Extra-high voltage double-plate type thermal expansion sleeve strain clamp

Abstract

The application discloses a special high-voltage double-plate type thermal expansion sleeve strain clamp, which comprises an aluminum pipe body, a steel anchor for fixing a conductor is arranged in the aluminum pipe body, a fixing ring is arranged at the end of the steel anchor, a connecting barrel is fixedly arranged on the steel anchor, a connecting sleeve is sleeved on the aluminum pipe body, a drainage plate is fixedly connected to the bottom of the connecting sleeve, a connecting assembly is arranged in the drainage plate, a drainage wire clamp is fixedly connected to the drainage plate through the connecting assembly, a limiting ring is fixedly connected to the bottom end of the drainage wire clamp, a positioning plate is arranged in a sliding groove, and a guide mechanism for guiding and limiting the positioning plate is arranged in the sliding groove. The special high-voltage double-plate type thermal expansion sleeve strain clamp is convenient for multi-branch power supply through cooperation of the positioning plate and the sliding groove, flexibility is improved, reliability and risk resistance are improved, power supply requirements of complex scenes such as power distribution areas and multi-user branch lines can be met, main line fixing and multi-branch drainage connection can be completed at one time, the special high-voltage double-plate type thermal expansion sleeve strain clamp occupies small space and can optimize line layout.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power transmission and distribution, in particular to a double-plate type thermal expansion sleeve strain clamp for extra-high voltage. BACKGROUND

[0002] In a power transmission and distribution system, a strain clamp is a key fitting for fixing a conductor and bearing the tension of the conductor, which is mainly installed at the strain section, corner tower, terminal tower and other positions of a power transmission line, connects the conductor and strain insulator string or tower cross arm, and simultaneously bears the dual functions of mechanical fixation and electrical current diversion. It is a key component for ensuring the stability of the line structure and current transmission, can firmly fix the conductor, bear the full tension of the conductor, prevent the conductor from loosening and falling off due to tension, ensure the geometric stability of the line under extreme working conditions, and avoid large swinging or breaking of the conductor.

[0003] A strain clamp is disclosed in Chinese Patent Publication No. CN117477470A, which includes an aluminum pipe and a steel anchor. The aluminum pipe includes a crimping section, which is configured with a mounting channel through the crimping section along its axis. The crimping section includes a steel anchor crimping section. The steel anchor is configured with a crimping protrusion, and a portion of the steel anchor can be inserted into the mounting channel and correspond to the steel anchor crimping section. A first positioning line is provided on the outer periphery of the steel anchor crimping section, and the first positioning line is located in the region corresponding to the crimping protrusion. The first positioning line is used for positioning the crimping equipment. In this way, on the one hand, the worker does not need to draw a line when crimping the steel anchor and the aluminum pipe, thereby improving the work efficiency. On the other hand, the accuracy of the crimping position can be guaranteed, thereby effectively solving the problem of missed crimping, ensuring the mechanical bearing capacity of the steel anchor and the aluminum pipe after crimping, and improving the crimping quality.

[0004] The existing strain clamp is mainly designed based on the traditional single-loop power transmission demand, generally adopts a single-path current diversion and anchoring structure, does not reserve the interface for multiple branch conductors, and lacks a shunt structure design suitable for parallel power supply. It is difficult to directly realize the synchronous anchoring and current distribution of multiple branch conductors, which results in a design shortcoming that greatly reduces the adaptability of the strain clamp in scenarios such as grid optimization, distributed power supply access, and emergency power supply switching. Not only does it need to additionally install switching fittings and shunt equipment, but also increases the number of line joints and fault hidden points, ultimately restricting the flexibility and operation convenience of the power transmission system. Therefore, it is necessary to develop a new double-plate type thermal expansion sleeve strain clamp to solve the above problems. SUMMARY

[0005] The present application aims to provide a double-plate type thermal expansion sleeve strain clamp for extra-high voltage to solve the problems raised in the background.

[0006] The utility model provides a kind of extra-high voltage double-plate type thermal expansion sleeve strain clamp, including aluminium pipe body, the steel anchor for being fixed to wire is arranged inside the aluminium pipe body, the steel anchor end is provided with fixed ring, connecting barrel is fixedly arranged on the steel anchor, connecting sleeve is sleeved on the aluminium pipe body, the connecting sleeve bottom is fixedly connected with drainage plate, the drainage plate is provided with connecting assembly inside, the drainage plate is fixedly connected with drainage wire clamp by connecting assembly, the drainage wire clamp bottom end is fixedly connected with limit ring, the drainage wire clamp is fixedly connected with sliding slot, positioning plate is penetrated in the sliding slot, the sliding slot is provided with guiding mechanism for guiding and limiting the positioning plate, the sliding slot is provided with positioning mechanism for the position of the positioning plate, the positioning plate center position is provided with the cylinder for fixed wire, the positioning plate is symmetrically provided with frame inside, and the frame is located on the side of cylinder, the frame is provided with limiting mechanism for wire fixed inside the cylinder, the sliding slot is provided with monitoring mechanism for wire position monitoring inside the drainage wire clamp.

[0007] Preferably, the connecting assembly includes a positioning bolt and a connecting plate, the connecting plate is arranged inside the drainage plate, the positioning bolt is arranged on the drainage plate, and the positioning bolt penetrates the connecting plate, the drainage plate is a double-plate structure, a circular ring is penetrated in the drainage wire clamp, and the circular ring end is fixedly connected with a plate.

[0008] Preferably, the positioning mechanism includes a concave bracket, a limiting bolt, a positioning column and a threaded hole, the concave bracket is fixedly arranged on the sliding slot, the limiting bolt is penetrated in the concave bracket, the threaded hole corresponding to the limiting bolt is arranged in the positioning plate, and the threaded hole is in communication with the cylinder, the outer surface of the limiting bolt is threadedly connected with the threaded hole, and the positioning column is fixedly arranged at the bottom end of the limiting bolt.

[0009] Preferably, the guiding mechanism includes a guiding groove and a guiding plate, the guiding grooves are symmetrically arranged on the positioning plate, the guiding plate is clamped in the guiding groove, and the guiding plate is fixedly connected with the inner wall of the sliding slot.

[0010] Preferably, the limiting mechanism comprises a guide shaft, a sliding block, a clamping block, a wear-resistant layer and a driving assembly, the guide shaft is symmetrically arranged inside the frame, the sliding block is arranged inside the frame and the guide shaft penetrates the sliding block, the clamping block is fixedly arranged on the sliding block, the wear-resistant layer is arranged on the clamping block, a No. 1 spring is arranged around the guide shaft, one end of the No. 1 spring is fixedly connected with the sliding block, the other end of the No. 1 spring is fixedly connected with the inner wall of the frame, and the driving assembly for driving the sliding block to move is arranged inside the frame.

[0011] Preferably, the monitoring mechanism comprises a square frame, an observation window, an indicating block and a display plate, the square frame is fixedly arranged at one end of the sliding groove, the drainage wire clamp is provided with a through groove corresponding to the square frame, and the through groove is located at one side of the plate, the top of the square frame is provided with the observation window, the inner wall of the square frame is fixedly provided with a supporting block, the indicating block is arranged inside the square frame and located directly below the observation window, the supporting block is located below the indicating block, and the display plate is fixedly arranged on the top of the indicating block.

[0012] Preferably, a guide cylinder is arranged in the indicating block, a limiting shaft is arranged in the guide cylinder, one end of the limiting shaft is fixedly connected with the inner wall of the square frame, a No. 2 spring is arranged around the limiting shaft, one end of the No. 2 spring is fixedly connected with the inner wall of the square frame, and the other end of the No. 2 spring is fixedly connected with the side surface of the indicating block.

[0013] Preferably, a square groove is fixedly arranged at the bottom of the indicating block, a No. 3 spring is fixedly arranged in the square groove, a baffle is arranged in the square groove, and the end of the No. 3 spring is fixedly connected with the baffle.

[0014] Preferably, a clamping groove is fixedly arranged in the inner wall of the square frame, a No. 4 spring is fixedly arranged in the clamping groove, a bearing plate is arranged in the clamping groove, the end of the No. 4 spring is fixedly connected with the bearing plate, the baffle is located above the bearing plate, a push plate is fixedly arranged on the bearing plate, a clamping block is fixedly arranged on the push plate, a limiting groove corresponding to the push plate is arranged in the square frame, the push plate penetrates the limiting groove, a push block is arranged in the sliding groove, and the side surface of the push block is fixedly connected with the push plate.

[0015] Preferably, a traction rope is fixedly connected with the side surface of the baffle, and a pulling block is arranged at the top of the square frame and fixedly connected with the end of the traction rope.

[0016] Compared with the prior art, the beneficial effects of the present application are: 1. The double-plate type thermal expansion sleeve strain clamp for extra-high voltage provided by the present application is convenient for multi-branch power supply by the cooperation of the positioning plate and the sliding groove, improves flexibility, and improves power grid power supply reliability and risk resistance. After the current-carrying wire of the branch is inserted into the cylinder, the positioning mechanism can position the position of the positioning plate and the position of the wire in the cylinder. The current-carrying clamp, the sliding groove and the positioning plate cooperate to guide the power to the wire for power supply of the branch, adapt to the power supply demand of multi-branch line, improve the safety and efficiency of construction and operation, compared with the ordinary strain clamp, no additional switching is required, can meet the power supply demand of complex scenes such as distribution area, multi-user branch line, can complete the connection of the main line and the multi-branch current-carrying at one time, and the structure is more compact, occupies small space, can optimize the line layout, reduce the friction and collision risk between wires, and is convenient for subsequent line inspection and maintenance.

[0017] 2. The double-plate type thermal expansion sleeve strain clamp for extra-high voltage provided by the present application can effectively improve the stability of the branch line connection through the cooperation of the clamping block and the tapered block, ensure the stability of power supply, and significantly enhance the stability of the branch line connection through the linkage structure of the clamping block and the tapered block. When the positioning plate completely enters the sliding groove, the guide plate presses the tapered block to make it rotate around the support shaft, the sliding block is driven to move smoothly along the guide shaft through the transmission of the pressure block, and finally the clamping block is fixed together with the wear-resistant layer to firmly fix the wire in the cylinder, ensuring the stability of power supply.

[0018] 3. The double-plate type thermal expansion sleeve strain clamp for extra-high voltage provided by the present application is convenient for monitoring the position of the current-carrying main line through the cooperation of the indicating block and the baffle, avoids the problem that the wire cannot be found in time when it is loose, improves the power grid power supply reliability, and makes the baffle located on one side of the plate. When the wire is accidentally loose and slides outward, the ring will drive the plate to move, the movement of the plate will drive the baffle to move, the indicating block and the display plate will move through the square groove, and the inspection personnel can observe the position of the display plate through the observation window. Whether the indicating block moves or not can be observed, and whether the wire is loose can be judged, which can effectively avoid large-scale power failure accidents caused by wire falling off and short circuit, especially for the main network and important load power supply line, which can effectively improve the power grid power supply reliability, and can be found and treated in time. Avoiding the development of small problems into serious faults such as wire breakage and fitting damage, if the fault occurs and is repaired, more manpower, material resources and financial resources need to be invested, and high power loss will also be generated.

[0019] 4. The extra-high voltage double-plate thermal expansion sleeve strain clamp provided by the present application can effectively improve the power supply stability by the connecting sleeve and the drainage plate. The connecting sleeve on the drainage plate is heated, and the principle of thermal expansion and cold contraction is used to make the connecting sleeve set on the aluminum pipe body, and the drainage plate is fixed at the specified position of the aluminum pipe body. After cooling, the connecting sleeve on the drainage plate is in interference fit with the aluminum pipe body, which enhances the electrical contact surface of the strain clamp, effectively avoids the problem of poor electrical contact of the electrical contact surface of the strain clamp, and the drainage plate is a double-plate structure. Through the cooperation and connection of the drainage plate and the drainage clamp, the wire can be uniformly clamped, avoiding local excessive stress and breaking of the drainage plate. The installation and disassembly process is simple and fast, convenient for construction and maintenance, increases the electrical contact surface, improves the electrical conductivity, improves the wear resistance and corrosion resistance of the strain clamp itself, and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the extra-high voltage double-plate thermal expansion sleeve strain clamp of the present application.

[0021] Figure 2 It is a structural schematic diagram of the aluminum pipe body of the present application.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the steel anchor and the connecting cylinder of the present application.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the drainage plate of the present application.

[0024] Figure 5 It is a structural schematic diagram of the sliding groove and the concave frame connection of the present application.

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the positioning plate of the present application.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the sliding groove and the guide plate of the present application.

[0027] Figure 8 It is a sectional view structural schematic diagram of the positioning plate and the frame of the present application.

[0028] Figure 9 It is a three-dimensional structural schematic diagram of the conical block of the present application.

[0029] Figure 10 It is a three-dimensional structural schematic diagram of the clamping block of the present application.

[0030] Figure 11 It is a structural schematic diagram of the square frame of the present application.

[0031] Figure 12 It is a structural schematic diagram of the square groove and the baffle of the present application.

[0032] Figure 13 It is a schematic diagram of the three-dimensional structure of the threaded rod and the rectangular fixed slot of the present application.

[0033] Figure 14 It is a schematic diagram of the structure of the load-bearing plate of the present application.

[0034] Figure 15 It is a schematic diagram of the three-dimensional structure of the indicating block of the present application.

[0035] Figure 16 It is a schematic diagram of the structure of the circular ring and the plate of the present application.

[0036] In the figure: 1, aluminum pipe body; 2, steel anchor; 3, connecting cylinder; 4, fixed ring; 5, connecting sleeve; 6, drainage plate; 7, positioning bolt; 8, connecting plate; 9, drainage wire clamp; 10, limiting ring; 11, sliding groove; 12, concave frame; 13, positioning plate; 14, limiting bolt; 15, positioning column; 16, cylinder; 17, threaded hole; 18, guide groove; 19, guide plate; 20, frame; 21, support shaft; 22, conical block; 23, No. 1 spring; 24, guide shaft; 25, sliding block; 26, clamping block; 27, square frame; 28, through groove; 29, observation window; 30, support block; 31, indicating block; 32, display plate; 33, guide cylinder; 34, limiting shaft; 35, No. 2 spring; 36, square groove; 37, No. 3 spring; 38, baffle; 39, clamping groove; 40, No. 4 spring; 41, load-bearing plate; 42, push plate; 43, clamping block; 44, limiting groove; 45, push block; 46, circular ring; 47, plate; 48, pull block; 49, traction rope; 50, wear-resistant layer; 51, pressing block. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] Please refer to Figures 1-16The application provides a technical scheme: a special high-voltage double-plate thermal expansion sleeve strain clamp, which comprises an aluminum pipe body 1, a steel anchor 2 for fixing a wire is arranged in the aluminum pipe body 1, a fixing ring 4 is arranged at the end of the steel anchor 2, a connecting barrel 3 is fixedly arranged on the steel anchor 2, a connecting sleeve 5 is sleeved on the aluminum pipe body 1, a drainage plate 6 is fixedly connected to the bottom of the connecting sleeve 5, a connecting assembly is arranged in the drainage plate 6, the drainage plate 6 is fixedly connected with a drainage wire clamp 9 through the connecting assembly, a limiting ring 10 is fixedly connected to the bottom end of the drainage wire clamp 9, a sliding groove 11 is fixedly connected to the drainage wire clamp 9, a positioning plate 13 is arranged in the sliding groove 11, a guide mechanism for guiding and limiting the positioning plate 13 is arranged in the sliding groove 11, a positioning mechanism for positioning the position of the positioning plate 13 is arranged on the sliding groove 11, a cylinder 16 for fixing the wire is arranged at the center position of the positioning plate 13, a frame 20 is symmetrically arranged in the positioning plate 13 and located at one side of the cylinder 16, a limiting mechanism for fixing the wire in the cylinder 16 is arranged in the frame 20, and a monitoring mechanism for monitoring the position of the wire in the drainage wire clamp 9 is arranged on the sliding groove 11.

[0039] Before fixing the conductor by using the extra-high voltage double-plate thermal expansion sleeve strain clamp, the connecting sleeve 5 on the drainage plate 6 is heated by means of tools, and the principle of thermal expansion and cold shrinkage is used to make the connecting sleeve 5 fit on the aluminum pipe body 1, so as to fix the drainage plate 6 at a specified position of the aluminum pipe body 1. After cooling, the connecting sleeve 5 on the drainage plate 6 is in interference fit with the aluminum pipe body 1, which enhances the electrical contact surface of the strain clamp, effectively avoids the problem of poor electrical contact of the electrical contact surface of the strain clamp, and the drainage plate 6 is a double-plate structure. When fixing the conductor and bearing the conductor tension, the conductor is fixedly connected with the connecting cylinder 3 on the steel anchor 2, and then the steel anchor 2 is partially moved into the aluminum pipe body 1, and the aluminum pipe body 1 is fixedly connected with the steel anchor 2 by using tools (prior art). In the later stage, the position of the extra-high voltage double-plate thermal expansion sleeve strain clamp can be fixed by using the workpiece in cooperation with the fixed ring 4 on the steel anchor 2, so as to realize the purpose of fixing the conductor and bearing the conductor tension. The drainage plate 6 is a double-plate structure, and through the cooperation and connection of the drainage plate 6 and the drainage clamp 9, the conductor can be uniformly clamped, avoiding local excessive stress and problems such as breakage of the drainage plate 6. The drainage plate 6 and the drainage clamp 9 are fixed by using the positioning bolt 7, so the installation and disassembly process is simple and fast, which is convenient for construction and maintenance. At the same time, the setting of the connecting sleeve 5 makes the drainage plate 6 more firm, increases the electrical contact surface, improves the electrical conductivity, improves the wear resistance and corrosion resistance of the strain clamp itself, and prolongs the service life. When the drainage clamp 9 connects the conductor to guide the current to other circuits, one end of the power supply conductor enters the inside of the circular ring 46, and the conductor is fixedly connected with the circular ring 46 by means of tools. Then the conductor enters the inside of the drainage clamp 9 through the limiting ring 10, and the circular ring 46 and the plate block 47 are moved by the conductor, so that the plate block 47 moves to one side of the through groove 28. The limiting ring 10 is pressed by using hydraulic tools, so that the limiting ring 10 is fixedly connected with the conductor, and then the conductor entering the inside of the drainage clamp 9 is fixed, so that the conductor can be drained;

[0040] When multiple branch drainage power supply is needed, the drainage conductor for branch is inserted into the inside of the cylinder 16, and through the cooperation of the guide mechanism, the positioning plate 13 can slide in the sliding groove 11, so that the positioning plate 13 completely enters the inside of the sliding groove 11. Through the positioning mechanism, the position of the positioning plate 13 can be positioned, and the position of the conductor in the inside of the cylinder 16 can also be positioned. The drainage clamp 9, the sliding groove 11 and the positioning plate 13 cooperate to guide the power supply to the conductor, which meets the power supply demand of multiple branch lines, improves the safety and efficiency of construction and operation, and compared with ordinary strain clamp, it does not need additional switching, can meet the power supply demand of complex scenes such as power distribution area and multiple user branch lines, can complete the fixing of main line and the connection of multiple branch drainage at one time, reduces the construction process and the cost of purchasing accessories, shortens the operation time, and is especially suitable for scenes with limited operation conditions such as high altitude and wild field. The structure is more compact, occupies less space, can optimize the layout of the line, reduce the friction and collision risk between the conductors, and is also convenient for subsequent line inspection and maintenance.

[0041] After the positioning plate 13 completely enters the inside of the sliding groove 11, the limiting mechanism is driven to move, further limiting and fixing the drainage wire entering the inside of the cylinder 16, improving the stability of the connection, and the monitoring mechanism is also moved to monitor the position of the drainage wire in the drainage wire clamp 9. When the inspection personnel conduct inspection, it is convenient for the personnel to timely judge whether the position of the drainage wire is loose or displaced, which can effectively avoid large-scale power failure accidents caused by wire falling off and short circuit, especially for the main network and important load power supply lines. It can effectively improve the reliability of power grid power supply, and can be timely discovered and processed to avoid small problems developing into serious faults such as wire breakage and hardware damage. If the fault occurs and is repaired later, more manpower, material resources and financial resources need to be invested, and high power loss will also be generated.

[0042] Further, the connecting assembly includes the positioning bolt 7 and the connecting plate 8, the connecting plate 8 is arranged in the drainage plate 6, the positioning bolt 7 is arranged on the drainage plate 6, and the positioning bolt 7 penetrates through the connecting plate 8. The drainage plate 6 is a double-plate structure, a circular ring 46 is arranged in the drainage wire clamp 9, and a plate 47 is fixedly connected to the end of the circular ring 46.

[0043] When the double-plate type thermal expansion sleeve strain clamp is used, the connecting plate 8 is inserted into the inside of the drainage plate 6 after the drainage plate 6 is connected with the drainage wire clamp 9, the pre-set hole is aligned, then the positioning bolt 7 penetrates through the hole, and the nut and the gasket are used to connect with the positioning bolt 7, so that the drainage plate 6 and the drainage wire clamp 9 are fixedly connected.

[0044] Further, the positioning mechanism includes the concave frame 12, the limiting bolt 14, the positioning column 15 and the threaded hole 17. The concave frame 12 is fixedly arranged on the sliding groove 11, the limiting bolt 14 is arranged in the concave frame 12, the threaded hole 17 corresponding to the limiting bolt 14 is arranged in the positioning plate 13, and the threaded hole 17 is in communication with the cylinder 16. The outer surface of the limiting bolt 14 is threadedly connected with the threaded hole 17, and the positioning column 15 is fixedly arranged at the bottom end of the limiting bolt 14.

[0045] After the positioning plate 13 completely enters the inside of the sliding groove 11, the threaded hole 17 is aligned with the limiting bolt 14, the limiting bolt 14 is rotated, and after the limiting bolt 14 is threadedly connected with the threaded hole 17, the position of the positioning plate 13 can be positioned. After the limiting bolt 14 is threadedly connected with the threaded hole 17, the positioning column 15 can enter the inside of the cylinder 16, and the position of the wire in the inside of the cylinder 16 can be clamped by the positioning column 15, thereby improving the stability of the wire in the inside of the cylinder 16.

[0046] Further, the guide mechanism includes the guide groove 18 and the guide plate 19. The guide groove 18 is symmetrically arranged on the positioning plate 13, the guide plate 19 is clamped in the guide groove 18, and the guide plate 19 is fixedly connected with the inner wall of the sliding groove 11.

[0047] The positioning plate 13 moves, and the guide groove 18 slides on the guide plate 19. The guide groove 18 and the guide plate 19 cooperate to guide the positioning plate 13, so that the positioning plate 13 moves stably, and the flexibility is improved.

[0048] Further, the limiting mechanism comprises a guide shaft 24, a sliding block 25, a clamping block 26, a wear-resistant layer 50 and a driving assembly. The guide shaft 24 is symmetrically arranged in the frame 20. The sliding block 25 is arranged in the frame 20, and the guide shaft 24 penetrates the sliding block 25. The clamping block 26 is fixedly arranged on the sliding block 25. The wear-resistant layer 50 is arranged on the clamping block 26. A first spring 23 is arranged around the guide shaft 24. One end of the first spring 23 is fixedly connected with the sliding block 25, and the other end of the first spring 23 is fixedly connected with the inner wall of the frame 20. The driving assembly for driving the sliding block 25 to move is arranged in the frame 20. The driving assembly comprises a supporting shaft 21, a conical block 22 and a pressing block 51. The supporting shaft 21 is fixedly arranged in the frame 20. The conical block 22 is arranged in the frame 20, and one side of the conical block 22 is rotatably connected with the supporting shaft 21. One side of the conical block 22 extends into the guide groove 18. The pressing block 51 is fixedly connected with the conical block 22, and the pressing block 51 is located on one side of the sliding block 25.

[0049] When the positioning plate 13 slides into the sliding groove 11, the guide groove 18 slides on the guide plate 19. When the positioning plate 13 is about to completely enter the sliding groove 11, the guide plate 19 applies pressure to one side of the conical block 22. The conical block 22 moves circumferentially around the supporting shaft 21. The movement of the conical block 22 drives the pressing block 51 to move. The movement of the pressing block 51 drives the sliding block 25 to move. The guide shaft 24 guides the sliding block 25 to move stably. The movement of the sliding block 25 drives the clamping block 26 to move. The movement of the clamping block 26 drives the wear-resistant layer 50 to move. When the positioning plate 13 completely enters the sliding groove 11, the clamping block 26 and the wear-resistant layer 50 cooperate to fix and clamp the wires in the cylinder 16, thereby ensuring the stability of the wire connection.

[0050] Further, the monitoring mechanism comprises a square frame 27, an observation window 29, an indicating block 31 and a display plate 32. The square frame 27 is fixedly arranged at one end of the sliding groove 11. The drainage wire clamp 9 is provided with a through groove 28 corresponding to the square frame 27, and the through groove 28 is located on one side of the plate 47. The square frame 27 is provided with the observation window 29 at the top. The square frame 27 is provided with a supporting block 30 on the inner wall. The indicating block 31 is arranged in the square frame 27, and the indicating block 31 is located directly below the observation window 29. The supporting block 30 is located below the indicating block 31. The display plate 32 is fixedly arranged on the top of the indicating block 31.

[0051] The display plate 32 is provided with two color areas, and initially, the color light part is located directly below the observation window 29, and the inspection personnel can conveniently watch the position of the display plate 32 through the observation window 29. When the indicating block 31 moves, the display plate 32 is driven to move, and then whether the indicating block 31 moves can be seen through the observation window 29, and then whether the monitoring wire is loose can be judged. Through the cooperation of the supporting block 30 and the square frame 27, the indicating block 31 can be oriented, limited and guided to move stably.

[0052] Further, the indicating block 31 is internally arranged with a guide cylinder 33, the guide cylinder 33 is internally penetrated with a limiting shaft 34, one end of the limiting shaft 34 is fixedly connected with the inner wall of the square frame 27, a No. 2 spring 35 is arranged around the limiting shaft 34, one end of the No. 2 spring 35 is fixedly connected with the inner wall of the square frame 27, and the other end of the No. 2 spring 35 is fixedly connected with the side surface of the indicating block 31;

[0053] Initially, the guide cylinder 33 and the limiting shaft 34 cooperate to guide the indicating block 31 to move stably, and the No. 2 spring 35 exerts pressure on one side of the indicating block 31 to effectively avoid the indicating block 31 from shaking left and right.

[0054] Further, the indicating block 31 is internally arranged with a guide cylinder 33, the guide cylinder 33 is internally penetrated with a limiting shaft 34, one end of the limiting shaft 34 is fixedly connected with the inner wall of the square frame 27, a No. 2 spring 35 is arranged around the limiting shaft 34, one end of the No. 2 spring 35 is fixedly connected with the inner wall of the square frame 27, and the other end of the No. 2 spring 35 is fixedly connected with the side surface of the indicating block 31;

[0055] The bearing plate 41 supports and limits the bottom of the baffle plate 38, after the bearing plate 41 is moved, the bottom of the baffle plate 38 is no longer limited, the No. 3 spring 37 is reset to push the baffle plate 38 to move, the square frame 27 is connected with the internal drainage wire clamp 9 through the penetrating groove 28, when the baffle plate 38 moves downward, one end of the baffle plate 38 enters the internal drainage wire clamp 9 to make the baffle plate 38 located on one side of the plate block 47.

[0056] Further, the square frame 27 is internally fixedly provided with a clamping groove 39, the clamping groove 39 is internally fixedly provided with a No. 4 spring 40, the clamping groove 39 is internally penetrated with the bearing plate 41, and the end of the No. 4 spring 40 is fixedly connected with the bearing plate 41. The baffle plate 38 is located above the bearing plate 41, the bearing plate 41 is fixedly provided with a push plate 42, the push plate 42 is fixedly provided with a clamping block 43, the square frame 27 is internally provided with a limiting groove 44 corresponding to the push plate 42, the push plate 42 penetrates the limiting groove 44, the internal sliding groove 11 is penetrated with a push block 45, and the side surface of the push block 45 is fixedly connected with the push plate 42;

[0057] When the positioning plate 13 slides to the inside of the sliding groove 11, the push block 45 is pushed to move, and the push block 45 moves through the push plate 42 to drive the bearing plate 41 to move, and then the bearing plate 41 no longer supports and positions the bottom of the baffle plate 38, and the baffle plate 38 can move downward. When the baffle plate 38 is located above the bearing plate 41, the No. 4 spring 40 exerts pressure on the side surface of the bearing plate 41, the push plate 42, the clamping block 43 and the limiting groove 44 cooperate to limit the bearing plate 41.

[0058] Further, the side surface of the baffle plate 38 is fixedly connected with a traction rope 49, the top of the square frame 27 is provided with a pulling block 48, and the end of the traction rope 49 is fixedly connected with the pulling block 48.

[0059] When it is necessary to reset the baffle plate 38, the pulling block 48 is pulled, and the baffle plate 38 is driven to move upward through the traction rope 49, so that the baffle plate 38 can be reset. After the baffle plate 38 is reset, it no longer limits one side of the bearing plate 41, the No. 4 spring 40 is reset, and the bearing plate 41 is driven to move and reset, so that the bearing plate 41 is located directly below the baffle plate 38 to support the baffle plate 38.

[0060] Working principle: first, before fixing the wire with the extra-high voltage double-plate thermal expansion sleeve strain clamp, the connecting sleeve 5 on the drainage plate 6 is heated with the help of tools, and the principle of thermal expansion and cold shrinkage is used to make the connecting sleeve 5 fit on the aluminum pipe body 1, and the drainage plate 6 is fixed on the specified position of the aluminum pipe body 1. After cooling, the connecting sleeve 5 on the drainage plate 6 is in interference fit with the aluminum pipe body 1, which enhances the electrical contact surface of the strain clamp, effectively avoids the problem of poor electrical contact of the electrical contact surface of the strain clamp, and the drainage plate 6 is a double-plate structure. When the wire is fixed and bears the tension of the wire, the wire is fixedly connected with the connecting cylinder 3 on the steel anchor 2, and then the steel anchor 2 is partially moved into the aluminum pipe body 1, and the aluminum pipe body 1 is fixedly connected with the steel anchor 2 (prior art). In the later stage, the workpiece is used in cooperation with the fixed ring 4 on the steel anchor 2 to fix the position of the extra-high voltage double-plate thermal expansion sleeve strain clamp, thereby realizing the purpose of fixing the wire and bearing the tension of the wire. The drainage plate 6 is a double-plate structure, which can make the wire receive uniform clamping force through the cooperation of the drainage plate 6 and the drainage clamp 9, avoid local overloading, and prevent the drainage plate 6 from breaking. The drainage plate 6 and the drainage clamp 9 are fixed by the positioning bolt 7, so the installation and disassembly process is simple and fast, which is convenient for construction and maintenance. At the same time, the setting of the connecting sleeve 5 makes the drainage plate 6 more firm, increases the electrical contact surface, improves the electrical conductivity, and improves the wear resistance and corrosion resistance of the strain clamp itself, prolonging the service life. When the drainage clamp 9 connects the wire to guide the current to other circuits, the power supply wire enters the inside of the circular ring 46, and the wire is fixedly connected with the circular ring 46 with the help of tools, and then enters the inside of the drainage clamp 9 through the limiting ring 10. By pushing the circular ring 46 and the plate 47 with the wire, the plate 47 is moved to one side of the through groove 28, and then the limiting ring 10 is pressed tightly by using hydraulic tools, so that the limiting ring 10 is fixedly connected with the wire, thereby fixing the wire entering the inside of the drainage clamp 9, so that the wire can be drained. When multiple branch lines are needed for power supply, the drainage wire used by the branch line is inserted into the inside of the cylinder 16, and then the positioning plate 13 is slid in the sliding groove 11 through the cooperation of the guide mechanism, so that the positioning plate 13 completely enters the inside of the sliding groove 11. At the same time, the position of the wire in the cylinder 16 can be positioned by the positioning mechanism. The drainage clamp 9, the sliding groove 11 and the positioning plate 13 cooperate to guide the power supply to the wire, which meets the power supply demand of multiple branch lines, improves the safety and efficiency of construction and operation, and does not need additional switching compared with ordinary strain clamps. It can meet the power supply demand of complex scenes such as power distribution area and multiple user branch lines, complete the fixing of main line and the connection of multiple branch lines at one time, reduce the construction process and the cost of purchasing accessories, shorten the operation time, and is especially suitable for scenes with limited operation conditions such as high altitude and wildness. The structure is more compact, occupies less space, can optimize the layout of the line, reduce the friction and collision risk between the wires, and is convenient for subsequent line inspection and maintenance. After the positioning plate 13 completely enters the inside of the sliding groove 11,When the positioning plate 13 slides to the inside of the sliding groove 11, the guide groove 18 slides on the guide plate 19, and when the positioning plate 13 is about to completely enter the inside of the sliding groove 11, the guide plate 19 will press one side of the conical block 22, the conical block 22 will move around the support shaft 21 in a circle, the movement of the conical block 22 will drive the pressing block 51 to move, the movement of the pressing block 51 will drive the sliding block 25 to move, the sliding block 25 is guided by the guide shaft 24, so that the sliding block 25 moves stably, the movement of the sliding block 25 drives the clamping block 26 to move, and the clamping block 26 drives the wear-resistant layer 50 to move, when the positioning plate 13 completely enters the inside of the sliding groove 11, the clamping block 26 and the wear-resistant layer 50 cooperate to fix and clamp the wires in the cylinder 16, thereby ensuring the stability of the wire connection, the display plate 32 is provided with two color areas, and initially, the color light part is located below the observation window 29, when the positioning plate 13 slides to the inside of the sliding groove 11, the push block 45 is pushed to move, the push block 45 moves through the push plate 42 to drive the bearing plate 41 to move, so that the bearing plate 41 no longer supports and limits the bottom of the baffle plate 38, and the baffle plate 38 can move downward, when the baffle plate 38 moves downward, one end of the baffle plate 38 enters the inside of the drainage wire clamp 9, so that the baffle plate 38 is located on one side of the plate block 47, when the wire is accidentally loose and slides outward, the circular ring 46 drives the plate block 47 to move, so that the movement of the plate block 47 pushes the baffle plate 38 to move, the square groove 36 drives the indicating block 31 and the display plate 32 to move, the patrol personnel can observe the display plate 32 through the observation window 29, and whether the indicating block 31 moves can be observed, so that whether the monitoring wire is loose can be judged, the large-area power failure accident caused by wire falling off and short circuit can be effectively avoided, especially for the main network and important load power supply line, the power grid power supply reliability can be effectively improved, the small problem can be found and treated in time, and the wire breakage, hardware damage and other serious faults are avoided, if the fault occurs and then is repaired, more manpower, material resources and financial resources need to be invested, and high power loss is also generated.

[0061] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

Claims

1. A double-plate thermal expansion sleeve tension clamp for ultra-high voltage transmission, characterized in that: The device includes an aluminum tube body (1), inside which is a steel anchor (2) for fixing the wire. A fixing ring (4) is provided at the end of the steel anchor (2). A connecting cylinder (3) is fixedly provided on the steel anchor (2). A connecting sleeve (5) is fitted on the aluminum tube body (1). A drain plate (6) is fixedly connected to the bottom of the connecting sleeve (5). A connecting assembly is provided inside the drain plate (6). A drain clamp (9) is fixedly connected to the drain plate (6) through the connecting assembly. A limit ring (10) is fixedly connected to the bottom of the drain clamp (9). A groove (11) is fixedly connected to the drain clamp (9). The groove (11) contains... A positioning plate (13) is provided in the part. A guide mechanism for guiding and limiting the positioning plate (13) is provided inside the slide groove (11). A positioning mechanism for positioning the positioning plate (13) is provided on the slide groove (11). A cylinder (16) for fixing the wire is provided at the center of the positioning plate (13). A frame (20) is symmetrically arranged inside the positioning plate (13), and the frame (20) is located on one side of the cylinder (16). A limiting mechanism for fixing the wire inside the cylinder (16) is provided inside the frame (20). A monitoring mechanism for monitoring the position of the wire inside the drain clamp (9) is provided on the slide groove (11).

2. The ultra-high voltage double-plate thermal expansion sleeve tension clamp according to claim 1, characterized in that: The connecting assembly includes a positioning bolt (7) and a connecting plate (8). The connecting plate (8) is located inside the diversion plate (6). The positioning bolt (7) is located on the diversion plate (6) and passes through the connecting plate (8). The diversion plate (6) has a double plate structure. A ring (46) is inserted inside the diversion clamp (9). A plate (47) is fixedly connected to the end of the ring (46).

3. The ultra-high voltage double-plate thermal expansion sleeve tension clamp according to claim 2, characterized in that: The positioning mechanism includes a concave frame (12), a limiting bolt (14), a positioning post (15), and a threaded hole (17). The concave frame (12) is fixedly mounted on the slide groove (11). The limiting bolt (14) passes through the concave frame (12). The threaded hole (17) corresponding to the limiting bolt (14) is located inside the positioning plate (13), and the threaded hole (17) is connected to the cylinder (16). The outer surface of the limiting bolt (14) is threadedly connected to the threaded hole (17). The positioning post (15) is fixedly mounted at the bottom end of the limiting bolt (14).

4. The ultra-high voltage double-plate thermal expansion sleeve tension clamp according to claim 3, characterized in that: The guiding mechanism includes a guide groove (18) and a guide plate (19). The guide groove (18) is symmetrically arranged on the positioning plate (13). The guide plate (19) is engaged inside the guide groove (18) and is fixedly connected to the inner wall of the slide groove (11).

5. The ultra-high voltage double-plate thermal expansion sleeve tension clamp according to claim 1, characterized in that: The limiting mechanism includes a guide shaft (24), a sliding block (25), a clamping block (26), a wear-resistant layer (50), and a drive assembly. The guide shaft (24) is symmetrically arranged inside the frame (20). The sliding block (25) is arranged inside the frame (20), and the guide shaft (24) passes through the sliding block (25). The clamping block (26) is fixedly arranged on the sliding block (25), and the wear-resistant layer (50) is arranged on the clamping block (26). A first spring (23) is arranged around the guide shaft (24), and one end of the first spring (23) is fixedly connected to the sliding block (25). The other end of the first spring (23) is fixedly connected to the sliding block (25). A drive assembly for driving the sliding block (25) to move is fixedly connected to the inner wall of the frame (20) at one end. The drive assembly includes a support shaft (21), a conical block (22) and a pressure block (51). The support shaft (21) is fixedly installed inside the frame (20). The conical block (22) is installed inside the frame (20), and one side of the conical block (22) is rotatably connected to the support shaft (21). One side of the conical block (22) extends into the guide groove (18). The pressure block (51) is fixedly connected to the conical block (22), and the pressure block (51) is located on one side of the sliding block (25).

6. The ultra-high voltage double-plate thermal expansion sleeve tension clamp according to claim 5, characterized in that: The monitoring mechanism includes a square frame (27), an observation window (29), an indicator block (31), and a display panel (32). The square frame (27) is fixedly installed at one end of the slide groove (11). The drain clamp (9) is provided with a through groove (28) corresponding to the square frame (27), and the through groove (28) is located on one side of the plate (47). The square frame (27) is provided with an observation window (29) at the top. The square frame (27) is fixedly installed with a support block (30) on the inner wall of the square frame (27). The indicator block (31) is installed inside the square frame (27) and is located directly below the observation window (29). The support block (30) is located below the indicator block (31). The display panel (32) is fixedly installed on the top of the indicator block (31).

7. A double-plate thermal expansion sleeve tension clamp for ultra-high voltage as described in claim 6, characterized in that: The indicator block (31) is internally arranged with guide cylinders (33), and a limiting shaft (34) is inserted inside the guide cylinder (33). One end of the limiting shaft (34) is fixedly connected to the inner wall of the square frame (27). A second spring (35) is arranged around the limiting shaft (34), and one end of the second spring (35) is fixedly connected to the inner wall of the square frame (27). The other end of the second spring (35) is fixedly connected to the side of the indicator block (31).

8. A double-plate thermal expansion sleeve tension clamp for ultra-high voltage as described in claim 7, characterized in that: The bottom of the indicator block (31) is fixedly provided with a square groove (36), and a No. 3 spring (37) is fixedly provided inside the square groove (36). A baffle (38) passes through the square groove (36), and the end of the No. 3 spring (37) is fixedly connected to the baffle (38).

9. A double-plate thermal expansion sleeve tension clamp for ultra-high voltage as described in claim 8, characterized in that: The inner wall of the square frame (27) is fixedly provided with a slot (39), and a No. 4 spring (40) is fixedly provided inside the slot (39). A load-bearing plate (41) is passed through the slot (39), and the end of the No. 4 spring (40) is fixedly connected to the load-bearing plate (41). The baffle (38) is located above the load-bearing plate (41). A push plate (42) is fixedly provided on the load-bearing plate (41), and a locking block (43) is fixedly provided on the push plate (42). The inside of the square frame (27) is provided with a limiting groove (44) corresponding to the push plate (42), and the push plate (42) passes through the limiting groove (44). A push block (45) is passed through the sliding groove (11), and the side of the push block (45) is fixedly connected to the push plate (42).

10. A double-plate thermal expansion sleeve tension clamp for ultra-high voltage as described in claim 9, characterized in that: The baffle (38) is fixedly connected to the side of the traction rope (49), and the square frame (27) is provided with a pull block (48) on the top, and the end of the traction rope (49) is fixedly connected to the pull block (48).

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