A smart grid cable stringing tractor

Abstract

The present application relates to a kind of smart grid cable erection traction device, belong to power grid construction technical field, the device includes traction mechanism and conveying mechanism, the motor I of traction mechanism is driven steel wire rope reel drum by connecting component, connecting component includes the driving disc of transmission connection with motor output end, the driven disc of fixed connection with reel drum, by spring drive and insert the pin shaft in driven disc insertion slot, when overload, pin shaft can be disconnected to realize mechanical type quick overload protection, conveying mechanism includes two oppositely arranged conveying components, each conveying component includes vacuum negative pressure cavity box and surrounding track, and through hole is opened on track, negative pressure is made to cable surface by external vacuum pump, in combination with track, cable is stably adsorbed and transported, the present application solves the problem that existing traction device overload protection response is slow, cable clamping is not stable and is easily damaged, has the advantages of protection response quickly, automatic reset, conveying is stable and not damage cable.

Description

Technical Field

[0001] This invention belongs to the field of power grid construction technology and relates to a smart grid cable erection traction device. Background Technology

[0002] In the construction of smart grids, cable laying is one of the core construction links. It is necessary to use a traction device to smoothly transport the cable from the stored state to the laying point to ensure that the cable is not damaged and the laying position is accurate. With the rapid development of smart grids, the specifications and types of cables are constantly increasing and the laying environment is becoming more and more complex, which puts forward higher requirements for the safety, stability, versatility and ease of operation of the traction device.

[0003] In existing technologies, cable laying traction devices are mainly divided into two categories: one is traditional mechanical traction equipment, which relies on a motor-driven winding roller to wind up the steel wire rope to achieve cable dragging; the other is auxiliary conveying traction equipment, which adds a conveying roller group to the traction mechanism to assist cable movement. However, these existing devices still have many shortcomings in practical applications and are difficult to meet the high standards required for smart grid cable laying. Most existing traction devices do not have a dedicated overload protection structure, or only use electrical overload protection. When the cable encounters an obstacle during traction, the traction force will increase instantly. The electrical protection has a response delay, which can easily lead to the cable being pulled apart or its sheath being torn. Some mechanical overload protection structures use disposable parts such as shear pins. After an overload, the parts need to be replaced manually to restore operation, which seriously affects the continuity of construction and increases maintenance costs and operation time.

[0004] Existing auxiliary conveying structures mostly use simple roller clamping methods, which are difficult to adjust. If the clamping force is too loose, it will cause the cable to slip and deviate, while if it is too tight, it will squeeze and damage the cable. Some devices do not have effective guide and limit structures, and the cable is prone to lateral deviation during long-distance conveying. It requires manual correction in real time, which increases labor costs and can easily cause wear on the cable surface during the correction process. Summary of the Invention

[0005] The purpose of this invention is to address the technical defects of existing smart grid cable erection traction devices: delayed response of electrical control protection under overload leading to cable breakage / damage; uneven clamping force of roller group easily causing cable deviation or surface wear; poor compatibility with cables of different diameters requiring frequent component replacement. This invention provides a smart grid cable erection traction device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a smart grid cable erection traction device, comprising: The traction mechanism includes a motor I, a wire rope winding roller, and a connecting assembly, wherein the connecting assembly is connected between the output end of the motor I and the wire rope winding roller; The conveying mechanism includes a mounting base, two oppositely arranged conveying components, and a motor II. The two conveying components are mounted on the mounting base, and the motor II is used to drive the conveying components to operate. The connecting assembly includes a drive disk, a driven disk, a pin, and a spring. The drive disk is connected to the output end of the motor I, and the driven disk is fixedly connected to the shaft of the wire rope winding roller. The drive disk is provided with a mounting hole, the pin is slidably installed in the mounting hole, the spring is disposed in the mounting hole and drives the pin to extend out and insert into the insertion slot on the driven disk, so that the power of the drive disk is transmitted to the driven disk. When the traction is overloaded, the pin retracts into the mounting hole and disengages from the insertion slot against the elastic force of the spring, thereby disconnecting the power transmission. Each of the conveying components includes a vacuum negative pressure chamber and a surrounding track. The inner side of the track slides against the outer surface of the vacuum negative pressure chamber. The track has multiple through holes. The vacuum negative pressure chamber is used to connect to an external vacuum pump, so that negative pressure is applied to the cable through the through holes.

[0007] As a further improvement to the above technical solution: The traction mechanism also includes a base and a reduction gearbox. The wire rope winding roller is rotatably mounted on the base. The motor I and the reduction gearbox are fixed to the base. The output end of the motor I is connected to the input end of the reduction gearbox. The drive disc is fixedly connected to the output end of the reduction gearbox.

[0008] The connecting assembly further includes a pressure plate and a push rod. The pressure plate is fixed to the side of the driven disc facing the driving disc, and the push rod is slidably installed in the mounting hole, with one end fixedly connected to the pressure plate. The two ends of the spring abut against the pin and the push rod, respectively.

[0009] The conveying assembly further includes a lower connecting seat and an upper connecting seat, and the vacuum negative pressure chamber is fixed to the top of the lower connecting seat; a drive wheel and a driven wheel are rotatably mounted between the lower connecting seat and the upper connecting seat, and the track is sleeved on the drive wheel and the driven wheel.

[0010] The conveying assembly also includes a spline sleeve and a gear. The bottom of the lower connecting seat is provided with a mounting cavity. The spline sleeve is rotatably mounted on one side of the lower connecting seat and partially extends into the mounting cavity. The gear is disposed in the mounting cavity and connects the spline sleeve and the drive wheel. The output end of the motor II is provided with a spline shaft, which is simultaneously slidably inserted into the spline sleeves of the two conveying components.

[0011] Two guide rods are fixedly provided inside the mounting base, one of which is fixedly sleeved on the guide rod, and the other is slidably sleeved on the guide rod; A lead screw is rotatably mounted inside the mounting base, and a ball nut is connected to the bottom of the lower connecting seat which is slidably disposed. The ball nut and the lead screw form a ball screw pair.

[0012] The bearing housing for mounting the driven wheel is slidably disposed within the upper connecting seat and the lower connecting seat; The upper connecting seat has an adjusting screw at the top and the lower connecting seat has an adjusting screw at the bottom. The adjusting screw is connected to the bearing seat through a plug and is locked in place by two locking nuts to adjust the position of the driven wheel, thereby tensioning or loosening the track.

[0013] The inner side of the track is provided with a guide part, and the surface of the vacuum negative pressure chamber is provided with a guide groove that cooperates with the guide part.

[0014] The outer side of the track has an arc-shaped groove for accommodating cables.

[0015] Rubber sealing gaskets are fixed at both ends of the vacuum negative pressure chamber, and the rubber sealing gaskets slide against the inner side of the track.

[0016] The overload protection component of the traction mechanism and the negative pressure adsorption component of the conveying mechanism work together. The overload protection component prevents the cable from being pulled apart by excessive traction force from the source, while the negative pressure adsorption component enables the cable to be clamped and conveyed without damage. The two work together to solve the pain point of either being pulled apart or worn during the cable laying process. This not only ensures construction safety but also protects the insulation performance of the cable, and is fully compatible with the high requirements of smart grid cable laying. The single-motor dual-component synchronous drive structure and the adjustable spacing structure work together to achieve complete synchronous operation of the two conveying components through a single spline shaft. This avoids cable twisting and sheath wear caused by the speed difference of the dual motor drive. At the same time, the conveying spacing can be quickly adjusted. It can adapt to cables of different diameters without replacing special parts, which greatly improves the versatility and construction efficiency of the device and reduces equipment investment costs. The track tension adjustment structure works in conjunction with the vacuum negative pressure sealing structure. By adjusting the position of the driven wheel, it ensures that the track is always in close contact with the negative pressure chamber. The rubber sealing gasket reduces negative pressure leakage, ensuring the long-term stability of the cable's adsorption force, preventing slippage and deviation during transportation, and ensuring the transportation stability of long-distance cable laying.

[0017] The cooperation of these institutions has enabled the achievement of overload protection without delay, damage-free transportation, high versatility, and high construction continuity.

[0018] The beneficial effects of this invention are as follows: 1. The intelligent power grid cable erection traction device disclosed in this invention forms a mechanical overload protection structure through the connection components of the drive disc, driven disc, pin, and spring in the traction mechanism. When the cable encounters an obstacle during traction, causing the tension to exceed a set threshold, the reverse thrust of the driven disc on the pin can overcome the spring force, pushing the pin out of the insertion slot, realizing the rapid disconnection of power between the drive disc and the driven disc, causing the wire rope winding roller to stop rotating immediately, avoiding cable breakage or surface damage due to continuous excessive tension; after the obstacle is removed, the spring force can automatically push the pin to reset, and the operation can be resumed without manual intervention, greatly improving the safety and continuity of operation during cable traction. 2. The smart grid cable erection and traction device disclosed in this invention features a vacuum negative pressure chamber and a track in the conveying component. A vacuum pump creates a stable negative pressure within the chamber, which is then transmitted through the through-holes of the track to the cable contact surface, forming an adsorption force that securely adheres the cable to the arc-shaped groove of the track. Simultaneously, rubber sealing gaskets at both ends of the vacuum negative pressure chamber fill the gap between the chamber and the track, reducing negative pressure leakage and further ensuring adsorption reliability. Combined with the limiting effect of the arc-shaped groove on the cable, this effectively prevents relative sliding and lateral deviation during cable transport, ensuring smooth cable transport along a linear trajectory. 3. The smart grid cable erection traction device disclosed in this invention features an adjustment structure consisting of a guide rod, a lead screw, and a ball nut inside the mounting base. This structure allows the lower connecting seat on the sliding side to move along the guide rod by rotating a handwheel, flexibly adjusting the distance between the two conveying components. Simultaneously, the adjusting screw, insert, and locking nut on the upper and lower connecting seats cooperate to adjust the height of the driven wheel to accommodate tracks with different tension requirements. This dual adjustment structure enables the device to adapt to cables of different diameters, eliminating the need to replace special components for specific cable specifications, significantly improving the device's applicability and reducing equipment investment costs.

[0019] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a three-dimensional structural schematic diagram of a smart grid cable erection traction device according to the present invention; Figure 2 This is a schematic diagram of the cable reel support frame structure of a smart grid cable erection traction device according to the present invention; Figure 3 This is a schematic diagram of the traction mechanism structure of a smart grid cable erection traction device according to the present invention; Figure 4 This is a partial cross-sectional view of the traction mechanism of a smart grid cable erection traction device according to the present invention; Figure 5 for Figure 4 Enlarged structural diagram of section A in the middle; Figure 6 This is a schematic diagram of the conveying mechanism structure of a smart grid cable erection traction device according to the present invention; Figure 7 This is a schematic diagram of the conveying component structure of a smart grid cable erection traction device according to the present invention; Figure 8 This is an exploded view of the conveying component of a smart grid cable erection traction device according to the present invention; Figure 9 This is a schematic diagram of the connection structure between the track and the vacuum negative pressure chamber of a smart grid cable erection traction device according to the present invention; Figure 10 This is a schematic diagram of the rubber sealing gasket structure of a smart grid cable erection traction device according to the present invention.

[0021] Reference numerals: 1. Cable reel support frame; 2. Cable tray; 3. Traction mechanism; 31. Base; 32. Wire rope winding roller; 321. Shaft; 322. Winding drum; 323. Driven disc; 3231. Insertion slot; 324. Drive disc; 3241. Mounting hole; 325. Pressure plate; 326. Spring; 327. Push rod; 328. Pin; 33. Motor I; 34. Gearbox; 35. Control cabinet; 4. Conveying mechanism; 41. Mounting base; 42. Motor II; 43. Guide rod; 44. 45. Lead screw; 45. Conveying assembly; 451. Lower connecting seat; 452. Mounting cavity; 453. Spline sleeve; 454. Drive wheel; 455. Gear; 456. Driven wheel; 457. Track; 4571. Arc groove; 4572. Through hole; 4573. Guide part; 458. Adjusting screw; 459. Insert block; 4510. Locking nut; 4511. Ball nut; 4512. Upper connecting seat; 4513. Vacuum negative pressure chamber; 4514. Rubber sealing gasket; 46. Spline shaft; 5. Guide roller. Detailed Implementation

[0022] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures, and should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0024] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] Example 1

[0026] like Figures 1-8 As shown, a smart grid cable laying traction device is installed in a factory and is mainly used for traction and transportation during cable laying. The device includes a cable reel support frame 1, a cable tray 2, a traction mechanism 3, multiple guide rollers 5, and a transportation mechanism 4. The components work together to provide the core drag force through the traction mechanism 3, the transportation mechanism 4 assists in smooth transportation, and the guide rollers 5 provide guidance and limit, ultimately achieving smooth cable traction and protection, and preventing cable wear or breakage during the traction process.

[0027] The cable reel support frame 1 is welded from structural steel and fixed to a pre-set foundation on the factory floor with expansion bolts. The rigidity of the structural steel ensures the stability of the overall structure and prevents deformation or displacement of the cable reel after it is placed. The cable tray 2 is a trough-shaped structure made of aluminum alloy profiles and is horizontally installed in the factory. The traction mechanism 3 and the cable reel support frame 1 are located at opposite ends of the cable tray 2. After the cable is released from the cable reel, it enters the cable tray 2 directly. The trough-shaped structure acts as a barrier to constrain the cable.

[0028] Multiple guide rollers 5 are evenly distributed on the bottom wall of the cable tray 2. The rotational characteristics of the guide rollers 5 convert the sliding friction between the cable and the cable tray 2 into rolling friction, thereby significantly reducing frictional resistance during cable transport and minimizing wear on the cable surface. Each guide roller 5 is rotatably connected to the bottom wall of the cable tray 2 via a deep groove ball bearing seat. The bearing seat provides stable rotational support for the guide roller 5, ensuring smooth and uninterrupted rotation, thus providing stable guidance and support for the cable and preventing lateral deviation during transport.

[0029] The traction mechanism 3 includes a base 31, a motor I 33, a gearbox 34, a wire rope winding roller 32, and connecting components. The base 31 serves as the mounting foundation for the traction mechanism 3, providing fixed support for other components, ensuring the relative position stability of each component, and ensuring precise power transmission. Support seats are welded to the top of the base 31, and the wire rope winding roller 32 is installed between the support seats. The two ends of the rotating shaft 321 of the wire rope winding roller 32 are rotatably connected to the two support seats through self-aligning roller bearings.

[0030] Motor I 33 is bolted to the top of base 31. Motor I 33 serves as the power source for traction mechanism 3, converting electrical energy into mechanical energy. Gearbox 34 is bolted to the top of base 31 near motor I 33. Its core principle is to reduce the output speed of motor I 33 through the meshing of internal gears, while simultaneously increasing the output torque to meet the low-speed, high-torque requirements of wire rope winding roller 32. The output end of motor I 33 is fixedly connected to the input end of gearbox 34 via a flexible pin coupling. The flexible pin coupling not only enables power transmission between motor I 33 and gearbox 34 but also absorbs vibrations during transmission through its elastic element, reducing the impact of vibrations on various components and ensuring smooth power transmission.

[0031] The connecting assembly, located between the output end of the gearbox 34 and the wire rope winding roller 32, is the core structure for power transmission and disconnection. It includes a drive disc 324, a pin 328, a spring 326, a push rod 327, and a pressure plate 325. The drive disc 324 is fixedly fitted onto the output end of the gearbox 34 via a key. The key ensures circumferential fixation between the drive disc 324 and the output end of the gearbox 34, guaranteeing synchronous rotation and thus transmitting the power output from the gearbox 34 to the drive disc 324. The wire rope winding roller 32 includes a rotating shaft 321, a winding drum 322, and a driven disc 323. The winding drum 322 is fixedly fitted onto the outer wall of the rotating shaft 321. Its function is to wind the wire rope, achieving cable traction through the winding of the wire rope. A spiral groove is formed on the outer wall of the winding drum 322 to limit the movement of the wire rope and prevent tangling during winding. The driven disc 323 is fixedly sleeved on the outer wall of the rotating shaft 321 by a flat key. The specifications of the flat key are the same as those of the drive disc 324, ensuring that the driven disc 323 rotates synchronously with the rotating shaft 321. The end of the driven disc 323 near the take-up drum 322 is fixedly connected to the take-up drum 322, ensuring that the take-up drum 322 can rotate together with the driven disc 323, realizing the transmission of power to the take-up drum 322.

[0032] Multiple mounting holes 3241 are evenly distributed on the side of the drive disk 324 near the driven disk 323. These mounting holes 3241 provide mounting space for the pins 328 and springs 326. A pin 328 is slidably mounted in each mounting hole 3241. A insertion slot 3231 is provided on the side of the driven disk 323 near the drive disk 324, corresponding to the position of each pin 328. The pin 328 is inserted into the insertion slot 3231, achieving circumferential fixation between the drive disk 324 and the driven disk 323, thereby transmitting power. A spring 326 is installed in each mounting hole 3241. The two ends of the spring 326 abut against the sides of the pin 328 and push rod 327 respectively via spring seats. The function of the spring seats is to increase the contact area between the spring 326 and the pin 328 and push rod 327, preventing damage to the ends of the spring 326 due to excessive local pressure. When the spring 326 is in a compressed state, it generates an elastic thrust, which always pushes the pin 328 to remain inserted into the insertion slot 3231, ensuring the stability of power transmission.

[0033] A pressure plate 325 is fixedly installed on the side of the driven plate 323 near the drive plate 324 by bolts. The pressure plate 325 provides fixed support for the push rod 327. A push rod 327 is slidably installed in each mounting hole 3241. The other end of the multiple push rods 327 is fixedly connected to the pressure plate 325, so that the multiple push rods 327 can move synchronously. When the traction force does not exceed the set threshold, the elastic thrust of the spring 326 pushes the pin 328 into the corresponding insertion slot 3231, realizing the power connection between the drive disk 324 and the driven disk 323. The end of the pin 328 near the insertion slot 3231 is hemispherical so that the insertion slot 3231 generates axial thrust when it rotates. When the traction force exceeds the set threshold, the reverse thrust generated by the driven disk 323 on the pin 328 is greater than the elastic thrust of the spring 326. The arc surface of the two contacts pushes the pin 328 into the mounting hole 3241 until the pin 328 exits the insertion slot 3231, disconnecting the power connection between the drive disk 324 and the driven disk 323, realizing overload protection. At the same time, by adjusting the position of the pressure plate 325, the position of the push rod 327 in the mounting hole 3241 can be changed, thereby changing the squeezing force on the spring 326 and adjusting the compression force of the spring 326.

[0034] The traction mechanism 3 also includes a control cabinet 35, which houses a controller (such as a PLC or industrial microcontroller). The controller is electrically connected to motor I 33, motor II 42, and an external vacuum pump via cables. The controller is programmed to first start the vacuum pump and motor II 42, causing the conveyor belt 457 to rotate and generate suction force; then, motor I 33 is started for traction. When the connecting components disengage due to overload, the current or torque sensor signal of motor I 33 is fed back to the controller, which can issue an audible and visual alarm and automatically stop motor II 42.

[0035] The conveying mechanism 4 is detachably mounted on the top of the cable tray 2 using bolts. This detachable design facilitates later disassembly of the conveying mechanism 4. The conveying mechanism 4 includes a mounting base 41, two conveying components 45, and a motor II 42. The mounting base 41 serves as the mounting foundation for the conveying mechanism 4, providing fixed support for the two conveying components 45 and the motor II 42, ensuring accurate relative positioning of each component and smooth power transmission. The motor II 42 is bolted to one side of the mounting base 41, serving as the power source for the conveying components 45. It converts electrical energy into mechanical energy, providing power for the operation of the conveying components 45 and driving the two sets of conveying components 45 to work synchronously.

[0036] Each conveying assembly 45 includes a lower connecting seat 451, an upper connecting seat 4512, a drive wheel 454, a driven wheel 456, a spline sleeve 453, a gear 455, and a track 457. The lower connecting seat 451 and the upper connecting seat 4512 are fixedly connected by bolts, together forming the frame structure of the conveying assembly 45, providing mounting support for components such as the drive wheel 454 and the driven wheel 456. The drive wheel 454 and the driven wheel 456 are rotatably mounted between the lower connecting seat 451 and the upper connecting seat 4512 respectively via deep groove ball bearing seats. The deep groove ball bearing seats provide smooth rotational support for the drive wheel 454 and the driven wheel 456, ensuring that both can rotate flexibly. The outer walls of the drive wheel 454 and the driven wheel 456 are connected to the same track 457. The rotation of the drive wheel 454 drives the track 457 to move, thereby realizing the transmission of the cable. The drive wheel 454 and the driven wheel 456 have toothed grooves on their surfaces to increase the friction between them and the track 457, prevent slippage, and ensure that the power can be stably transmitted to the track 457.

[0037] The bottom of the lower connecting seat 451 has a mounting cavity 452, which provides space for the installation and movement of the gear 455, preventing interference between the gear 455 and other components during operation. A spline sleeve 453 is rotatably mounted through and rotatably on one side of the lower connecting seat 451, connected to it via a bearing. The bearing provides smooth rotational support for the spline sleeve 453 and ensures its coaxiality. One end of the spline sleeve 453 extends into the mounting cavity 452 and is fixedly fitted with the gear 455. One end of the drive wheel 454's shaft also extends into the mounting cavity 452, and is fixedly fitted with another gear 455 that meshes with it. Through the meshing of the two gears 455, the rotational power of the spline sleeve 453 is transmitted to the drive wheel 454, achieving synchronous rotation between the spline sleeve 453 and the drive wheel 454. The transmission principle utilizes the meshing action between the gears to convert the rotation of the driving gear into the rotation of the driven gear, while simultaneously changing the direction or speed of power transmission.

[0038] The output end of motor II 42 is fixedly connected to spline shaft 46 via a coupling. The coupling ensures the fixed connection between the output end of motor II 42 and spline shaft 46, guaranteeing synchronous rotation and transmitting power from motor II 42 to spline shaft 46. Spline shaft 46 is slidably disposed within spline sleeves 453 of the two conveying components 45. Circumferential fixation is achieved through spline gear meshing between spline shaft 46 and spline sleeve 453, ensuring power transmission from spline shaft 46 to spline sleeve 453. Simultaneously, axial relative sliding between spline shaft 46 and spline sleeve 453 is allowed to accommodate the need for adjusting the spacing between the two conveying components 45, enabling synchronous drive of the two spline sleeves 453 by motor II 42. An arc-shaped groove 4571 adapted to the cable diameter is provided on the outer side of track 457. The design principle of arc-shaped groove 4571 is to increase the contact area between track 457 and cable, improving their fit, and simultaneously limiting the cable to prevent slippage or deviation during transport.

[0039] Two guide rods 43 are fixedly installed inside the mounting base 41. The guide rods 43 provide guidance for the movement of the lower connecting base 451, ensuring that the lower connecting base 451 can move smoothly in a fixed direction. One of the lower connecting bases 451 is fixedly sleeved on the two guide rods 43, serving as a fixed end and providing a reference for the other lower connecting base 451; the other lower connecting base 451 is slidably sleeved on the two guide rods 43 through a linear bearing. The linear bearing can reduce the sliding friction between the lower connecting base 451 and the guide rods 43, ensuring that the lower connecting base 451 slides smoothly. A ball nut 4511 is bolted to the bottom of the sliding lower connecting seat 451. A lead screw 44 is rotatably mounted inside the mounting seat 41. A telescopic dust cover is fitted over the lead screw 44, with its two ends fixedly connected to the inner wall of the mounting seat 41 and the lower connecting seat 451 on the sliding side, respectively. The balls inside the ball nut 4511 are slidably disposed in the helical groove on the outer wall of the lead screw 44, forming a ball screw transmission mechanism. This mechanism converts the rotational motion of the lead screw 44 into the linear motion of the ball nut 4511. Rotating the lead screw 44 causes the ball nut 4511 to move along the lead screw 44, which in turn moves the lower connecting seat 451 fixed thereto, adjusting the distance between the two conveying components 45 to accommodate cables of different diameters. One end of the lead screw 44 extends to the outside of the mounting seat 41 and is fixedly mounted with a handwheel. The handwheel increases the rotation radius, reduces the force required to rotate the lead screw 44, and facilitates manual adjustment by the operator.

[0040] Example 2

[0041] Reference Figures 1-10This invention provides a novel technical solution: a smart grid cable erection traction device. Two bearing seats on the driven wheel 456 are slidably mounted within an upper connecting seat 4512 and a lower connecting seat 451, respectively, allowing the driven wheel 456 to adjust its position in the front-to-back direction. Adjusting screws 458 are fixed to the top of the upper connecting seat 4512 and the bottom of the lower connecting seat 451. A plug 459 is fitted onto the outer wall of the adjusting screw 458, and the plug 459 is inserted into a slot on the bearing seat, thus connecting the adjusting screw 458 to the bearing seat. Two locking nuts 4510 are threaded onto the outer wall of the adjusting screw 458, and the plug 459 is located between the two locking nuts 4510. By rotating the two locking nuts 4510, the axial position of the plug 459 on the adjusting screw 458 is adjusted, thereby causing the bearing seat to move back and forth, thus adjusting the position of the driven wheel 456. Adjusting the driven wheel 456 forward or backward can change the tension of the track 457. When the track 457 is loose, adjusting the driven wheel 456 forward can tighten the track 457, ensuring the fit between the track 457 and the drive wheel 454 and the driven wheel 456, and preventing slippage. When the track 457 is too tight, adjusting the driven wheel 456 backward can loosen the track 457 and reduce wear between components.

[0042] The conveying assembly 45 also includes a vacuum negative pressure chamber 4513, which is fixedly installed on the top of the lower connecting seat 451 by bolts. The vacuum negative pressure chamber 4513 is connected to an external vacuum pump through a pipe. With the suction action of the vacuum pump, the air inside the vacuum negative pressure chamber 4513 is extracted, creating a negative pressure environment inside the chamber. The inner side of the track 457 has an integrally formed guide part 4573, and the outer side of the vacuum negative pressure chamber 4513 has an L-shaped groove adapted to the guide part 4573. The guide part 4573 is slidably disposed in the L-shaped groove. Through the cooperation between the guide part 4573 and the L-shaped groove, the movement of the track 457 is guided and limited, ensuring that the track 457 can move smoothly along a fixed trajectory, while preventing the track 457 from deviating or falling off during movement. Multiple through holes 4572 are evenly distributed on one side of the track 457. These through holes 4572 transfer the negative pressure within the vacuum negative pressure chamber 4513 to the contact surface between the track 457 and the cable, thereby generating an adsorption force on the cable and firmly attaching it to the track 457, improving the cable's stability during transport. Rubber sealing gaskets 4514 are fixedly attached to both ends of the vacuum negative pressure chamber 4513. One side of the rubber sealing gasket 4514 is tightly fitted to the inner side of the track 457. Through the elastic deformation of the rubber sealing gasket 4514, the gap between the vacuum negative pressure chamber 4513 and the track 457 is filled. Furthermore, the width of the rubber sealing gasket 4514 covers at least three rows of through holes 4572, preventing a complete through hole 4572 from being partially located within the vacuum negative pressure chamber 4513 while the other part is exposed. This reduces air leakage within the negative pressure chamber, ensures the stability of the negative pressure environment, and guarantees sufficiently stable adsorption.

[0043] The working process of this device is as follows: the cable reel with the cable wound on it is placed on the cable reel support frame 1, one end of the steel wire rope is pulled out and passed through the guide rollers 5 on the cable bridge 2 and the tracks 457 of the two conveying components 45 in sequence, and finally fixedly connected to the cable on the cable reel.

[0044] Simultaneously, motors I33 and II42 are started. The power output of motor I33 is transmitted to the reduction gearbox 34 through the flexible pin coupling. The reduction gearbox 34 reduces the speed and increases the torque through internal gear meshing, and then transmits the power to the drive disc 324. The drive disc 324 drives the driven disc 323 to rotate through the pin 328 inserted into the insertion slot 3231. The driven disc 323 drives the rotating shaft 321 and the winding drum 322 to rotate synchronously. During the rotation of the winding drum 322, the wire rope is wound up and the cable is dragged by the wire rope until the cable moves between the tracks 457 of the two conveying components 45.

[0045] Based on the cable diameter, rotate the handwheel on the lead screw 44 to move the lower connecting seat 451 on the sliding side along the guide rod 43 via the ball screw transmission mechanism, adjusting the distance between the two conveying components 45 so that the arc groove 4571 of the track 457 fits against the cable surface; rotate the locking nut 4510 on the adjusting screw 458 to adjust the position of the driven wheel 456, ensuring that the track 457 maintains a suitable tension, ensuring smooth power transmission without damaging the track 457. Start the external vacuum pump, which creates a negative pressure inside the vacuum negative pressure chamber 4513. This negative pressure is transmitted to the cable surface through the through holes 4572 on the track 457. Due to the width of the rubber sealing gasket 4514, which covers at least three rows of through holes 4572, the negative pressure inside the vacuum negative pressure chamber 4513 will not leak, generating an adsorption force on the cable and firmly adhering it to the track 457, preventing relative slippage of the cable during transport.

[0046] The power output from motor II 42 is transmitted to spline shaft 46 via coupling. Spline shaft 46 drives two spline sleeves 453 to rotate synchronously. Spline sleeves 453 drive drive wheel 454 to rotate through two meshing gears 455 in mounting cavity 452. Drive wheel 454 drives track 457 to move. Track 457 generates forward conveying force while adsorbing cable. It works in conjunction with the dragging force of traction mechanism 3 to achieve smooth cable traction and avoid damage caused by uneven cable stress due to single traction force.

[0047] When the cable encounters an obstacle during traction, and the drag force on the cable exceeds a set threshold, this force is transmitted through the wire rope to the take-up drum 322, and then from the take-up drum 322 to the rotating shaft 321. The rotating shaft 321 drives the driven disc 323 to be simultaneously subjected to force, and the driven disc 323 generates a reverse thrust on the pin 328 inserted into the insertion slot 3231. When this reverse thrust is greater than the elastic thrust of the spring 326, the pin 328 moves into the mounting hole 3241 under the action of the thrust. As the tension continues to increase, the pin 328 gradually exits the insertion slot 3231. When the pin 328 is completely exited, the power connection between the drive disc 324 and the driven disc 323 is disconnected, the take-up drum 322 stops rotating, and the cable is no longer subjected to drag force, thereby preventing the cable from breaking or being damaged due to excessive tension. Once the obstruction is removed, the drag force on the cable disappears, and the elastic thrust of the spring 326 pushes the pin 328 to move towards the driven disc 323, re-inserting it into the corresponding insertion slot 3231. The drive disc 324 and the driven disc 323 resume power connection, and the device can resume normal traction operation.

[0048] However, as is well known to those skilled in the art, the working principles and wiring methods of motor I33 and motor II42 are conventional methods or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0049] 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 it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A smart grid cable erection traction device, characterized in that, include: The traction mechanism (3) includes a motor I (33), a wire rope winding roller (32) and a connecting assembly, wherein the connecting assembly is connected between the output end of the motor I (33) and the wire rope winding roller (32); The conveying mechanism (4) includes a mounting base (41), two oppositely arranged conveying components (45) and a motor II (42). The two conveying components (45) are mounted on the mounting base (41), and the motor II (42) is used to drive the conveying components (45) to run. The connecting assembly includes a drive disk (324), a driven disk (323), a pin (328), and a spring (326). The drive disk (324) is connected to the output end of the motor I (33), and the driven disk (323) is fixedly connected to the shaft (321) of the wire rope winding roller (32). The drive disk (324) is provided with a mounting hole (3241), the pin (328) is slidably installed in the mounting hole (3241), and the spring (326) is provided in the mounting hole (3241) and drives the pin (328) to extend out and insert into the insertion slot (3231) on the driven disk (323), so that the power of the drive disk (324) is transmitted to the driven disk (323). When the traction is overloaded, the pin (328) retracts into the mounting hole (3241) and disengages from the insertion slot (3231) against the elastic force of the spring (326), thereby disconnecting the power transmission; Each of the conveying components (45) includes a vacuum negative pressure chamber (4513) and a surrounding track (457). The inner side of the track (457) slides against the outer surface of the vacuum negative pressure chamber (4513). The track (457) has multiple through holes (4572). The vacuum negative pressure chamber (4513) is used to connect an external vacuum pump so that negative pressure is applied to the cable through the through holes (4572).

2. The smart grid cable erection traction device according to claim 1, characterized in that, The traction mechanism (3) also includes a base (31) and a gearbox (34). The wire rope winding roller (32) is rotatably mounted on the base (31). The motor I (33) and the gearbox (34) are fixed to the base (31). The output end of the motor I (33) is connected to the input end of the gearbox (34). The drive disk (324) is fixedly connected to the output end of the gearbox (34).

3. The smart grid cable erection traction device according to claim 2, characterized in that, The connecting assembly further includes a pressure plate (325) and a push rod (327). The pressure plate (325) is fixed to the side of the driven disk (323) facing the driving disk (324). The push rod (327) is slidably installed in the mounting hole (3241) and one end is fixedly connected to the pressure plate (325). The two ends of the spring (326) abut against the pin (328) and the push rod (327) respectively.

4. The smart grid cable erection traction device according to claim 1, characterized in that, The conveying assembly (45) further includes a lower connecting seat (451) and an upper connecting seat (4512), and the vacuum negative pressure chamber (4513) is fixed to the top of the lower connecting seat (451); a drive wheel (454) and a driven wheel (456) are rotatably mounted between the lower connecting seat (451) and the upper connecting seat (4512), and the track (457) is sleeved on the drive wheel (454) and the driven wheel (456).

5. The smart grid cable erection traction device according to claim 4, characterized in that, The conveying assembly (45) further includes a spline sleeve (453) and a gear (455). The bottom of the lower connecting seat (451) is provided with a mounting cavity (452). The spline sleeve (453) is rotatably mounted on one side of the lower connecting seat (451) and partially extends into the mounting cavity (452). The gear (455) is disposed in the mounting cavity (452) and connects the spline sleeve (453) and the drive wheel (454). The output end of the motor II (42) is provided with a spline shaft (46), which is simultaneously slidably inserted into the spline sleeve (453) of the two conveying components (45).

6. The smart grid cable erection traction device according to claim 4 or 5, characterized in that, The mounting base (41) is fixedly provided with two guide rods (43), one of which is a lower connecting seat (451) fixedly sleeved on the guide rod (43), and the other is a lower connecting seat (451) slidably sleeved on the guide rod (43); A lead screw (44) is rotatably mounted inside the mounting base (41), and a ball nut (4511) is connected to the bottom of the slidingly arranged lower connecting base (451). The ball nut (4511) and the lead screw (44) form a ball screw pair.

7. The smart grid cable erection traction device according to claim 4, characterized in that, The bearing seat for mounting the driven wheel (456) is slidably disposed within the upper connecting seat (4512) and the lower connecting seat (451); The top of the upper connecting seat (4512) and the bottom of the lower connecting seat (451) are provided with adjusting screws (458). The adjusting screws (458) are connected to the bearing seat through inserts (459) and locked by two locking nuts (4510) to adjust the position of the driven wheel (456) so as to tension or loosen the track (457).

8. The smart grid cable erection traction device according to claim 1, characterized in that, The inner side of the track (457) is provided with a guide part (4573), and the surface of the vacuum negative pressure chamber (4513) is provided with a guide groove that cooperates with the guide part (4573).

9. The smart grid cable erection traction device according to claim 8, characterized in that, The outer side of the track (457) is provided with an arc-shaped groove (4571) for accommodating the cable.

10. The smart grid cable erection traction device according to claim 8, characterized in that, Rubber sealing gaskets (4514) are fixed at both ends of the vacuum negative pressure chamber (4513), and the rubber sealing gaskets (4514) slide against the inner side of the track (457).

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