stepping number exceeds the preset clamping adjustment number and the transmission speed difference is greater than the preset allowable transmission speed difference threshold, an insufficient friction alarm message is generated. When the transmission speed difference is less than or equal to the preset allowable transmission speed difference threshold, the two sets of conveyor track assemblies are controlled to stop approaching each other.

10. The cable conveying method according to claim 7, characterized in that, The step of determining the cable transmission slippage state based on the real-time conveying speed and the track operating speed includes: Determine the transmission speed difference between the real-time conveying speed and the track operating speed; When the transmission speed difference is greater than a preset allowable transmission speed difference threshold, the cable transmission slippage state indicates that the transmission cable is slipping. When the transmission speed difference is less than or equal to the preset allowable transmission speed difference threshold, the cable transmission slippage status indicates that the transmission cable is not slipping.

Images