High-voltage cable winding and unwinding device applicable to multiple scenes and control method

Abstract

The invention discloses a high-voltage cable winding and unwinding device suitable for multiple scenes and a control method, and belongs to the technical field of heavy mobile operation equipment auxiliary equipment. The high-voltage cable winding and unwinding device comprises a rack assembly, a winding drum assembly, a flexible power system, a transmission system, a cable arrangement device assembly and an electric slip ring assembly; the cable winding and unwinding device adopts a combined winding drum scheme of rectangular pipe supporting, air deflector heat dissipation and conical drum sealing, the overall mass of the device is reduced while the bearing and sealing performance of the winding drum is guaranteed, and the ventilation and heat dissipation performance of the winding drum is improved; according to the flexible power system, through mutual cooperation of a hysteresis coupler and a magnetic powder clutch, linkage cooperation of the chassis running speed and the cable winding and unwinding speed under the complex road surface working condition can be achieved; the cable arrangement device assembly has the guiding and anti-dragging early warning functions, the cable arrangement stability is improved, meanwhile, the safety early warning and emergency processing capacity in the cable winding and unwinding process is improved, and the reliability of equipment is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary equipment for heavy mobile operation equipment, and particularly to a high-voltage cable winding and unwinding device applicable to multiple scenarios and a control method therefor. Background Art

[0002] With the continuous expansion of customized operation scenarios, heavy mobile operation equipment has been widely favored in fields such as ten-million-ton open-pit mines and deep-sea resource exploitation due to its high efficiency, mobility, low cost, and good benefits. Based on the requirements of high-power and continuous excavation and mining operations, its operation often uses high-voltage electricity transmitted by cables as the real-time power source, and the reliability of cable power supply directly affects the working efficiency of heavy mobile operation equipment.

[0003] At present, most of the cable winding and unwinding devices used in heavy mobile operation equipment (such as electric shovels) are general-purpose, with simple structures, short cable capacity, low automation levels, and require manual assistance. Especially in complex operation scenarios where space is limited, it is difficult for manual workers to follow and wind and unwind the cables, resulting in problems such as low working efficiency, high labor intensity, many safety hazards, and large economic losses. Moreover, under operating conditions, the cables move in high-frequency winding and unwinding motions with heavy mobile operation equipment, often causing phenomena such as cable bending, breaking, and insulation damage, resulting in serious economic losses. At the same time, high-voltage live cables are often arranged on the reel in a multi-layer convolution manner, and the heat generated by their continuous operation accumulates, resulting in serious reel temperature rise phenomena, causing problems such as accelerated aging of the cable insulation layer and deterioration of the working environment of energy-signal conversion equipment, seriously affecting the service life of the cables and equipment. The research and development of a cable winding and unwinding collaborative linkage system for heavy mobile operation equipment has become an urgent problem to be solved for intelligent excavation and mining in customized operation scenarios.

[0004] To solve the above problems, it is necessary to design and develop a high-voltage cable winding and unwinding device with collaborative winding and unwinding functions, good heat dissipation, safe cable laying, stable transmission, and applicable to multiple scenarios, which can be equipped with a driving system to realize the automation of cable winding and unwinding, greatly improving the operation environment of the cables and the winding and unwinding device, enhancing the power supply stability of the winding and unwinding device while extending the service life of the cables. Summary of the Invention

[0005] The object of the present invention is to propose a high-voltage cable winding and unwinding device suitable for heavy-duty mobile operation equipment, and through the method of experimental demonstration, verify its working adaptability under harsh working conditions in multiple fields and multiple scenarios. At the same time, the cable winding and unwinding device adopts a combined drum scheme of rectangular tube support, air guide plate heat dissipation, and conical cylinder sealing, which reduces the overall mass of the device while ensuring the load-bearing and sealing performance of the drum, and improves the ventilation and heat dissipation performance of the drum; the flexible power system can realize the linkage and coordination of the chassis driving speed and the cable winding and unwinding speed under complex road conditions through the mutual cooperation of the hysteresis coupling and the magnetic powder clutch; the cable arranging device assembly has functions of guiding and anti-dragging warning, which improves the stability of cable arrangement while increasing the safety warning and emergency handling capabilities during the cable winding and unwinding process, and greatly improves the reliability of the equipment.

[0006] To achieve the above object, the present invention provides a high-voltage cable winding and unwinding device applicable to multiple scenarios, including a frame assembly, a drum assembly, a flexible power system, a transmission system, a cable arranging device assembly, and a slip ring assembly. The transmission system is a broken shaft. The frame assembly is connected to the deep groove ball bearing of the transmission system. One end of the traditional system is flange-connected to the drum assembly. The drum assembly is arranged inside the frame assembly. The other end of the transmission system away from the drum assembly is key-connected to the flexible power system. The transmission system is fixedly connected to the slip ring assembly with screws. The cable arranging device assembly is screw-connected to the frame assembly.

[0007] Preferably, the frame assembly includes a support frame, a support seat cover, a support seat bottom, a screw rod seat, a guide rod, and a drum protection cover. The support frame is built and welded by rectangular tubes and is in a symmetric distributed structure. Support seats are provided on both the left and right sides of the support frame. One end of the support seat bottom is welded to the support frame, and the other end of the support seat bottom is bolt-connected to the support seat cover. The left and right support seats are axially concentric. The drum protection cover is bolt-connected to the support frame;

[0008] The drum assembly includes side plates, an inner drum, an inner positioning ring, air guide plates, support rings, cable support tubes, outer positioning rings, and outer rib plates. The inner drum is composed of two conical cylinders welded together. The air guide plates are arranged on the inner drum. The cable support tubes are arranged at the outer ends of the inner drum. Side plates are arranged at both the left and right ends of the inner drum. Outer positioning rings for arranging and positioning the outer rib plates are welded and connected to the outside of the left and right side plates. Inner positioning rings for assisting in positioning and welding the inner drum and support rings for supporting the cable support tubes are welded to the inside of the left and right side plates;

[0009] The transmission system includes a transmission shaft, a support shaft sprocket chain, and a drag chain device. The transmission shaft is a stepped shaft. One end of the transmission shaft is key-connected to the flexible power system, and a fastening screw is provided therebetween. The other end of the transmission shaft is key-connected to a flange, and the flange is bolted and fixed to the side plate. The transmission shaft is connected to a deep groove ball bearing of the support seat. The support shaft is a hollow stepped shaft. One end of the boss of the support shaft is bolted and fixed to the support seat, and the other end of the support shaft is screwed and fixed to the electric slip ring assembly. The drag chain device is bolted and fixed to the support frame;

[0010] The flexible power system includes a variable frequency explosion-proof motor, a reducer, a control box, a magnetic powder clutch, and a hysteresis coupler. The variable frequency explosion-proof motor, the reducer, and the magnetic powder clutch are arranged at the end of the transmission shaft. One end of the magnetic powder clutch is connected to the output shaft of the reducer, and the other end of the magnetic powder clutch is connected to the transmission shaft. The hysteresis coupler is fixed on the support seat at the end of the support shaft;

[0011] The cable arranging device assembly includes a crescent-shaped reciprocating lead screw, a lead screw pair, a guide wheel group, and a cable arranging device. Both ends of the crescent-shaped reciprocating lead screw are supported on the lead screw seat by rolling bearings. The lead screw pair is matched with the lead screw, and the lead screw pair is bolted and fixed to the cable arranging device. The cable arranging device is arranged on the guide frame through the guide wheel group;

[0012] The electric slip ring assembly includes a stator end support frame, a slip ring body, and a rotor end support frame. One end of the stator end support frame is fixed on the support shaft, and the other end is bolted and fixed to the stator end connection seat of the slip ring body. The stator end support frame does not rotate with the inner winding cylinder. One end of the rotor end support frame is bolted and fixed to the annular steel plate of the winding cylinder, and the other end is bolted and fixed to the rotor end connection seat of the slip ring body. The rotor end support frame rotates with the inner winding cylinder.

[0013] Preferably, the cable arranging device includes three parts: a support device, a guiding device, and an early warning device. Both the support device and the guiding device are composed of 4 rollers arranged symmetrically;

[0014] The early warning device is composed of an upper travel switch, a lower travel switch, and a touch rocker. The upper travel switch and the lower travel switch are arranged at a certain angle on the side plate of the cable arranging device;

[0015] The touch rocker is composed of a torsion spring, a rocker arm, and a roller. The touch rocker is arranged at the middle position between the upper travel switch and the lower travel switch and moves along the arc groove of the side plate of the cable arranging device.

[0016] The present invention also provides a control method for a high-voltage cable coiling and uncoiling device applicable to multiple scenarios. The working modes of the high-voltage cable coiling and uncoiling device include a linkage mode and a single-action mode, and the linkage mode and the single-action mode are switched through the wireless or wired remote control button;

[0017] Linkage mode, the high-voltage cable coiling and uncoiling device operates in cooperation with the traveling chassis;

[0018] Single-action mode, the high-voltage cable coiling and uncoiling device operates independently.

[0019] Preferably, the linkage mode includes a cable retracting and releasing method of active cable retraction and passive cable release.

[0020] Preferably, during the passive cable release, the cable release state is judged according to the remaining cable length of the drum; a limit value L0 of the remaining cable length of the drum is set, and the actual remaining cable length in the drum is L,

[0021] When L < L0, the controller issues a fault signal, the traveling chassis brakes and the hysteresis coupling is powered off, the warning device issues an audible and visual warning, and the drum brake stops the cable release;

[0022] When L > L0, the high-voltage cable coiling and uncoiling device operates normally.

[0023] Preferably, during the active cable retraction, the cable retraction operation state is judged according to the dragging force of the drum device on the cable; a limit value F0 of the dragging force of the drum device on the cable is set, and the actual dragging force of the drum device on the cable is F,

[0024] When F > F0, the touch rocker rotates upward and disconnects from the lower travel switch, the control box issues a warning signal, the warning device issues an audible and visual alarm. If the obstruction cannot be removed within the obstacle limit time, the touch rocker continues to rotate and contacts the upper travel switch, the warning device continues to act, the traveling motor and the drum motor brakes are engaged, and the hysteresis coupling is powered off to brake the drum and wait for maintenance;

[0025] When F < F0, the lower travel switch of the cable arranging device is triggered, and the high-voltage cable coiling and uncoiling device operates normally.

[0026] Preferably, the single-action control includes transfer and in-situ cable coiling, and the linkage control includes active cable retraction and passive cable release.

[0027] Preferably, in the linkage mode and the single-action mode, when a fault occurs in the high-voltage cable coiling and uncoiling device, the hysteresis coupling can be manually emergently braked, and the warning device is started to issue a warning.

[0028] Therefore, the present invention adopts the above-mentioned high-voltage cable coiling and uncoiling device and control method applicable to multiple scenarios, and has the following beneficial effects:

[0029] 1. The high-voltage cable coiling and uncoiling device has the characteristics of excellent cooperative coiling and uncoiling function, good heat dissipation, safe cable laying, stable transmission, and multi-scenario applicability of control and warning modes. It can ensure the safety of the cable coiling and uncoiling and the working environment of the electric slip ring, the stability of power transmission and cable arrangement of the cable laying device, and the coordination of linkage and single-action modes of control - operation - warning through the mutual cooperation of the drum assembly, flexible power system, transmission system, cable laying device assembly, electric slip ring assembly, etc.

[0030] 2. The drum assembly adopts a combined solution of rectangular tube bearing, air guide plate for heat dissipation, and conical tube sealing. While ensuring the bearing and sealing performance of the drum, it reduces the overall mass of the cable coiling and uncoiling device, enhances the ventilation and heat dissipation performance of the drum, and greatly alleviates the heat accumulation caused by the accumulation of high-voltage cables and the sealing operation of the electric slip ring, providing a good working environment for high-voltage cables and electric slip rings.

[0031] 3. The flexible power system adopts a flexible transmission method. By adjusting the magnitude of the input current of the magnetic particle clutch and setting the magnitude of the maximum output torque (the input current is proportional to the output torque), the overload protection of the drum motor can be achieved; when power is cut off, the torque at the output end of the magnetic particle clutch cannot be reversely transmitted to the motor, improving the safety of motor use. By adjusting the magnitude of the input current of the hysteresis coupling, the magnitude of the braking torque of the hysteresis coupling on the drum can be regulated (the input current is inversely proportional to the braking torque) to achieve the adjustment of the drum rotation torque; when power is cut off, the hysteresis coupling can lock the drum to prevent the drum from rotating and the cable laying from loosening due to inertia. At the same time, through the mutual cooperation of the hysteresis coupling and the magnetic particle clutch, the linkage coordination between the chassis driving speed and the cable coiling and uncoiling speed under complex road conditions can be achieved, improving the safety of the cable coiling and uncoiling device while ensuring stable power transmission.

[0032] 4. The transmission system uses a disconnecting shaft for support and transmission, which is convenient for the threading and arrangement of high-voltage cables, meets the different installation requirements of the stator end and rotor end of the electric slip ring, has good load-bearing performance, is structurally compact, and has good engineering applicability. At the same time, a sprocket and chain transmission scheme is selected between the drum and the cable laying device, which has a simple structure, stable mechanical transmission, strong adaptability to complex and harsh working environments such as dust and humidity, and the small sprocket has a series of tooth number selection schemes, which can quickly replace the small sprocket and adjust the pre-tightening force of the chain to adapt to cables of different sizes and specifications, meeting the working requirements of high-voltage cable coiling and uncoiling of heavy mobile operation equipment.

[0033] 5. The cable laying device integrates the functions of guiding and anti-dragging warning. While achieving orderly cable laying, it increases the safety warning and emergency handling capabilities during the cable coiling and uncoiling process, greatly improving the reliability of the equipment.

[0034] 6. The cable coiling device is provided with two working modes: linkage mode and single-action mode, and can be conveniently switched according to the usage requirements of complex operation scenarios. At the same time, the linkage mode adopts the coiling mode of active cable retraction and passive cable payout, both of which are based on the coordinated movement of the high-voltage cable coiling device and the traveling chassis. Compared with the in-situ coiling and payout mode of hundreds of meters of cable, the required towing torque is significantly reduced, greatly reducing the selected power and purchase cost of the variable-frequency explosion-proof motor.

[0035] 7. The control box can detect the speed signals of the traveling motor and the drum variable-frequency explosion-proof motor, the current signals of the hysteresis coupling and the magnetic powder clutch, the working states of the up and down travel switches of the cable arranging device, etc. By combining speed, position, tension, torque, and early warning, it can adjust the parameter matching relationship of the two motors, the hysteresis coupling, and the magnetic powder clutch in real time, realizing the status detection, coordinated linkage, reliable control, and fault early warning of cable coiling during the operation of heavy mobile operation equipment. At the same time, the control box reserves an interface for big data of intelligent mines, and the relevant operation data of the high-voltage cable coiling device can be uploaded to the database, providing valuable data for the overall regulation and unattended operation of intelligent mines.

[0036] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0037] Figure 1 is a schematic diagram of the high-voltage cable coiling device;

[0038] Figure 2 is a top view sectional view of the high-voltage cable coiling device;

[0039] Figure 3 is the frame assembly;

[0040] Figure 4 is the drum assembly;

[0041] Figure 5 is a schematic diagram of air deflector drainage

[0042] Figure 6 is the flexible power system;

[0043] Figure 7 is the controller control logic;

[0044] Figure 8 is a sectional view of the transmission system;

[0045] Figure 9 is the drag chain device assembly;

[0046] Figure 10 is a schematic diagram of the matching relationship between the lead screw and the cable diameter;

[0047] Figure 11 is the transmission system (including the cable arranging device) assembly;

[0048] Figure 12 is the cable arranging device assembly;

[0049] Figure 13 is the slip ring assembly;

[0050] Figure 14 is the linkage and collaborative transmission route of the high-voltage cable winding system;

[0051] Figure 15 is the schematic diagram of the passive cable laying process;

[0052] Figure 16 is the schematic diagram of the active cable winding process;

[0053] Reference numerals:

[0054] 1. Frame assembly, 2. Drum assembly, 3. Power system, 4. Transmission system, 5. Cable arranging device assembly, 6. Electric slip ring assembly, 7. Support frame, 8. Support seat cover, 9. Support seat bottom, 10. Lead screw seat, 11. Guide rod, 12. Drum protection cover, 13. Side plate, 14. Inner drum, 15. Inner positioning ring, 16. Air guide plate, 17. Support ring, 18. Cable support pipe, 19. Outer positioning ring, 20. Outer rib plate, 21. Arc plate, 22. Bolt, 23. Ring steel plate, 24. Variable frequency explosion-proof motor, 25. Reducer, 26. Control box, 27. Magnetic powder clutch, 28. Hysteresis coupler 29. Transmission shaft, 30. Support shaft, 31. Sprocket and chain, 32. Drag chain device, 33. Transmission shaft end flange, 34. Deep groove ball bearing, 35. Bearing end cover, 36. Transmission shaft end sleeve, 37. Support shaft end flange, 38. Deep groove ball bearing, 39. Drag sprocket, 40. Slide bar, 41. Slide cylinder, 42. Small sprocket, 43. Large sprocket, 44. Crescent lead screw, 45. Lead screw end sleeve, 46. Lead screw pair, 47. Guide wheel set, 48. Cable arranging device, 49. Rolling bearing, 50. Support device, 51. Guide device, 52. Warning device, 53. Upper travel switch, 54. Lower travel switch, 55. Touch rocker, 56. Cable arranging device side plate, 57. Torsion spring, 58. Rocker arm, 59. Roller, 60. Stator end support frame, 61. Slip ring body, 62. Rotor end support frame. Detailed implementation manners

[0055] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0056] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings as understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0057] As shown in the accompanying drawings of the specification, the present invention discloses a high-voltage cable coiling and uncoiling device and a control method applicable to multiple scenarios. The high-voltage cable coiling and uncoiling device includes a frame assembly 1, a drum assembly 2, a flexible power system 3, a transmission system 4, a cable arranging device assembly 5 and a slip ring assembly 6, as Figure 1 , Figure 2 shown.

[0058] The frame assembly is composed of a support frame 7, a support seat cover 8, a support seat bottom 9, a lead screw seat 10, a guide rod 11 and a drum protection cover 12, as Figure 3 shown. The support frame is built and welded by rectangular tubes and has a symmetric distributed structure, which can achieve stable support of the structure. Support seats are provided on both the left and right sides of the support frame. One end of the support seat bottom is welded to the support frame, and the other end is connected to the support seat cover by bolts, realizing the radial constraint of the shaft. At the same time, the left and right support seats are axially concentric to ensure the coaxiality requirement for the installation of the drum device. The drum protection cover is connected to the support frame by bolts, which is convenient for disassembly and assembly and can effectively prevent damage to the high-voltage cable on the drum caused by falling coal, etc.

[0059] The drum assembly is composed of side plates 13, an inner drum 14, an inner positioning ring 15, a wind guide plate 16, a support ring 17, a cable support tube 18, an outer positioning ring 19, outer rib plates 20, etc., as Figure 4As shown in the figure. Outer positioning rings are welded on the outer sides of the left and right side plates, and inner positioning rings and support rings are welded on the inner sides. The outer positioning rings are used to arrange and position 9 outer rib plates, the inner positioning rings are used to assist in positioning and welding the inner drum, and the support rings arrange and support 12 cable support pipes, realizing the construction of the main structure of the drum for bearing weight. The drum side plates are also provided with weight-reducing holes, heat dissipation and ventilation holes, inspection windows and shaft holes. The inspection window is sealed by an arc-shaped plate 21 and fixed by bolts 22, which is convenient for disassembly and assembly, ensuring a good working environment for the slip ring assembly; a 10-mm-thick annular steel plate 23 is welded at the position where the inner side of the drum side plate is connected to the shaft, strengthening the cable-bearing strength of the drum; the inner drum is welded by two conical drums, and 12 air guide plates are arranged in an array on it, and the air guide plates are on the symmetry center plane of the heat dissipation and ventilation holes. When the drum rotates, air flows through the space formed by the cable support pipes and the inner drum, taking away the heat on the surface of the cable and the inner drum, making the drum have the structural characteristics of good heat dissipation and strong maintainability (such as Figure 5 ). In addition, the output cable at the rotor end of the electric slip ring inside the drum is fixed on the inner drum wall through a cable clamp, can rotate together with the drum, and can complete the internal and external transition of the output cable through the cable passing hole of the inner drum body, so that the cable can be evenly arranged on the cable support pipes.

[0060] The flexible power system consists of a variable-frequency explosion-proof motor 24, a reducer 25, a control box 26, a magnetic powder clutch 27, and a hysteresis coupler 28 (such as Figure 6 ), and can regulate the active retraction and passive release functions of the high-voltage cable. The variable-frequency motor, the reducer, and the magnetic powder clutch are arranged at the drive shaft end. One end of the magnetic powder clutch is connected to the output shaft of the reducer, and the other end is connected to the drive shaft. By controlling the magnitude of the input current of the magnetic powder clutch, its maximum output torque can be regulated to achieve overload protection of the motor and limit the bearing weight of the drum. And the variable-frequency explosion-proof motor is equipped with an electromagnetic brake. When the brake is energized, the motor is locked and braked; when the magnetic powder clutch is de-energized, it stops working, the output torque is 0, and neither the forward torque of the reducer to the drive shaft nor the reverse torque of the drive shaft to the reducer can be transmitted. The hysteresis coupler is fixed on the support seat at the support shaft end. By controlling the magnitude of the input current of the hysteresis coupler, the distance between the friction plate of the hysteresis coupler and the drum can be adjusted to achieve the regulation of the braking torque of the hysteresis coupler on the drum, meeting the coordinated requirements of the drum winding and unwinding speed and the traveling speed under complex operating scenarios. When the hysteresis coupler is de-energized, the friction plate is closely attached to the drum and the braking torque is the largest, and the drum brakes and stops rotating. The control box can collect information such as the rotation speeds of the traveling motor and the variable-frequency motor, the number of cable winding and unwinding turns, and the cable winding length, realize the regulation of the start-stop and rotation speed of the drum for active cable winding, and make emergency treatments for dangerous working conditions such as drum overload and over-winding and over-unwinding of the cable. Its control logic is as Figure 7 shown.

[0061] The drive system adopts a broken shaft design scheme, mainly including a drive shaft 29, a support shaft 30, a sprocket chain 31, a drag chain device 32, etc., as Figure 8 shown. The drive shaft is a stepped shaft. One end is connected to the output shaft of the magnetic powder clutch through a key and axially limited by a fastening screw to prevent axial movement of the drive shaft. The other end is connected to a flange 33 through a key, and the flange is fixedly connected to the side plate of the drum through bolts, thereby realizing power transmission. The drive shaft is installed on the support seat through deep groove ball bearings 34 and limited at both ends by bearing end covers 35 and sleeves 36 respectively to achieve the stability of power transmission. The support shaft is a hollow stepped shaft. One end of its boss is fixed to the support seat through bolts, and the other end is fixedly connected to the support frame at the stator end of the slip ring through screws, thereby realizing the fixation of the stator end of the slip ring and the input cable at the stator end. The flange 37 is placed on the support shaft through deep groove ball bearings 38 and fixedly connected to the side plate of the drum through bolts, and can rotate with the rotation of the drum. The drag chain device is fixed to the support frame through bolts. The drag sprocket 39 is fixed to the slide bar 40 through a pin shaft. By adjusting the relative position of the slide cylinder 41 and the slide bar, the chain pre-tightening force can be applied, which is convenient for replacing the corresponding small sprocket 42 according to different cable diameters, as Figure 9 shown. The large sprocket 43 is fixed to the outer boss of the flange through bolts. The small sprocket is connected to the crescent-shaped lead screw 44 through a key and can complete the transmission of power to the cable arranging device assembly with the rotation of the drum. And the small sprocket is limited by a shaft shoulder and a sleeve 45, which is convenient for the quick replacement of the small sprocket. The transmission ratio of the sprocket chain depends on the cable diameter, the number of cable arranging turns and the lead screw parameters. By adjusting the matching relationship between the large and small sprockets, the cable arranging requirements of different models of cables can be realized. The formula is as follows:

[0062]

[0063] Among them, i is the transmission ratio of the sprocket chain mechanism; n1 and n2 are the rotational speeds of the large and small sprockets; Z2 and Z1 are the number of teeth of the large and small sprockets; P h is the lead of the lead screw; D is the cable diameter; L is the adjacent cable clearance value; d is the center distance between adjacent cables (when the cables are closely arranged, d = D; when arranged with a gap, d = D + L, as Figure 10 ). When the number of teeth Z2 of the large sprocket, the lead P h of the lead screw, and the adjacent cable clearance value L are fixed, the number of teeth Z1 of the small sprocket is proportional to the cable diameter D. Different specifications of cable diameters can be input into this formula to calculate the number of teeth of the small sprocket to meet different cable arranging requirements.

[0064] The cable arranging device assembly is composed of a crescent-shaped reciprocating lead screw 44, a lead screw pair 46, a guide wheel set 47 and a cable arranging device 48, as Figure 11As shown. The ends of the lead screw are supported on the lead screw seat via rolling bearings 49. The lead screw pair, which is compatible with the lead screw, reciprocates on the lead screw, converting rotational motion into translational motion. The lead screw pair is bolted to the cable guide, which is mounted on the guide frame via a guide wheel assembly. Rotation of the lead screw allows the cable guide to reciprocate along the guide rod, thereby ensuring uniform distribution of the reeled cables.

[0065] The cable arranger is divided into three parts: a supporting device 50, a guiding device 51, and an early warning device 52. Figure 12 As shown. The supporting device and the guiding device are both composed of four symmetrically arranged rollers, which can greatly reduce the friction coefficient, reduce the wear of the mechanical structure on the cable, and realize the direction guidance of the retraction and arrangement of the high-voltage cable, as well as the limitation and support of the suspended cable. The early warning device is composed of an upper travel switch 53, a lower travel switch 54, and a touch rocker 55. The upper and lower travel switches are arranged at a certain angle on the side plate 56 of the cable arranger. The touch rocker is composed of a torsion spring 57, a rocker arm 58, and a roller 59. It is arranged in the middle position of the upper and lower travel switches and can move along the arc groove of the side plate of the cable arranger. Through the contact between the touch rocker and the upper and lower travel switches, the three working states of the cable arranger, namely, working, warning, and shutdown, can be switched, realizing the anti-drag warning function of the cable and avoiding bending and breaking of the cable due to excessive stretching.

[0066] The electric slip ring assembly consists of a stator end support frame 60, a slip ring body 61 and a rotor end support frame 62, which can connect the drum body and transmit high-voltage cable energy and signals, such as Figure 13 As shown in the figure, the stator-end support frame has one end fixed to the support shaft and the other end bolted to the stator-end connection seat of the slip ring. The stator-end support frame does not rotate with the drum. The rotor-end support frame has one end bolted to the drum's annular steel plate and the other end bolted to the rotor-end connection seat of the slip ring. It rotates with the drum. Both the stator-end support frame and the rotor-end support frame have wiring slots on the drum body to facilitate the connection of high-voltage cables.

[0067] The present invention can be matched with a driving system to realize the linkage and coordination of cable retraction and extension during the operation of heavy mobile operating equipment.

[0068] The high-voltage input cable passes through the center of the support shaft and enters the interior of the reel. It is divided into 4 bundles of cables (2 power lines, a signal line, and a ground line) at the wiring groove and connected to the 4 terminals of the stator end connection seat of the slip ring body. The high voltage is input into the slip ring body, and the slip ring body outputs various power signals to the rotor end of the slip ring body. The 4 terminals of the rotor end connection seat of the slip ring body are connected to the 4 bundles of output cables, and the power and signals are concentrated to the output cables, completing the connection of the high-voltage signal of the reel rotating body, ensuring the normal transmission of high-voltage cable energy and signals during the cable winding and unwinding process.

[0069] The cable coiling device mainly has two operation modes: linkage and single-action. The two operation modes can be switched through the corresponding buttons of wireless or wired remote control. In the linkage mode, the cable coiling device and the driving chassis operate in coordination (the driving motor is powered on and the brake is applied, and the driving chassis brakes and stops). In the single-action mode, the cable coiling device works independently and can realize in-situ cable coiling and paying out. Among them, the linkage mode adopts the cable winding and paying-out method of active cable winding and passive cable paying out, as Figure 14 shown.

[0070] During the passive cable paying-out process, the driving chassis carries the cable coiling device and drives away from the high-voltage power supply end. The variable-frequency explosion-proof motor is locked, and the hysteresis clutch is powered off to block the reverse transmission of the dragging torque T1 of the cable on the drum to the reducer and the motor, so as to protect the reducer and the motor during the passive cable paying-out process, as Figure 15 . Due to the gravity G of the suspended cable and the friction F3 between the grounded cable and the ground, the cable generates a dragging force F on the drum device, forming a dragging torque T1 of the cable on the drum (T1 = F × R, where R is the cable winding radius and changes with the number of cable coiling and paying-out layers). When the remaining cable length L of the drum is greater than the limit value L0, the coiling and paying-out device operates normally. With the movement of the driving chassis, when the dragging torque T1 of the cable on the drum is greater than the braking torque T of the hysteresis coupler on the drum, the drum rotates. The rotation of the drum transmits the power to the support end flange, and the rotation of the flange drives the sprocket and chain drive. Under the action of the rotation torque T0 of the small sprocket on the lead screw, the lead screw pair and the cable arranging device perform reciprocating motion, so as to realize orderly cable paying out; when the remaining cable length L of the drum is less than the limit value L0, to prevent over-paying out of the cable from causing over-tension of the cable, the controller issues a fault signal to make the driving chassis brake, the hysteresis coupler power off, and the warning device issue an audible and visual warning. At this time, the braking torque T of the hysteresis coupler on the drum is the largest, and the drum brakes and stops paying out the cable. At the same time, due to the change of the cable arrangement layer number and the complexity and randomness of the road conditions, the dragging torque T1 of the cable on the drum is in a constantly changing state. When the dragging torque T1 of the cable on the drum changes, the control box adjusts the braking torque T of the hysteresis coupler on the drum by adjusting the magnitude of the current input to the hysteresis coupler, so that the cable paying-out speed v_coil of the drum matches the driving speed v_drive of the chassis, realizing the coordinated linkage of the chassis driving and the drum cable paying out. When the driving chassis brakes, the hysteresis coupler is powered off, causing the drum to brake and stop paying out the cable.

[0071] During the active cable retraction process, the traveling chassis carries the cable winding and unwinding device and moves closer to the high-voltage power supply end. When the control box detects the start signal of the traveling motor, the reel motor starts 1 - 2 s in advance. The magnetic powder clutch is energized to set the upper limit T2 of the output torque of the speed reducer, and a pre-tightening force is applied to the cable to ensure that the cable is in a taut state during the active cable retraction process. When the pulling force F of the reel device on the cable is within the limit value F0, the lower travel switch of the cable arranging device is triggered, and the winding and unwinding device can operate normally. When the rotational torque T3 (T3 ≤ T2) output by the reel motor through the speed reducer and the magnetic powder coupler is greater than the sum of the braking torque T of the hysteresis coupler on the reel and the pulling torque T1 of the cable on the reel, the reel rotates (i.e., T3 > T + T1). The rotation of the reel transmits the power to the support end flange, and the rotation of the flange drives the sprocket and chain drive. The screw rotates and drives the screw pair and the cable arranging device to reciprocate, completing the orderly cable retraction. When the pulling torque T1 of the cable on the reel is greater than the upper limit T4 of the maximum output torque of the speed reducer (T1 > T4), the cable retraction weight reaches the limit value. At this time, the controller issues a fault signal to make the traveling motor and the reel motor brake with a brake, the hysteresis coupler is de-energized to brake the reel, and the warning device issues an audible and visual warning, and the reel stops cable retraction. When the pulling force F of the reel device on the cable exceeds the limit value F0, the cable is taut, causing the touch rocker to rotate upward and disconnect from the lower travel switch. The cable winding and unwinding encounter an obstacle, and the control box issues a warning signal, and the warning device issues an audible and visual alarm. If the obstacle cannot be removed within the specified time limit, the touch rocker will continue to rotate and contact the upper travel switch. At this time, the warning device continues to function, and the traveling motor and the reel motor are braked with a brake, and the hysteresis coupler is de-energized to brake the reel and wait for maintenance. After the maintenance is completed, it can be reset through wireless or wired remote control. At the same time, when the pulling torque T1 of the cable on the reel changes, the control box adjusts the braking torque T of the hysteresis coupler on the reel by adjusting the magnitude of the current input to the hysteresis coupler, and adjusts the rotational speed n of the reel motor and the torque upper limit T2 of the magnetic powder clutch, so that the cable retraction speed v_reel matches the traveling speed v_travel of the chassis. When the traveling speed v_travel of the chassis exceeds the limit value v0, the controller issues a fault signal to make the traveling chassis brake, the hysteresis coupler is de-energized to brake the reel, and the warning device issues an audible and visual warning, and the reel stops cable retraction, as Figure 7 and Figure 15 shown.

[0072] During the in-situ cable retraction process, the driving motor is locked. The cable retraction and pay-out are controlled by remote control signals. The magnetic powder clutch is energized to set the upper limit T4 of the maximum output torque of the reducer. The braking torque T of the hysteresis coupling on the drum is 0. When the dragging force F of the drum device on the cable is within the limit value F0, the lower stroke switch of the cable arranging device is triggered, and the retraction and pay-out device can operate normally. When the rotational torque T3 output by the magnetic powder coupling is greater than the dragging torque T1 of the cable on the drum, the drum rotates. The power is transmitted to the lead screw through the sprocket and chain device. The rotation of the lead screw drives the lead screw pair and the cable arranging device to reciprocate along the guide rod, realizing the orderly cable retraction of the drum. When stopping the cable retraction, the hysteresis coupling is de-energized to brake the drum. When the dragging torque T1 of the cable on the drum is greater than the upper limit T4 of the maximum output torque of the reducer (T1>T4), the retraction weight reaches the limit value. At this time, the controller sends a fault signal to make the warning device give an audible and visual warning, and the hysteresis coupling is de-energized, and the drum brakes to stop the cable retraction. When the dragging force F of the drum device on the cable exceeds the limit value F0, the control box sends a warning signal, and the warning device gives an audible and visual alarm. If the obstacle cannot be removed within the specified time, touching the rocker will continue to rotate and contact the upper stroke switch. At this time, the warning device continues to function, and the hysteresis coupling is de-energized, and the drum brakes to stop the cable retraction.

[0073] During the in-situ cable pay-out process, the driving motor is locked. The cable retraction and pay-out are controlled by remote control signals. The magnetic powder clutch is energized to set the upper limit T4 of the maximum output torque of the reducer. The braking torque T of the hysteresis coupling on the drum is a fixed value. When the sum of the rotational torque T3 output by the magnetic powder coupling and the dragging torque T1 of the cable on the drum is greater than the braking torque T of the hysteresis coupling on the drum (i.e., T3 + T1>T), the drum rotates. The power is transmitted to the lead screw through the sprocket and chain device. The rotation of the lead screw drives the lead screw pair and the cable arranging device to reciprocate along the guide rod, realizing the orderly cable pay-out of the drum. When stopping the cable pay-out, the hysteresis coupling is de-energized to brake the drum. When the remaining cable length L of the drum is less than the limit value L0, to prevent over-pulling of the cable due to excessive pay-out, the controller sends a fault signal to make the warning device give an audible and visual warning. At the same time, the hysteresis coupling is de-energized, and the drum brakes to stop the cable pay-out.

[0074] In the linkage mode and single-action mode, when a fault occurs in the high-voltage cable retraction and pay-out device, the hysteresis coupling can perform manual emergency braking and start the warning device to give a warning.

[0075] Therefore, the present invention adopts the above-mentioned high-voltage cable retraction and pay-out device and control method applicable to multiple scenarios, which can be matched with the driving system to realize the automation of cable retraction and pay-out, greatly improving the working environment of the cable and the retraction and pay-out device, enhancing the power supply stability of the retraction and pay-out device while extending the service life of the cable.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions of the present invention or make equivalent replacements, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A high-voltage cable winding and unwinding device applicable to multiple scenarios, characterized in that: It includes a frame assembly, a drum assembly, a flexible power system, a transmission system, a cable arranging device assembly, and a slip ring assembly. The transmission system is a broken shaft. The frame assembly is connected to the transmission system through a deep groove ball bearing. One end of the traditional system is flange-connected to the drum assembly. The drum assembly is arranged inside the frame assembly. The other end of the transmission system away from the drum assembly is key-connected to the flexible power system. The transmission system is fixedly connected to the slip ring assembly with screws. The cable arranging device assembly is connected to the frame assembly with a lead screw.

2. A high-voltage cable reeling and unwinding device applicable to multiple scenarios according to claim 1, characterized in that: The frame assembly includes a support frame, a support seat cover, a support seat bottom, a lead screw seat, a guide rod, and a drum protection cover. The support frame is built and welded by rectangular tubes and is in a symmetric distributed structure. There are support seats on both the left and right sides of the support frame. One end of the support seat bottom is welded to the support frame, and the other end is bolt-connected to the support seat cover. The left and right support seats are axially concentric. The drum protection cover is bolt-connected to the support frame. The drum assembly includes side plates, an inner drum, an inner positioning ring, a wind guide plate, a support ring, a cable support tube, an outer positioning ring, and outer rib plates. The inner drum is composed of two conical drums welded together. The wind guide plate is arranged on the inner drum. The cable support tube is arranged at the outer end of the inner drum. Side plates are arranged at both the left and right ends of the inner drum. The outer positioning rings for arranging and positioning the outer rib plates are welded and connected on the outer sides of the left and right side plates. The inner positioning rings for assisting in positioning and welding the inner drum and the support rings for supporting the cable support tube are welded on the inner sides of the left and right side plates. The transmission system includes a transmission shaft, a support shaft sprocket and chain, and a drag chain device. The transmission shaft is a stepped shaft. One end of the transmission shaft is key-connected to the flexible power system, and a fastening screw is arranged between them. The other end of the transmission shaft is key-connected to a flange plate, and the flange plate is fixedly connected to the side plate with bolts. The transmission shaft is connected to the support seat through a deep groove ball bearing. The support shaft is a hollow stepped shaft. The boss end of the support shaft is bolt-fixed to the support seat, and the other end of the support shaft is fixedly connected to the slip ring assembly with screws. The drag chain device is bolt-fixed on the support frame. The flexible power system includes a variable frequency explosion-proof motor, a reducer, a control box, a magnetic powder clutch, and a hysteresis coupler. The variable frequency explosion-proof motor, the reducer, and the magnetic powder clutch are arranged at the end of the transmission shaft. One end of the magnetic powder clutch is connected to the output shaft of the reducer, and the other end is connected to the transmission shaft. The hysteresis coupler is fixed on the support seat at the end of the support shaft. The cable arranging device assembly includes a crescent reciprocating lead screw, a lead screw pair, a guide wheel group, and a cable arranger. The two ends of the crescent reciprocating lead screw are supported on the lead screw seat through rolling bearings. The lead screw pair is matched with the lead screw. The lead screw pair is bolt-connected to the cable arranger. The cable arranger is arranged on the guide frame through the guide wheel group. The electric slip ring assembly includes a stator end support frame, a slip ring body, and a rotor end support frame. One end of the stator end support frame is fixed on the support shaft, and the other end is fixed on the stator end connection seat of the slip ring body by bolts. The stator end support frame does not rotate with the inner reel. One end of the rotor end support frame is fixed on the annular steel plate of the reel by bolts, and the other end is fixed on the rotor end connection seat of the slip ring body by bolts. The rotor end support frame rotates with the inner reel.

3. The high-voltage cable coiling and uncoiling device applicable to multiple scenarios according to claim 2, wherein: The cable arranging device includes three parts: a support device, a guiding device, and a warning device. Both the support device and the guiding device are composed of 4 rollers arranged symmetrically. The warning device consists of an upper travel switch, a lower travel switch, and a touch rocker. The upper travel switch and the lower travel switch are arranged at a certain angle on the side plate of the cable arranging device. The touch rocker is composed of a torsion spring, a rocker arm, and a roller. The touch rocker is arranged at the middle position between the upper travel switch and the lower travel switch and moves along the arc groove of the side plate of the cable arranging device.

4. A control method for a high-voltage cable coiling and uncoiling device applicable to multiple scenarios according to any one of claims 1 to 3, characterized in that: The working modes of the high-voltage cable winding and unwinding device include a linkage mode and a single-action mode. The linkage mode and the single-action mode are switched through the wireless or wired remote control buttons. In the linkage mode, the high-voltage cable winding and unwinding device operates in coordination with the traveling chassis. In the single-action mode, the high-voltage cable winding and unwinding device operates independently.

5. The control method of a high-voltage cable coiling and uncoiling device applicable to multiple scenarios according to claim 4, characterized in that: The linkage mode includes a cable winding and unwinding method of active cable winding and passive cable unwinding.

6. The control method of a high-voltage cable coiling and uncoiling device applicable to multiple scenarios according to claim 5, characterized in that: During the passive cable unwinding process, the cable unwinding state is judged according to the remaining cable length in the reel. A limit value L0 of the remaining cable length in the reel is set, and the actual remaining cable length in the reel is L. When L < L0, the controller sends out a fault signal, the traveling chassis brakes and the hysteresis coupling is powered off, the warning device gives out an audible and visual warning, and the reel brakes to stop cable unwinding. When L > L0, the high-voltage cable winding and unwinding device operates normally.

7. The control method of a high-voltage cable winding and unwinding device applicable to multiple scenarios according to claim 6, characterized in that: During the active cable winding process, the cable winding operation state is judged according to the dragging force of the reel device on the cable. A limit value F0 of the dragging force of the reel device on the cable is set, and the actual dragging force of the reel device on the cable is F. When F > F0, the touch rocker rotates upward and disconnects from the lower travel switch. The control box sends out a warning signal, and the warning device gives out an audible and visual alarm. If the obstruction cannot be removed within the obstacle limit time, the touch rocker continues to rotate and contacts the upper travel switch, the warning device continues to act, the traveling motor and the reel motor brakes are engaged, and the hysteresis coupling is powered off to brake the reel and wait for maintenance. When F < F0, the lower travel switch of the cable arranging device is triggered, and the high-voltage cable winding and unwinding device operates normally.

8. The control method of a high-voltage cable coiling and uncoiling device applicable to multiple scenarios according to claim 4, characterized in that: The single-action control includes transfer and in-situ cable winding, and the linkage control includes active cable winding and passive cable unwinding.

9. The control method of a high-voltage cable coiling and uncoiling device applicable to multiple scenarios according to claim 8, characterized in that: In the linkage mode and the single-action mode, when a fault occurs in the high-voltage cable winding and unwinding device, the hysteresis coupling can be manually emergently braked, and the warning device is started to give out a warning.

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