A mechanical locking device for main switch and ground switch of double busbar disconnector

Abstract

The present invention relates to a mechanical locking device for realizing the main switch and ground switch of a double busbar disconnecting switch, comprising a first column, a second column and a base, wherein a first support plate is arranged on the upper side of the first column, a second support plate is arranged on the upper side of the second column, a ground switch rotating rod is arranged between the first support plate and the second support plate, a main locking plate and a slave locking plate are arranged on the ground switch rotating rod, a blocking rod is arranged on the side of the slave locking plate, a horizontal connecting rod is connected to the lower side of the main locking plate, a locking plate is connected to the other end of the horizontal connecting rod, a third column is arranged on the upper side of the base, a disc is arranged on the upper side of the third column, a fixing plate is arranged on the upper side of the disc, and the locking plate is connected to the fixing plate by a third bolt and a fourth bolt; the present invention has the advantages of reasonable structure, reliable operation and high safety.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer substation auxiliary equipment, and in particular relates to a mechanical locking device for realizing a main switch and a ground switch of a double busbar disconnecting switch. Background Art

[0002] The isolating switch is a switching device mainly used for "isolating power supply and switching operation". Its working principle and structure are relatively simple. However, due to its large usage and high working reliability requirements, it has a great impact on the safety of substations. At present, in substations, it is generally only possible to lock the hidden dangers of misoperation of single-bus isolating switches. There is no special device for the locking device of double-bus isolating switches. Therefore, it is very necessary to provide a mechanical locking device for the main switch and ground switch of double-bus isolating switches with reasonable structure, reliable operation and high safety. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a mechanical locking device for the main switch and ground switch of a double busbar disconnector which has a reasonable structure, reliable operation and high safety.

[0004] The objective of the present invention is achieved in this way: a mechanical locking device for the main switch and ground switch of a double busbar disconnector, comprising a first column, a second column, and a base, a first support plate is arranged on the upper side of the first column, a second support plate is arranged on the upper side of the second column, a ground switch rotating rod is arranged between the first support plate and the second support plate, a main locking plate and a slave locking plate are arranged on the ground switch rotating rod, a baffle is arranged on the side of the slave locking plate, a horizontal connecting rod is connected to the lower side of the main locking plate, a locking plate is connected to the other end of the horizontal connecting rod, a third column is arranged on the upper side of the base, a disc is arranged on the upper side of the third column, a fixing plate is arranged on the upper side of the disc, and the locking plate is connected to the fixing plate by a third bolt and a fourth bolt.

[0005] An eighth through hole is provided on the upper part of the slave locking plate, and the eighth through hole is a circular hole. The ground knife rotating rod passes through the eighth through hole and is fixedly connected to the slave locking plate. The connection between the slave locking plate and the ground knife rotating rod is welding, and the blocking rod provided on the slave locking plate is a cylindrical blocking rod.

[0006] A sixth through hole is provided at the upper portion of the main locking plate, and a seventh through hole is provided at the lower portion of the main locking plate. The sixth through hole and the seventh through hole are circular through holes respectively. The ground knife rotating rod passes through the sixth through hole and is connected to the main locking plate. The ground knife rotating rod and the main locking plate are connected in a hinged manner.

[0007] The main locking plate is connected to the horizontal connecting rod via a first bolt, and the first bolt passes through a seventh through hole provided on the main locking plate.

[0008] The horizontal connecting rod is connected to the locking plate through a second bolt, the middle and lower parts of the second bolt are respectively provided with a first locking nut and a second locking nut, the left part of the locking plate is provided with a first through hole, and the second bolt passes through the first through hole.

[0009] An arc portion is provided on the right side of the locking plate, and a fourth through hole and a fifth through hole are provided on the arc portion, and the fourth through hole and the fifth through hole are circular through holes respectively. The fixing plate is a circular fixing plate, and a second through hole and a third through hole are provided on the fixing plate, and the third through hole is a long strip through hole. The locking plate and the fixing plate are connected by a third bolt and a fourth bolt, and the third bolt passes through the fourth through hole, and the fourth bolt passes through the fifth through hole.

[0010] The fixing plate and the disc are connected via a fifth bolt, and the fifth bolt passes through the second through hole.

[0011] The disc and the third column are connected by welding, and the base is fixed on the ground.

[0012] The beneficial effects of the present invention are as follows: the present invention adopts a main locking plate and a slave locking plate, the main locking plate is connected with a horizontal connecting rod, the horizontal connecting rod is connected with a locking plate, the locking plate is fixed on the fixed plate, and since the slave locking plate is fixedly connected with the ground knife rotating rod, the position of the main locking plate limits the slave locking plate through the shift rod, thereby limiting the rotation of the ground knife rotating rod, thereby realizing locking; when the ground knife rotating rod needs to be grounded, after confirming that the isolating switch has been disconnected, the third bolt and the fourth bolt arranged between the fixed plate and the locking plate are unscrewed, so that the main locking plate can be rotated, thereby adjusting the ground knife rotating rod for grounding operation; the present invention complies with the safe assembly principle of power equipment, and solves the long-term hidden danger of misoperation that the double bus isolating switch can only lock the single bus isolating switch; the present invention has the advantages of reasonable structure, reliable operation and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a front view of a mechanical locking device for a main switch and a ground switch of a double busbar disconnector.

[0014] Figure 2 The present invention is a side view of a mechanical locking device for a main switch and a ground switch of a double busbar disconnector.

[0015] Figure 3 The present invention is a partial structural schematic diagram of a device for realizing a mechanical locking device for a main switch and a ground switch of a double busbar disconnector.

[0016] Figure 4The present invention is a top view of the local structure of a device for realizing a mechanical locking of a main switch and a ground switch of a double busbar disconnector.

[0017] Figure 5 The present invention is a structural schematic diagram of a fixing plate for realizing a mechanical locking device for a main switch and a ground switch of a double busbar disconnector.

[0018] Figure 6 The present invention is a structural schematic diagram of a locking plate of a mechanical locking device for a main switch and a ground switch of a double busbar disconnector.

[0019] Figure 7 The present invention is a structural schematic diagram of a main locking plate for realizing a mechanical locking device for a main switch and a ground switch of a double busbar disconnector.

[0020] Figure 8 The present invention is a schematic structural diagram of a slave locking plate for realizing a mechanical locking device for a main switch and a ground switch of a double busbar disconnector.

[0021] In the figure: 1, the first column 2, the first support plate 3, the ground knife rotating rod 4, the main locking plate 5, the secondary locking plate 6, the blocking rod 7, the first bolt 8, the horizontal connecting rod 9, the second support plate 10, the second column 11, the locking plate 12, the third column 13, the base 14, the second bolt 15, the first locking nut 16, the second locking nut 17, the third bolt 18, the fourth bolt 19, the fixing plate 20, the fifth bolt 21, the disk 22, the first through hole 23, the second through hole 24, the third through hole 25, the fourth through hole 26, the arc portion 27, the fifth through hole 28, the sixth through hole 29, the seventh through hole 30, and the eighth through hole. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Example 1

[0024] like Figure 1-8As shown, a mechanical locking device for the main switch and ground switch of a double busbar disconnector is provided, which comprises a first column 1, a second column 10, and a base 13. A first support plate 2 is arranged on the upper side of the first column 1, a second support plate 9 is arranged on the upper side of the second column 10, a ground switch rotating rod 3 is arranged between the first support plate 2 and the second support plate 9, a main locking plate 4 and a slave locking plate 5 are arranged on the ground switch rotating rod 3, a blocking rod 6 is arranged on the side of the slave locking plate 5, a horizontal connecting rod 8 is connected to the lower side of the main locking plate 5, and a locking plate 11 is connected to the other end of the horizontal connecting rod 8, a third column 12 is arranged on the upper side of the base 13, a disc 21 is arranged on the upper side of the third column 12, a fixing plate 19 is arranged on the upper side of the disc 21, and the locking plate 11 is connected to the fixing plate 19 by a third bolt 17 and a fourth bolt 18.

[0025] An eighth through hole 30 is provided on the upper portion of the slave locking plate 5, and the eighth through hole 30 is a circular hole. The ground knife rotating rod 3 passes through the eighth through hole 30 and is fixedly connected to the slave locking plate 5. The connection between the slave locking plate 5 and the ground knife rotating rod 3 is welding, and the blocking rod 6 provided on the slave locking plate 5 is a cylindrical blocking rod.

[0026] The present invention adopts a main locking plate 4 and a slave locking plate 5. The main locking plate 4 is connected with a horizontal connecting rod 8. The horizontal connecting rod 8 is connected with a locking plate 11. The locking plate 11 is fixed on a fixed plate 19. Since the slave locking plate 5 is fixedly connected to the ground knife rotating rod 3, the position of the main locking plate 4 is limited by the shift rod 6 to limit the slave locking plate 5, thereby limiting the rotation of the ground knife rotating rod 3, thereby achieving locking; when the ground knife rotating rod 3 needs to be grounded, after confirming that the disconnector has been disconnected, the third bolt 17 and the fourth bolt 18 arranged between the fixed plate 19 and the locking plate 11 are unscrewed, so that the main locking plate 4 can be rotated, thereby adjusting the ground knife rotating rod 3 for grounding operation; the present invention complies with the safe assembly principle of power equipment, and solves the long-term misoperation risk that the double bus disconnector can only lock the single bus disconnector; the present invention has the advantages of reasonable structure, reliable operation and high safety.

[0027] Example 2

[0028] like Figure 1-8As shown, a mechanical locking device for the main switch and ground switch of a double busbar disconnector is provided, which comprises a first column 1, a second column 10, and a base 13. A first support plate 2 is arranged on the upper side of the first column 1, a second support plate 9 is arranged on the upper side of the second column 10, a ground switch rotating rod 3 is arranged between the first support plate 2 and the second support plate 9, a main locking plate 4 and a slave locking plate 5 are arranged on the ground switch rotating rod 3, a blocking rod 6 is arranged on the side of the slave locking plate 5, a horizontal connecting rod 8 is connected to the lower side of the main locking plate 5, and a locking plate 11 is connected to the other end of the horizontal connecting rod 8, a third column 12 is arranged on the upper side of the base 13, a disc 21 is arranged on the upper side of the third column 12, a fixing plate 19 is arranged on the upper side of the disc 21, and the locking plate 11 is connected to the fixing plate 19 by a third bolt 17 and a fourth bolt 18.

[0029] For better effect, an eighth through hole 30 is provided on the upper part of the locking plate 5, and the eighth through hole 30 is a circular hole. The ground knife rotating rod 3 passes through the eighth through hole 30 and is fixedly connected with the locking plate 5. The connection method between the locking plate 5 and the ground knife rotating rod 3 is welding, and the blocking rod 6 set on the locking plate 5 is a cylindrical blocking rod.

[0030] For better effect, a sixth through hole 28 is provided at the upper part of the main locking plate 4, and a seventh through hole 29 is provided at the lower part of the main locking plate 4. The sixth through hole 28 and the seventh through hole 29 are circular through holes respectively. The ground knife rotating rod 3 is connected to the main locking plate 4 through the sixth through hole 28, and the connection method of the ground knife rotating rod 3 and the main locking plate 4 is hinged.

[0031] For better effect, the main locking plate 4 is connected to the horizontal connecting rod 8 via a first bolt 7 , and the first bolt 7 passes through a seventh through hole 29 provided on the main locking plate 4 .

[0032] For better effect, the horizontal connecting rod 8 is connected to the locking plate 11 through the second bolt 14, and the first locking nut 15 and the second locking nut 16 are respectively provided at the middle and lower parts of the second bolt 14. The left part of the locking plate 11 is provided with a first through hole 22, and the second bolt 14 passes through the first through hole 22.

[0033] For better effect, an arc portion 26 is provided on the right side of the locking plate 11, and a fourth through hole 25 and a fifth through hole 27 are provided on the arc portion 26. The fourth through hole 25 and the fifth through hole 27 are circular through holes respectively. The fixing plate 19 is a circular fixing plate, and a second through hole 23 and a third through hole 24 are provided on the fixing plate 19. The third through hole 24 is a long strip through hole. The locking plate 11 and the fixing plate 19 are connected by a third bolt 17 and a fourth bolt 18. The third bolt 17 passes through the fourth through hole 25, and the fourth bolt 18 passes through the fifth through hole 27.

[0034] For better effect, the fixing plate 19 and the disc 21 are connected by a fifth bolt 20 , and the fifth bolt 20 passes through the second through hole 23 .

[0035] For better effect, the connection between the disc 21 and the third column 12 is welding, and the base 13 is fixed on the ground. The base 13 is fixed to the ground by anchor bolts, and the base 13 can also be fixed to the ground by concrete pouring.

[0036] The present invention adopts a main locking plate 4 and a slave locking plate 5. The main locking plate 4 is connected with a horizontal connecting rod 8. The horizontal connecting rod 8 is connected with a locking plate 11. The locking plate 11 is fixed on a fixed plate 19. Since the slave locking plate 5 is fixedly connected to the ground knife rotating rod 3, the position of the main locking plate 4 is limited by the shift rod 6 to limit the slave locking plate 5, thereby limiting the rotation of the ground knife rotating rod 3, thereby achieving locking; when the ground knife rotating rod 3 needs to be grounded, after confirming that the disconnector has been disconnected, the third bolt 17 and the fourth bolt 18 arranged between the fixed plate 19 and the locking plate 11 are unscrewed, so that the main locking plate 4 can be rotated, thereby adjusting the ground knife rotating rod 3 for grounding operation; the present invention complies with the safe assembly principle of power equipment, and solves the long-term misoperation risk that the double bus disconnector can only lock the single bus disconnector; the present invention has the advantages of reasonable structure, reliable operation and high safety.

Claims

1. A mechanical locking device for a main switch and a ground switch of a double busbar disconnector, comprising a first column, a second column, and a base, characterized in that: A first support plate is arranged on the upper side of the first column, a second support plate is arranged on the upper side of the second column, a ground knife rotating rod is arranged between the first support plate and the second support plate, a main locking plate and a slave locking plate are arranged on the ground knife rotating rod, a blocking rod is arranged on the side of the slave locking plate, a horizontal connecting rod is connected to the lower side of the main locking plate, and a locking plate is connected to the other end of the horizontal connecting rod, a third column is arranged on the upper side of the third column, a disc is arranged on the upper side of the disc, and a fixing plate is arranged on the upper side of the disc, and the locking plate is connected to the fixing plate by a third bolt and a fourth bolt; An eighth through hole is provided on the upper part of the slave locking plate, and the eighth through hole is a circular hole. The ground knife rotating rod passes through the eighth through hole and is fixedly connected to the slave locking plate. The connection between the slave locking plate and the ground knife rotating rod is welding, and the blocking rod provided on the slave locking plate is a cylindrical blocking rod; The upper part of the main locking plate is provided with a sixth through hole, the lower part of the main locking plate is provided with a seventh through hole, the sixth through hole and the seventh through hole are circular through holes respectively, the ground knife rotating rod passes through the sixth through hole and is connected to the main locking plate, and the ground knife rotating rod is connected to the main locking plate in a hinged manner; The main locking plate and the horizontal connecting rod are connected by a first bolt, and the first bolt passes through a seventh through hole provided on the main locking plate; The horizontal connecting rod is connected to the locking plate through a second bolt, the middle and lower parts of the second bolt are respectively provided with a first locking nut and a second locking nut, the left part of the locking plate is provided with a first through hole, and the second bolt passes through the first through hole; An arc portion is provided on the right side of the locking plate, and a fourth through hole and a fifth through hole are provided on the arc portion, and the fourth through hole and the fifth through hole are circular through holes respectively. The fixing plate is a circular fixing plate, and a second through hole and a third through hole are provided on the fixing plate, and the third through hole is a long strip through hole. The locking plate and the fixing plate are connected by a third bolt and a fourth bolt, and the third bolt passes through the fourth through hole, and the fourth bolt passes through the fifth through hole.

2. A mechanical locking device for main switch and ground switch of a double busbar disconnector according to claim 1, characterized in that: The fixing plate and the disc are connected via a fifth bolt, and the fifth bolt passes through the second through hole.

3. A mechanical locking device for main switch and ground switch of a double busbar disconnector according to claim 1, characterized in that: The disc and the third column are connected by welding, and the base is fixed on the ground.

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