Conductor sag adjusting device of power transmission line

Abstract

The invention relates to the technical field of sag control of power transmission lines, in particular to a lead sag adjusting device of a power transmission line, which comprises a frame, the bottom of the frame is fixedly connected with a connecting plate, the connecting plate is provided with a plurality of groups of connecting holes, and the connecting plate is fixedly connected with a cross arm on an external telegraph pole through the connecting holes and bolts; a driving motor is fixedly connected to the bottom of the frame, an output shaft of the driving motor drives a driving gear to be rotationally connected with the inner top of the frame, and the driving gear is meshed with the first driving rack and the second driving rack. The driving motor drives the driving gear and the driven gear to rotate, and the positions of the two groups of first insulators are adjusted through the first driving rack and the second driving rack, so that the length of a wire in the frame is changed, and sag adjustment is realized; according to the temperature change of the external environment, sag abnormity caused by thermal expansion and cold contraction of the wire and the steel wire rope is effectively avoided, and stable operation of a power transmission line is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of sag control of power transmission lines, in particular to a conductor sag regulating device for a transmission line. Background Art

[0002] The patent with publication (announcement) number CN110148915B discloses a device for quickly adjusting the sag of a conductor, including a connecting sleeve, a movable sleeve connected to one side of the connecting sleeve, the movable sleeve embedded in the connecting sleeve and fixedly connected to the connecting sleeve, and a force-bearing handle fixedly connected to the outer surface of the connecting sleeve. The present invention is achieved by setting a No. 1 sag adjustment mechanism and a No. 2 sag adjustment mechanism.

[0003] The patent with publication (announcement) number CN112582958B discloses a device for quickly adjusting the sag of a conductor, including a support frame, a main gear is provided on the left side of the support frame, a rotating shaft is provided at the right end of the main gear, a fixed rod is provided inside the rotating shaft, a traction rope is fixedly connected to the outer surface of the fixed rod, a lifting ring is fixedly connected to the end of the traction rope away from the fixed rod, a drive assembly is provided on the side of the main gear away from the support frame, and the drive assembly includes a crank joint, a crank rod, a grip rod and an anti-slip sleeve.

[0004] In the above-mentioned prior art, the support frame is fixed on the tower, and the wire is fixedly connected to the wire fixing ring. Then, by holding the holding rod, the crank rod is driven to move in a circle with the crank joint as the center, thereby driving the main gear to rotate, and then driving the transmission wheel to rotate, thereby driving the right telescopic shaft to rotate. Because the card block of the right telescopic shaft is inserted into the card slot of the left telescopic shaft, the left telescopic shaft can rotate with the right telescopic shaft, and then the wire can be wound around the right telescopic shaft to adjust the sag of the wire. In addition, the wire needs to be adjusted by manual operation in this equipment, and the adjustment device is often placed on the electric pole at a high altitude, which is not conducive to the construction of construction workers.

[0005] Therefore, a conductor sag adjusting device for a transmission line is proposed to solve the above-mentioned problems. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention provides a conductor sag adjustment device for a transmission line. The device drives a driving motor to rotate a driving gear and a driven gear, and adjusts the positions of two groups of first insulators through the first and second driving racks, thereby changing the length of the conductor in the frame to achieve sag adjustment. At the same time, the driven gear drives the driven rack to adjust the tightness of the wire rope according to the changes in the external ambient temperature, effectively avoiding abnormal sag of the conductor and wire rope due to thermal expansion and contraction, thereby ensuring the stable operation of the transmission line.

[0007] To achieve the above object, the present invention provides the following technical solutions: A conductor sag adjustment device for a power transmission line includes a frame, a connecting plate fixedly connected to the bottom of the frame, the connecting plate having multiple groups of connecting holes, the connecting plate fixedly connected to a crossarm on an external utility pole via the connecting holes and bolts; a drive motor fixedly connected to the bottom of the frame, the output shaft of the drive motor driving a drive gear rotatably connected to the top of the frame, the drive gear meshing with a first drive rack and a second drive rack, the first drive rack and the second drive rack being slidably connected to the top of the frame, the ends of the first drive rack and the second drive rack being rotatably connected to a first insulator, and the front and rear ends of the top of the frame being fixedly connected to a second insulator; The first insulators and the second insulators are used for external wires to cross and pass through in a wavy line in sequence; the two groups of the first insulators move towards each other to adjust the length of the wires in the frame; The top of the frame is rotatably connected to a driven gear, and the driven gear is fixedly connected to the center of the driving gear.

[0008] Preferably, the driven gear engages to drive the driven rack to be slidably connected to the top of the frame, the side walls of the driven rack are fixedly connected to two groups of steel ropes, and the two groups of steel ropes are slidably connected to the first driving groove in the mating component.

[0009] Preferably, the mating component includes a drive frame, which is slidingly connected to two groups of steel ropes through a first drive groove. A servo motor is bolted inside the drive frame, and the output shaft of the servo motor drives a drive wheel to rotate in one end of a group of first drive grooves, and the drive wheel is in contact with the steel rope.

[0010] Preferably, a second driving groove is provided at the top of the driving frame, a driving rod is rotatably connected in the second driving groove, a driving shaft is fixedly connected at the center of the driving wheel, an electromagnetic ring is fixedly connected to the upper end of the driving shaft, the electromagnetic ring is rotatably connected to one end of the driving rod, the driving rod is rotatably connected to one end of the driven rod, and the driven rod is rotatably connected to a driving plate slidably arranged in the accommodating frame; the accommodating frame is fixedly connected in the second driving groove.

[0011] Preferably, a distance sensor is fixedly connected to the bottom of the driving frame.

[0012] Preferably, a multi-stage telescopic rod is fixedly connected to the bottom of the driving frame, and a sleeve is rotatably connected to the bottom of the telescopic rod at the outermost end of the multi-stage telescopic rod.

[0013] Preferably, a driving impeller is rotatably connected in the sleeve, and the driving impeller is fixedly connected to the center of the matching gear.

[0014] Preferably, the mating gear is engaged with the ring gear, the ring gear is rotatably connected to the sleeve, and a camera and an infrared thermal imager are fixedly connected to the side wall of the ring gear.

[0015] Preferably, the inner side wall of the sleeve is recessed inward to form a receiving groove, and the receiving groove is entirely wrapped and closed by an elastic rubber membrane, and the elastic rubber membrane is fixedly connected to the side wall of the receiving groove.

[0016] Preferably, the air outlet end of the accommodating frame passes through the center of the driving frame and the multi-stage telescopic rod through a folded conveying pipe and enters the rotating space of the driving impeller and the sleeve through the top of the sleeve, and then enters the receiving groove, so that the volume in the receiving groove increases, and the elastic rubber membrane expands and squeezes into contact with the surface of the wire.

[0017] Compared with the prior art, the present invention provides a conductor sag adjustment device for a transmission line, which has the following beneficial effects: 1. This invention utilizes a driving motor to drive the driving gear and the driven gear to rotate, and adjusts the positions of the two groups of first insulators through the first and second driving racks, thereby changing the length of the conductor in the frame to achieve sag adjustment; at the same time, the driven gear drives the driven rack to adjust the tightness of the wire rope, and effectively avoids abnormal sag of the conductor and wire rope due to thermal expansion and contraction according to changes in the external ambient temperature, thereby ensuring stable operation of the transmission line.

[0018] 2. This invention uses a servo motor in a matching component to drive the drive wheel to rotate, causing the drive frame to move. The distance sensor then moves and detects the conductor below. By measuring the distance to the conductor, the sag of the conductor can be accurately measured, providing data support for the operation monitoring of the transmission line.

[0019] 3. This invention controls the electromagnetic ring to be energized during the movement of the drive frame, thereby driving the drive impeller in the sleeve to rotate, and then driving the ring gear to rotate, so that the camera and infrared thermal imager rotate back and forth around the wire, realizing all-round shooting sampling and infrared thermal imaging monitoring of the wire, and timely discovering abnormal conditions on the wire surface, such as damage, overheating, etc.

[0020] 4. When the driving frame of the invention moves, the air in the frame reciprocates and enters the sleeve, causing the elastic rubber membrane in the receiving groove to expand and contract back and forth, squeezing and contacting the surface of the conductor, making it convenient to squeeze, crush and scrape off the ice on the surface of the conductor, effectively preventing accidents such as increased weight, increased sag and even wire breakage caused by ice accumulation in the conductor, and ensuring the safe operation of the transmission line in severe weather.

[0021] 5. The sleeve of this invention adapts to the curvature of the conductor by expanding and contracting the multi-stage telescopic rod, ensuring that the detection and maintenance device can always maintain good contact with the conductor during the conductor sag adjustment and movement process, thereby improving the adaptability and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A bottom view of the present invention; Figure 3 This is a schematic diagram of the top structure within the framework of the present invention; Figure 4 It is a schematic diagram of the structure of the matching components of the present invention; Figure 5 This is a schematic diagram of the drive slot structure of the present invention; Figure 6 is a cross-sectional view of a mating component of the present invention; Figure 7 A bottom view of the mating assembly of the present invention; Figure 8 It is a schematic diagram of the sleeve structure of the present invention.

[0023] In the figure: 1. frame; 2. connecting plate; 3. driving motor; 31. driving gear; 32. first driving rack; 33. second driving rack; 34. first insulator; 35. second insulator; 36. driven gear; 37. driven rack; 38. wire rope; 39. matching component; 391. driving frame; 392. first driving slot; 393. servo motor; 394. driving wheel; 395. second driving slot; 396. driving rod; 397. driven rod; 398. accommodating frame; 399. driving plate; 3910. distance sensor; 3911. multi-stage telescopic rod; 3912. sleeve; 3913. driving impeller; 3914. matching gear; 3915. gear ring; 3916. receiving slot; 3917. elastic rubber membrane. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 - Figure 8The conductor sag adjustment device for a power transmission line in this embodiment includes a frame 1, a connecting plate 2 is fixedly connected to the bottom of the frame 1, and a plurality of connecting holes are provided on the connecting plate 2. The connecting plate 2 is fixedly connected to a cross arm on an external utility pole through the connecting holes and bolts; a battery pack and a controller are provided in each of the frame 1 and the driving frame 391, and solar panels are provided on the surface of the frame 1 and the driving frame 391. The solar panels are used to charge the battery pack. A 5G communication module is electrically connected to the controller, and the 5G communication module is used to control and transmit data to electrical components; the controller realizes precise control and data transmission of electrical components through the 5G communication module, ensuring that the sag adjustment operation is accurate and timely, and improving the adjustment efficiency and accuracy.

[0026] Further, such as Figures 1-8 As shown, a drive motor 3 is fixedly connected to the bottom of the frame 1. The drive motor 3 adopts a worm gear reduction motor, which makes the drive motor 3 have a self-locking effect. The output shaft of the drive motor 3 drives the drive gear 31 to be rotatably connected to the top of the frame 1. The drive gear 31 is engaged with the first drive rack 32 and the second drive rack 33. The first drive rack 32 and the second drive rack 33 are slidably connected to the top of the frame 1. The ends of the first drive rack 32 and the second drive rack 33 are rotatably connected to the first insulator 34. The front and rear ends of the top of the frame 1 are fixedly connected to the second insulator 35. The surface of the first insulator 34 and the second insulator 35 is provided with a rubber layer to improve the contact effect with the wire and reduce the wear on the wire surface. The first insulators 34 and the second insulators 35 are used for external wires to cross in a wavy line in sequence; the two groups of first insulators 34 move towards each other to adjust the length of the wires in the frame 1, and thereby adjust the sag of the wires; The top of the frame 1 is rotatably connected to a driven gear 36, which is fixedly connected to the center of the driving gear 31, and the driving gear 31 can drive the driven gear 36 to rotate; the driven gear 36 engages and drives the driven rack 37 to slide in connection with the top of the frame 1, so that the driving gear 31 can drive the driven rack 37 to move while rotating, and the bottom of the driven rack 37 slides and inserts into the top of the frame 1 to prevent the driven rack 37 from leaving the top area of ​​the frame 1, and the side walls of the driven rack 37 are fixedly connected to two groups of steel ropes 38, and the two groups of steel ropes 38 are slidably connected to the first driving groove 392 in the mating component 39, and the steel wire rope 38 provides a slide rail for the mating component 39, which facilitates the movement of the mating component 39 on the steel wire rope 38 to detect the wire; the wire is set in the middle area of ​​the two groups of steel wire ropes 38, and the distance sensor 3910 is set in the middle area of ​​the two groups of first driving grooves 392, which facilitates the distance sensor 3910 to detect the wire below.

[0027] Among them, when adjusting the sag of the conductor, the drive motor 3 is controlled to rotate, and the drive motor 3 drives the drive gear 31 and the driven gear 36 to rotate, and the driven gear 36 drives the driven rack 37 to move, so that the driven rack 37 adjusts the tightness between the wire ropes 38; the drive gear 31 moves toward each other through the first drive rack 32 and the second drive rack 33, and the first drive rack 32 and the second drive rack 33 drive the two groups of first insulators 34 to move, so that the two groups of first insulators 34 push the conductor to move, so that the length of the conductor in the frame 1 increases or decreases, and the sag of the conductor and the wire rope 38 between the two groups of poles can be adjusted according to the temperature of the external environment to avoid the conductor and the wire rope 38 being affected by thermal expansion and contraction.

[0028] Further, if Figures 1-8 As shown, the mating assembly 39 includes a drive frame 391, which is slidably connected to the two sets of steel cables 38 through a first drive slot 392. A servo motor 393 is bolted to the drive frame 391. The output shaft of the servo motor 393 drives a drive wheel 394 to rotate in one end of a set of first drive slots 392, and the drive wheel 394 contacts the steel cables 38. A second driving groove 395 is provided at the top of the driving frame 391, and a driving rod 396 is rotatably connected in the second driving groove 395. A driving shaft is fixedly connected at the center of the driving wheel 394, and an electromagnetic ring is fixedly connected to the upper end of the driving shaft. The electromagnetic ring is rotatably connected to one end of the driving rod 396, and the driving rod 396 is rotatably connected to one end of the driven rod 397. The driven rod 397 is rotatably connected to a driving plate 399 slidingly arranged in the accommodating frame 398; the accommodating frame 398 is fixedly connected in the second driving groove 395; the driving plate 399 is used to push the air in the accommodating frame 398 to be transported outward or to draw back the air in the receiving groove 3916. A distance sensor 3910 is fixedly connected to the bottom of the driving frame 391.

[0029] Among them, the servo motor 393 is controlled to drive the driving wheel 394 to rotate, and the driving wheel 394 drives the driving frame 391 to move by contacting the wire rope 38. The driving frame 391 is controlled to drive the distance sensor 3910 to move, so that the distance sensor 3910 detects the wire below. The distance between the distance sensor 3910 and the wire is detected, and the sag of the wire can be measured.

[0030] Finally, if Figures 1-8As shown, a multi-stage telescopic rod 3911 is fixedly connected to the bottom of the driving frame 391. The bottom of the telescopic rod at the outermost end of the multi-stage telescopic rod 3911 is rotatably connected to a sleeve 3912. A driving impeller 3913 is rotatably connected within the sleeve 3912. The driving impeller 3913 fits in the space inside the sleeve 3912. The driving impeller 3913 is fixedly connected to the center of a matching gear 3914. The matching gear 3914 meshes with a ring gear 3915. The ring gear 3915 is rotatably connected to the sleeve 3912. A camera and an infrared thermal imager are fixedly connected to the side wall of the ring gear 3915. The inner sidewall of the sleeve 3912 is recessed inward to form a receiving groove 3916. The receiving groove 3916 is entirely wrapped and sealed by an elastic rubber membrane 3917. The elastic rubber membrane 3917 is fixedly connected to the sidewall of the receiving groove 3916. The air outlet end of the accommodating frame 398 passes through the center of the driving frame 391 and the multi-stage telescopic rod 3911 through a folded conveying pipe and enters the rotating space of the driving impeller 3913 and the sleeve 3912 through the top of the sleeve 3912, and then enters the receiving groove 3916, so that the volume inside the receiving groove 3916 increases, and the elastic rubber membrane 3917 expands and comes into contact with the outer surface of the wire; the multi-stage telescopic rod 3911 is composed of multiple groups of telescopic rods that are slidably connected to each other, so that the multi-stage telescopic rod 3911 can be expanded or contracted.

[0031] The driving frame 391 can control the electromagnetic ring to be energized while moving, so that the electromagnetic ring attracts the driving rod 396, and the driving wheel 394 drives the driven rod 397 to rotate through the driving rod 396. The driven rod 397 drives the air in the accommodating frame 398 to reciprocate into the sleeve 3912 through the driving plate 399. The air drives the driving impeller 3913 in the sleeve 3912 to rotate, and the driving impeller 3913 drives the matching gear 3914 to rotate. The matching gear 3914 engages and drives the ring gear 3915 to rotate. The ring gear 3915 drives the camera and the infrared thermal imager to rotate back and forth around the wire, so that the camera can take pictures and samples of the wire in all directions. Then, the air enters the receiving groove 3916, causing the elastic rubber membrane 3917 to expand and contract back and forth, thereby facilitating the squeezing, crushing and scraping of ice on the surface of the wire. When the driving frame 391 moves, the sleeve 3912 adapts to the curvature of the wire by expanding and contracting the multi-stage telescopic rod 3911.

[0032] like Figures 1-8 As shown, the principle of the conductor sag adjustment device for a transmission line provided in this embodiment is as follows: When installing the wire cables, connect the connecting plate 2 to the external electric pole, then pass the wire in a wavy shape through the first insulator 34 and the second insulator 35 in turn, and then slide one end of the wire through the sleeve 3912 and slide outward to another group of electric poles for installation, and the wire rope 38 is fixedly connected to the driven rack 37 on the other group of electric poles.

[0033] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical connection methods. Any connection method can be implemented as long as it can achieve its beneficial effects, so the specific structural composition and working principle will not be described in detail in this embodiment.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A conductor sag regulating device for a power transmission line, comprising a frame (1), wherein a connecting plate (2) is fixedly connected to the bottom of the frame (1), wherein a plurality of connecting holes are provided on the connecting plate (2), and wherein the connecting plate (2) is fixedly connected to a cross arm on an external electric pole via the connecting holes and bolts; Its characteristics are: The bottom of the frame (1) is fixedly connected to a driving motor (3), the output shaft of the driving motor (3) drives a driving gear (31) to be rotatably connected to the top of the frame (1), the driving gear (31) is meshed with a first driving rack (32) and a second driving rack (33), the first driving rack (32) and the second driving rack (33) are slidably connected to the top of the frame (1), the ends of the first driving rack (32) and the second driving rack (33) are rotatably connected to a first insulator (34), and the front and rear ends of the top of the frame (1) are fixedly connected to a second insulator (35); The first insulators (34) and the second insulators (35) are used for external wires to cross and pass through in a wavy line in sequence; the two groups of the first insulators (34) move toward each other to adjust the length of the wires in the frame (1); The top of the frame (1) is rotatably connected to a driven gear (36), and the driven gear (36) is fixedly connected to the center of the driving gear (31).

2. The conductor sag adjusting device for a power transmission line according to claim 1, characterized in that: The driven gear (36) is engaged to drive the driven rack (37) to be slidably connected to the top of the frame (1); the side wall of the driven rack (37) is fixedly connected to two groups of steel wire ropes (38); and the two groups of steel wire ropes (38) are slidably connected to the first driving groove (392) in the mating component (39).

3. The conductor sag adjusting device for a power transmission line according to claim 2, characterized in that: The mating assembly (39) includes a drive frame (391), the drive frame (391) is slidably connected to the two sets of steel ropes (38) through the first drive slot (392), a servo motor (393) is bolted inside the drive frame (391), and the output shaft of the servo motor (393) drives a drive wheel (394) to be rotatably connected to one end of a set of first drive slots (392), and the drive wheel (394) is in contact with the steel ropes (38).

4. The conductor sag adjusting device for a power transmission line according to claim 3, characterized in that: A second driving groove (395) is provided at the top of the driving frame (391), and a driving rod (396) is rotatably connected in the second driving groove (395). A driving shaft is fixedly connected at the center of the driving wheel (394), and an electromagnetic ring is fixedly connected to the upper end of the driving shaft. The electromagnetic ring is rotatably connected to one end of the driving rod (396). The driving rod (396) is rotatably connected to one end of the driven rod (397), and the driven rod (397) is rotatably connected to a driving plate (399) slidably set in the accommodating frame (398); the accommodating frame (398) is fixedly connected in the second driving groove (395).

5. The conductor sag adjusting device for a power transmission line according to claim 4, characterized in that: A distance sensor (3910) is fixedly connected to the bottom of the driving frame (391).

6. The conductor sag adjusting device for a power transmission line according to claim 5, characterized in that: The bottom of the driving frame (391) is fixedly connected to a multi-stage telescopic rod (3911), and the bottom of the telescopic rod at the outermost end of the multi-stage telescopic rod (3911) is rotatably connected to a sleeve (3912).

7. The conductor sag adjusting device for a power transmission line according to claim 6, characterized in that: A driving impeller (3913) is rotatably connected within the sleeve (3912), and the driving impeller (3913) is fixedly connected to the center of a matching gear (3914).

8. The conductor sag adjusting device for a power transmission line according to claim 7, characterized in that: The mating gear (3914) is meshed with the ring gear (3915), the ring gear (3915) is rotatably connected to the sleeve (3912), and a camera and an infrared thermal imager are fixedly connected to the side wall of the ring gear (3915).

9. The conductor sag adjusting device for a power transmission line according to claim 8, characterized in that: The inner side wall of the sleeve (3912) is recessed inward to form a receiving groove (3916). The receiving groove (3916) is entirely wrapped and sealed by an elastic rubber membrane (3917). The elastic rubber membrane (3917) is fixedly connected to the side wall of the receiving groove (3916).

10. The conductor sag adjusting device for a power transmission line according to claim 9, characterized in that: The air outlet end of the accommodating frame (398) passes through the center of the driving frame (391) and the multi-stage telescopic rod (3911) through a folded delivery pipe and enters the rotation space of the driving impeller (3913) and the sleeve (3912) through the top of the sleeve (3912), and then enters the receiving groove (3916), so that the volume in the receiving groove (3916) increases and the elastic rubber membrane (3917) expands and contacts with the outer surface of the wire.

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