Overhead power transmission line cable hanging adjustable device and overhead power transmission line system

Abstract

The present application provides an overhead transmission line cable hanging adjustable device and an overhead transmission line system, which relate to the field of power transmission technology. The overhead transmission line cable hanging adjustable device includes a base frame, a hanging plate, an angle adjustment mechanism and a transverse adjustment mechanism. Among them, the base frame is used to connect with a utility pole, a power tower, etc. The hanging plate is used to fix the cable, and the hanging plate is connected to the angle adjustment mechanism. The angle adjustment mechanism is connected to the base frame through the transverse adjustment mechanism. In this way, by operating the angle adjustment mechanism, the hanging plate can be driven to rotate relative to the base frame, and the angle of the hanging plate can be adjusted, thereby adjusting the angle of the cable. At the same time, by operating the transverse adjustment mechanism, the angle adjustment mechanism and the hanging plate can be driven to move laterally relative to the base frame, thereby adjusting the distance between adjacent hanging plates, and then adjusting the tension of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission, and in particular to an adjustable cable hanging device for an overhead power transmission line and an overhead power transmission line system. Background Art

[0002] In recent years, with the rapid economic and social development, the continuous expansion of urban construction, and the improvement of road, rail, and pipeline networks, various large-scale construction machinery and equipment have been widely used within power facility protection zones. During cable assembly, the cables are positioned between adjacent transmission racks. The cable tension is determined after assembly, and subsequent tension adjustment is impossible during use. This results in poor adaptability to the environment and poses safety risks. Summary of the Invention

[0003] The purpose of the present invention is to provide an overhead transmission line cable hanging adjustable device and an overhead transmission line system, which can adjust the cable tension and angle during the assembly process or in subsequent use, has strong adaptability, can adapt to different environments, and has high safety.

[0004] The embodiment of the present invention is achieved as follows:

[0005] In a first aspect, the present invention provides an adjustable device for hanging cables for overhead power transmission lines, comprising:

[0006] Base frame, used for connection to transmission towers or utility poles;

[0007] a mounting plate for connecting cables;

[0008] An angle adjustment mechanism connected to the mounting plate, the angle adjustment mechanism being used to adjust the angle of the mounting plate;

[0009] and a transverse adjustment mechanism connected to the base frame and the angle adjustment mechanism, wherein the transverse adjustment mechanism is used to adjust the transverse position of the hanging plate to adjust the tightness of the cable.

[0010] In an optional embodiment, the angle adjustment mechanism includes a connecting plate and a plurality of adjustment rods that are movably connected to the connecting plate, the plurality of adjustment rods are arranged vertically, each of the adjustment rods is connected to the hanging plate, and each of the adjustment rods can move relative to the connecting plate to drive the hanging plate closer to or away from the connecting plate.

[0011] In an optional embodiment, the adjusting rod is slidably connected to the connecting plate in the transverse direction, and the adjusting rod is rotatably connected to the hanging plate to adapt to the angle change of the hanging plate.

[0012] In an optional embodiment, a plurality of threaded holes are provided on the connecting plate, and the plurality of adjusting rods are respectively screwed into the plurality of threaded holes in a one-to-one correspondence.

[0013] In an optional embodiment, the hanging plate includes a main plate and a plurality of hanging rings, the plurality of hanging rings are connected to the main plate and arranged at intervals, and each of the hanging rings is provided with a positioning hole; the adjusting rod passes through the positioning hole and abuts against the hanging plate, and the adjusting rod and the hole wall of the positioning hole are spaced apart so that the hanging ring can swing relative to the adjusting rod; the adjusting rod is provided with a limit block located in the area surrounded by the hanging ring, and the limit block abuts against the inner wall of the hanging ring.

[0014] In an optional embodiment, a fixing hole is provided on the adjusting rod, and the limiting block is passed through the fixing hole and the two are interference fit.

[0015] In an optional embodiment, the lateral adjustment mechanism includes a connecting screw and a connecting nut, the connecting nut is threadedly connected to the connecting screw, the connecting nut is rotatably connected to the base frame, and the connecting nut and the base frame are relatively fixed in the axial direction of the connecting screw; the connecting screw is fixedly connected to the connecting plate.

[0016] In an optional embodiment, the lateral adjustment mechanism further includes a motor, which is disposed on the base frame and is transmission-connected to the connecting nut for driving the connecting nut to rotate.

[0017] In an optional embodiment, the lateral adjustment mechanism further includes a thread force sensor, which is used to obtain the thread force of the connecting nut and the connecting screw, so that when the thread force is greater than a first threshold, the motor drives the connecting nut to rotate and tighten the cable; and when the thread force is less than a second threshold, the motor drives the connecting nut to reverse and loosen the cable.

[0018] In a second aspect, the present invention provides an overhead power transmission line system, comprising:

[0019] An adjustable overhead transmission line cable hanging device according to any one of the aforementioned embodiments.

[0020] The beneficial effects of the embodiments of the present invention are:

[0021] In summary, the adjustable cable mounting device for overhead transmission lines provided in this embodiment, during construction, is constructed by securing a base frame to a support structure such as a transmission tower or utility pole. The ends of the cable are then secured to two adjacent mounting plates. The mounting plates can then be adjusted as needed. Specifically, the angle adjustment mechanism is operated to swing the mounting plates within the longitudinal plane, thereby adjusting the angle between the mounting plates and the horizontal plane, thereby adjusting the angle of the cable. The lateral distance can then be adjusted. The lateral adjustment mechanism is used to move the mounting plates relative to the base frame, moving them closer to or further away from the base frame. When the mounting plates are closer to the base frame, the cable is tightened, reducing its curvature and gradually becoming more linear, increasing its distance from the ground. When the mounting plates are farther away from the base frame, the distance between the two adjacent mounting plates decreases, loosening the cable, increasing its curvature, and decreasing its distance from the ground. This allows the angle and tension of the cable to be adjusted as needed during cable mounting, providing flexible and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 The figure is a structural diagram of an adjustable cable hanging device for overhead transmission lines according to an embodiment of the present invention.

[0024] icon:

[0025] 001-cable; 100-base frame; 200-mounting plate; 210-main body plate; 220-hanging ring; 300-angle adjustment mechanism; 310-connecting plate; 320-adjusting rod; 330-limiting block; 400-lateral adjustment mechanism; 410-connecting screw; 420-connecting nut; 430-motor; 440-thread force sensor. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0031] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] At present, when a transmission line is erected, both ends of the cable 001 are placed on two rows of hanging plates 200, and the hanging plates are fixed on supports such as electric poles or electric towers. When the cable 001 is fixed, the length of the cable 001 between the two hanging plates 200 is determined, that is, the tension of the cable 001 is determined. When the external ambient temperature rises, the cable 001 will expand due to the heat, thereby becoming longer, that is, the distance between adjacent hanging plates 200 becomes longer, and the cable 001 is prone to shaking under the action of wind, so it is easy to malfunction. In addition, when the ambient temperature is low, the cable 001 will shrink when it is cold, and the cable 001 will become shorter, which is easy to break the overhead transmission line hardware. That is, the existing cable 001 splicing structure has the problem that the tension of the cable 001 cannot be adaptively adjusted, and the safety is low.

[0033] In view of this, the designer provides an overhead transmission line cable 001 hanging adjustable device, which can adaptively adjust the tension according to demand, so as to adapt to different environments, with strong adaptability, high flexibility and high safety.

[0034] Please combine Figure 1 In this embodiment, the adjustable mounting device for an overhead transmission line cable 001 includes a base frame 100, a mounting plate 200, an angle adjustment mechanism 300, and a transverse adjustment mechanism 400. The base frame 100 is used to connect to a utility pole, a power tower, or the like. The mounting plate 200 is used to secure the cable 001. The mounting plate 200 is connected to the angle adjustment mechanism 300, which is connected to the base frame 100 via the transverse adjustment mechanism 400. Thus, by operating the angle adjustment mechanism 300, the mounting plate 200 can be driven to rotate relative to the base frame 100, thereby adjusting the angle of the mounting plate 200 and, consequently, the angle of the cable 001. Simultaneously, by operating the transverse adjustment mechanism 400, the angle adjustment mechanism 300 and the mounting plate 200 can be driven to move laterally relative to the base frame 100, thereby adjusting the distance between adjacent mounting plates 200 and, consequently, adjusting the tension of the cable 001.

[0035] The working principle of the adjustable device for hanging the overhead transmission line cable 001 provided in this embodiment is as follows:

[0036] During construction, the base frame 100 is fixed to a support such as a transmission tower or a utility pole, and then the two ends of the cable 001 are respectively fixed to two adjacent mounting plates 200. At this time, the mounting plates 200 can be adjusted as needed. Specifically, the angle adjustment mechanism 300 is operated to swing the mounting plate 200 in the longitudinal plane, thereby adjusting the angle between the mounting plate 200 and the horizontal plane, thereby adjusting the angle of the cable 001. Then, the lateral distance can be adjusted. At this time, the lateral adjustment mechanism 400 is used to drive the mounting plate 200 to move relative to the base frame 100, so that it moves closer to or further away from the base frame 100. When the mounting plate 200 approaches the base frame 100, the cable 001 is tightened, the degree of curvature of the cable 001 is reduced, and the cable 001 gradually approaches a straight line, increasing the distance from the ground. When the mounting plate 200 moves away from the base frame 100, the distance between two adjacent mounting plates 200 decreases, the cable 001 is relaxed, the bending degree of the cable 001 increases, and the distance between the cable 001 and the ground decreases. In this way, the angle and tightness of the cable 001 can be adjusted as needed when the cable 001 is mounted, which is flexible and convenient to use.

[0037] That is to say, when the external ambient temperature rises, the cable 001 expands and becomes longer. At this time, the lateral adjustment mechanism 400 can drive the hanging plates 200 to move away from each other, thereby stretching the cable 001, reducing the swing amplitude of the cable 001, and improving safety; at the same time, when the external ambient temperature drops, the cable 001 contracts. At this time, the lateral adjustment mechanism 400 drives the hanging plates 200 to move closer to each other, so that the cable 001 relaxes, and the cable 001 is not easy to pull off the overhead transmission line hardware.

[0038] In this embodiment, optionally, the base frame 100 includes two basic poles, which are arranged in parallel and spaced apart. Both basic poles are fixedly connected to a utility pole or other supporting objects, and the two basic poles are arranged up and down.

[0039] It should be noted that the basic rod can be set as a cylindrical rod, that is, the cross-sectional profile of the basic rod is circular, and a bearing is connected to the outer surface of each basic rod.

[0040] In this embodiment, optionally, the lateral adjustment mechanism 400 includes two connecting screws 410 and two connecting nuts 420, one connecting screw 410 is paired with one connecting nut 420, and the two connecting screws 410 correspond to the two base rods respectively, and the two connecting nuts 420 correspond to the two base rods respectively. Each base rod is fixedly connected to a connecting nut 420 via a bearing, that is, the connecting nut 420 is sleeved on the outside of the bearing and is rotatably connected to the base rod via the bearing. The connecting nut 420 is threadedly connected to the corresponding connecting screw 410, that is, the connecting screw 410 is inserted into the threaded hole of the connecting nut 420, and the connecting screw 410 is coaxially spaced apart from the corresponding base rod. By rotating the connecting nut 420, the corresponding connecting screw 410 can be driven to move closer to or away from the base rod along its axial direction, thereby achieving lateral movement. Both connecting screws 410 are connected to the angle adjustment mechanism 300, thereby driving the hanging plate 200 to move laterally through the angle adjustment mechanism 300.

[0041] Furthermore, the lateral adjustment mechanism 400 also includes a motor 430 and a thread force sensor 440. The thread force sensor 440 can also be called a thread preload force sensor, etc., which can obtain the bonding force or thread force between the connecting screw 410 and the connecting nut 420. It adopts the principle of strain gauge and is assembled between the connecting screw 410 and the connecting nut 420. It should be understood that the thread force sensor 440 is an existing well-known structure. In order to avoid repeated description, its principle and assembly method are not specifically described in this embodiment. The motor 430 is fixed to the base rod, and the output shaft of the motor 430 is connected to the connecting nut 420 in a transmission manner. For example, the output shaft of the motor 430 can be directly coaxially arranged with the connecting nut 420, and when the output shaft rotates, it directly drives the connecting nut 420 to rotate. Alternatively, the output shaft can be connected to the connecting nut 420 through a structure such as a gear. In addition, the thread force sensor 440 is connected to the controller of the motor 430 in a communication manner. When the thread force detected by thread force sensor 440 exceeds a first threshold, a signal is transmitted to the controller of motor 430, which activates and drives connecting nut 420 to rotate in a first circumferential direction, thereby tightening cable 001. When the thread force is less than a second threshold, the signal is transmitted to the controller of motor 430, which activates and drives connecting nut 420 to rotate in a second circumferential direction, thereby loosening cable 001. The first circumferential direction and the second circumferential direction are opposite.

[0042] By providing the motor 430 and the thread force sensor 440, automatic control is achieved, which reduces the difficulty of control, makes the control more timely, and reduces the accident rate.

[0043] In this embodiment, it should be noted that a motor 430 is provided on each base rod, and correspondingly, a thread force sensor 440 is provided between each pair of connecting screws 410 and connecting nuts 420 to improve safety.

[0044] In this embodiment, optionally, the angle adjustment mechanism 300 includes a connecting plate 310 and a plurality of adjustment rods 320 that are movably connected to the connecting plate 310. The plurality of adjustment rods 320 are arranged vertically, and each adjustment rod 320 is connected to the hanging plate 200. Each adjustment rod 320 can move relative to the connecting plate 310 to drive the hanging plate 200 closer to or away from the connecting plate 310.

[0045] Optionally, the adjustment rod 320 is configured as a threaded rod, threadedly connected to the connecting plate 310, and capable of sliding laterally relative to the connecting plate 310 upon rotation. The adjustment rod 320 is also rotatably connected to the mounting plate 200 to accommodate changes in the mounting plate 200's angle. Specifically, the connecting plate 310 is provided with three vertically arranged threaded holes, correspondingly provided with three adjustment rods 320, each of which is threadedly engaged in one of the three threaded holes. When the adjustment rods 320 are positioned at different positions within the threaded holes, the three adjustment rods 320 cooperate to adjust the tilt angle of the mounting plate 200.

[0046] Optionally, the mounting plate 200 includes a main plate 210 and three hanging rings 220. The three hanging rings 220 are connected to the main plate 210 and arranged at intervals. Each hanging ring 220 is provided with a positioning hole. The positioning hole on each hanging ring 220 is paired with a threaded hole. That is, the adjustment rod 320 is screwed into the threaded hole and then passed through the corresponding positioning hole. The end of the adjustment rod 320 away from the connecting plate 310 abuts the mounting plate 200. At the same time, there is a gap between the adjustment rod 320 and the hole wall of the positioning hole so that the hanging ring 220 can swing relative to the adjustment rod 320, providing space for adjusting the angle of the mounting plate 200. Furthermore, the adjustment rod 320 is provided with a limit block 330 located within the area surrounded by the hanging ring 220. The limit block 330 abuts the inner wall of the hanging ring 220. With such a design, when the adjusting rod 320 moves away from the connecting plate 310, the end of the adjusting rod 320 can push the hanging plate 200 away from the connecting plate 310. At the same time, when the adjusting rod 320 moves closer to the connecting plate 310, the limiting block 330 can pull the hanging plate 200 closer to the connecting plate 310, thereby realizing the adjustment of the angle of the hanging plate 200.

[0047] Optionally, the adjustment rod 320 is provided with a fixing hole, and the stopper 330 is inserted into the fixing hole with an interference fit. Alternatively, the fixing hole can be a threaded hole, and the stopper 330 is screwed into the threaded hole with both ends extending out of the fixing hole. The outer dimensions of the stopper 330 are larger than the aperture of the positioning hole on the hanging ring 220, so that it will not fall out of the hanging ring 220.

[0048] The adjustable device for hanging the overhead transmission line cable 001 provided in this embodiment is designed to, during use, when the external environment heats up, causing the cable 001 to expand and lengthen, the cable 001 will experience a large swing amplitude, increasing the tension of the cable 001. This external force is reflected between the connecting nut 420 and the connecting screw 410 and is obtained by the thread force sensor 440. The thread force sensor 440 transmits this information to the controller of the motor 430, which controls the rotation of the connecting nut 420 to tighten the cable 001, reduce swinging, and improve safety. At the same time, when the external environment cools down, causing the cable 001 to shrink and shorten, the thread force sensor 440 transmits this information to the controller of the motor 430, which controls the reverse rotation of the connecting nut 420, causing the cable 001 to relax and making it less likely to break the overhead line hardware, thereby improving safety. In this way, automated adjustment can be achieved, with high safety.

[0049] This embodiment also provides an overhead power transmission line system, including an adjustable hanging device for the overhead power transmission line cable 001, which can adjust the tightness of the cable 001 as needed and has high safety.

[0050] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An adjustable device for hanging cables for overhead power transmission lines, characterized in that: include: A base frame (100) is used for connection with a transmission tower or a power pole; A mounting plate (200) for connecting a cable (001); an angle adjustment mechanism (300) connected to the connecting plate (200), the angle adjustment mechanism (300) being used to adjust the angle of the connecting plate (200); and a transverse adjustment mechanism (400) connected to both the base frame (100) and the angle adjustment mechanism (300), wherein the transverse adjustment mechanism (400) is used to adjust the transverse position of the hanging plate (200) to adjust the tightness of the cable (001); The angle adjustment mechanism (300) includes a connecting plate (310) and a plurality of adjustment rods (320) movably connected to the connecting plate (310), wherein the plurality of adjustment rods (320) are arranged vertically, and each of the adjustment rods (320) is connected to the hanging plate (200), and each of the adjustment rods (320) can move relative to the connecting plate (310) to drive the hanging plate (200) to move closer to or away from the connecting plate (310); The adjusting rod (320) is slidably connected to the connecting plate (310) in the transverse direction, and the adjusting rod (320) is rotatably connected to the hanging plate (200) to adapt to the angle change of the hanging plate (200); The hanging plate (200) comprises a main plate (210) and a plurality of hanging rings (220), wherein the plurality of hanging rings (220) are connected to the main plate (210) and arranged at intervals, and each of the hanging rings (220) is provided with a positioning hole; the adjusting rod (320) passes through the positioning hole and abuts against the hanging plate (200), and a spacing is provided between the adjusting rod (320) and the hole wall of the positioning hole so that the hanging ring (220) can swing relative to the adjusting rod (320); the adjusting rod (320) is provided with a limiting block (330) located in an area surrounded by the hanging rings (220), and the limiting block (330) abuts against the inner wall of the hanging ring (220).

2. The adjustable overhead transmission line cable hanging device according to claim 1, characterized in that: The connecting plate (310) is provided with a plurality of threaded holes, and the plurality of adjusting rods (320) are respectively screwed into the plurality of threaded holes in a one-to-one correspondence.

3. The adjustable cable hanging device for overhead power transmission lines according to claim 2, characterized in that: The adjusting rod (320) is provided with a fixing hole, and the limiting block (330) is inserted into the fixing hole, and the two are interference-fitted.

4. The adjustable overhead transmission line cable hanging device according to claim 1, characterized in that: The lateral adjustment mechanism (400) includes a connecting screw (410) and a connecting nut (420), wherein the connecting nut (420) is threadedly connected to the connecting screw (410), the connecting nut (420) is rotatably connected to the base frame (100), and the connecting nut (420) and the base frame (100) are relatively fixed in the axial direction of the connecting screw (410); the connecting screw (410) is fixedly connected to the connecting plate (310).

5. The adjustable overhead transmission line cable hanging device according to claim 4, characterized in that: The lateral adjustment mechanism (400) further includes a motor (430), wherein the motor (430) is disposed on the base frame (100), and the motor (430) is in transmission connection with the connecting nut (420) for driving the connecting nut (420) to rotate.

6. The adjustable cable hanging device for overhead power transmission lines according to claim 5, characterized in that: The lateral adjustment mechanism (400) further includes a thread force sensor (440), which is used to obtain the thread force of the connecting nut (420) and the connecting screw (410), so as to enable the motor (430) to drive the connecting nut (420) to rotate when the thread force is greater than a first threshold value, thereby tightening the cable (001); and to enable the motor (430) to drive the connecting nut (420) to reverse when the thread force is less than a second threshold value, thereby loosening the cable (001).

7. An overhead power transmission line system, characterized in that: include: An adjustable overhead transmission line cable hanging device according to any one of claims 1 to 6.

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