Special-shaped tension plates for transmission lines

Abstract

The invention discloses a special-shaped tension-resistant connecting plate for a power transmission line, comprising a special-shaped main board, a slot is provided in the middle of one end face of the special-shaped main board, a horizontally inserted square board is inserted in the slot and fixed by welding, an upper tension-resistant hanging point and a lower tension-resistant hanging point are respectively provided near the top and the other end face of the special-shaped main board, and an adjustment limit mechanism is installed on the upper tension-resistant hanging point and the lower tension-resistant hanging point. A string of hanging insulators is provided at both ends of the horizontally inserted square board, each tension-resistant hanging point is connected to a triangular connecting plate by bolts, and the adjustment limit mechanism can be used to adjust and limit the two sides of the top angle of the triangular connecting plate, so as to facilitate the limit fixation of triangular connecting plates with different top angles, and the triangular connecting plate has two hanging wire points, forming two lower front horizontal hanging points and two upper rear horizontal hanging points in space, forming a simple tension-resistant wire structure, shortening the length of the hardware string, avoiding the cumbersome structure of using a 30-degree angle lead wire on the drainage wire of an ordinary jumper structure, and adding a jumper spacer rod, thereby enhancing the safety and reliability of the operation of the power transmission line.

Description

Technical Field

[0001] The invention relates to the technical field of power system transmission lines, in particular to a special-shaped tension joint plate for a transmission line. Background Art

[0002] In the transmission line, the tension string of the transmission line bears the tension of the conductor and ground wire, which is related to the safety and reliability of the project. At present, the typical tension string running in the 500kV high-voltage transmission line mostly adopts left-right symmetrical connecting plates to form four equidistant hanging points in the vertical plane. The upper drainage line adopts a 30-degree angle lead, and the two lower hanging points are lengthened with an extension rod. When the upper down-lead passes the extension rod, in order to avoid collision in special circumstances such as wind swing, a TJ-type jumper wire clamp is installed between the upper down-lead and the extension rod. This type of tension string jumper has many components and a long string type, which makes the tension string cumbersome and the overall cost high. How to make the drainage jumper of the tension string not conflict or interfere with other hardware is a way to completely solve the collision. Therefore, the structural optimization of the string type of the tension string is of great significance to ensure the safe operation of the high-voltage line. For this reason, we propose to use special-shaped tension connecting plates for transmission lines to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a special-shaped tension joint plate for a power transmission line to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a special-shaped tension-resistant connecting plate for a power transmission line, comprising a special-shaped main board, a slot is opened in the middle of an end face of one end of the special-shaped main board, a transversely inserted square plate is inserted into the slot, and the transversely inserted square plate is welded and fixed to the slot, a plurality of connecting holes are opened at both ends of the transversely inserted square plate, an upper tension-resistant hanging point and a lower tension-resistant hanging point are respectively provided at the top of one end and the other end face of the special-shaped main board close to the slot, a U-shaped groove is provided in the middle of the upper tension-resistant hanging point and the lower tension-resistant hanging point, and an adjustment limit mechanism is installed on the upper tension-resistant hanging point and the lower tension-resistant hanging point on both sides of the U-shaped groove.

[0005] In a preferred implementation case, the special-shaped main board is an irregular L-shaped structure, and a plurality of weight-reducing holes are opened on the special-shaped main board, thereby reducing the overall weight and facilitating overhead wiring.

[0006] In a preferred implementation case, the transversely inserted square plate is formed into an isosceles trapezoidal structure, the transversely inserted square plate is welded to the special-shaped main board to form a "cross" structure, the inner cavity top and bottom of the slot are provided with positioning grooves, the top and bottom surfaces of the transversely inserted square plate are integrally formed with positioning blocks, and the positioning blocks are slidably engaged with the positioning grooves.

[0007] In a preferred implementation example, the positioning groove and the positioning block are respectively located on the center line of the slot and the horizontally inserted square plate, and the outer walls of the special-shaped mainboard on both sides of the slot are integrally formed with transition edges of a square platform structure.

[0008] In a preferred implementation case, the adjustment limit mechanism includes an upper side plate and a lower side plate, and the upper tension hanging point and the lower tension hanging point side walls at the top and bottom of the U-shaped groove are fixedly installed with the upper side plate and the lower side plate respectively, and the upper side plate and the lower side plate are respectively provided with an upper connecting groove and a lower connecting groove, and the inner cavities at both ends of the upper connecting groove and the lower connecting groove are both slidably penetrated by a pin, and the pin is a cylindrical structure, and the small diameter end of the pin penetrates the lower connecting groove and is sleeved with a locking nut through a threaded structure, and the inner wall of the upper connecting groove is fixedly installed with a fixing tooth, and the outer wall of the pin near the large diameter end is fixedly installed with a gear ring, and the gear ring is inserted into the upper connecting groove and meshes with the fixed tooth.

[0009] In a preferred implementation case, bolt mounting holes are provided on the upper tension hanging point and the lower tension hanging point, the upper connecting groove and the lower connecting groove are both arc-shaped structures, and the axes of the upper connecting groove and the lower connecting groove coincide with the bolt mounting holes.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The horizontally inserted square plate is positioned and inserted into the slot through the positioning block and the positioning groove, so as to be quickly positioned and installed, which is convenient for quick welding and fixing, so that the horizontally inserted square plate and the special-shaped main board are in a cross shape, and the connecting holes at both ends of the horizontally inserted square plate are symmetrically hung with insulator strings, so that the horizontally inserted square plate and the special-shaped main board are balanced in force;

[0012] 2. The special-shaped mainboard uses its special shape to form upper and lower tension hanging points at different spatial positions in the lower front and upper rear. Each tension hanging point can be connected to the triangular connecting plate through bolts. The connection holes at the other two bottom feet of the triangular connecting plate form two lower front horizontal hanging points and two upper rear horizontal hanging points in space, forming a simple tension wire structure, shortening the length of the hardware string, reducing the number of components used, saving materials, and avoiding the cumbersome structure of using angle leads on the drainage wires of ordinary jumper structures and installing jumper spacer bars on the extension rods, thereby enhancing the safety and reliability of the transmission line operation;

[0013] 3. The two pins slide along the upper connecting groove and the lower connecting groove, and fit the side walls on both sides of the top angle of the triangular connecting plate. The gear ring engages with the fixing teeth, and the locking nut is threadedly connected to the bottom of the pin. Then the pin is completely fixed, thereby quickly limiting and fixing the triangular connecting plate, avoiding shaking of the special-shaped main board, and improving the stability of the transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is an exploded view of the structure of the present invention;

[0016] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0017] In the figure: 1. Special-shaped mainboard; 2. Slot; 3. Horizontally inserted square plate; 4. Connecting hole; 5. Upper tension hanging point; 6. Lower tension hanging point; 7. U-shaped groove; 8. Adjustment limit mechanism; 81. Gear ring; 82. Latch; 83. Upper side plate; 84. Upper connecting groove; 85. Fixed tooth; 86. Lower connecting groove; 87. Lower side plate; 88. Locking nut; 9. Weight reduction hole; 10. Positioning groove; 11. Positioning block; 12. Transition edge. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-3 The present invention provides a technical solution: a special-shaped tension-resistant connecting plate for a power transmission line, comprising a special-shaped main board 1, a slot 2 is opened in the middle of one end surface of the special-shaped main board 1, a horizontally inserted square plate 3 is inserted in the slot 2, and the horizontally inserted square plate 3 is welded and fixed to the slot 2, and a plurality of connection holes 4 are opened at both ends of the horizontally inserted square plate 3, an upper tension-resistant hanging point 5 and a lower tension-resistant hanging point 6 are respectively arranged at the top of one end of the special-shaped main board 1 close to the slot 2 and the other end surface, a U-shaped groove 7 is arranged in the middle of the upper tension-resistant hanging point 5 and the lower tension-resistant hanging point 6, and an adjustment limit mechanism 8 is installed on the upper tension-resistant hanging point 5 and the lower tension-resistant hanging point 6 on both sides of the U-shaped groove 7. The connecting holes 4 at both ends of the horizontally inserted square plate 3 can be used to hang insulator strings. The special-shaped main board 1 uses its special shape to form upper tension hanging points 5 and lower tension hanging points 6 at different spatial positions in the lower front and upper rear. Each tension hanging point can be connected to the triangular connecting plate by bolts, and the triangular connecting plate is installed in the U-shaped groove 7 by bolts. By adjusting the limiting mechanism 8, the two sides of the top angle of the triangular connecting plate can be adjusted and limited, which is convenient for limiting and fixing the triangular connecting plates with different top angles. The triangular connecting plate has two hanging points, forming two lower front horizontal hanging points and two upper rear horizontal hanging points in space, forming a simple tension wire structure, shortening the length of the hardware string, reducing the number of components used, saving materials, and avoiding the cumbersome structure of using 30-degree angle leads for the drainage lines on ordinary jumper structures and adding jumper spacer bars on the extension pull rods, thereby enhancing the safety and reliability of the operation of the transmission line.

[0020] The special-shaped main board 1 is an irregular L-shaped structure, and a plurality of weight-reducing holes 9 are opened on the special-shaped main board 1, thereby reducing the overall weight and facilitating overhead wiring.

[0021] The transversely inserted square plate 3 forms an isosceles trapezoidal structure, and the transversely inserted square plate 3 is welded with the special-shaped main board 1 to form a "cross" structure. Positioning grooves 10 are provided on the top and bottom of the inner cavity of the slot 2. The top and bottom surfaces of the transversely inserted square plate 3 are integrally formed with positioning blocks 11. The positioning blocks 11 slide and engage the positioning grooves 10. The transversely inserted square plate 3 is positioned and plugged into the slot 2 through the positioning blocks 11 and the positioning grooves 10, which is convenient for quick installation. The positioning blocks 11 and the positioning grooves 10 are used to limit the transversely inserted square plate to avoid displacement and tilting of the transversely inserted square plate 3 during welding.

[0022] The positioning groove 10 and the positioning block 11 are respectively located on the center line of the slot 2 and the horizontally inserted square plate 3, ensuring that the connecting holes 4 at both ends of the horizontally inserted square plate 3 are symmetrical, so that the forces at both ends of the horizontally inserted square plate 3 are balanced. The outer walls of the special-shaped mainboard 1 on both sides of the slot 2 are integrally formed with a transition edge 12 of a square platform structure, which facilitates a smooth transition between the special-shaped mainboard 1 and the horizontally inserted square plate 3 and facilitates welding.

[0023] The adjustment and limiting mechanism 8 includes an upper side plate 83 and a lower side plate 87. The upper tension hanging point 5 and the lower tension hanging point 6 side walls at the top and bottom of the U-shaped groove 7 are fixedly installed with the upper side plate 83 and the lower side plate 87 respectively. The upper side plate 83 and the lower side plate 87 are respectively provided with an upper connecting groove 84 and a lower connecting groove 86. The inner cavities at both ends of the upper connecting groove 84 and the lower connecting groove 86 are slidably penetrated by the latch 82. The latch 82 is a cylindrical structure. The small diameter end of the latch 82 penetrates the lower connecting groove 86 and is sleeved with a locking nut 88 through a threaded structure. The inner wall of the upper connecting groove 84 is fixedly installed with a fixing tooth 85. The outer wall of the latch 82 near the large diameter end is fixedly installed with a gear ring 81. The gear ring 81 is inserted into the upper connecting groove 8 4 and mesh with the fixing teeth 85, the top angle of the triangular connecting plate is inserted into the U-shaped groove 7 and connected by bolts. At this time, the two pins 82 penetrate the upper connecting groove 84 and the lower connecting groove 86. At this time, the gear ring 81 is separated from the upper connecting groove 84, and the pin 82 can slide along the upper connecting groove 84 and the lower connecting groove 86, which is convenient for adjusting the inclination angle of the triangular connecting plate and making the two pins 82 respectively fit the outer walls on both sides of the top angle of the triangular connecting plate, and then the gear ring 81 is inserted into the upper connecting groove 84, the gear ring 81 meshes with the fixing teeth 85, and the locking nut 88 is threadedly connected with the bottom of the pin 82, and the pin 82 is completely fixed, so that the triangular connecting plate is quickly limited and fixed to prevent the special-shaped main board 1 from shaking.

[0024] Bolt mounting holes are provided on the upper tension hanging point 5 and the lower tension hanging point 6. The upper connecting groove 84 and the lower connecting groove 86 are both arc-shaped structures, and the axes of the upper connecting groove 84 and the lower connecting groove 86 coincide with the bolt mounting holes, so that the pin 82 can slide along the upper connecting groove 84 and the lower connecting groove 86 and fit the side wall of the triangular connecting plate for limiting.

[0025] Working principle: When the present invention is used, the transversely inserted square plate 3 is positioned through the positioning block 11 and the positioning groove 10 to locate the plug-in slot 2 so as to be quickly positioned and installed, which is convenient for quick welding and fixing, so that the transversely inserted square plate 3 and the special-shaped main board 1 are in a cross shape, and the connecting holes 4 at both ends of the transversely inserted square plate 3 can hang insulator strings. The special-shaped main board 1 uses its special shape to form upper tension hanging points 5 and lower tension hanging points 6 at different spatial positions at the lower front and upper rear. Each tension hanging point can be connected to the triangular connecting plate through bolts. The triangular connecting plate is installed in the U-shaped groove 7 through bolts. Two pins 82 penetrate the upper connecting groove 84 and the lower connecting groove 86. At this time, the gear ring 81 is in a separated state from the upper connecting groove 84, and the pin 82 can slide along the upper connecting groove 84 and the lower connecting groove 86, which is convenient for adjusting the inclination angle of the triangular connecting plate. The two pins 82 are respectively fitted to the outer walls on both sides of the top angle of the triangular connecting plate, and then the ring gear 81 is inserted into the upper connecting groove 84, the ring gear 81 meshes with the fixing teeth 85, and the locking nut 88 is threadedly connected to the bottom of the pin 82, and the pin 82 is completely fixed, so as to quickly limit and fix the triangular connecting plate to avoid shaking of the special-shaped main board 1, and the connecting holes at the other two bottom feet of the triangular connecting plate form two lower front horizontal hanging points and two upper rear horizontal hanging points in space, forming a simple tension wire structure, shortening the length of the hardware string, reducing the number of components used, saving materials, and avoiding the cumbersome structure of using a 30-degree angle lead for the drainage line on the ordinary jumper structure and installing a jumper spacer on the extension rod, thereby enhancing the safety and reliability of the operation of the transmission line.

[0026] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special-shaped tension joint plate for a power transmission line, comprising a special-shaped main plate (1), characterized in that: A slot (2) is provided in the middle of one end face of the special-shaped main board (1), a transversely inserted square plate (3) is inserted into the slot (2), and the transversely inserted square plate (3) is welded and fixed to the slot (2), and a plurality of connection holes (4) are provided at both ends of the transversely inserted square plate (3), an upper tension hanging point (5) and a lower tension hanging point (6) are respectively provided at the top of one end and the other end face of the special-shaped main board (1) close to the slot (2), a U-shaped groove (7) is provided in the middle of the upper tension hanging point (5) and the lower tension hanging point (6), and an adjustment limit mechanism (8) is installed on the upper tension hanging point (5) and the lower tension hanging point (6) on both sides of the U-shaped groove (7); The regulating and limiting mechanism (8) comprises an upper side plate (83) and a lower side plate (87); the upper tension hanging point (5) and the lower tension hanging point (6) at the top and bottom of the U-shaped groove (7) are respectively fixedly mounted with the upper side plate (83) and the lower side plate (87); the upper side plate (83) and the lower side plate (87) are respectively provided with an upper connecting groove (84) and a lower connecting groove (86); the inner cavities at both ends of the upper connecting groove (84) and the lower connecting groove (86) are slidably penetrated by a latch (82); the latch (82) is a cylindrical structure; the latch (82) The small diameter end of the screw threaded rod (82) passes through the lower connecting groove (86) and is sleeved with a locking nut (88) through a threaded structure; a fixing tooth (85) is fixedly installed on the inner wall of the upper connecting groove (84); a gear ring (81) is fixedly installed on the outer wall of the screw threaded rod (82) near the large diameter end; the gear ring (81) is inserted into the upper connecting groove (84) and meshes with the fixing tooth (85); the screw threaded rod (82) can slide along the upper connecting groove (84) and the lower connecting groove (86), so as to facilitate the adjustment of the inclination angle of the triangular connecting plate and make the two screw threaded rods (82) respectively fit the outer walls on both sides of the top angle of the triangular connecting plate; The upper tension hanging point (5) and the lower tension hanging point (6) are both provided with bolt mounting holes, the upper connecting groove (84) and the lower connecting groove (86) are both arc-shaped structures, and the axes of the upper connecting groove (84) and the lower connecting groove (86) coincide with the bolt mounting holes.

2. The special-shaped tension joint plate for power transmission lines according to claim 1, characterized in that: The special-shaped main board (1) is an irregular L-shaped structure, and a plurality of weight-reducing holes (9) are provided on the special-shaped main board (1), thereby reducing the overall weight and facilitating overhead wiring.

3. The special-shaped tension joint plate for power transmission lines according to claim 1, characterized in that: The transversely inserted square plate (3) is in an isosceles trapezoidal structure. The transversely inserted square plate (3) is welded to the special-shaped main board (1) to form a "cross"-shaped structure. The inner cavity top and bottom of the slot (2) are both provided with positioning grooves (10). The top and bottom surfaces of the transversely inserted square plate (3) are both integrally formed with positioning blocks (11). The positioning blocks (11) are slidably engaged with the positioning grooves (10).

4. The special-shaped tension joint plate for power transmission lines according to claim 3, characterized in that: The positioning groove (10) and the positioning block (11) are respectively located on the center line of the slot (2) and the transversely inserted square plate (3), and the outer walls of the special-shaped main board (1) on both sides of the slot (2) are integrally formed with transition edges (12) of a square platform structure.

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