CN113104657A - Cable conveying equipment and cable conveying method - Google Patents
Cable conveying equipment and cable conveying method Download PDFInfo
- Publication number
- CN113104657A CN113104657A CN202110541360.2A CN202110541360A CN113104657A CN 113104657 A CN113104657 A CN 113104657A CN 202110541360 A CN202110541360 A CN 202110541360A CN 113104657 A CN113104657 A CN 113104657A
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- cable
- control module
- turning device
- conveying
- traction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/18—Methods or apparatus in which packages rotate
- B65H49/20—Package-supporting devices
- B65H49/30—Swifts or skein holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
- B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
- B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
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- Electric Cable Installation (AREA)
Abstract
The invention discloses cable conveying equipment and a cable conveying method, and belongs to the technical field of cable conveying. The cable conveying equipment comprises a cable reel, a driving device, a portal frame, a vertical turning device, a plurality of electric rollers, a traction device and a control module, wherein the cable reel is used for storing cables, the driving device is used for driving the cable reel to rotate so as to release the cables, the portal frame is used for horizontally supporting the released cables, and the vertical turning device is used for supporting the cables to turn in the vertical direction; the traction device is connected with the tail end of the cable and used for traction of the cable, and the control module is used for enabling the speed of the driving device, the speed of the vertical turning device, the speed of the electric roller and the speed of the traction device to be adjustable and synchronously starting and stopping. The automatic laying of the cable is realized, and when the synchronous start and stop, all parts of the cable are uniformly stressed, so that the cable is prevented from being pulled apart, the cable is protected from being damaged, the laying speed of the cable can be adjusted according to actual working conditions, and the laying efficiency is improved.
Description
Technical Field
The invention relates to the technical field of cable conveying, in particular to cable conveying equipment and a cable conveying method.
Background
Along with the acceleration of urbanization process, city power consumption is also continuously rising, and in order to meet the demand of city aesthetic construction, the transmission cable adopts the mode of laying cables underground.
In the existing cable laying engineering, the following problems exist: the existing construction team mostly adopts a mode of manually controlling a tractor and a conveyor, the cable laying is difficult to start and stop synchronously, the automation degree is low, and the cable is pulled apart due to uneven stress; the cable laying equipment is a constant speed device, the laying speed cannot be adjusted according to actual working conditions, and the laying efficiency is low.
Therefore, it is desirable to provide a cable transportation apparatus and a cable transportation method to solve the problems.
Disclosure of Invention
The invention aims to provide cable conveying equipment and a cable conveying method, which can ensure that cables are laid automatically and safely, can adjust the laying speed of the cables according to actual working conditions and improve the laying efficiency.
In order to realize the purpose, the following technical scheme is provided:
a cable transportation device comprising:
a cable drum for storing cables;
the driving device is used for driving the cable reel to rotate so as to release the cable;
the portal frame is used for horizontally supporting the released cable;
the vertical turning device is used for supporting the cable to turn in the vertical direction;
a plurality of electric rollers for horizontally supporting the cable in a conveying direction of the cable;
the traction device is connected with the tail end of the cable and is used for traction the cable;
and the control module is used for enabling the driving device, the vertical turning device, the electric roller and the traction device to be started and stopped synchronously at adjustable speeds.
As an alternative of the cable conveying equipment, the gantry comprises a gantry support and a sliding frame, the sliding frame is arranged on the gantry support in a sliding mode along the vertical direction, and the cable penetrates through the sliding frame and drives the sliding frame to float up and down.
As an alternative of the cable conveying equipment, an ultrasonic sensor is arranged at the top of the gantry support, the transmitting direction of the ultrasonic sensor corresponds to that of the cable, and the ultrasonic sensor is in communication connection with the control module.
As an alternative of the cable conveying equipment, the cable conveying equipment further comprises a tension sensor, one end of the tension sensor is connected with the traction end of the traction device, and the other end of the tension sensor is connected with the cable.
As an alternative of the cable conveying equipment, a first pressure sensor is arranged on the vertical turning device, and the cable is pressed on a sensing part of the first pressure sensor.
As an alternative to the cable transportation apparatus, the cable transportation apparatus further includes the horizontal turning device for supporting the cable to turn in a horizontal direction, the horizontal turning device being electrically connected to the control module.
As an alternative of the cable conveying equipment, a second pressure sensor is arranged on the horizontal turning device, and the cable is pressed on a sensing part of the second pressure sensor.
As cable conveying equipment's alternative, cable conveying equipment still includes auxiliary pulley and liftable support, and is a plurality of the auxiliary pulley is followed the direction of delivery interval of cable sets up, electronic gyro wheel the auxiliary pulley with horizontal turning device all set up in on the liftable support, control module with the liftable support electricity is connected.
As an alternative of cable conveying equipment, the control module comprises a PC end, a master station PLC and a plurality of slave station PLCs, the PC end is in communication connection with the master station PLC, and the master station PLC is in communication connection with the slave station PLCs.
A cable conveying method adopts the technical scheme of any cable conveying equipment to convey cables, and comprises the following steps: the control module controls the driving device, the vertical turning device, the electric roller and the traction device to start and stop synchronously, and the speed is adjustable.
Compared with the prior art, the invention has the beneficial effects that:
according to the cable conveying equipment provided by the invention, the cable reel storing the cable is rotatably arranged on the driving device, the tail end of the cable sequentially passes through the portal frame, the vertical turning device and the plurality of electric rollers and then is connected with the traction device, the driving device, the vertical turning device, the electric rollers and the traction device are all electrically connected with the control module, the control module can control and adjust the speed of each device, and each device is synchronously started and stopped, so that the automatic laying of the cable is realized, on one hand, when the cable is started and stopped, each part of the cable is uniformly stressed, the cable is prevented from being torn off, and the cable is protected from being damaged; on the other hand can improve laying efficiency according to the laying speed of operating condition regulation cable.
The cable conveying method provided by the invention realizes automatic laying of cables, achieves synchronous start and stop of the driving device, the vertical turning device, the electric roller and the traction device, and can adjust the laying speed of the cables according to actual working conditions and improve the laying efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic view of a cable transport apparatus for a cable in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a gantry in an embodiment of the present invention;
fig. 3 is a schematic diagram of a network architecture of a control module according to an embodiment of the present invention.
Reference numerals:
1. a cable; 2. a cable reel; 3. a gantry; 4. a vertical turning device; 5. an electric roller; 6. an auxiliary pulley; 7. a horizontal turning device; 8. a tension sensor; 9. a traction device; 10. a drive device; 31. a carriage; 32. an ultrasonic sensor; 33. a gantry support.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. To those of ordinary skill in the art, the specific meaning of terms in the present invention can be understood in specific instances.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In order to ensure the automatic laying of the cables, the laying speed of the cables can be adjusted according to actual working conditions, and the laying efficiency is improved. The present embodiment provides a cable transportation apparatus and a cable transportation method, and details of the present embodiment are described below with reference to fig. 1 to 3.
Example one
As shown in fig. 1, the cable reel 2 is used for storing a cable 1, the cable conveying equipment is sequentially provided with a driving device 10, a portal frame 3, a vertical turning device 4, an electric roller 5, a traction device 9 and a control module along the conveying direction of the cable, the cable reel 2 is rotatably arranged on the driving device 10, the driving device 10 is used for driving the cable reel 2 to rotate so as to release the cable 1, the portal frame 3 is used for horizontally supporting the released cable 1, and the vertical turning device 4 is used for supporting the cable 1 to turn in the vertical direction. The electric rollers 5 are provided with a plurality of rollers for horizontally supporting the cable 1 in the conveying direction of the cable 1, and the traction device 9 is connected with the tail end of the cable 1 and used for drawing the cable 1 to move. The driving device 10, the vertical turning device 4, the electric roller 5 and the traction device 9 are electrically connected with the control module, and the control module is used for enabling the driving device 10, the vertical turning device 4, the electric roller 5 and the traction device 9 to be adjustable in speed and start and stop synchronously.
In short, a cable drum 2 to be laid is rotatably arranged on a driving device 10, the tail end of a cable 1 sequentially passes through a portal frame 3, a vertical turning device 4 and a plurality of electric rollers 5 and then is connected with a traction device 9, the driving device 2, the vertical turning device 4, the electric rollers 5 and the traction device 9 are all electrically connected with a control module, the control module can control and adjust the speed of each device, and each device is synchronously started and stopped to realize the automatic laying of the cable 1, on one hand, when the cable is started and stopped, all parts of the cable 1 are uniformly stressed to avoid being torn off, and the cable 1 is protected from being damaged; on the other hand can improve laying efficiency according to the laying speed of actual condition regulation cable 1.
Further, a portal frame 3 is arranged between the driving device 10 and the vertical turning device 4, the portal frame 3 comprises a portal frame 33 and a sliding frame 31, the sliding frame 31 is arranged on the portal frame 33 in a sliding mode along the vertical direction, and the cable 1 penetrates through the sliding frame 31 and drives the sliding frame 31 to float up and down. Specifically, it is determined whether the flying height of the carriage 31 is within a set height threshold range, and when the flying height is greater than the set height threshold range, the control module controls the driving device 10 to enter an acceleration mode, and/or the control module controls the traction device 9 and the electric roller 5 to enter a deceleration mode. When the floating height is smaller than the set height threshold range, the control module controls the driving device 10 to enter a deceleration mode, and/or controls the traction device 9 and the electric roller 5 to enter an acceleration mode. When the floating height is within the range of the set height threshold value, the control module controls the driving device 10, the electric roller 5 and the traction device 9 to be in a set uniform speed mode.
Further, an ultrasonic sensor 32 is arranged on the top of the gantry support 33, the emitting direction of the ultrasonic sensor 32 corresponds to the cable 1, and the ultrasonic sensor 32 is in communication connection with the control module and is used for measuring and calculating the conveying speed, the conveyed length and the floating height of the cable 1. And adjusting the distance between the cable 1 and the top ultrasonic sensor 32 on the portal frame 3 to ensure that a certain buffer distance is reserved above and below the cable 1. The rotating speed of the driving device 10, the electric roller 5 and the traction device 9 is adjusted by judging the floating height of the sliding frame 31 along with the cable 1, so that the stable and safe conveying of the cable 1 is ensured.
Further, the cable conveying equipment further comprises a tension sensor 8, one end of the tension sensor 8 is connected with the traction end of the traction device 9, and the other end of the tension sensor 8 is connected with the cable 1. Through addding tension sensor 8, guarantee the stable transport of cable 1, avoid the too big cable 1 that leads to of pulling force that cable 1 received to tear apart or the pulling force undersize leads to cable 1 to pile up. Specifically, the traction device 9 is a tractor, the tractor serves as main power equipment to pull the cable 1 to advance through a steel wire rope, the electric rollers 5 provide laying support and power transportation for the cable 1, and the driving device 10 drives the cable drum 2 to assist in paying off, so that the laying quality and the laying efficiency of the cable 1 can be effectively guaranteed, and the automation degree of laying of the cable 1 can be improved.
Specifically, whether the pulling force value detected by the pulling force sensor 8 is within a set pulling force threshold range or not is judged, and when the pulling force value is larger than the set pulling force threshold range, the control module controls the driving device 10 to enter an acceleration mode, and/or controls the traction device 9 and the electric roller 5 to enter a deceleration mode. When the pulling force value is smaller than the set pulling force threshold range, the control module controls the driving device 10 to enter a deceleration mode, and/or controls the traction device 9 and the electric roller 5 to enter an acceleration mode. When the tension detection value is in the range of the set tension threshold value, the control module controls the driving device 10, the electric roller 5 and the traction device 9 to be in the set uniform speed mode.
In the laying process of the cable 1, the key data of the lateral pressure of the turning in the vertical direction is difficult to obtain, and the laying quality of the cable 1 is not guaranteed. Furthermore, a first pressure sensor is arranged on the vertical turning device 4, and the cable 1 is pressed on a sensing part of the first pressure sensor. Specifically, when the detection value of the first pressure sensor is greater than the first set pressure value, the control module controls the driving device 10, the electric roller 5 and the traction device 9 to stop rotating at the same time, so that the safe conveying of the cable 1 is ensured.
Further, cable conveying equipment still includes auxiliary pulley 6 and liftable support, and a plurality of auxiliary pulleys 6 set up along cable 1's direction of delivery interval, and electronic gyro wheel 5, auxiliary pulley 6 and horizontal turning device 7 all set up on the liftable support, and control module is connected with the liftable support electricity. When the cable 1 is laid, the devices are first tested without errors and then arranged as shown in fig. 1. According to the underground cable trench condition, each device can be lifted by a proper height by a lifting support so as to be convenient for conveying. The waterproof rating of each device in this example was IP 54.
Further, as shown in fig. 3, the software control logic of the control module adopts a three-layer architecture, and includes a PC end, a master PLC and a plurality of slave PLCs, where the PC end exchanges transmission information with the master PLC through an ethernet, and the master PLC exchanges information with the slave PLCs through a Profinet protocol. Specifically, the uppermost layer is controlled by a PC (personal computer) end, the middle layer is controlled by a master station PLC, the lower layer is controlled by a slave station PLC, and each subsystem is connected with a nearby lower layer PLC module. Each PLC receives the instruction of the upper computer through the module and sends the instruction to each subsystem unit, and as shown in the combined drawings of fig. 1 and fig. 3, a plurality of adjacent subsystems are controlled by one PLC module, and meanwhile, if devices such as sensors exist in the area, the PLC module can acquire data through the A/D conversion module. Specifically, the ultrasonic sensor 32 records the laid length and the conveying speed of the cable 1. After the cable 1 is laid, the related information can be stored in a PC-side database for being checked.
The present embodiment also provides a cable conveying method that conveys the cable 1 using the above-mentioned cable conveying apparatus. The cable conveying method comprises the following steps: the control module controls the driving device 10, the vertical turning device 4, the electric roller 5 and the traction device 9 to start and stop synchronously, and the speed is adjustable. Specifically, a driving device 10 is arranged on the ground as a starting point, a traction device 9 is arranged at a set distance from the starting point in the ground as an end point, a vertical turning device 4 is arranged at a position where the cable 1 goes down the well, and a plurality of electric rollers 5 are arranged in the ground along the conveying direction of the cable 1. The cable conveying method provided by the invention realizes the automatic laying of the cable 1, achieves the synchronous start and stop of the driving device 10, the vertical turning device 4, the electric roller 5 and the traction device 9, and can also adjust the laying speed of the cable 1 according to the actual working condition and improve the laying efficiency.
Example two
Compared with the first embodiment, the basic structure of the cable conveying equipment provided in the first embodiment is the same as that of the first embodiment, and only the arrangement of the device for assisting in turning the cable is different, and the structure the same as that of the first embodiment is not described again in the first embodiment.
Further, in the laying process of the cable 1, the key data of the lateral pressure of the horizontal turning is difficult to obtain, and the laying quality of the cable 1 is not guaranteed. Further, as shown in fig. 1, the cable transportation apparatus further includes a horizontal turning device 7 for supporting the cable 1 to turn in the horizontal direction, and the horizontal turning device 7 is electrically connected to the control module. Specifically, the horizontal turning device 7 is arranged at a position where the underground cable 1 needs to be turned horizontally, so that the smooth turning direction of the cable 1 is ensured.
Furthermore, a second pressure sensor is arranged on the horizontal turning device 7, and the cable 1 is pressed on a sensing part of the second pressure sensor. Specifically, when the detection value of the second pressure sensor is greater than the second set pressure value, the control module controls the driving device 10, the electric roller 5 and the traction device 9 to stop rotating at the same time, and the safe conveying of the cable is ensured.
It is to be noted that the present invention is only a preferred embodiment and technical principles thereof. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A cable transportation apparatus, comprising:
a cable drum (2) for storing the cable (1);
-drive means (10) for driving the cable drum (2) in rotation to release the cable (1);
a gantry (3) for horizontally supporting the cable (1) after release;
the vertical turning device (4) is used for supporting the cable (1) to turn in the vertical direction;
a plurality of electric rollers (5), wherein the electric rollers (5) are used for horizontally supporting the cable (1) in the conveying direction of the cable (1);
the traction device (9) is connected with the tail end of the cable (1) and is used for traction of the cable (1);
and the control module is used for enabling the driving device (10), the vertical turning device (4), the electric roller (5) and the traction device (9) to be started and stopped at adjustable speed and synchronously.
2. The cable conveying equipment according to claim 1, wherein the gantry (3) comprises a gantry support (33) and a carriage (31), the carriage (31) is slidably arranged on the gantry support (33) along a vertical direction, and the cable (1) is arranged on the carriage (31) in a penetrating manner and drives the carriage (31) to float up and down.
3. The cable transportation equipment according to claim 2, wherein an ultrasonic sensor (32) is arranged on the top of the gantry support (33), the emitting direction of the ultrasonic sensor (32) corresponds to the cable (1), and the ultrasonic sensor (32) is in communication connection with the control module.
4. The cable transportation apparatus according to claim 1, further comprising a tension sensor (8), wherein one end of the tension sensor (8) is connected to a pulling end of the pulling device (9), and the other end of the tension sensor (8) is connected to the cable (1).
5. The cable transportation apparatus according to claim 1, wherein a first pressure sensor is provided on the vertical turning device (4), and the cable (1) is pressed against a sensing portion of the first pressure sensor.
6. The cable transportation apparatus according to claim 1, further comprising the horizontal turning device (7) for supporting the cable (1) to turn in a horizontal direction, the horizontal turning device (7) being electrically connected to the control module.
7. The cable transportation apparatus according to claim 6, wherein a second pressure sensor is provided on the level turning device (7), and the cable (1) is pressed against a sensing portion of the second pressure sensor.
8. The cable conveying equipment as claimed in claim 7, further comprising a plurality of auxiliary pulleys (6) and a liftable support, wherein the auxiliary pulleys (6) are arranged at intervals along the conveying direction of the cable (1), the electric roller (5), the auxiliary pulleys (6) and the horizontal turning device (7) are arranged on the liftable support, and the control module is electrically connected with the liftable support.
9. The cable transportation apparatus of claim 1, wherein the control module comprises a PC terminal, a master PLC and a plurality of slave PLCs, the PC terminal being communicatively coupled to the master PLC, the master PLC being communicatively coupled to the slave PLCs.
10. A cable conveying method for conveying a cable by using the cable conveying apparatus according to any one of claims 1 to 9, the cable conveying method comprising: the control module controls the driving device (10), the vertical turning device (4), the electric roller (5) and the traction device (9) to start and stop synchronously and is adjustable in speed.
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| CN202110541360.2A CN113104657B (en) | 2021-05-18 | 2021-05-18 | Cable conveying equipment and cable conveying method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110541360.2A CN113104657B (en) | 2021-05-18 | 2021-05-18 | Cable conveying equipment and cable conveying method |
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| CN113104657A true CN113104657A (en) | 2021-07-13 |
| CN113104657B CN113104657B (en) | 2022-11-29 |
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| CN114459655A (en) * | 2022-02-10 | 2022-05-10 | 国网上海市电力公司 | Superconducting cable steering side pressure monitoring system and paying-off control strategy |
| CN114491895A (en) * | 2022-04-01 | 2022-05-13 | 广东电网有限责任公司东莞供电局 | Cable laying stress analysis method and device |
| CN115301100A (en) * | 2022-08-11 | 2022-11-08 | 中国恩菲工程技术有限公司 | Mixing system and cable conditioning method |
| WO2023040760A1 (en) * | 2021-09-18 | 2023-03-23 | 天泽电力(江苏)有限公司 | Cable conveying system |
| CN116488066A (en) * | 2023-05-08 | 2023-07-25 | 珠海市伊特高科技有限公司 | Automatic direction-adjusting laying device for underground cable |
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