Auxiliary cable threading device and method

Abstract

The invention relates to the technical field of cable installation, in particular to an auxiliary cable threading device and method.The auxiliary cable threading device comprises lifting supporting assemblies which are arranged side by side and adjustable in height and at least two sets of conveying devices installed on the lifting supporting assemblies, and a middle driving shaft is connected between the two sets of conveying devices; the middle driving shaft is provided with a horizontal distance adjusting piece for adjusting the horizontal distance between the conveying devices, the middle driving shaft is further connected with a driving device in a rotating mode, the driving device comprises a power piece and a belt transmission assembly, and the belt transmission assembly is connected with the power piece and the middle driving shaft. The length or the position of the belt transmission assembly is adjusted, at least two sets of conveying devices are arranged to bear multiple cables at the same time, the multiple cables penetrate into the cable duct bank in parallel, the height of the conveying devices can be adjusted through the arrangement of the lifting supporting assembly so that the conveying devices can adapt to the layer height of different cable duct banks, and the accuracy and the reliability of threading operation are improved.

Description

Technical Field

[0001] This application relates to the technical field of cable installation, and in particular to a cable auxiliary threading device and method. Background Art

[0002] With the acceleration of the urbanization process, the scale of the underground power grid is constantly expanding, and the number of cable conduits in power wells has increased significantly (such as arrangement forms of 2×3, 2×4, 3×3, 3×4, etc.). The traditional manual threading method relies on workers to hold traction tools to thread cables one by one. Limited by the narrow space and complex conduit layout in the well, the construction efficiency has been difficult to improve for a long time.

[0003] In recent years, some mechanized auxiliary devices such as simple guiding devices and manual winches have been introduced to reduce labor intensity and improve efficiency. For example, the existing patent with the publication number CN218997556U discloses a cable threading device, which includes a cable winding machine. A cable conveying roller is provided on the cable winding machine, and a cable is wound on the cable conveying roller. An threading conveying assembly is provided outside the cable winding machine, which can also reduce the damage to the cable caused by dragging during the conveying process, reduce the probability of electric leakage, and improve the quality and efficiency of cable laying.

[0004] Regarding the above related technologies, there are still some deficiencies. The traditional manual threading method has low construction efficiency. The cable conveying height of some mechanized auxiliary devices is fixed, and manual intervention is still required to adjust the laying to make the cable thread smoothly. At the same time, the functions of the devices are relatively single and the usage scenarios are limited. Summary of the Invention

[0005] The purpose of the present invention is to provide a cable auxiliary threading device and method to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A cable auxiliary threading device, including: a lifting support assembly arranged side by side and with adjustable height, and a conveying device installed on the lifting support assembly for carrying and conveying cables. The conveying device is provided with at least two groups, and the two groups of conveying devices are arranged oppositely. An intermediate drive shaft is connected between the two groups of conveying devices. A horizontal spacing adjusting member for adjusting the horizontal spacing between the relative conveying devices is provided on the intermediate drive shaft. Among them, the intermediate drive shaft is also rotationally connected to a drive device. The drive device includes a power member and a belt transmission assembly. The belt transmission assembly is rotationally connected to the power member and the intermediate drive shaft. When the height position or horizontal position of the conveying device is adjusted, the length or position of the belt transmission assembly is adjusted accordingly.

[0007] By adopting the above technical solutions, parallel operation of multiple conveying devices is achieved. At least two groups of conveying devices are set to carry multiple cables simultaneously, enabling the multiple cables to be inserted into the cable duct in parallel. Batch operation is realized through synchronous control of cable transmission, effectively improving the cable threading efficiency. Each conveying device is independently driven with load balance, effectively avoiding cable slipping or damage caused by single-point overload. The arrangement of the conveying device on the lifting support assembly enables the conveying device to adapt to the layout of the cable duct. By adjusting the height of the lifting support assembly, the position height of the conveying device is adjusted, so that the conveying device can adapt to the floor heights of different cable ducts, and further enable the cables on the conveying device to smoothly extend into the cable duct, avoiding friction between the cables and the duct openings, and improving the accuracy and reliability of the threading operation. An intermediate drive shaft is provided to connect the two groups of conveying devices, and a horizontal spacing adjusting member is provided on the intermediate drive shaft to adjust the distance between the two relatively arranged groups of conveying devices in the horizontal direction, and further adjust the distance between two cables in the same plane to meet the requirements of the conveying device for conveying power ducts of different sizes. The driving device provides power for the conveying device and provides dynamic compensation, that is, the length or position of the belt transmission assembly is adjusted correspondingly following the adjustment of the height position or horizontal position of the conveying device.

[0008] Preferably, the belt transmission assembly includes a power belt and transmission pulleys installed at the power output end of the power member and on the intermediate drive shaft. One end of the power belt is connected to the transmission pulley on the power member, and the other end is connected to the transmission pulley on the intermediate drive shaft, and transmits the power output by the power member to the intermediate drive shaft.

[0009] By adopting the above technical solutions, the horizontal spacing between the relative conveying devices is automatically adjusted by the intermediate drive shaft, effectively solving the axis deviation caused by the bending or vibration of the duct. The setting of the transmission pulley compensates for the deflection angle of the intermediate drive shaft, reducing the eccentric wear of the power belt. The power is output from the power member to the transmission pulley installed at the output end of the power member, and the power belt is driven to rotate by the transmission pulley, and then the power is transmitted to the transmission pulley located on the intermediate drive shaft, providing rotational power for the intermediate drive shaft, and then the intermediate drive shaft drives the conveying device to move the cable into or out of the cable duct.

[0010] Preferably, the two groups of conveying devices are arranged in a row in the horizontal direction, and there are two rows of the conveying devices in the height direction. The conveying devices on the same side are installed on the same lifting support assembly, and the driving devices of the two rows of conveying devices are arranged in a vertical offset.

[0011] By adopting the above technical solution, the conveying devices are arranged in a row in the horizontal direction and are divided into upper and lower rows in the height direction to form a double-layer operation, thereby effectively increasing the number of cables that can be carried and conveyed, further improving the cable threading efficiency. The conveying devices located in the upper layer convey the cables close to the high-level cable conduits, and the conveying devices located in the lower layer convey the cables close to the ground or the middle conduits, adapting to the cable conduit layout with a larger number of cables and improving the applicability of the device. The driving devices of the upper and lower rows of conveying devices are arranged staggeredly in the vertical direction to form a double-layer staggered driving structure, effectively reducing the equipment width to adapt to the narrow working environment in the power manhole and facilitating the maintenance by the staff.

[0012] Preferably, the conveying device includes a fixing plate fixedly connected to the lifting support assembly for receiving the supporting force provided by the lifting support assembly. A conveyor wheel is installed beside the fixing plate. The conveyor wheel is rotatably connected to one side of the intermediate drive shaft and receives the rotational power transmitted by the intermediate drive shaft. A conveyor belt is covered and installed on the conveyor wheel. The conveyor belt is used to carry the cable and receive the rotational power transmitted by the conveyor wheel, and reciprocally rotates towards the end of the cable moving into the cable conduit.

[0013] By adopting the above technical solution, the cable is laid flat on the conveyor belt, and the position of the cable is fixed by the frictional force on the belt surface. The conveyor wheel receives the rotational power transmitted by the intermediate drive shaft, thereby driving the conveyor belt to reciprocally rotate towards the end of the cable moving into the cable conduit. The cable is fed into the conduit at a constant speed. The fixing plate is locked and fixed to the lifting support assembly through a connecting member to ensure the overall structural stability of the device.

[0014] Preferably, the lifting support assembly includes a plurality of support rods, and the plurality of support rods are slidably connected to each other. The conveying device is installed on the support rods. A collar is provided between adjacent support rods, and the support rods are slidably connected within the collar. A locking member for locking the collar and the support rod is provided on the collar.

[0015] By adopting the above technical solution, each telescopic rod is independently connected to the four corners of the conveying device, and the horizontal height of the conveying device is finely adjusted by separately adjusting the height of the telescopic rod. While the overall height of the telescopic rod is adjusted to raise or lower the conveying device as a whole, the problem of cable bending caused by the deviation between the conduit interface and the axis of the conveying device is solved. The setting of the support rods restricts the telescopic rods to move only in the vertical direction, avoiding the imbalance of the conveying device caused by the lateral deviation of the telescopic rods and ensuring a stable lifting process. The locking member enables the telescopic rods to expand and contract synchronously.

[0016] Preferably, the cable auxiliary threading device further includes a storage battery, and the storage battery is electrically connected to the driving device.

[0017] By adopting the above technical solution, the storage battery powers the driving device through the power cord. By using the storage battery to supply power instead of an external power supply, the possibility of electric shock accidents of the staff is effectively reduced.

[0018] Preferably, the cable auxiliary threading device further includes a control component, which is provided in at least two groups, and the two groups of control components are both installed on the fixing plate of the conveying device and electrically connected to the power component, and are used to provide operating power for the driving device and control the start and stop of the driving device. Each element constituting the control component is connected in series with each other.

[0019] By adopting the above technical solution, the control component is used to control the power component to stop or start working. At the same time, the control component supplies power to the power component instead of an external power supply, effectively reducing the possibility of electric shock accidents of the staff.

[0020] Preferably, the control component includes a controller electrically connected to the power component through a power cord, and a display unit electrically connected to the controller through a signal line. The controller is electrically connected to the storage battery through the power cord.

[0021] By adopting the above technical solution, the storage battery supplies power to the controller and the power component through the power cord, and the display unit is electrically connected to the controller through the signal line. A display unit for displaying the cable transmission length and a controller for controlling the start and stop of the power component are provided at the position of the fixing plate. According to the length of the power cable duct or the primary threading length of the cable, the length is set on the display unit. When the set length is reached, the display unit transmits a signal to the controller to drive the motor to automatically stop working; the controller can also be used to manually control the motor to stop or start working.

[0022] Preferably, the cable auxiliary threading device further includes a connecting sleeve installed on the outer wall of the cable insertion end through a fixing member, and an exhaust component provided in the connecting sleeve with the air outlet end facing the advancing direction of the cable and the bottom side of the inner wall of the cable duct. A lubricating component for lubricating the inner wall of the cable duct is installed in the connecting sleeve.

[0023] By adopting the above technical solution, the connecting sleeve is fixed to the cable insertion end through a fixing member, ensuring that the connecting sleeve moves synchronously with the cable insertion end and does not slip off. After entering the cable duct, the air flow blown out from the air outlet end of the exhaust assembly forms an air curtain, which then follows the cable insertion to blow impurities such as dust and sand at the bottom of the cable duct all the way to the end where the cable exits the cable duct and is discharged from the duct. First, the large-particle impurities under the duct are removed through the air outlet end of the exhaust assembly, and then the lubricating assembly is brought into contact with the lower wall of the duct to release lubricating liquid to form a lubricating oil film. At the same time, the oil film can isolate the attachment of fine dust. The subsequent cable entering the cable duct moves forward on the lubricating oil film, further reducing the friction between the outer surface of the cable and the inner wall of the duct, and also preventing the lubricant from being contaminated by dust and becoming ineffective. After the wire threading is completed, the fixing member can be loosened to remove the connecting sleeve, and the connecting sleeve can be reused after cleaning.

[0024] Preferably, the suction end of the exhaust assembly is inclined upward towards the upper part of the inner wall of the cable duct.

[0025] By adopting the above technical solution, the suction end of the exhaust assembly is inclined upward to suck in the air flow, and then the air flow is guided to the air outlet end of the exhaust assembly. The high-pressure air flow is ejected from the air outlet end of the exhaust assembly to blow the sand and dust under the cable duct towards the duct outlet. At the same time, the inclined upward setting of the suction end of the exhaust assembly can suck the suspended dust above the inner wall of the cable duct and the impurities attached to the upper part of the cable duct. After cleaning the upper part of the duct, the friction coefficients of the contact surfaces of the cable with the duct wall in all directions during the wire threading process tend to be consistent, effectively avoiding the increase in local resistance caused by the residual sand and gravel above the duct and then the wear of the insulating layer on the outer surface of the cable. At the same time, the dust on the top of the duct that has not been cleaned will spread again under the vibration of the cable wire threading. After cleaning, the concentration of airborne particles in the duct effectively decreases, and thus the cable insulation failure rate during the operation and maintenance stage after installation is effectively reduced.

[0026] Preferably, the exhaust assembly includes a blowing nozzle provided at the bottom of the insertion end of the connecting sleeve for blowing out the air flow, and the air flow blown out by the blowing nozzle is directed towards the lower part of the inner wall of the cable duct and towards the end where the cable exits the cable duct. A micro fan for providing a blowing air source for the blowing nozzle is provided at the end of the connecting sleeve. An exhaust channel is provided between the micro fan and the blowing nozzle, and the exhaust channel transmits the air flow sucked by the micro fan to the blowing nozzle and is blown out by the blowing nozzle.

[0027] By adopting the above technical solution, when the cable starts to be inserted into the pipe row, the micro fan inhales external air to form a high-pressure air flow. The high-pressure air flow is transported to the blowing nozzle through the exhaust passage. The blowing nozzle sprays the air flow in a fan-shaped diffusion manner to cover the bottom area of the cable pipe row. The sprayed air flow carries the sand and gravel at the bottom of the cable pipe row and pushes them along the direction in which the cable is moved out of the pipe row. As the cable is continuously inserted into the pipe, the connecting sleeve moves forward synchronously, and the blowing nozzle continuously purges the newly exposed bottom of the pipe row, effectively preventing impurities from accumulating at the bottom of the pipe row and affecting the cable threading.

[0028] Preferably, the lubrication assembly includes an accommodation cavity disposed between the inner side of the outer wall and the outer side of the inner wall of the connecting sleeve for accommodating a lubricating liquid. An oil storage cotton strip is disposed in the accommodation cavity. One end of the oil storage cotton strip is installed in the accommodation cavity and absorbs the lubricating liquid in the accommodation cavity. The other end of the oil storage cotton strip contacts the lower part of the inner wall of the cable pipe row and smears and releases the lubricating liquid.

[0029] By adopting the above technical solution, an accommodation cavity is provided in the connecting sleeve to store the lubricating liquid. When the cable is traction-moved, the oil storage cotton strip at the lubricating end of the lubrication assembly contacts the lower inner wall of the cable pipe row, and the lubricating liquid absorbed from one end installed in the accommodation cavity is smeared and released through the end in contact with the lower part of the inner wall of the cable pipe row, forming a lubricating oil film on the inner wall of the cable pipe row in contact, reducing the friction between the cable and the inner wall of the cable pipe row, and avoiding damage to the outer surface of the cable caused by excessive friction.

[0030] On the other hand, a cable auxiliary threading method provided by the present application adopts the following technical solution: A cable auxiliary threading method includes the following steps: S11. Align the axis of the conveying device with the cable pipe row inlet by adjusting the height of the lifting support assembly; S12. Adjust the distance between adjacent cables in the same plane by adjusting the horizontal spacing adjusting member to meet different sizes of power pipe rows; S13. After the position adjustment is completed, start the conveying device, and the conveying device moves the cable into or out of the cable pipe row.

[0031] By adopting the above technical solution, the operator can adjust the height of the lifting support assembly to further adjust the position height of the conveying device, so that the conveying device adapts to the floor heights of different cable conduits, and then the cables on the conveying device can smoothly extend into the cable conduits, avoiding friction between the cables and the conduit openings, improving the accuracy and reliability of the threading operation. By adjusting the telescopic length of the intermediate drive shaft, the distance between adjacent conveying devices is correspondingly changed, so that the conveying devices can transport to meet the requirements of different sizes of power conduits. At the same time, the distance between the driving pulleys is synchronously adjusted to ensure that the tension of the power belt remains constant and the transportation stability is maintained. After the position adjustment is completed, the driving device provides power for the conveying device, and the conveying device starts the threading operation to thread the cable into the cable conduit.

[0032] In summary, the present application includes at least one of the following beneficial technical effects: 1. By arranging a plurality of conveying devices to simultaneously carry multiple cables, the multiple cables are threaded into the cable conduit in parallel, effectively improving the cable threading efficiency. The lifting support assembly is set to adapt to the cable conduit layout. By adjusting the vertical distance between the plurality of conveying devices to adapt to the floor heights of different cable conduits, the cables on the conveying device can be smoothly threaded, avoiding friction between the cables and the conduit inlets, and effectively improving the accuracy and reliability of the threading operation.

[0033] 2. By setting the length on the display unit, when the cable conveyed by the conveying device reaches the one-time threading length or the length of the power conduit, when the conveyed cable reaches the set length, the display unit transmits a signal to the controller to drive the motor to automatically stop working; the motor can also be manually controlled to start and stop using the controller. At the same time, the battery is used for power supply instead of the external power supply, effectively reducing the possibility of electric shock accidents for the staff.

[0034] 3. By the suction end of the connecting sleeve, large particle impurities under the conduit are removed, and then the lubricating end of the connecting sleeve is brought into contact with the lower wall of the conduit to release the lubricant to form a lubricating oil film, further reducing the friction between the outer surface of the cable and the inner wall of the conduit, and also avoiding the lubricant being contaminated by dust and becoming ineffective. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is the front view overall structure schematic diagram of the first embodiment of the present application; Figure 2 It is the side view overall structure schematic diagram of the first embodiment of the present application; Figure 3 It is the front view overall structure schematic diagram of another embodiment of the present application; Figure 4 It is the side view overall structure schematic diagram of another embodiment of the present application; Figure 5 It is the sectional structure schematic diagram of another embodiment of the present application; Figure 6Schematic diagram of the overall structure of the connecting sleeve according to another embodiment of the present application; Figure 7 Schematic cross-sectional structure diagram of the connecting sleeve according to another embodiment of the present application.

[0036] Description of reference numerals: 1, lifting support assembly; 110, support rod; 120, collar; 130, locking member; 2, conveying device; 21, fixing plate; 22, conveyor wheel; 23, conveyor belt; 3, intermediate drive shaft; 4, horizontal spacing adjusting member; 5, drive device; 51, power member; 52, belt drive assembly; 521, power belt; 522, drive pulley; 6, storage battery; 7, power cord; 8, control assembly; 81, controller; 82, signal line; 83, display unit; 9, connecting sleeve; 10, exhaust assembly; 101, air blowing nozzle; 102, micro fan; 103, exhaust passage; 104, filtering device; 11, lubrication assembly; 111, accommodating cavity; 112, oil storage cotton strip; 12, fixing member. Detailed description of the specific implementation

[0037] The following will Figures 1-6 further describe the present application in detail.

[0038] As Figure 1 and Figure 2 shown, an embodiment of the present application discloses a cable auxiliary threading device, including: a lifting support assembly 1 arranged side by side and with adjustable height, and a conveying device 2 installed on the lifting support assembly 1 for carrying and conveying cables. The conveying device 2 is provided with at least two groups and the two groups of conveying devices 2 are arranged oppositely. An intermediate drive shaft 3 is connected between the two groups of conveying devices 2. A horizontal spacing adjusting member 4 for adjusting the horizontal spacing relative to the conveying device 2 is provided on the intermediate drive shaft 3. Among them, the intermediate drive shaft 3 is rotatably connected to a drive device 5. The drive device 5 includes a power member 51 and a belt drive assembly 52. The belt drive assembly 52 is rotatably connected to the power member 51 and the intermediate drive shaft 3. When the height position or the horizontal position of the conveying device 2 is adjusted, the length or the position of the belt drive assembly 52 is adjusted accordingly.

[0039] As Figure 1 and Figure 2As shown, by setting at least two sets of conveying devices 2 to carry multiple cables simultaneously, multiple cables are inserted into the cable duct in parallel. Through synchronous control of cable transmission, batch operation is achieved, effectively improving the cable threading efficiency. Each conveying device 2 is independently driven with load balance, effectively avoiding cable slipping or damage caused by single-point overload. The installation of the conveying device 2 on the lifting support assembly 1 enables the conveying device 2 to adapt to the cable duct layout. By adjusting the height of the lifting support assembly 1, the position height of the conveying device 2 is adjusted, so that the conveying device 2 can adapt to the floor height of different cable ducts, and then the cable on the conveying device 2 can smoothly extend into the cable duct, avoiding friction between the cable and the duct opening, and improving the accuracy and reliability of the threading operation. A middle drive shaft 3 is set to connect the two sets of conveying devices 2, and a horizontal spacing adjusting member 4 is arranged on the middle drive shaft 3 to adjust the distance between the two sets of conveying devices 2 arranged oppositely in the horizontal direction, and then adjust the distance between two cables on the same plane to meet the requirement that the conveying device 2 can convey power ducts of different sizes. The driving device 5 provides power for the conveying device 2 and provides dynamic compensation, that is, the length or position of the belt transmission assembly 52 is adjusted correspondingly following the adjustment of the height position or horizontal position of the conveying device 2.

[0040] As Figure 1 and Figure 2 shown, the belt transmission assembly 52 includes a power belt 521 and transmission pulleys 522 installed at the power output end of the power member 51 and on the middle drive shaft 3. One end of the power belt 521 is connected to the transmission pulley 522 on the power member 51, and the other end is connected to the transmission pulley 522 on the middle drive shaft 3, and transmits the power output by the power member 51 to the middle drive shaft 3. By automatically adjusting the horizontal spacing between the opposite conveying devices 2 through the middle drive shaft 3, the axis deviation caused by the bending or vibration of the duct is effectively solved. The setting of the transmission pulley 522 compensates for the deflection angle of the middle drive shaft 3 and reduces the eccentric wear of the power belt 521. The power is output from the power member 51 to the transmission pulley 522 installed at the power output end of the power member 51. The transmission pulley 522 drives the power belt 521 to rotate and then transmits the power to the transmission pulley 522 located on the middle drive shaft 3, providing rotational power for the middle drive shaft 3, and then the middle drive shaft 3 drives the conveying device 2 to move the cable into or out of the cable duct.

[0041] As Figure 1 and Figure 2As shown, two sets of conveying devices 2 are arranged in a row horizontally. The conveying devices 2 are arranged in two rows in the height direction. The conveying devices 2 on the same side are installed on the same lifting support assembly 1. The driving devices 5 of the two rows of conveying devices 2 are arranged in a vertical offset. The conveying devices 2 are arranged in a row horizontally and are divided into upper and lower two rows in the height direction to form a double-layer operation, thereby effectively increasing the number of cables that can be carried and conveyed, further improving the cable threading efficiency. The cables close to the high-level cable ducts are conveyed by the conveying devices 2 in the upper layer, and the cables close to the ground or the middle ducts are conveyed by the conveying devices 2 in the lower layer, adapting to a larger number of cable duct layouts to improve the applicability of the device. The driving devices 5 of the upper and lower two rows of conveying devices 2 are arranged in a vertical offset to form a double-layer offset driving structure, effectively reducing the equipment width to adapt to the narrow working environment in the manhole, and also facilitating the maintenance by the staff.

[0042] As Figure 1 and Figure 2 As shown, the conveying device 2 includes a fixing plate 21 fixedly connected to the lifting support assembly 1 for receiving the supporting force provided by the lifting support assembly 1. A conveying wheel 22 is installed beside the fixing plate 21. The conveying wheel 22 is rotatably connected to one side of the intermediate driving shaft 3 and receives the rotational power transmitted by the intermediate driving shaft 3. A conveying belt 23 is covered and installed on the conveying wheel 22. The conveying belt 23 is used to carry the cable and receive the rotational power transmitted by the conveying wheel 22, and reciprocally rotates toward the end of the cable moving into the cable duct, laying the cable flat on the conveying belt 23, and fixing the position of the cable by the frictional force on the surface of the conveying belt 23. The conveying wheel 22 receives the rotational power transmitted by the intermediate driving shaft 3, thereby driving the conveying belt 23 to reciprocally rotate toward the end of the cable moving into the cable duct. The cable is fed into the duct at a constant speed. The fixing plate 21 is locked and fixed to the lifting support assembly 1 through a connecting member to ensure the overall structural stability of the device.

[0043] As Figure 1 and Figure 2As shown in the figure, the lifting support assembly 1 includes a plurality of support rods 110. The plurality of support rods 110 are slidably connected to each other. The conveying device 2 is installed on the support rods 110. A collar 120 is provided between adjacent support rods 110, and the support rods 110 are slidably connected within the collar 120. A locking member 130 for locking the collar 120 and the support rod 110 is provided on the collar 120. Each lifting support assembly 1 is independently connected to the four corners of the conveying device 2. By individually adjusting the height of the lifting support assembly 1, fine adjustment of the horizontal plane height of the conveying device 2 can be achieved. And by adjusting the height of the lifting support assembly 1 as a whole, the conveying device 2 can be lifted or lowered as a whole, solving the problem of cable bending caused by the deviation between the pipe connection and the axis of the conveying device 2. The setting of the support rods 110 restricts the lifting support assembly 1 to move only in the vertical direction, avoiding the imbalance of the conveying device 2 caused by the lateral offset of the lifting support assembly 1 and ensuring a stable lifting process. When the locking member 130 is actuated, the lifting support assembly 1 expands and contracts synchronously.

[0044] As Figure 1 and Figure 2 shown in the figure, the cable auxiliary threading device further includes a storage battery 6. The storage battery 6 is electrically connected to the driving device 5, and the storage battery 6 supplies power to the driving device 5 through a power cord 7. By using the storage battery 6 to supply power instead of an external power supply, the possibility of electric shock accidents of the staff is effectively reduced.

[0045] As Figures 1-2 shown in the figure, the cable auxiliary threading device further includes a control assembly 8. It is at least provided in two groups, and the two groups of control assemblies 8 are both installed on the fixed plate 21 of the conveying device 2 and are electrically connected to the power member 51, used to provide operating power for the driving device 5 and control the start and stop of the driving device 5. The components constituting the control assembly 8 are connected in series with each other. Using the control assembly 8 can control the power member 51 to stop or start working.

[0046] Specifically, the control assembly 8 includes a controller 81 electrically connected to the power member 51 through a power cord 7, and a display unit 83 electrically connected to the controller 81 through a signal line 82. The controller 81 is electrically connected to the storage battery 6 through a power cord 7. The storage battery 6 supplies power to the controller 81 and the power member 51 through the power cord 7. The display unit 83 is electrically connected to the controller 81 through the signal line 82. A display unit 83 for displaying the cable transmission length and a controller 81 for controlling the start and stop of the power member 51 are provided at the position of the fixed plate 21. During operation, according to the length of the power pipe or the length of a single cable threading, the length is set on the display unit 83. When the cable is transmitted to the set length, the display unit 83 transmits a signal to the controller 81 to drive the motor to automatically stop working; the motor can also be manually controlled to stop or start working by using the controller 81.

[0047] The implementation principle of Embodiment 1 is as follows: Multiple conveying devices 2 are arranged to carry multiple cables simultaneously, enabling the multiple cables to be inserted into the cable duct in parallel, thereby improving the cable threading efficiency. The lifting support assembly 1 is provided to adapt to the duct layout. By adjusting the vertical distance between the multiple conveying devices 2, the height of different cable ducts can be adapted, so that the cables on the conveying devices 2 can smoothly extend into the cable ducts. The driving device 5 provides power for the conveying devices 2. An intermediate driving shaft 3 is provided to connect two groups of conveying devices 2, and a horizontal spacing adjusting member 4 is arranged on the intermediate driving shaft 3 to adjust the distance between the two groups of relatively arranged conveying devices 2 in the horizontal direction, thereby adjusting the distance between two cables in the same plane to meet the requirement that the conveying devices 2 can convey power ducts of different sizes.

[0048] Embodiment 2 Please refer to Figures 3-7 , the difference between this embodiment and Embodiment 1 is that the cable auxiliary threading device further includes a connecting sleeve 9 installed on the outer wall of the cable insertion end through a fixing member 12, an exhaust assembly 10 arranged in the connecting sleeve 9 with the air outlet end facing the advancing direction of the cable and the bottom side of the inner wall of the cable duct, and a lubricating assembly 11 installed in the connecting sleeve 9 for lubricating the inner wall of the cable duct.

[0049] As Figures 3-7 shown, the connecting sleeve 9 is fixed to the cable insertion end through the fixing member 12 to ensure that the connecting sleeve 9 moves synchronously with the cable insertion end and does not slip off. After entering the cable duct, the air flow blown downward by the air outlet end of the exhaust assembly 10 forms an air curtain, which then follows the cable insertion to blow impurities such as dust and sand at the bottom of the cable duct all the way to the end of the cable duct where the cable exits and is discharged from the duct. First, the large-particle impurities under the duct are removed by the air outlet end of the exhaust assembly 10, and then the lubricating assembly 11 is brought into contact with the lower wall of the duct to release lubricating liquid to form a lubricating oil film. At the same time, the oil film can isolate the attachment of fine dust. The subsequent cable entering the cable duct moves forward on the lubricating oil film, further reducing the friction between the outer surface of the cable and the inner wall of the duct, and also preventing the lubricant from being contaminated by dust and becoming ineffective. After the threading is completed, the fixing member 12 can be loosened to remove the connecting sleeve 9, and the connecting sleeve 9 can be reused after cleaning.

[0050] As Figures 3-4As shown, the suction end of the exhaust assembly 10 is inclined upward towards the upper part of the inner wall of the cable duct, so that the suction end of the exhaust assembly 10 sucks in the air flow obliquely upward, and then guides the air flow to the outlet end of the exhaust assembly 10. The high-pressure air flow is ejected from the outlet end of the exhaust assembly 10 to blow the sand and dust under the cable duct towards the outlet of the duct. At the same time, the suction end of the exhaust assembly 10 being inclined upward can suck the suspended dust above the inner wall of the cable duct and the impurities attached to the upper part of the cable duct. After cleaning the upper part of the duct, the friction coefficients of all directions of the contact surface between the cable and the duct wall during the cable threading process tend to be consistent, effectively avoiding the increase in local resistance due to the residual sand and gravel above the duct and then the wear of the cable outer insulation layer. At the same time, the dust on the top of the duct that has not been cleaned will spread again under the vibration of the cable threading. After cleaning, the concentration of air particles in the duct is effectively reduced, and further the cable insulation failure rate during the operation and maintenance stage after installation is effectively reduced.

[0051] As Figures 4-5 shown, the exhaust assembly 10 includes a blowing nozzle 101 provided at the bottom of the extending end of the connecting sleeve 9 for blowing out air flow, and the air flow blown out by the blowing nozzle 101 is directed towards the lower part of the inner wall of the cable duct and towards the end of the cable duct where the cable is removed. A micro fan 102 for providing a blowing air source for the blowing nozzle 101 is provided at the end of the connecting sleeve 9. An exhaust passage 103 is provided between the micro fan 102 and the blowing nozzle 101. The exhaust passage 103 transmits the air flow inhaled by the micro fan 102 to the blowing nozzle 101 and is blown out by the blowing nozzle 101. When the cable starts to be inserted into the duct, the micro fan 102 inhales external air to form a high-pressure air flow. The high-pressure air flow is transported to the blowing nozzle 101 through the exhaust passage 103. The blowing nozzle 101 sprays the air flow in a fan-shaped diffusion manner to cover the bottom area of the cable duct. The sprayed air flow carries the sand and gravel at the bottom of the cable duct and pushes them along the direction where the cable is removed from the cable duct. As the cable is continuously inserted into the duct, the connecting sleeve 9 advances synchronously, and the blowing nozzle 101 continuously purges the newly exposed bottom of the duct, effectively preventing impurities from accumulating at the bottom of the duct and affecting the cable threading.

[0052] As Figures 6-7 shown, a filtering device 104 is provided on the side of the micro fan 102 close to the inhaled air flow. The filtering device 104 is used to prevent dust and other impurities from entering the exhaust assembly 10 along with the inhaled air flow, thereby avoiding the blockage of the exhaust passage 103 or the blowing nozzle 101 by dust and other impurities. The inclined upward suction end sucks the suspended dust by the suction force generated by the micro fan 102. The clean air enters the exhaust passage 103 after being filtered by the filtering device 104 and is then ejected through the blowing nozzle 101, effectively reducing the energy consumption of the exhaust assembly 10. Among them, the filtering device 104 can be set as a filter net or a filter element.

[0053] As Figures 6-7As shown in the figure, the lubrication assembly 11 includes a receiving cavity 111 disposed between the inner side of the outer wall and the outer side of the inner wall of the connecting sleeve 9 for containing lubricating liquid. A storage cotton strip 112 is disposed in the receiving cavity 111. One end of the storage cotton strip 112 is installed in the receiving cavity 111 and absorbs the lubricating liquid in the receiving cavity 111. The other end of the storage cotton strip 112 contacts the lower inner wall of the cable conduit and applies and releases the lubricating liquid. A receiving cavity 111 is provided in the connecting sleeve 9 to store the lubricating liquid. When the cable is tractioned and moved, the storage cotton strip 112 at the lubricating end of the lubrication assembly 11 contacts the lower inner wall of the cable conduit, and the lubricating liquid absorbed from one end installed in the receiving cavity 111 is applied and released through the end in contact with the lower inner wall of the cable conduit, forming a lubricating oil film on the inner wall of the cable conduit in contact, reducing the friction between the cable and the inner wall of the cable conduit, and avoiding damage to the outer surface of the cable caused by excessive friction. Among them, an inlet for replenishing the lubricating liquid and a seal for sealing the inlet are further provided on one side of the connecting sleeve 9 close to the micro fan 102.

[0054] The implementation principle of the second embodiment is as follows: The air flow blown out from the air outlet end of the connecting sleeve 9 forms an air curtain. The air curtain follows the cable and extends in, blowing impurities such as dust and sand at the bottom of the cable conduit all the way to the end where the cable exits the cable conduit. The air inlet end of the connecting sleeve 9 is inclined upward, which can suck and adsorb the impurities adhering to the upper part of the cable conduit, making the friction coefficients of the contact surfaces of the cable with the pipe wall in all directions tend to be consistent during the cable threading process. At the same time, the large-particle impurities under the conduit are first removed through the air inlet end of the connecting sleeve 9, and then the lubricating end of the connecting sleeve 9 is brought into contact with the lower wall of the conduit to release the lubricant to form a lubricating oil film, further reducing the friction between the outer surface of the cable and the inner wall of the conduit, and also avoiding the lubricant from being contaminated by dust and becoming ineffective.

[0055] Embodiment Three Please refer to Figures 1-7 This application's Embodiment Three discloses a method for detecting an automotive dust cover, including the following steps: S11. Align the axis of the conveying device 2 with the cable conduit inlet by adjusting the height of the lifting support assembly 1.

[0056] Specifically, the operator adjusts the position height of the conveying device 2 by adjusting the height of the lifting support assembly 1, so that the conveying device 2 adapts to the floor heights of different cable conduits, and then the cable on the conveying device 2 can smoothly extend into the cable conduit, avoiding friction between the cable and the conduit inlet, and improving the accuracy and reliability of the threading operation.

[0057] S12. Adjust the distance between adjacent cables in the same plane by adjusting the horizontal spacing adjusting member 4 to meet different sizes of power conduits.

[0058] Specifically, by adjusting the telescopic length of the intermediate drive shaft 3, the distance between adjacent conveying devices 2 is correspondingly changed, so as to enable the conveying device 2 to convey power pipes of different sizes, and at the same time, the distance between the driving pulleys 522 is synchronously adjusted to ensure that the tension of the power belt 521 is constant and the transportation stability is maintained.

[0059] S13. After the position adjustment is completed, start the conveying device 2, and the conveying device 2 moves the cable into or out of the cable pipe.

[0060] Specifically, after the position adjustment is completed, the driving device 5 provides power for the conveying device 2, and the conveying device 2 starts the threading operation to make the cable penetrate into the cable pipe.

[0061] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cable auxiliary threading device, characterized in that Comprising: Lifting support assemblies (1), arranged side by side and the height of the lifting support assemblies (1) being adjustable; A conveying device (2) for carrying and conveying cables, the conveying device (2) being mounted on the lifting support assemblies (1), the conveying device (2) being provided with at least two sets and the two sets of conveying devices (2) being arranged oppositely, and an intermediate drive shaft (3) being connected between the two sets of conveying devices (2); A horizontal spacing adjusting member (4) provided on the intermediate drive shaft (3) for adjusting the horizontal spacing relative to the conveying device (2); A drive device (5) comprising a power member (51) and a belt drive assembly (52), the belt drive assembly (52) being connected to the power member (51) and the intermediate drive shaft (3), wherein when the height position or the horizontal position of the conveying device (2) is adjusted, the length or the position of the belt drive assembly (52) is adjusted accordingly.

2. The cable auxiliary threading device according to claim 1, wherein The two sets of conveying devices (2) are arranged in a row in the horizontal direction, the conveying device (2) is provided with two rows in the height direction, the conveying devices (2) on the same side are mounted on the same lifting support assembly (1), and the drive devices (5) of the two rows of conveying devices (2) are arranged offset in the vertical direction.

3. The cable auxiliary threading device according to claim 1, wherein The conveying device (2) comprises: A fixing plate (21) mounted on the lifting support assembly (1); A conveying wheel (22) having one end rotatably connected to the fixing plate (21) and the other end fixedly connected to one end of the intermediate drive shaft (3); A transmission belt provided on the conveying wheel (22), the top surface of the transmission belt being used for supporting the cable.

4. A cable auxiliary threading device according to claim 1, characterized in that, The lifting support assembly (1) comprises: Support rods (110), provided in multiple numbers and slidably connected between the multiple support rods (110), the conveying device (2) being mounted on the support rods (110); Collars (120) provided between adjacent support rods (110), and the support rods (110) being slidably connected within the collars (120); Locking members (130) provided on the collars (120) for locking the collars (120) and the support rods (110).

5. An auxiliary cable threading device according to claim 1, characterized in that, The cable auxiliary threading device further comprises a storage battery (6), the storage battery (6) being electrically connected to the drive device (5).

6. The cable auxiliary threading device according to claim 1, wherein The cable auxiliary threading device further comprises: A connecting sleeve (9) mounted at the cable insertion end; An exhaust assembly (10) provided within the connecting sleeve (9), and the air outlet end of the exhaust assembly (10) facing the cable advancing direction and the bottom side of the inner wall of the cable duct; A lubricating assembly (11) provided on the outer wall of the connecting sleeve (9) for lubricating the inner wall of the cable duct.

7. The cable auxiliary threading device according to claim 6, characterized in that, The air inlet end of the exhaust assembly (10) is inclined towards the upper part of the inner wall of the cable duct.

8. The cable auxiliary threading device according to claim 7, characterized in that: The exhaust assembly (10) comprises: A blowing nozzle (101) provided at the bottom of the insertion end of the connecting sleeve (9) for blowing out an air flow, and the blown air flow facing the bottom side of the inner wall of the cable duct and the end of the cable duct where the cable is removed; A micro fan (102) provided at the end of the connecting sleeve (9) for providing a blowing air source for the blowing nozzle (101); An exhaust passage (103) is provided between the micro fan (102) and the blowing nozzle (101) for transmitting the air flow inhaled by the micro fan (102) to the blowing nozzle (101) and blowing it out from the blowing nozzle (101).

9. The cable auxiliary threading device according to claim 6, characterized in that: The lubricating assembly (11) includes: A receiving cavity (111) is provided between the inner side of the outer wall and the outer side of the inner wall of the connecting sleeve (9) for receiving lubricating liquid; An oil storage cotton strip (112) has one end installed in the receiving cavity (111) to absorb the lubricating liquid in the receiving cavity (111), and the other end contacts the lower part of the inner wall of the cable duct and applies and releases the lubricating liquid.

10. A cable auxiliary threading method, based on the cable auxiliary threading device according to any one of claims 1-9, characterized in that, Comprising the following steps S11. Align the axis of the conveying device (2) with the cable duct inlet by adjusting the height of the lifting support assembly (1); S12. Adjust the distance between adjacent cables in the same plane by adjusting the horizontal spacing adjusting member (4) to meet cable ducts of different sizes; S13. After the position adjustment is completed, start the conveying device (2), and the conveying device (2) moves the cable into or out of the cable duct.

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