Spliced ring main unit and use method thereof

Abstract

The invention discloses a spliced ring main unit and a using method thereof, and relates to the technical field of ring main units, the spliced ring main unit comprises a cabinet body, a stand column is fixedly connected in the cabinet body, a supporting frame is fixedly connected to the stand column, a limiting groove is formed in the inner side of the stand column, and a plurality of strip-shaped holes are uniformly formed in the groove wall of the limiting groove; the supporting frame is fixedly connected with the stand column through a connecting piece, the connecting piece comprises a connecting base, a connecting arm is rotationally connected to the connecting base, a tensioning block is arranged at the end of the connecting arm, the tensioning block is connected with the connecting arm in a sliding mode and fixed through a locking piece, inserting blocks are connected to the two sides of the connecting arm and the two sides of the tensioning block in a sliding mode, and the inserting blocks are inserted into the connecting base. And the inserting blocks are matched with the strip-shaped holes, are tensioned through the tensioning blocks and are used for fixing the connecting pieces. According to the spliced ring main unit and the use method thereof, the installation is convenient, and the installation efficiency is high; meanwhile, the labor intensity is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ring main units, and particularly to a spliced ring main unit and its usage method. Background Art

[0002] A ring main unit is an important power transmission and distribution electrical equipment. It integrates high-voltage switchgear and is installed in a metal or non-metal insulated cabinet to form a spliced compartment type ring main unit for power supply. Its core components are load switches and fuses. These components work together to achieve functions such as separating and combining load currents, interrupting short-circuit currents, and transformer no-load currents, providing reliable control and protection for the power system. The ring main unit has the advantages of simple structure, small volume, low price, reliable and safe power supply, etc., so it is widely used in distribution substations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public facilities, and factories and enterprises.

[0003] During the installation process of the ring main unit, the installation of electrical components is rather inconvenient, which is mainly attributed to the compact structural design of the ring main unit. Due to the limited internal space of the ring main unit, the operating space reserved for the installation of electrical components is very narrow. The current common practice is to first pre-install the electrical components on the mounting frame and then fix them to the columns inside the cabinet through bolts. However, during the installation process, there are still many problems: it is difficult to accurately align the bolt holes, the labor intensity is high, and since a large number of bolts are required for fixation, the installation efficiency is seriously affected.

[0004] Therefore, it is very necessary to propose a spliced ring main unit and its usage method to solve the above problems. Summary of the Invention

[0005] (I) Technical Problems to be Solved The purpose of the present invention is to provide a spliced ring main unit and its usage method to solve the problems raised in the above background art.

[0006] (II) Technical Solutions To achieve the above purposes, the present invention is realized through the following technical solutions: A spliced ring main unit and its usage method, including a cabinet body, wherein a column is fixedly connected inside the cabinet body, a support frame is fixedly connected to the column, a limiting groove is opened inside the column, and a plurality of strip-shaped holes are evenly opened on the groove wall of the limiting groove; The support frame is fixedly connected to the column through a connecting member. The connecting member includes a connecting seat, a connecting arm is rotatably connected to the connecting seat, a tensioning block is provided at the end of the connecting arm, the tensioning block is slidably connected to the connecting arm and fixed through a locking member, and insertion blocks are slidably connected to both sides of the connecting arm and the tensioning block. The insertion blocks are matched with the strip-shaped holes and tightened by the tensioning block for fixing the connecting member.

[0007] Preferably, the insertion block includes a first insertion block and a second insertion block. The first insertion block is slidably connected to the tensioning block. A spring is provided between the two tensioning blocks. Two movable plates are slidably connected to the inner side of the connecting arm. The second insertion block is fixedly connected to one side of the two movable plates away from each other.

[0008] Preferably, inclined surfaces are provided on both sides of the end of the first insertion block along the length direction of the connecting arm.

[0009] Preferably, a pull rod is provided between the two movable plates. Second inclined grooves are provided on one side of the two adjacent movable plates. A second wedge-shaped block is fixedly connected to the position of the pull rod corresponding to the second inclined groove. The pull rod is fixedly connected to the tensioning block.

[0010] Preferably, a first wedge-shaped block is fixedly connected to one end of the movable plate close to the tensioning block. A first inclined groove is provided at the position of the tensioning block corresponding to the first wedge-shaped block.

[0011] Preferably, a plug-in block is fixedly connected to the outside of the connecting seat. A slot adapted to the plug-in block is provided at the end of the support frame.

[0012] Preferably, a support block is fixedly connected to one end of the connecting arm. When the connecting arm is connected to the column, the support block rotates to directly below the connecting seat for supporting the connecting seat.

[0013] Preferably, the locking member is a locking bolt. The locking bolt is rotatably connected to the tensioning block. The locking bolt is threadedly connected to the connecting arm.

[0014] The usage method of the above-mentioned spliced ring main unit includes the following steps: Fix the electrical components on the support frame, and then place the support frame at the preset installation height inside the cabinet; Rotate the connecting arm into the limit groove, and insert the first insertion block into the strip-shaped hole to complete the preliminary positioning of the connecting piece; Rotate the locking bolt so that the first insertion blocks on both sides of the connecting arm abut against the upper end of the strip-shaped hole, and the second insertion blocks on both sides of the tensioning block abut against the lower end of the strip-shaped hole, thereby completing the installation of the support frame.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a spliced ring main unit and its usage method, having the following beneficial effects: 1. For the spliced ring main unit and its usage method, by providing a connecting piece to connect and fix the support frame and the column, the installation of the support frame is made more convenient, improving the installation efficiency.

[0016] 2. The spliced ring main switchgear and its usage method cooperate to install a connecting member and a column by providing a strip-shaped hole and an insertion block, and perform tensioning and fixing through a tensioning block, facilitating the alignment of the insertion block with the strip-shaped hole and preventing the vertical movement of the connecting member. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the structure of the present invention; Figure 2 is a three-dimensional schematic diagram of the support frame of the present invention; Figure 3 is a three-dimensional schematic diagram of the connection state of the connecting member of the present invention; Figure 4 is a sectional schematic diagram of the connection state of the connecting member of the present invention; Figure 5 is a sectional schematic diagram of the connecting arm of the present invention; Figure 6 is a three-dimensional schematic diagram of the connecting member of the present invention; Figure 7 is a cross-sectional schematic diagram of the support frame of the present invention.

[0018] In the figures: 1, cabinet body; 2, column; 3, support frame; 4, connecting member; 6, limit groove; 7, strip-shaped hole; 8, locking bolt; 9, connecting arm; 10, connecting seat; 11, insertion block; 12, slot; 13, tensioning block; 14, pull rod; 15, support block; 16, inclined surface; 17, first insertion block; 18, second insertion block; 19, spring; 21, movable plate; 22, first inclined groove; 23, first wedge-shaped block; 24, second inclined groove; 25, second wedge-shaped block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Please refer to Figure 1-7 As shown, a spliced ring main switchgear and its usage method include a cabinet body 1, a column 2 fixedly connected inside the cabinet body 1, a support frame 3 fixedly connected to the column 2, a limit groove 6 is provided inside the column 2, and a plurality of strip-shaped holes 7 are evenly provided on the groove wall of the limit groove 6; the support frame 3 is fixedly connected to the column 2 through a connecting member 4, the connecting member 4 includes a connecting seat 10, a connecting arm 9 is rotatably connected to the connecting seat 10, a tensioning block 13 is provided at the end of the connecting arm 9, the tensioning block 13 is slidably connected to the connecting arm 9 and fixed by a locking member, insertion blocks are slidably connected to both sides of the connecting arm 9 and the tensioning block 13, the insertion blocks are matched with the strip-shaped holes 7 and tightened by the tensioning block 13 to fix the connecting member 4.

[0021] When installing electrical components, fixedly connect them to the support frame 3, and then place the support frame 3 at the preset installation height in the cabinet body 1. Rotate the connecting arm 9 to make it enter the limiting groove 6, so that the insertion blocks on both sides of the connecting arm 9 and the tensioning block 13 are inserted into the strip-shaped holes 7. Then adjust and lock the height of the tensioning block 13 through the locking member, so that the insertion blocks on both sides of the connecting arm 9 abut against the upper end of the strip-shaped hole 7, and the insertion blocks on both sides of the tensioning block 13 abut against the lower end of the strip-shaped hole 7, thereby connecting and fixing the support frame 3.

[0022] Preferably, the width of the connecting arm 9 is adapted to the width of the limiting groove 6, so as to prevent the connecting arm 9 from swinging left and right; the connecting seat 10 has an end face that fits the column 2 to further improve the stability of its connection.

[0023] In some embodiments, the insertion block includes a first insertion block 17 and a second insertion block 18. The first insertion block 17 is slidably connected to the tensioning block 13. A spring 19 is provided between the two tensioning blocks 13. Two movable plates 21 are slidably connected to the inner side of the connecting arm 9. The second insertion block 18 is fixedly connected to the sides of the two movable plates 21 away from each other. Preferably, there are multiple second insertion blocks 18, and the distance between two adjacent second insertion blocks 18 on the same side is the same as the opening distance of the connecting member 4.

[0024] To facilitate the connection between the connecting member 4 and the limiting groove 6, inclined surfaces 16 are provided on both sides of the end of the first insertion block 17 along the length direction of the connecting arm 9. When the connecting arm 9 is rotated into the limiting groove 6, the groove wall of the limiting groove 6 presses the first insertion block 17 into the tensioning block 13 under the action of the inclined surface 16. When the connecting arm 9 is rotated to the vertical state, the spring 19 pushes the first insertion block 17 out and inserts it into the strip-shaped hole 7, thereby completing the pre-connection of the connecting seat 10, so that it is not necessary to continuously support the support frame 3, reducing the labor intensity and installation difficulty. Preferably, a polygonal sliding groove should be adopted at the sliding connection between the first insertion block 17 and the tensioning block 13 to prevent the first insertion block 17 from rotating, resulting in a change in the position of the inclined surface 16 and affecting the pressing-in of the first insertion block 17.

[0025] To facilitate the extension of the second insertion block 18 from the connecting arm 9, a pull rod 14 is provided between the two movable plates 21. Second inclined grooves 24 are provided on the adjacent sides of the two movable plates 21. The pull rod 14 is fixedly connected with a second wedge-shaped block 25 at a position corresponding to the second inclined groove 24, and the pull rod 14 is fixedly connected to the tensioning block 13. After the first insertion block 17 is inserted into the strip-shaped hole 7, the tensioning block 13 and the connecting arm 9 are relatively slid, and the second wedge-shaped block 25 acts on the second inclined groove 24 on the inner side of the movable plate 21, thereby pushing the two movable plates 21 away from each other, so that the second insertion block 18 extends out of the connecting arm 9.

[0026] To facilitate the control of the contraction of the second insertion block 18, a first wedge block 23 is fixedly connected to one end of the movable plate 21 close to the tensioning block 13, and a first inclined groove 22 is formed at a position corresponding to the first wedge block 23 on the tensioning block 13. When it is necessary to contract the second insertion block 18 into the connecting arm 9, the tensioning block 13 is slid downward. Under the mutual cooperation of the first inclined groove 22 and the first wedge block 23, the two movable plates 21 are pushed to slide towards each other, so that the second insertion block 18 is contracted into the connecting arm 9 to facilitate the disassembly and assembly of the connecting member 4.

[0027] In some embodiments, to facilitate the connection between the support frame 3 and the connecting member 4, a plug-in block 11 is fixedly connected to the outside of the connection seat 10, and a slot 12 adapted to the plug-in block 11 is formed at the end of the support frame 3. During connection, the plug-in block 11 is inserted into the slot 12. Preferably, the support frame 3 and the plug-in block 11 are fixedly connected by bolts. The support frame 3 shown in the drawings only represents its main structure, and partitions and mounting brackets can be fixed on the support frame 3 according to requirements.

[0028] In some embodiments, a support block 15 is fixedly connected to one end of the connecting arm 9. After the connecting arm 9 is connected to the column 2, the support block 15 rotates to directly below the connection seat 10 to support the connection seat 10. By providing the support block 15 to support the connection seat 10, the bearing capacity of the support frame 3 can be further improved.

[0029] In some embodiments, the locking member is a locking bolt 8. The locking bolt 8 is rotatably connected to the tensioning block 13 and is threadedly connected to the connecting arm 9. By providing the locking bolt 8, the distance between the tensioning block 13 and the connecting arm 9 can be controlled to facilitate the installation and fixation of the connecting member 4; at the same time, the second insertion block 18 can be controlled to contract in cooperation with the pull rod 14 and the movable plate 21 to facilitate the fitting installation of the connecting arm 9 and the limiting groove 6.

[0030] The usage method of the above-mentioned spliced ring main switchgear includes the following steps: Fix the electrical components on the support frame 3, and then place the support frame 3 at the preset installation height inside the cabinet body 1; Rotate the connecting arm 9 into the limiting groove 6 and insert the first insertion block 17 into the strip-shaped hole 7 to complete the pre-positioning of the connecting member 4; Rotate the locking bolt 8 so that the first insertion blocks 17 on both sides of the connecting arm 9 abut against the upper end of the strip-shaped hole 7, and the second insertion blocks 18 on both sides of the tensioning block 13 abut against the lower end of the strip-shaped hole 7, thereby completing the installation of the support frame 3.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spliced ​​ring main unit and a method of using the same, comprising a cabinet body (1), wherein a column (2) is fixedly connected inside the cabinet body (1), and a support frame (3) is fixedly connected to the column (2), wherein: A limiting groove (6) is provided on the inner side of the column (2), and a plurality of strip-shaped holes (7) are evenly provided on the groove wall of the limiting groove (6); The support frame (3) is fixedly connected to the column (2) via a connecting member (4); the connecting member (4) comprises a connecting seat (10); a connecting arm (9) is rotatably connected to the connecting seat (10); a tensioning block (13) is provided at the end of the connecting arm (9); the tensioning block (13) is slidably connected to the connecting arm (9) and fixed by a locking member; plug blocks are slidably connected to both sides of the connecting arm (9) and the tensioning block (13); the plug blocks cooperate with the strip-shaped holes (7) and are tightened by the tensioning block (13) to fix the connecting member (4).

2. A spliced ​​ring main unit and a method of using the same according to claim 1, characterized in that: The plug block comprises a first plug block (17) and a second plug block (18); the first plug block (17) is slidably connected to the tension block (13); a spring (19) is provided between the two tension blocks (13); the inner side of the connecting arm (9) is slidably connected to two movable plates (21); and the second plug block (18) is fixedly connected to a side of the two movable plates (21) that is away from each other.

3. A spliced ​​ring main unit and a method of using the same according to claim 1, characterized in that: Inclined surfaces (16) are provided on both sides of the end of the first insert block (17) along the length direction of the connecting arm (9).

4. A spliced ​​ring main unit and a method of using the same according to claim 1, characterized in that: A pull rod (14) is provided between the two movable plates (21), a second inclined groove (24) is provided on adjacent sides of the two movable plates (21), a second wedge block (25) is fixedly connected to a position of the pull rod (14) corresponding to the second inclined groove (24), and the pull rod (14) is fixedly connected to the tension block (13).

5. The spliced ​​ring main unit and the method of using the spliced ​​ring main unit according to claim 1 are characterized in that: One end of the movable plate (21) close to the tensioning block (13) is fixedly connected to a first wedge-shaped block (23), and a first inclined groove (22) is provided at a position of the tensioning block (13) corresponding to the first wedge-shaped block (23).

6. The spliced ​​ring main unit and the method of using the spliced ​​ring main unit according to claim 1 are characterized in that: A plug-in block (11) is fixedly connected to the outer side of the connection seat (10), and a slot (12) matching the plug-in block (11) is provided at the end of the support frame (3).

7. The spliced ​​ring main unit and the method of using the spliced ​​ring main unit according to claim 1 are characterized in that: One end of the connecting arm (9) is fixedly connected to a support block (15); when the connecting arm (9) is connected to the column (2), the support block (15) rotates to the position directly below the connecting seat (10) to support the connecting seat (10).

8. The spliced ​​ring main unit and the method of using the spliced ​​ring main unit according to claim 1 are characterized in that: The locking member is a locking bolt (8), the locking bolt (8) is rotatably connected to the tensioning block (13), and the locking bolt (8) is threadedly connected to the connecting arm (9).

9. A method for using a spliced ​​ring main unit according to any one of claims 1 to 8, characterized in that: The following steps are involved: The electrical components are fixedly mounted on the support frame (3), and then the support frame (3) is placed at a preset installation height in the cabinet (1); The connecting arm (9) is rotated into the limiting groove (6), and the first insert block (17) is inserted into the strip hole (7), thereby completing the pre-positioning of the connecting member (4); The locking bolts (8) are rotated so that the first plug blocks (17) on both sides of the connecting arm (9) abut against the upper ends of the strip holes (7), and the second plug blocks (18) on both sides of the tensioning block (13) abut against the lower ends of the strip holes (7), thereby completing the installation of the support frame (3).

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