A power supply connection device and method for power transformation maintenance

Abstract

The present invention provides a power supply connection device and method for substation maintenance, which relates to the technical field of high-voltage power supply, and comprises a horizontal frame, wherein the structures at both ends of the horizontal frame in the length direction are symmetrically arranged, a plug is inserted into the middle of the horizontal frame, a block is fixedly connected to the lower side of the plug, a mounting tube is fixedly connected to the lower side of the horizontal frame, and the upper end of the mounting tube spans both sides of the block, a cavity for accommodating the block is arranged on the lower side of the middle of the horizontal frame, and guide grooves are arranged on both sides of the cavity in the length direction of the horizontal frame, and springs are arranged inside the guide grooves. The contact between the wiring piece and the high-voltage line is protected by the horizontal frame, and during use, after the plug board is separated from the horizontal frame, the automatic connection between the wiring piece and the high-voltage line can be completed by the spring and the top rod in combination with the flexible strip, and the contact is secondary shielded by the bracket, which can be better suitable for rainy days and is easy to disassemble.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power supply, and in particular to a substation maintenance power supply connection device and method. Background Art

[0002] During the process of substation maintenance and power supply, workers usually use a pole to hang the wires on the high-voltage lines to draw electricity. However, during use, the contact part of the wires and the high-voltage lines is generally exposed. Once it rains or winter rain occurs, it will affect the safety of power supply. Therefore, in order to meet the needs of substation maintenance and power supply, a substation maintenance power supply connection device is designed. Summary of the invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solutions: a substation maintenance power supply connection device, comprising a cross frame, the structures at both ends of the cross frame in the length direction are symmetrically arranged, a plug is inserted into the middle of the cross frame, a block is fixedly connected to the lower side of the plug, a mounting tube is fixedly connected to the lower side of the cross frame, the upper end of the mounting tube spans the two sides of the block, a cavity for accommodating the block is arranged on the lower side of the middle of the cross frame, guide grooves are arranged on both sides of the cavity in the length direction of the cross frame, springs are arranged inside the guide grooves, one end of the spring away from the block is fixedly connected to a push rod, the lower side wall of the cross frame is provided with a plug plate that presses against the push rod and compresses the spring, and a flexible strip is arranged on the other side of the guide groove away from the plug plate;

[0004] A pulling rope is fixedly connected to the lower end of the plug plate, the pulling rope is inserted into the installation tube and includes a pull ring at the end, a support rod is inserted into the interior of the installation tube, and one end of the support rod includes a hook for hooking the pull ring;

[0005] Mounting grooves are downwardly provided at both ends of the cross frame, a card frame is slidably provided inside the mounting groove, a ceramic seat is slidably provided on the side of the card frame toward the stopper, an electric wire is provided on the side of the ceramic seat toward the mounting tube, a vertical plate supporting the electric wire is fixedly connected to the lower side of the cross frame, a wiring piece connected to the electric wire is provided on the other side of the ceramic seat, a second fixing plate for cooperating with the flexible strip is fixedly connected to the upper side of the card frame, and the wiring piece is slidably connected to the inner side wall of the card frame.

[0006] Preferably, the interior of the flexible strip is composed of steel wires and is wrapped with a protective outer layer on the outside, and the steel wires are distributed in an array inside the protective outer layer.

[0007] Preferably, a rubber sleeve is provided on the outer side of one end of the support rod for fixing the hook, and mutually matching threads are provided on the outer side of the other end of the support rod away from the hook and on the inner side of the lower part of the mounting tube.

[0008] Preferably, the upper inner wall of the mounting tube is provided with an inclined groove, the lower side of the stopper is fixedly connected with an inclined plate located between the upper parts of the mounting tube, the end of the inclined plate away from the stopper includes a hook hole, and the inclined plate is consistent with the inclined groove in inclination direction.

[0009] Preferably, both ends of the cross frame are bent downward, and a swing plate is rotatably connected to the side wall at the bend, and torsion springs are provided at both ends of the swing plate in the axial direction, and the upper end of the swing plate is fixedly connected to a first fixed plate, and the inside of the mounting groove is fixedly connected to a side block that presses against the first fixed plate so that the swing plate overcomes the force of the torsion spring and enters the side wall at the bend of the cross frame, and the side block spans the swing plate by 1-1.5mm.

[0010] Preferably, the bracket is C-shaped, and a wave mouth is provided on the inner side away from the ceramic seat.

[0011] Preferably, the mounting groove is provided with second sliding grooves at the parallel side walls on both sides of the card frame, two balls are provided on both side surfaces of the card frame, and the card frame and the mounting groove cooperate with the second sliding grooves through the balls.

[0012] Preferably, the cross frame has four rain leakage grooves penetrating in the up-down direction, and the rain leakage grooves are located on both sides of the spring and on both sides of the stopper.

[0013] Preferably, as an alternative to directly connecting the wire to the wiring piece, a wiring terminal is provided inside the ceramic base, and the wiring terminal is connected to the wire.

[0014] A method for connecting power supply for maintenance of a substation, using the above-mentioned power supply connection device for maintenance of a substation, comprises the following steps:

[0015] During initial use, one end of the support rod connecting hook is located in the installation tube and hooks the pull ring connected to the pulling rope. When in use, the support rod is erected, and the cross frame is passed through the gap between the high-voltage lines, and then rotated 90 degrees to place the cross frame on the high-voltage lines. After pulling the support rod downward, the support rod is pulled by the hook, and then the hook pulls the pulling rope to separate the plug plate from the cross frame, and then the spring elastic recovery pushes the top rod to move the flexible strip in the guide groove, and then the end of the flexible strip away from the top rod pushes the second fixed plate to cause the bracket to move obliquely, so that the wiring piece is in contact.

[0016] The present invention provides a substation maintenance power supply connection device and method. It has the following beneficial effects:

[0017] 1. In the present invention, the contact point between the wiring piece and the high-voltage line is protected by a cross frame, and during use, after the plug board is separated from the cross frame, the wiring piece and the high-voltage line can be automatically connected by the spring and the top rod in conjunction with the flexible strip, and the contact point is secondary shielded by the bracket, which can be better suitable for rainy days and is easy to disassemble. It is very convenient for long-term or short-term power supply, for example, as a temporary power supply after the high-voltage power is restored in the disaster area.

[0018] 2. In the present invention, the high-voltage line is clamped by the cooperation of the swing plate and the bracket, thereby improving the stability of the substation maintenance power supply connection device on the high-voltage line, and the bracket contacts the high-voltage line to press the high-voltage line down, which is manifested as the upward movement of the bracket relative to the high-voltage line, and then further sliding to make the wiring piece contact with the high-voltage line. During the process, the swing plate rotates into the inner side of the bracket to wrap the high-voltage line. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention from another viewing angle after the support rod is removed;

[0021] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 It is a structural schematic diagram of the swing plate and the bracket in the present invention;

[0023] Figure 5 A top view of the present invention;

[0024] Figure 6 for Figure 2 The corresponding side view;

[0025] Figure 7 It is a partial schematic diagram of a longitudinal section of the middle part of the cross frame width direction of the present invention.

[0026] Among them, 1. horizontal frame; 2. vertical plate; 3. wiring piece; 4. bracket; 5. fixing tube; 6. electric wire; 7. rubber sleeve; 8. hook; 9. support rod; 10. installation tube; 11. plug; 12. block; 13. inclined plate; 14. inclined groove; 15. plug plate; 17. pulling rope; 18. ceramic seat; 19. first slide groove; 20. swing plate; 21. first fixed plate; 22. side block; 23. second fixed plate; 24. flexible strip; 25. second slide groove; 26. push rod; 27. spring. DETAILED DESCRIPTION

[0027] 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.

[0028] Embodiment 1:

[0029] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides a substation maintenance power supply connection device, including a horizontal frame 1, the structures of the two ends of the horizontal frame 1 in the length direction are symmetrically arranged and bent downward at both ends, a plug 11 is inserted into the middle of the horizontal frame 1, a block 12 is fixedly connected to the lower side of the plug 11, and an anti-slip sleeve made of rubber material is fixedly connected to the outer side of the plug 11. When the plug 11 is installed with the horizontal frame 1, the anti-slip sleeve contacts with the horizontal frame 1, and the friction between the plug 11 and the horizontal frame 1 is increased by the anti-slip sleeve, so that the block 12 is in a suspended state, and a cavity for accommodating the block 12 is arranged on the lower side of the middle part of the horizontal frame 1, and the cavity is open downward, and the block 12 can be separated from the horizontal frame 1 downward from the horizontal frame 1;

[0030] The lower side surface of the middle part of the cross frame 1 is fixedly connected with a mounting tube 10, and the upper end of the mounting tube 10 spans over the two sides of the stopper 12, that is, the upper part of the mounting tube 10 includes two side plates fixedly connected to the cross frame 1, and the stopper 12 is located between the two side plates. Guide grooves are provided at both sides of the cavity in the length direction of the cross frame 1. In the above, the guide grooves are in a connected state with the cavity, and springs 27 are provided inside the guide grooves. The end of the spring 27 away from the stopper 12 is fixedly connected with a push rod 26, and the lower side wall of the cross frame 1 is provided with a plug plate 15 that resists the push rod 26 and keeps the spring 27 in a compressed state. The guide groove is provided with a flexible strip 24 on the other side away from the plug plate 15. In the above, the interior of the flexible strip 24 is composed of steel wires and is wrapped with a protective outer layer on the outside. The steel wires are distributed in an array in the protective outer layer. The two ends of the steel wires corresponding to the flexible strip 24 are wrapped by the protective outer layer, that is, the steel wires are wrapped inside by the rubber outer layer. The above-mentioned steel wires are arranged in a square array or a circular array. The diameter of the steel wires used is 0.5-1mm. The protective outer layer is flat at both ends of the corresponding steel wires. The protective outer layer is made of any one of PVC, PE, PUR, and TPE, and the outer side of the protective outer layer is processed into a smooth surface to facilitate the flexible strip 24 to move in the guide groove. Here, the inner wall of the guide groove can be polished into a smooth surface;

[0031] A pulling rope 17 is fixedly connected to the lower end of the plug board 15. The pulling rope 17 passes through the installation tube 10 and includes a pull ring at the end. A support rod 9 is inserted into the interior of the installation tube 10. One end of the support rod 9 includes a hook 8 for hooking the pull ring. After the hook 8 is pulled through the support rod 9, the hook 8 will pull the pulling rope 17, so that the plug board 15 slides down and out of the horizontal frame 1, and then the spring 27 recovers its deformation and applies a thrust to the push rod 26, so that the push rod 26 pushes the flexible strip 24 to move along the guide groove. The guide groove includes a horizontal portion at a side close to the plug board 15 away from the spring 27, so that the push rod 26 can extend into the horizontal portion to push the flexible strip 24.

[0032] Mounting grooves are downwardly provided at both ends of the cross frame 1, and a card frame 4 is slidably provided inside the mounting grooves, that is, the mounting grooves are provided with second slide grooves 25 at the parallel side walls on both sides of the card frame 4, and two ball bearings are provided on both sides of the card frame 4, and the card frame 4 cooperates with the mounting grooves through the ball bearings and the second slide grooves 25. A ceramic seat 18 is slidably provided on the side of the card frame 4 facing the block 12, that is, a first slide groove 19 is provided on the side of the card frame 4 facing the block 12, and a ceramic seat 18 is slidably provided in the first slide groove 19, and an electric wire 6 is provided on the side of the ceramic seat 18 facing the mounting cylinder 10, and a vertical plate 2 supporting the electric wire 6 is fixedly connected to the lower side of the cross frame 1, and the vertical plate 2 includes a fixed cylinder 5, and the electric wire 6 is specifically supported and fixed by the fixed cylinder 5, one end of the electric wire 6 is pulled to the ground for power supply, and the other end is in a relaxed state on the side close to the ceramic seat 18.

[0033] A connecting piece 3 connected to the wire 6 is disposed on the other side of the ceramic seat 18 . A second fixing plate 23 for cooperating with the flexible strip 24 is fixedly connected to the upper side of the card frame 4 . The connecting piece 3 is slidably connected to the inner side wall of the card frame 4 .

[0034] A rubber sleeve 7 is provided on the outside of one end of the support rod 9 that fixes the hook 8 , and threads that cooperate with each other are provided on the outside of the other end of the support rod 9 that is away from the hook 8 and the inside of the lower part of the installation tube 10 .

[0035] The upper inner wall of the mounting tube 10 is provided with an inclined groove 14 , and the lower side of the stopper 12 is fixedly connected with an inclined plate 13 located between the upper parts of the mounting tube 10 . The end of the inclined plate 13 away from the stopper 12 includes a hook hole, and the inclined plate 13 and the inclined groove 14 are inclined in the same direction.

[0036] The horizontal frame 1 is penetrated with four rain leakage grooves in the up-down direction. The rain leakage grooves are located on both sides of the spring 27 and on both sides of the stopper 12. The rain leakage grooves facilitate the downward flow of rainwater.

[0037] In the above, the cross frame 1, the bracket 4, the mounting tube 10, the vertical plate 2, the fixed tube 5, the plug 11, the block 12, the inclined plate 13, the plug plate 15, and the second fixed plate 23 are all processed by 3D printing or injection molding. Specifically, the bracket 4 and the second fixed plate 23, the cross frame 1, the mounting tube 10, the fixed tube 5 and the vertical plate 2, the plug 11, the block 12 and the inclined plate 13 are processed in a combined manner, and the others are processed separately.

[0038] A method for maintaining a power supply connection device for a power transformer comprises the following steps:

[0039] When the lever 9 is in use, one end of the lever 9 connected to the hook 8 is located in the installation tube 10 and hooks the pull ring connected to the pulling rope 17. When in use, the lever 9 is erected and the cross frame 1 passes through the gap between the high-voltage lines and then rotated 90 degrees to place the cross frame 1 on the high-voltage line. After pulling the lever 9 downward, the lever 9 is pulled by the hook 8, and then the hook 8 pulls the pulling rope 17 to separate the plug plate 15 from the cross frame 1, and then the spring 27 elastically recovers and pushes the push rod 26 to make the flexible strip 24 move in the guide groove, and then the end of the flexible strip 24 away from the push rod 26 pushes the second fixed plate 23 to make the bracket 4 move obliquely, so that the wiring piece 3 is in contact, and then high-voltage power can be taken. When the substation maintenance power supply connection device is not in use, first use the end of the lever 9 with the hook 8 to pull the inclined plate 13, so that the plug block 11 and the stopper 12 are separated from the cross frame 1, and the other end of the lever 9 is threadedly installed into the installation tube 10. After the substation maintenance power supply connection device is rotated, it can be removed from the high-voltage line.

[0040] Embodiment 2:

[0041] The difference between this embodiment and the first embodiment is that: the side walls at the bends at both ends of the horizontal frame 1 are rotatably connected with the swing plate 20, that is, the side walls at the bends at both ends of the horizontal frame 1 are provided with side grooves for accommodating the swing plate 20, and torsion springs are provided at both ends of the axial direction of the swing plate 20. The upper end of the swing plate 20 is fixedly connected with a first fixed plate 21, and the inside of the mounting groove is fixedly connected with a side block 22 that presses against the first fixed plate 21 so that the swing plate 20 overcomes the force of the torsion spring and enters the side wall at the bend of the horizontal frame 1. The length of the side block 22 spanning and clasping the swing plate 20 is 1-1.5mm, and the swing plate 20 and the first fixed plate 21 are integrated by printing or injection molding. The side block 22 is bonded and fixed to the cross frame 1. The bracket 4 is C-shaped and has a wave mouth on the side away from the ceramic seat 18. When the bracket 4 is pushed by the flexible strip 24, the end of the bracket 4 hits the first fixed plate 21. During the process, the side block 22 and the first fixed plate 21 are in a separated state. In this way, the torsion spring can rotate the swing plate 20 toward the high-voltage line, and then cooperate with the bracket 4 to clamp the high-voltage line. The above-mentioned side block 22 and the first fixed plate 21 are in a separated state, and the separation is achieved through the deformation of the two, or as a disposable design, the side block 22 is broken by the first fixed plate 21.

[0042] Embodiment three:

[0043] This embodiment is an alternative to directly connecting the wires to the wiring piece. Specifically, a wiring terminal is provided inside the ceramic seat 18, and the wiring terminal is connected to 6.

[0044] 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 substation maintenance power supply connection device, comprising a horizontal frame (1), wherein the structures at both ends of the horizontal frame (1) are symmetrically arranged in the length direction, a plug (11) is inserted into the middle of the horizontal frame (1), a stopper (12) is fixedly connected to the lower side of the plug (11), and a mounting tube (10) is fixedly connected to the lower side of the horizontal frame (1), and the upper end of the mounting tube (10) spans over the two sides of the stopper (12), characterized in that: A cavity for accommodating a stopper (12) is provided at the lower middle side of the cross frame (1), guide grooves are provided on both sides of the cavity in the length direction of the cross frame (1), springs (27) are provided inside the guide grooves, one end of the spring (27) away from the stopper (12) is fixedly connected to a push rod (26), a plug plate (15) is provided on the lower side wall of the cross frame (1) for resisting against the push rod (26) and keeping the spring (27) in a compressed state, and a flexible strip (24) is provided on the other side of the guide groove away from the plug plate (15); The lower end of the plug plate (15) is fixedly connected to a pulling rope (17), the pulling rope (17) is inserted into the installation tube (10) and includes a pull ring at the end, a support rod (9) is inserted into the interior of the installation tube (10), one end of the support rod (9) includes a hook (8) for hooking the pull ring, and the outer side of the other end of the support rod (9) away from the hook (8) and the inner side of the lower part of the installation tube (10) are provided with mutually matching threads; Both ends of the cross frame (1) are downwardly provided with mounting grooves, a card frame (4) is slidably provided inside the mounting groove, a ceramic seat (18) is slidably provided on the side of the card frame (4) facing the stopper (12), a wire (6) is provided on the side of the ceramic seat (18) facing the mounting cylinder (10), a vertical plate (2) supporting the wire (6) is fixedly connected to the lower side of the cross frame (1), a wiring piece (3) connected to the wire (6) is provided on the other side of the ceramic seat (18), a second fixing plate (23) for cooperating with the flexible strip (24) is fixedly connected to the upper side of the card frame (4), and the wiring piece (3) is slidably connected to the inner side wall of the card frame (4); The upper inner wall of the installation cylinder (10) is provided with an inclined groove (14); the lower side surface of the stopper (12) is fixedly connected with an inclined plate (13) located between the upper parts of the installation cylinder (10); one end of the inclined plate (13) away from the stopper (12) comprises a hook hole; the inclined plate (13) and the inclined groove (14) have the same inclination direction.

2. A substation maintenance power supply connection device according to claim 1, characterized in that: The interior of the flexible strip (24) is composed of steel wires and is wrapped with a protective outer layer on the outside, wherein the steel wires are distributed in an array in the protective outer layer.

3. A substation maintenance power supply connection device according to claim 2, characterized in that: The support rod (9) is provided with a rubber sleeve (7) on the outer side of one end of the fixing hook (8).

4. A substation maintenance power supply connection device according to claim 3, characterized in that: The two ends of the cross frame (1) are bent downward, and a swing plate (20) is rotatably connected to the side wall at the bend. Torsion springs are provided at both ends of the swing plate (20) in the axial direction. The upper end of the swing plate (20) is fixedly connected to a first fixing plate (21). The inside of the mounting groove is fixedly connected to a side block (22) that presses against the first fixing plate (21) so that the swing plate (20) overcomes the force of the torsion spring and enters the side wall at the bend of the cross frame (1). The side block (22) spans the swing plate (20) by 1-1.5 mm.

5. A substation maintenance power supply connection device according to claim 4, characterized in that: The card frame (4) is C-shaped, and a wave mouth is provided on the inner side away from the ceramic seat (18).

6. A substation maintenance power supply connection device according to claim 5, characterized in that: The mounting groove is provided with second slide grooves (25) at parallel side walls on both sides of the bracket (4), two balls are provided on both side surfaces of the bracket (4), and the bracket (4) and the mounting groove are matched with the second slide grooves (25) via the balls.

7. A substation maintenance power supply connection device according to claim 6, characterized in that: The cross frame (1) has four rain leakage grooves extending through it in the up-down direction. The rain leakage grooves are located on both sides of the spring (27) and on both sides of the stopper (12).

8. A substation maintenance power supply connection device according to claim 7, characterized in that: As an alternative to directly connecting the wire (6) to the terminal lug (3), a terminal is provided inside the ceramic base (18), and the terminal is connected to the wire (6).

9. A method for connecting power supply for maintenance of substation, using the device for connecting power supply for maintenance of substation according to claim 8, characterized in that: The steps include: During initial use, one end of the support rod (9) connected to the hook (8) is located in the installation tube (10) and hooks the pull ring connected to the pulling rope (17). During use, the support rod (9) is erected, and the cross frame (1) is passed through the gap between the high-voltage lines, and then rotated 90 degrees so that the cross frame (1) is placed on the high-voltage lines. After the support rod (9) is pulled downward, the support rod (9) is pulled by the hook (8), and then the hook (8) pulls the pulling rope (17) to separate the plug plate (15) from the cross frame (1), and then the spring (27) elastically recovers and pushes the top rod (26) to move the flexible strip (24) in the guide groove, and then the end of the flexible strip (24) away from the top rod (26) pushes the second fixing plate (23) to cause the bracket (4) to move obliquely, so that the wiring piece (3) is in a contact state.

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