A substation grounding wire locking device and a method of using the same

Abstract

This invention discloses a substation grounding wire interlocking device and its usage method. The main body includes a linkage housing, with a grounding wire screw fixedly installed at the top of the linkage housing. A conductor access port is provided on one side of the linkage housing, and a conductor connecting rod is provided inside the conductor access port. A mechanical lock is provided on the inner wall of the conductor access port. A first keyhole, a second keyhole, and a five-proof electrical code are provided on the other side of the linkage housing. The mechanical locks are connected to each other through an unlocking connecting rod. The other end of the unlocking connecting rod extends to the inside of the second keyhole. A chain fulcrum spring is provided on one side of the conductor connecting rod, and the other end of the conductor connecting rod extends to the inside of the second keyhole. A terminal block limiter is provided inside the first keyhole. A limit travel spring is provided at the bottom of the terminal block limiter. A limit contact point is provided on one side of the terminal block limiter. The limit contact point slides longitudinally inside the first keyhole. The top of the terminal block limiter extends to the outside of the linkage housing. This device achieves grounding wire device interlocking through mechanism linkage.

Description

Technical Field

[0001] This invention relates to the field of substation grounding protection equipment technology, specifically to a substation grounding wire interlocking device and its usage method. Background Technology

[0002] Currently, in power system production, switching operations are an important process for equipment shutdown and maintenance. Equipment is switched to maintenance status through grounding switching or grounding wire connection. The "Safety Regulations" stipulate in section 7.4.9 that when installing grounding wires, the grounding end should be connected first, followed by the conductor end, and the grounding wire should have good contact and reliable connection. The order of removing grounding wires is the reverse. However, in practical applications, the logical sequence of conductor end and grounding end when installing grounding wires is not properly interlocked. This poses a significant risk of induced electric shock during the installation or removal of grounding wires during switching operations. Therefore, how to solve the aforementioned problems has become an urgent issue. Summary of the Invention

[0003] The purpose of this invention is to provide a substation grounding wire interlocking device that can prevent induced electric current or electric shock accidents during the installation or removal of grounding wires.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a substation grounding wire interlocking device and its usage method, the main body of which includes a linkage housing, a grounding wire screw fixedly installed at the top of the linkage housing, the bottom end of the grounding wire screw extending into the interior of the linkage housing, a conductor access port provided on one side of the linkage housing, multiple conductor access ports provided, a conductor connecting rod provided inside the conductor access port, a mechanical lock buckle provided on the inner wall of the conductor access port, a first keyhole, a second keyhole and a five-proof electrical code provided on the other side of the linkage housing, the mechanical lock buckles being connected to each other through an unlocking connecting rod, the other end of the unlocking connecting rod extending into the interior of the second keyhole, a interlocking fulcrum spring provided on one side of the conductor connecting rod, the other end of the conductor connecting rod extending into the interior of the second keyhole, the conductor connecting rod and the unlocking connecting rod not contacting each other, a terminal block limiter provided inside the first keyhole, the terminal block limiter being configured as a strip structure, a limit travel spring provided at the bottom of the terminal block limiter, a limit contact point provided on one side of the terminal block limiter, the limit contact point sliding longitudinally inside the first keyhole, and the top of the terminal block limiter extending into the exterior of the linkage housing.

[0005] Preferably, the middle section of the grounding wire screw is provided with a rotating thread, one end of the grounding wire screw is provided with a square head, the inner side of the square head is provided with a grounding padlock through hole, and the other end of the grounding wire screw is provided with a rotating round head.

[0006] Preferably, the conductor connecting rod has a conductor base in the middle, the conductor base has multiple extension struts, one side of the extension strut has a contact connecting rod, the other side of the conductor base has a Z-shaped connecting rod, the other end of the Z-shaped connecting rod has a linkage inflection point, and the output end of the linkage inflection point has a reverse latch.

[0007] Preferably, the middle part of the unlocking linkage is set as a three-quarters annular base, one side of the annular base is provided with a mechanical lock, and the other side of the annular base is connected to a turning linkage through the edge.

[0008] Preferably, the terminal block limiter has a sliding limiting groove on its side.

[0009] Preferably, the operation includes the following steps:

[0010] Step 1: When installing the grounding wire at the terminal block using this device, first open the five-proof mechanical padlock of the grounding terminal with the five-proof key, and insert the grounding wire screw into the grounding terminal hole.

[0011] Step 2: After the grounding wire screw is reliably connected to the grounding stake, the terminal block limiter will press against the grounding stake and stop the stroke. Through the buffer of the limit stroke spring, the limit contact point in the first keyhole will move down.

[0012] Step 3: After inserting the five-proof key into the second keyhole, the mechanical lock is rotated in the opposite direction by the unlocking linkage, the locking conductor is disengaged from the device and connected to the grounding conductor end.

[0013] Step 4: When removing the grounding wire, all locking conductors must be inserted into the corresponding positions. After all the grounding wire locking conductors are inserted into the corresponding positions, the reverse locking device of the second keyhole of the five-proof system is unlocked by using the linkage bend point in conjunction with the reverse locking buckle.

[0014] Step 5: Only after the five-proof electrical code verification is passed can the five-proof padlock of the grounding stake be opened and the grounding wire removed.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: When installing grounding wires during equipment maintenance, the operator must ensure that the grounding stake is securely installed before the conductor end can be unlocked through the five-proof logic, preventing the conductor end from being suspended without grounding and causing electric shock. When removing the grounding wire, the grounding end cannot be opened as long as the grounding wire locking conductor is not fully returned to the grounding end of the main equipment. During both removal and installation, the grounding wire can be directly connected to the grounding grid, reducing the risk of electric shock to personnel during operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the grounding wire screw of the present invention;

[0018] Figure 3 This is a schematic diagram of the conductor connecting rod of the present invention;

[0019] Figure 4 This is a schematic diagram of the unlocking linkage of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the terminal block limiter of the present invention;

[0021] Figure 6 This is a schematic diagram of the appearance and structure of the present invention. Figure 1 ;

[0022] Figure 7 This is a schematic diagram of the appearance and structure of the present invention. Figure 2 ;

[0023] Figure 8 This is a schematic diagram of the internal structure of the present invention.

[0024] In the diagram: 1. Linkage housing; 2. Grounding screw; 3. Conductor access port; 4. Conductor connecting rod; 5. Mechanical lock; 6. First keyhole; 7. Second keyhole; 8. Five-proof electrical code; 9. Unlocking connecting rod; 10. Interlocking fulcrum spring; 11. Terminal block limiter; 12. Limit travel spring; 13. Limit contact point; 14. Grounding screw; 15. Access square head; 16. Grounding padlock through hole; 17. Rotating round head; 18. Conductor base; 19. Extension support rod; 20. Contact connecting rod; 21. Z-shaped connecting rod; 22. Linkage inflection point; 23. Reverse lock; 24. Annular base; 25. Turning connecting rod; 26. Sliding limiting groove. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1As shown in Figure 8, a substation grounding wire interlocking device and its usage method are disclosed. The main body includes a linkage housing 1. A grounding wire screw 2 is fixedly installed at the top of the linkage housing 1, and the bottom end of the grounding wire screw 2 extends into the interior of the linkage housing 1. One side of the linkage housing 1 has multiple conductor access ports 3. A conductor connecting rod 4 is provided inside the conductor access port 3, and a mechanical lock 5 is provided on the inner wall of the conductor access port 3. The other side of the linkage housing 1 has a first keyhole 6, a second keyhole 7, and a five-proof electrical code 8. The mechanical locks 5 are connected to each other via an unlocking connecting rod 9, the other end of which extends into the second keyhole. Inside the first keyhole 6, a chain fulcrum spring 10 is provided on one side of the conductor connecting rod 4. The other end of the conductor connecting rod 4 extends to the inside of the second keyhole 7. The conductor connecting rod 4 and the unlocking connecting rod 9 do not contact each other. A terminal block limiter 11 is provided inside the first keyhole 6. The terminal block limiter 11 is a strip structure. A limit stroke spring 12 is provided at the bottom of the terminal block limiter 11. A limit contact point 13 is provided on one side of the terminal block limiter 11. The limit contact point 13 slides longitudinally inside the first keyhole 6. The top of the terminal block limiter 11 extends to the outside of the linkage housing 1. The linkage housing is made of metal and can be used as a grounding conductor when necessary.

[0027] The middle section of the grounding screw 2 is provided with a rotating thread 14. One end of the grounding screw 14 is provided with a square head 15. The inside of the square head 15 is provided with a grounding padlock through hole 16. The other end of the grounding screw 14 is provided with a rotating round head 17.

[0028] The conductor base 18 is provided in the middle of the conductor connecting rod 4. The conductor base 18 is provided with multiple extension struts 19. One side of the extension strut 19 is provided with a contact connecting rod 20. The other side of the conductor base 18 is provided with a Z-shaped connecting rod 21. The other end of the Z-shaped connecting rod 21 is provided with a linkage inflection point 22. The output end of the linkage inflection point 22 is provided with a reverse locking buckle 23.

[0029] The middle part of the unlocking linkage 9 is set as a three-quarters annular base 24. A mechanical lock 5 is provided on one side of the annular base 24, and a turning linkage 25 is connected to the other side of the annular base 24 through the edge.

[0030] The side of the terminal block limiter 11 is provided with a sliding limiting groove 26.

[0031] The operation includes the following steps:

[0032] Step 1: When installing the grounding wire at the terminal block using this device, first open the five-proof mechanical padlock of the grounding end with the five-proof key, and insert the grounding wire screw 2 into the grounding terminal hole.

[0033] Step 2: After the grounding screw 2 is reliably connected to the grounding stake, the terminal block limiter 11 will press against the grounding stake and stop the stroke. Through the buffer of the limit stroke spring 12, the limit contact point 13 in the first keyhole 6 will move down.

[0034] Step 3: After inserting the five-proof key into the second keyhole 7, the mechanical lock 5 is rotated in the opposite direction by the unlocking linkage 9, the locking conductor is disengaged from the device and connected to the grounding conductor end.

[0035] Step 4: When the grounding wire is removed, the locking conductors must be inserted into the corresponding positions. After the grounding wire and locking conductors are inserted into the corresponding positions, the reverse locking device of the second keyhole 7 is unlocked by the linkage inflection point 22 in conjunction with the reverse locking buckle 23.

[0036] Step 5: Only after verifying the code through the five-proof electrical code 8 can the five-proof padlock of the grounding stake be opened and the grounding wire removed.

[0037] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the technical solutions of the present invention. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of the patent of the present invention.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A substation grounding wire interlocking device, characterized in that: The main body includes a linkage housing (1), a grounding screw (2) is fixedly installed at the top of the linkage housing (1), the bottom end of the grounding screw (2) extends into the interior of the linkage housing (1), a conductor access port (3) is provided on one side of the linkage housing (1), multiple conductor access ports (3) are provided, a conductor connecting rod (4) is provided inside the conductor access port (3), a mechanical lock (5) is provided on the inner wall of the conductor access port (3), and a first keyhole (6) and a second keyhole are provided on the other side of the linkage housing (1). (7) and five-proof electrical code (8), the mechanical lock (5) is connected to each other by the unlocking link (9), the other end of the unlocking link (9) extends to the inside of the second keyhole (7), the conductor link (4) is provided with a chain fulcrum spring (10) on one side, the other end of the conductor link (4) extends to the inside of the second keyhole (7), the conductor link (4) and the unlocking link (9) do not contact each other, the first keyhole (6) is provided with a terminal block limiter (11), the terminal block limiter (11) is set as a strip The terminal block limiter (11) has a limit travel spring (12) at its bottom end and a limit contact point (13) on one side. The limit contact point (13) slides longitudinally inside the first keyhole (6). The top of the terminal block limiter (11) extends to the outside of the linkage housing (1). The grounding screw (2) has a rotating thread (14) in the middle section. One end of the grounding screw (14) is configured as an access square head (15). The access square head (15) has a connection inside. The grounding padlock has a through hole (16), and the other end of the grounding screw (14) is set as a rotating round head (17); the conductor connecting rod (4) has a conductor base (18) in the middle, the conductor base (18) has multiple extension support rods (19), one side of the extension support rod (19) has a contact connecting rod (20), the other side of the conductor base (18) has a Z-shaped connecting rod (21), the other end of the Z-shaped connecting rod (21) has a linkage inflection point (22), and the output end of the linkage inflection point (22) has a reverse latch (23).

2. The substation grounding wire interlocking device according to claim 1, characterized in that: The unlocking link (9) is provided with a three-quarters annular base (24) in the middle. A mechanical lock (5) is provided on one side of the annular base (24), and a turning link (25) is connected to the other side of the annular base (24) through the edge.

3. A substation grounding wire interlocking device according to claim 1, characterized in that: The terminal block limiter (11) has a sliding limiting groove (26) on its side.

4. The method of using a substation grounding wire interlocking device according to claim 1, characterized in that: The operation includes the following steps: Step 1: When using this device to install the grounding wire at the terminal block, first open the five-proof mechanical padlock of the grounding end with the five-proof key, and insert the grounding wire screw (2) into the grounding pile hole; Step 2: After the grounding screw (2) is reliably connected to the grounding stake, the terminal block limiter (11) will press against the grounding stake and stop the stroke. Through the buffer of the limit stroke spring (12), the limit contact point (13) in the first keyhole (6) will move down. Step 3: After inserting the five-proof key into the second keyhole (7), the mechanical lock (5) is rotated in the opposite direction by the unlocking linkage (9), the locking conductor is disengaged from the equipment and connected to the grounding conductor end; Step 4: When the grounding wire is removed, the locking conductor must be inserted into the corresponding position. After the grounding wire locking conductor is inserted into the corresponding position, the reverse locking device of the second keyhole (7) of the five-proof can be unlocked by the linkage inflection point (22) in conjunction with the reverse lock (23). Step 5: Only after verifying the code through the five-proof electrical code (8) can the five-proof padlock of the grounding pile be opened and the grounding wire removed.

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