A replacement device for the strain insulator string of a transmission line

Abstract

The present invention discloses a replacement device for tension insulator strings of transmission lines. The present invention relates to the technical field of power line maintenance. When replacing a tension insulator string, due to the high smoothness of the cable surface, relying only on the friction between the clamping member and the cable surface, it cannot be fixed when the tension is large, and slippage is likely to occur. For this replacement device for tension insulator strings of transmission lines, through the spherical grooves and convex patterns of the arc pressing plates, which cooperate with the spherical blocks and arc end blocks respectively, the cable is deformed and bent during the clamping process. During the pulling process, the separation spaces on the upper and lower sides are restricted. When slipping from the central position, the contact surface with the clamping member is increased. At the same time, the tortuous path causes the cable to be subject to greater resistance compared to a straight path, preventing the cable from slipping due to the smooth surface of the cable when the cable is tightened, resulting in the cable falling and increasing the difficulty of replacing the tension insulator string.

Description

Technical Field

[0001] The present invention relates to the technical field of power line maintenance, and particularly to a replacement device for a tension insulator string of a transmission line. Background Art

[0002] At present, the insulator string replacement device is a professional device used to replace the insulator string in the power system. In power facilities such as high-voltage transmission lines and substations, the insulator string plays a crucial role. It is used to support and fix the wire, and at the same time plays an insulating role to prevent current leakage to support structures such as poles. However, the insulator string is long-term exposed to the outdoor environment and will be affected by various factors. After a long time, problems such as decreased insulation performance, damage, and aging may occur, affecting the safe and stable operation of the power system. The insulator string replacement device is to be able to efficiently and safely replace the faulty or poorly performing insulator string to ensure the normal progress of power transmission;

[0003] When clamping and tightening one end of the tension insulator string connected to the transmission cable to replace the tension insulator string, due to the high smoothness of the cable surface, relying only on the friction between the clamping member and the cable surface, it cannot be fixed when the tension is large, and it is easy to slip off. Summary of the Invention

[0004] To achieve the above object, the present invention is realized through the following technical solutions: A replacement device for a tension insulator string of a transmission line, comprising:

[0005] A frame, one side of the bottom of the frame is fixedly installed with a U-shaped plate, and the frame is fixedly connected with a fixing mechanism through the U-shaped plate, and the fixing mechanism is used to fix the device to the electric pole;

[0006] A lead screw mechanism, which is used to pull the transmission cable to move, and the lead screw mechanism is installed on the top of the frame;

[0007] A clamping mechanism, which is used to clamp and fix one end of the cable connected to the tension insulator string, and the clamping mechanism is installed inside the lead screw mechanism;

[0008] The clamping mechanism includes two rotating blocks, and the rotating blocks are symmetrically installed inside the screw mechanism along the center position of the axis of the screw mechanism, and the ends of the two rotating blocks away from the screw mechanism are respectively rotatably installed with arc clamping plates and arc pressure plates, and the opposing surfaces of the arc pressure plate and the arc clamping plate are both concave arc surfaces. Through the concave arc surfaces of the opposing surfaces of the arc pressure plate and the arc clamping plate, the upper and lower sides of the cable are pressurized in the process of clamping each other, so that the cable is in the center position between the arc pressure plate and the arc clamping plate. At the same time, after clamping, the upper and lower sides of the cable are restricted, so that the cable cannot be separated from the clamping position from the upper and lower sides, thereby avoiding the inclination of the tensioning direction of the cable, resulting in the cable It is tilted to disengage from the clamping position, and a ball groove is provided at the center of the concave arc surface of the arc pressure plate, and convex patterns are provided at both ends of the concave arc surface of the arc pressure plate. The ball groove and the convex patterns of the arc pressure plate cooperate with the ball block and the arc end block respectively, so that the cable is deformed and tortuous during the clamping process. During the pulling process, the disengagement space on the upper and lower sides is limited. When it slips from the center position, the contact area with the clamping part is increased. At the same time, the tortuous path makes the cable subject to greater resistance than the straight path, so as to prevent the cable from slipping due to the smooth surface of the cable when the cable is tightened, causing the cable to fall, thereby increasing the difficulty of replacing the tension insulator string, and both sides of the arc pressure plate are inclined.

[0009] Preferably, a slot plate is fixedly installed at the center position of the arc clamp plate and the bottom of the arc pressure plate, an empty slot is opened at the center position of the slot plate, the slot plates are connected by bolts, a ball block is fixedly installed at the center position of the inner concave arc surface of the arc clamp plate, arc end blocks are fixedly installed on both sides of the inner concave arc surface of the arc clamp plate, the arc end block does not contact the inclined surface of the arc pressure plate, and the arc end block cooperates with the inclined surface of the arc pressure plate. During the clamping process, the cables on both sides of the arc pressure plate are bent while the cables on both sides of the arc pressure plate are close to the inclined surface, so that an inclined clamping force appears between the arc end block and the inclined surface of the arc pressure plate, and the clamping force between the arc clamp plate and the arc pressure plate is cooperated to increase the resistance when the cable slips off and improve the clamping effect. The ball block corresponds to the ball groove of the arc pressure plate.

[0010] Preferably, the fixing mechanism includes a chute frame. A connecting plate is fixedly installed on one side of the chute frame close to the U-shaped plate. The chute frame is fixedly connected to the outside of the U-shaped plate through the connecting plate. On the side of the chute frame away from the connecting plate, chutes are symmetrically opened. Sliders are slidably installed at the chute positions of the chute frame. The chute frame is slidably connected to an arc-shaped clamping ring through the sliders. Arc-shaped protrusions are evenly arranged on the opposite surfaces of the arc-shaped clamping ring. The arc-shaped clamping rings are connected by bolts. A conical panel is fixedly installed at the bottom of the outside of the chute frame. Both sides of the conical panel are conical surfaces. Strip grooves are symmetrically opened on the outside of the conical panel. A backing plate is slidably installed at the strip groove positions of the conical panel. By rotating the screw rod to adjust the height of the backing plate, when the tensioned cable is tightened and the tension on the strain insulator string is transferred to the device, the backing plate is matched with the arc-shaped clamping ring to apply the tension on the surface of the pole. After the arc-shaped clamping ring is clamped, by moving the backing plate up and down, the backing plate is closely attached to the surface of the pole, reducing the swaying amplitude of the device when the cable is tightened, ensuring the safety of personnel, and at the same time reducing the docking difficulty between the strain insulator string and the cable. The top of the outside of the conical panel is threadedly connected to a screw rod through a fastener. The bottom end of the screw rod is rotatably connected to the inner wall of the backing plate, and a hexagonal block is fixedly connected to the top of the screw rod.

[0011] Preferably, the lead screw mechanism includes a support frame and end plates. The support frames are symmetrically installed on the top of the frame. The end plates are symmetrically installed on the inner wall of the frame. Sleeve blocks are fixedly installed on the tops of the support frames. A lead screw is rotatably installed between the sleeve blocks. A turning handle is fixedly installed at one end of the lead screw. Rod holes are symmetrically opened on the outside of the end plates. A grooved rod is rotatably installed between the end plates through the rod holes. Grooves are evenly opened on the outside of the grooved rod. When there is a component force of the cable tension in the inclined direction, through the cooperation of the grooved rod and the sleeve ring, and through the sleeve rings on both sides of the rotating groove plate for cooperation, the rotating groove plate is restricted to prevent the inclination between the rotating groove plate and the lead screw from causing rotation obstruction. At the same time, when the sleeve ring slides, the stains adhering to the surface of the grooved rod are scraped off, so that the stains fall off or enter the grooves of the grooved rod, reducing the resistance during sliding. A rotating groove plate is slidably installed on the outside of the grooved rod. A threaded hole is opened at the top of the outside of the rotating groove plate. The rotating groove plate is threadedly connected to the outside of the lead screw through the threaded hole. One end of a rotating block is rotatably connected to the inner wall of the rotating groove plate, and the rotating blocks are symmetrically installed along the axis center position of the rotating groove plate. Fixing plates are fixedly installed at the bottoms of both sides of the rotating groove plate. Side plates are fixedly installed at both ends of the fixing plates. The fixing plates are fixedly connected to sleeve rings through the side plates. The inner wall of the sleeve ring is slidably adapted to the outside of the grooved rod, and the inner wall of the sleeve ring is a conical surface with a protruding center position.

[0012] The present invention provides a replacement device for a strain insulator string of a transmission line. It has the following beneficial effects:

[0013] 1. The tension insulator string replacement device for the transmission line, through the spherical groove and convex pattern of the arc pressing plate, respectively cooperate with the spherical block and the arc end block, so that the cable deforms and bends during the clamping process. During the pulling process, the separation space on the upper and lower sides is restricted. When slipping from the central position, the contact surface with the clamping member is increased. At the same time, the tortuous path makes the cable encounter greater resistance compared to the straight path, preventing the cable from slipping due to the smooth surface of the cable when the cable is tightened, resulting in the cable dropping and increasing the difficulty of replacing the tension insulator string.

[0014] 2. The tension insulator string replacement device for the transmission line, through the concave arc surface on the opposite surfaces of the arc pressing plate and the arc clamping plate, pressurizes the upper and lower sides of the cable during the process of approaching and clamping each other, making the cable in the central position between the arc pressing plate and the arc clamping plate. At the same time, after clamping, the upper and lower sides of the cable are restricted, making the cable unable to separate from the clamping position from the upper and lower sides, avoiding the inclination of the tightening direction of the cable and causing the cable to tilt and separate from the clamping position at the clamping position.

[0015] 3. The tension insulator string replacement device for the transmission line, through the cooperation of the inclined surface of the arc end block and the arc pressing plate, during the clamping process, while bending the cables on both sides of the arc pressing plate, makes the cables on both sides of the arc pressing plate closely adhere to the inclined surface, resulting in an inclined clamping force between the inclined surface of the arc end block and the arc pressing plate. Cooperating with the clamping force between the arc clamping plate and the arc pressing plate, it increases the resistance when the cable slips and improves the clamping effect.

[0016] 4. The tension insulator string replacement device for the transmission line, adjusts the height of the backing plate by rotating the screw rod to tighten the cable. After the pulling force of the cable on the tension insulator string is transferred to the device, the backing plate cooperates with the arc clamping ring to apply the pulling force on the surface of the pole. After the arc clamping ring is tightened, by moving the backing plate up and down, the backing plate closely adheres to the surface of the pole, reducing the shaking amplitude of the device when tightening the cable, ensuring the safety of personnel and reducing the docking difficulty between the tension insulator string and the cable.

[0017] 5. The tension insulator string replacement device for the transmission line, through the cooperation of the groove rod and the collar, when there is a component force of the cable tension in the inclined direction, the collar on both sides of the rotating groove plate is used for cooperation to restrict the rotating groove plate, avoiding the rotation obstruction caused by the inclination between the rotating groove plate and the lead screw. At the same time, during the sliding process of the collar, the stains adhering to the surface of the groove rod are scraped off, making the stains fall off or enter the groove of the groove rod, reducing the resistance during sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the external structure schematic diagram of a tension insulator string replacement device for a transmission line according to the present invention;

[0019] Figure 2 is the side view of the structure of a tension insulator string replacement device for a transmission line according to the present invention;

[0020] Figure 3 Structural schematic diagram of the fixing mechanism of the present invention;

[0021] Figure 4 Side view of a partial structure of the fixing mechanism of the present invention;

[0022] Figure 5 Structural schematic diagram of the lead screw mechanism of the present invention;

[0023] Figure 6 Partial structural schematic diagram of the lead screw mechanism of the present invention;

[0024] Figure 7 Side view of a partial structure of the lead screw mechanism of the present invention;

[0025] Figure 8 Structural schematic diagram of the clamping mechanism of the present invention;

[0026] Figure 9 Side view of the structure of the clamping mechanism of the present invention.

[0027] In the figure: 1, frame; 2, lead screw mechanism; 3, clamping mechanism; 4, fixing mechanism; 5, U-shaped plate; 201, support frame; 202, sleeve block; 203, lead screw; 204, rotating groove plate; 205, rotating handle; 206, end plate; 207, groove rod; 208, fixing plate; 209, sleeve ring; 210, side plate; 31, rotating block; 32, arc-shaped clamping plate; 33, arc-shaped end block; 34, ball block; 35, groove plate; 36, arc-shaped pressing plate; 37, ball groove; 41, sliding groove frame; 42, conical panel; 43, backing plate; 44, arc-shaped clamping ring; 45, connecting plate; 46, screw; 47, slider; 48, hexagonal block. Specific embodiments

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0029] The first embodiment is as shown in Figures 1 to 2 and Figures 8 to 9 shown. The present invention provides a technical solution: a replacement device for a strain insulator string of a transmission line, comprising:

[0030] A frame 1, one side of the bottom of the frame 1 is fixedly installed with a U-shaped plate 5, and the frame 1 is fixedly connected with a fixing mechanism 4 through the U-shaped plate 5. The fixing mechanism 4 is used to fix the device to the electric pole;

[0031] A screw mechanism 2, which is used to pull the power transmission cable to move, and the screw mechanism 2 is installed on the top of the frame 1;

[0032] A clamping mechanism 3, which is used to clamp and fix one end of the cable connected to the tension insulator string, and the clamping mechanism 3 is installed inside the screw mechanism 2;

[0033] The clamping mechanism 3 includes two rotating blocks 31, which are symmetrically installed inside the screw mechanism 2 along the center position of the axis of the screw mechanism 2, and the arc clamping plate 32 and the arc pressure plate 36 are respectively rotatably installed at the ends of the two rotating blocks 31 away from the screw mechanism 2. The opposite surfaces of the arc pressure plate 36 and the arc clamping plate 32 are both concave arc surfaces. During the contact process, the ball block 34 at the center position of the arc clamping plate 32 presses the cable toward the ball groove 37 at the center position of the arc pressure plate 36, causing the cable to bend and deform. At the same time, the arcs on both sides of the arc clamping plate 32 The end block 33 clamps and bends the cables on both sides of the arc pressure plate 36 so that the cables on both sides are bent and tightly adhere to the convex patterns of the arc pressure plate 36, thereby increasing the friction between the cables and the arc pressure plate 36. At the same time, in the process of approaching each other, the cables are squeezed toward the center position through the concave arc surfaces of the arc pressure plate 36 and the arc clamping plate 32 on the opposite sides, thereby preventing the cables from being separated from the clamping position during the pulling process. A ball groove 37 is provided at the center position of the concave arc surface of the arc pressure plate 36, and convex patterns are provided at both ends of the concave arc surface of the arc pressure plate 36, and both sides of the arc pressure plate 36 are inclined surfaces.

[0034] A slot plate 35 is fixedly installed at the center position of the bottom of the arc clamp plate 32 and the arc pressure plate 36. An empty slot is opened at the center position of the slot plate 35. The slot plates 35 are connected by bolts. A ball block 34 is fixedly installed at the center position of the concave arc surface of the arc clamp plate 32. Arc end blocks 33 are fixedly installed on both sides of the concave arc surface of the arc clamp plate 32. The arc end block 33 does not contact the inclined surface of the arc pressure plate 36. When the cable is clamped at one end of the tension insulator string connected by the clamping mechanism 3, the cable is placed between the arc pressure plate 36 and the arc clamp plate 32, and then the bolts between the slot plates 35 are rotated with a wrench, so that the slot plate 35 drives the arc clamp plate 32 and the arc pressure plate 36 to approach each other under the restriction of the rotating block 31, so as to clamp the cable, and the ball block 34 corresponds to the ball groove 37 of the arc pressure plate 36.

[0035] The second embodiment is based on the first embodiment. Figures 3 to 4As shown in the figure, the fixing mechanism 4 includes a chute frame 41. A connecting plate 45 is fixedly installed on one side of the chute frame 41 close to the U-shaped plate 5. The chute frame 41 is fixedly connected to the outside of the U-shaped plate 5 through the connecting plate 45. Chutes are symmetrically opened on the side of the chute frame 41 away from the connecting plate 45. Workers turn the bolt between the arc clamping rings 44 with a wrench, so that the arc clamping rings 44 slide along the chutes of the chute frame 41 and approach each other under the restriction of the sliders 47, and contact the outside of the electric pole through the arc-shaped protrusions on the opposite surfaces of the arc clamping rings 44, so that the arc clamping rings 44 clamp the outside of the electric pole. Sliders 47 are slidably installed at the chutes of the chute frame 41. The chute frame 41 is slidably connected to the arc clamping rings 44 through the sliders 47. Arc-shaped protrusions are evenly arranged on the opposite surfaces of the arc clamping rings 44, and the arc clamping rings 44 are connected by bolts. A tapered panel 42 is fixedly installed at the bottom outside the chute frame 41. Both sides of the tapered panel 42 are tapered surfaces, and grooves are symmetrically opened on the outside of the tapered panel 42. A backing plate 43 is slidably installed at the grooves of the tapered panel 42. The top outside the tapered panel 42 is threadedly connected to a screw rod 46 through a fastener. Subsequently, the worker turns the hexagonal block 48 with a wrench, so that the hexagonal block 48 drives the screw rod 46 to rotate. Utilizing the threaded connection between the screw rod 46 and the tapered panel 42, the backing plate 43 is driven to move upward, so that the backing plate 43 closely adheres to the outside of the electric pole. When replacing the strain insulator string and the acting force of the cable acts on the device, through the contact between the backing plate 43 and the electric pole, and in cooperation with the arc clamping rings 44 to provide support. The bottom end of the screw rod 46 is rotatably connected to the inner wall of the backing plate 43, and the top of the screw rod 46 is fixedly connected to the hexagonal block 48.

[0036] Third Embodiment. On the basis of Embodiments 1 and 2, please refer to Figures 5 to 7 As shown in the figure, the lead screw mechanism 2 includes a support frame 201 and end plates 206. The support frames 201 are symmetrically installed on the top of the frame 1, and the end plates 206 are symmetrically installed on the inner wall of the frame 1. Sleeve blocks 202 are fixedly installed on the tops of the support frames 201. A lead screw 203 is rotatably installed between the sleeve blocks 202. A turning handle 205 is fixedly installed at one end of the lead screw 203. Rod holes are symmetrically opened on the outside of the end plates 206. By the worker turning the turning handle 205, the lead screw 203 rotates, so that the turning groove plate 204, under the restriction of the groove rod 207, cooperates with the threaded connection of the lead screw 203, so that the turning groove plate 204 can drive the clamping mechanism 3 to move along the axial direction of the groove rod 207. When the clamping mechanism 3 clamps the cable and drives the cable to move simultaneously, the groove rod 207 is rotatably installed between the end plates 206 through the rod holes. Grooves are evenly opened on the outside of the groove rod 207, and a turning groove plate 204 is slidably installed on the outside of the groove rod 207. A threaded hole is opened at the top outside the turning groove plate 204, and the turning groove plate 204 is threadedly connected to the outside of the lead screw 203 through the threaded hole.

[0037] The inner wall of the rotating groove plate 204 is rotatably connected to one end of the rotating block 31, and the rotating blocks 31 are symmetrically installed along the central axis position of the rotating groove plate 204. Fixed plates 208 are fixedly installed at the bottoms on both sides of the rotating groove plate 204. Side plates 210 are fixedly installed at both ends of the fixed plate 208. The fixed plate 208 is fixedly connected with a collar 209 through the side plates 210. When transferring the tension of the cable from the strain insulator string, the tension of the cable is transmitted to the rotating groove plate 204 through the clamping mechanism 3. When there is an inclination angle between the acting force of the cable and the axis of the groove rod 207, the inclined component force is transmitted to the fixed plate 208 and the side plate 210 through the rotating groove plate 204, increasing the acting force between the collar 209 and the groove rod 207. Through the mutual cooperation between the collars 209 on both sides, the inclined component force received by the rotating groove plate 204 is restricted. At the same time, the tapered surface on the inner wall of the collar 209 is used to contact the groove rod 207, reducing the contact surface with the collar 209. When the surface of the groove rod 207 has adhered stains during the sliding process, the collar 209 scrapes it, causing it to fall off or enter the groove, avoiding sliding blockage. The inner wall of the collar 209 is slidably adapted to the outside of the groove rod 207, and the inner wall of the collar 209 is a tapered surface with a central position bulge.

[0038] During use, the construction worker fixes the device to the top of the electric pole through the fixing mechanism 4, and then rotates the screw rod mechanism 2 to drive the clamping mechanism 3 to move, adjusting the position of the clamping mechanism 3 so that the clamping mechanism 3 reaches the fixed position at the connection end of the power transmission cable and the strain insulator string. And the worker manually uses a wrench to adjust the clamping mechanism 3 to clamp the cable. After the cable is fixed to the clamping mechanism 3, the screw rod mechanism 2 drives the clamping mechanism 3 and the cable, gradually transferring all the acting force of the cable on the strain insulator string to the clamping mechanism 3, so that the strain insulator string is no longer affected by the acting force of the cable. Subsequently, the required strain insulator string to be replaced is disassembled, and the new strain insulator string is fixed to the cable. And the screw rod mechanism 2 drives the clamping mechanism 3 and the cable to move slightly, gradually transferring the cable acting force to the replaced strain insulator string.

[0039] When fixing the device to the top of the electric pole through the fixing mechanism 4, the worker rotates the bolt between the arc clamping rings 44 with a wrench, so that the arc clamping rings 44 slide and approach each other along the chute of the chute frame 41 under the restriction of the sliders 47, and the arc-shaped protrusions on the opposite surfaces of the arc clamping rings 44 contact the outside of the electric pole, clamping the outside of the electric pole with the arc clamping rings 44. Subsequently, the worker uses a wrench to rotate the hexagonal block 48, so that the hexagonal block 48 drives the screw rod 46 to rotate. Utilizing the threaded connection between the screw rod 46 and the tapered panel 42, the backing plate 43 is driven to move upward, making the backing plate 43 closely adhere to the outside of the electric pole. When replacing the strain insulator string and the acting force of the cable acts on the device, through the contact between the backing plate 43 and the electric pole, it cooperates with the arc clamping rings 44 to provide support.

[0040] When the clamping mechanism 3 is moved by the screw mechanism 2, the worker turns the handle 205 to rotate the screw 203, so that the slot plate 204 is limited by the slot rod 207 and cooperates with the threaded connection of the screw 203, so that the slot plate 204 can drive the clamping mechanism 3 to move along the axial direction of the slot rod 207. When the clamping mechanism 3 clamps the cable and drives the cable to move at the same time, the tension of the cable is transferred from the tension insulator string. The tension of the cable is transmitted to the slot plate 204 through the clamping mechanism 3. When there is an inclination angle between the force of the cable and the axis of the slot rod 207, the inclination The component of force is transmitted to the fixed plate 208 and the side plate 210 through the groove plate 204, thereby increasing the acting force between the collar 209 and the groove rod 207. The collars 209 on both sides cooperate with each other to limit the inclined component of force on the groove plate 204. At the same time, the conical surface of the inner wall of the collar 209 is used to contact the groove rod 207 to reduce the contact surface with the collar 209 and cooperate with the groove of the groove rod 207. When there is adhered stain on the surface of the groove rod 207 during the sliding process, the collar 209 scrapes it off to make it fall or enter the groove to avoid sliding obstruction.

[0041] When clamping one end of the cable connected to the tension insulator string by the clamping mechanism 3, the cable is placed between the arc pressure plate 36 and the arc clamp plate 32, and then the bolts between the slot plates 35 are turned with a wrench, so that the slot plates 35 drive the arc clamp plate 32 and the arc pressure plate 36 to approach each other under the restriction of the rotating block 31, and the cable is clamped. During the contact process, the ball block 34 at the center position of the arc clamp plate 32 presses the cable toward the ball groove 37 at the center position of the arc pressure plate 36, causing the cable to bend and deform. At the same time, the arc end blocks 33 on both sides of the arc clamp plate 32 clamp and bend the cables on both sides of the arc pressure plate 36, so that the cables on both sides are bent and tightly adhere to the convex grooves of the arc pressure plate 36, thereby increasing the friction between the cable and the arc pressure plate 36. At the same time, in the process of approaching each other, the cable is squeezed toward the center position through the concave arc surface on the opposite side of the arc pressure plate 36 and the arc clamp plate 32, so as to prevent the cable from being out of the clamping position during the pulling process.

[0042] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A transmission line tension insulator string replacement device, characterized in that: include: A frame (1), a U-shaped plate (5) being fixedly mounted on one side of the bottom of the frame (1), the frame (1) being fixedly connected to a fixing mechanism (4) via the U-shaped plate (5), the fixing mechanism (4) being used to fix the device to the electric pole; A screw mechanism (2), the screw mechanism (2) being used to pull the power transmission cable to move, and the screw mechanism (2) being mounted on the top of the frame (1); A clamping mechanism (3), the clamping mechanism (3) being used to clamp and fix one end of a cable connected to a tension insulator string, and the clamping mechanism (3) being installed inside the screw mechanism (2); The clamping mechanism (3) comprises a rotating block (31), wherein the rotating blocks (31) are two in number and are symmetrically mounted inside the screw mechanism (2) along the central position of the axis of the screw mechanism (2), and an arc clamping plate (32) and an arc pressure plate (36) are respectively rotatably mounted on one end of the two rotating blocks (31) away from the screw mechanism (2), the opposing surfaces of the arc pressure plate (36) and the arc clamping plate (32) are both concave arc surfaces, and a ball groove (37) is provided at the central position of the concave arc surface of the arc pressure plate (36), convex patterns are provided at both ends of the concave arc surface of the arc pressure plate (36), and both sides of the arc pressure plate (36) are inclined surfaces; A slot plate (35) is fixedly mounted at the center of the bottom of the arc clamping plate (32) and the arc pressure plate (36), an empty slot is opened at the center of the slot plate (35), the slot plates (35) are connected by bolts, and a ball block (34) is fixedly mounted at the center of the concave arc surface of the arc clamping plate (32); Arc end blocks (33) are fixedly mounted on both sides of the inner concave arc surface of the arc clamping plate (32); the arc end blocks (33) do not contact the inclined surface of the arc pressure plate (36); and the ball block (34) corresponds to the ball groove (37) of the arc pressure plate (36).

2. A transmission line tension insulator string replacement device according to claim 1, characterized in that: The fixing mechanism (4) comprises a slide groove frame (41), a connecting plate (45) being fixedly mounted on a side of the slide groove frame (41) close to the U-shaped plate (5), the slide groove frame (41) being fixedly connected to the outer side of the U-shaped plate (5) via the connecting plate (45), and slide grooves are symmetrically provided on a side of the slide groove frame (41) away from the connecting plate (45).

3. A transmission line tension insulator string replacement device according to claim 2, characterized in that: The slide grooves of the slide groove frame (41) are all slidably mounted with sliders (47), the slide groove frame (41) is slidably connected to an arc clamping ring (44) via the slider (47), the opposite surfaces of the arc clamping ring (44) are evenly provided with arc-shaped protrusions, and the arc clamping rings (44) are connected by bolts.

4. A transmission line tension insulator string replacement device according to claim 3, characterized in that: A conical panel (42) is fixedly mounted on the bottom of the outer side of the slide slot frame (41), both sides of the conical panel (42) are conical surfaces, and grooves are symmetrically opened on the outer side of the conical panel (42), a pad (43) is slidably mounted on the groove of the conical panel (42), a screw rod (46) is threadedly connected to the top of the outer side of the conical panel (42) through a fastener, the bottom end of the screw rod (46) is rotatably connected to the inner wall of the pad (43), and a hexagonal block (48) is fixedly connected to the top of the screw rod (46).

5. A transmission line tension insulator string replacement device according to claim 4, characterized in that: The screw mechanism (2) comprises a support frame (201) and an end plate (206); the support frame (201) is symmetrically mounted on the top of the frame (1); the end plate (206) is symmetrically mounted on the inner wall of the frame (1); a sleeve block (202) is fixedly mounted on the top of each of the support frames (201); a screw (203) is rotatably mounted between the sleeve blocks (202); and a turning handle (205) is fixedly mounted on one end of the screw (203).

6. A transmission line tension insulator string replacement device according to claim 5, characterized in that: Rod holes are symmetrically provided on the outer sides of the end plates (206), slot rods (207) are rotatably mounted between the end plates (206) through the rod holes, grooves are evenly provided on the outer sides of the slot rods (207), and a slot-turning plate (204) is slidably mounted on the outer sides of the slot rods (207), a thread hole is provided on the top of the outer side of the slot-turning plate (204), and the slot-turning plate (204) is threadedly connected to the outer side of the screw rod (203) through the thread hole.

7. A transmission line tension insulator string replacement device according to claim 6, characterized in that: The inner wall of the trough plate (204) is rotatably connected to one end of a rotating block (31), and the rotating block (31) is symmetrically installed along the center position of the axis of the trough plate (204). Fixed plates (208) are fixedly installed at the bottom of both sides of the trough plate (204).

8. A transmission line tension insulator string replacement device according to claim 7, characterized in that: Side plates (210) are fixedly mounted on both ends of the fixing plate (208), and the fixing plate (208) is fixedly connected to a collar (209) via the side plates (210). The inner wall of the collar (209) is slidably fitted with the outer side of the groove rod (207), and the inner wall of the collar (209) is a conical surface with a protrusion at the center.

Images