Power transmission system and grounding device with locking function thereof

Abstract

The invention discloses a power transmission system and a grounding device with a locking function thereof. The device comprises a grounding pile, a locking plate and a locking structure. The first end of the grounding pile is connected with a ground screen, the second end is provided with a pin hole penetrating through the side surface of the pile body, and the aperture of the pin hole is larger than the cross section diameter of an end part pin of the grounding wire. A guide device in the locking structure is movably embedded with a locking plate, the guide device limits the locking plate to only move in the first direction, and the first direction is perpendicular to the penetrating direction of the pin penetrating hole; an electric lock body in the locking structure is used for locking or releasing a locking plate according to a control signal; the locked locking plate is fixed in position and clings to the pin penetrating hole, so that an end penetrating pin of the grounding wire cannot penetrate through the pin penetrating hole; the released locking plate can move away along the first direction and avoid the pin penetrating hole, so that an end penetrating pin of the grounding wire can penetrate through the pin penetrating hole, physical locking of the grounding pile is realized, and misoperation caused by illegal unlocking of a five-prevention lock or skipping of a microcomputer five-prevention lock by a maintainer is avoided.

Description

Technical Field

[0001] The invention relates to the field of electric power systems, and in particular to a power transmission system and a grounding device with a locking function thereof. Background Art

[0002] Grounding is one of the technical measures to ensure the safety of personnel when working on electrical equipment and related places. Its implementation methods include installing grounding wires and closing grounding switches. When the grounding switch is not configured, the grounding switch is abnormal, or the isolation switch corresponding to the grounding switch is abnormal, the line grounding can only be achieved by installing a grounding wire.

[0003] In the prior art, the ground wire is usually installed by connecting the grounding end of the ground wire to a fixed grounding pile to achieve the connection between the ground wire and the ground grid. The ground wire installation operation is a key management object to prevent misoperation. It is usually achieved by hanging a five-protection lock on the grounding pile. The unlocking conditions of the five-protection lock of the grounding pile are set by the five-protection of the microcomputer, and there is a lack of electrical locking conditions. When the operator illegally unlocks the five-protection lock or skips the five-protection of the microcomputer to perform the grounding operation, misoperation is likely to occur. Summary of the invention

[0004] The invention provides a power transmission system and a grounding device with a locking function thereof, so as to avoid erroneous operation caused by maintenance personnel illegally unlocking a five-protection lock or skipping a microcomputer five-protection.

[0005] According to one aspect of the present invention, a grounding device with a locking function is provided, and the grounding device with a locking function is used in conjunction with a grounding wire;

[0006] The grounding device with locking function comprises a grounding stake, a locking plate and a locking structure;

[0007] The first end of the grounding pile is connected to the ground grid, and the second end of the grounding pile is provided with a pin hole penetrating the side of the pile body, wherein the hole diameter of the pin hole is larger than the cross-sectional diameter of the end pin of the grounding wire;

[0008] The locking structure includes a guide device and an electric lock body, the guide device is movably engaged with the locking plate, the guide device is used to limit the locking plate to move only along a first direction, wherein the first direction is perpendicular to the penetration direction of the pin hole; the electric lock body is used to lock or release the locking plate according to a control signal; after being locked, the locking plate is fixed in position and tightly attached to the pin hole, so that the end pin of the grounding wire cannot pass through the pin hole; and after being released, the locking plate can be moved away along the first direction and avoid the pin hole, so that the end pin of the grounding wire can pass through the pin hole.

[0009] Optionally, the grounding device with locking function is used in conjunction with the grounding wire and the five-protection padlock;

[0010] The locking plate is provided with a five-proof padlock hole which passes through the front and back of the plate body, and the hole diameter of the five-proof padlock hole is larger than the cross-sectional diameter of the locking rod of the five-proof padlock and smaller than the cross-sectional diameter of the end through-pin; wherein, after being locked, the position of the locking plate is fixed and the five-proof padlock hole thereon is directly opposite to and tightly attached to the through-pin hole, so that the five-proof padlock can pass through the five-proof padlock hole and the through-pin hole in sequence.

[0011] Optionally, the electric lock body comprises a telescopic lock rod and a control component, wherein the control component is connected to the telescopic lock rod, and the control component is used to switch the telescopic lock rod to pop out and retract according to the control signal;

[0012] The locking plate is provided with a locking hole that matches the cross-sectional shape of the telescopic locking rod, and the drilling direction of the locking hole is perpendicular to the first direction;

[0013] When the locking plate is locked, the control component controls the telescopic locking rod to pop out and embed into the locking hole, so that the locking plate is fixed and fits tightly against the pin hole, so that the end pin of the grounding wire cannot pass through the pin hole;

[0014] When the locking plate is released, the control assembly controls the telescopic locking rod to retract from the locking hole, so that the locking plate can move along the first direction to avoid the pin hole.

[0015] Optionally, the control component includes a motor and a transmission structure; the transmission structure is connected to the telescopic locking rod, and the transmission structure is used to drive the telescopic locking rod to perform corresponding actions according to the power provided by the motor.

[0016] Optionally, the control assembly includes an electromagnetic coil and an armature;

[0017] The armature is connected to the root of the telescopic locking rod, and the armature is used to drive the telescopic locking rod to perform corresponding actions according to the power provided by the electromagnetic coil.

[0018] Optionally, the guiding device includes a guide plate, on which a guide hole is provided, and the guide hole passes through the front and back sides of the guide plate and the penetration direction is the first direction; the hole cross-section of the guide hole is adapted to the cross-section of the locking plate, so that the locking plate can be nested in the guide hole and can only move along the penetration direction of the guide hole.

[0019] Optionally, the locking plate includes a main board and an end plate, and the main board is movably engaged with the guide device; the extension direction of the main board is the first direction and is perpendicular to the extension direction of the end plate, the first end of the main board is used to fit the pin hole, and the second end of the main board is fixedly connected to the end plate; the end plate is used to overlap the guide plate or the electric lock body when the main board moves to a preset position along the first direction, so as to limit the range in which the locking plate can move along the first direction.

[0020] Optionally, the grounding device with locking function further comprises an elastic element, one end of the elastic element is connected to the front side of the end plate, and the other end is connected to the front side of the guide plate, wherein the front side of the end plate is a side connected to the main board, and the front side of the guide plate is a side opposite to the front side of the end plate;

[0021] When the elastic element is in a natural state, the locking plate is in a preset position, so that the end pin of the grounding wire cannot pass through the pin hole, wherein the preset position is a position where the locking plate can completely block the pin hole during movement along the first direction; when the elastic element is in a maximum stretched state, the locking plate completely avoids the pin hole, so that the end pin of the grounding wire can pass through the pin hole.

[0022] According to another aspect of the present invention, there is provided a power transmission system, the power transmission system comprising: at least one busbar, and a transformer switch, a transmission branch switch, a control circuit and any grounding device with a locking function as described in the previous aspect corresponding to the busbar;

[0023] The transformer switch is arranged between the corresponding busbar and the voltage transformer;

[0024] The power transmission branch switch is arranged between the corresponding busbar and the power transmission branch;

[0025] The locking structure and the control branch in the grounding device with locking function are connected in series between the positive and negative electrodes of the grounding control power supply to form the control loop; the locking structure is used to release or lock the locking plate according to the presence or absence of a control signal on the corresponding control loop;

[0026] Among them, the control branch includes a first branch connected in series with a first contact and a second contact, the first contact is opposite to the on-off state of the corresponding transformer switch, and the second contact is opposite to the on-off state of the transmission branch switch.

[0027] Optionally, the power transmission system further comprises at least one grounding switch corresponding to the busbar;

[0028] The control branch also includes a second branch connected in parallel with the first branch, and the second branch includes at least one third contact connected in parallel. The third contact corresponds one-to-one with the grounding switch and has the same on-off state as the corresponding grounding switch.

[0029] The present invention provides a power transmission system and a grounding device with a locking function, wherein the grounding device includes a grounding pile, a locking plate and a locking structure. The first end of the grounding pile is connected to the ground grid, and the second end of the grounding pile is provided with a pin hole penetrating the side of the pile body, wherein the aperture of the pin hole is larger than the cross-sectional diameter of the end pin of the grounding wire; the guide device in the locking structure is movably engaged with the locking plate, and the guide device is used to limit the locking plate to move only in the first direction, wherein the first direction is perpendicular to the penetrating direction of the pin hole; the electric lock body in the locking structure is used to lock or release the locking plate according to the control signal; the locked locking plate is fixed in position and tightly attached to the pin hole, so that the end pin of the grounding wire cannot pass through the pin hole; and the released locking plate can be moved away in the first direction and avoid the pin hole, so that the end pin of the grounding wire can pass through the pin hole, thereby realizing the physical locking of the grounding pile and avoiding the erroneous operation caused by the maintenance personnel illegally unlocking the five-protection lock or skipping the five-protection of the microcomputer.

[0030] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic diagram of the composition of a grounding device with a locking function provided by an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of a partial structure of a grounding wire provided in an embodiment of the present invention;

[0034] Figure 3 A schematic structural diagram of another grounding device with a locking function provided by an embodiment of the present invention;

[0035] Figure 4 This is a structural schematic diagram of a five-protection padlock provided by an embodiment of the present invention;

[0036] Figure 5A schematic structural diagram of another grounding device with a locking function provided by an embodiment of the present invention;

[0037] Figure 6 A schematic structural diagram of an electric lock body and its corresponding locking hole provided by an embodiment of the present invention;

[0038] Figure 7 This is a schematic structural diagram of another electric lock body and its corresponding locking hole provided by an embodiment of the present invention;

[0039] Figure 8 A schematic structural diagram of another grounding device with a locking function provided by an embodiment of the present invention;

[0040] Fig. 9 A schematic structural diagram of a guide plate provided in an embodiment of the present invention;

[0041] Fig.10 A schematic structural diagram of another grounding device with a locking function provided by an embodiment of the present invention;

[0042] Fig.11 A schematic structural diagram of a locking plate provided by an embodiment of the present invention;

[0043] Fig.12 A schematic structural diagram of another locking plate provided in an embodiment of the present invention;

[0044] Fig.13 A circuit diagram of a power transmission system provided by an embodiment of the present invention;

[0045] Fig.14 A circuit diagram of a control loop provided by an embodiment of the present invention;

[0046] Fig.15 A circuit diagram of another power transmission system provided by an embodiment of the present invention;

[0047] Fig.16 A circuit diagram of another control loop provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0050] In order to solve the problem mentioned in the background technology, the present invention provides a grounding device with a locking function, and the grounding device with a locking function is used in conjunction with a grounding wire. Figure 1 A schematic diagram of the composition of a grounding device with a locking function provided by an embodiment of the present invention, Figure 2 A partial structural diagram of a grounding wire provided in an embodiment of the present invention is provided for the purpose of clarity. Figure 1 The dotted line on the locking plate shows the part of the grounding pile blocked by the locking plate. Figure 1 and Figure 2 The grounding device 100 with locking function comprises a grounding post 101, a locking plate 102 and a locking structure 103. The first end of the grounding post 101 is connected to the ground grid, and the second end of the grounding post 101 is provided with a pin hole 104 penetrating the side of the post body, wherein the hole diameter of the pin hole 104 is larger than the cross-sectional diameter of the end pin 201 of the grounding wire 200. The locking structure 103 includes a guide device 105 and an electric lock body 106, and the guide device 105 is movably engaged with the locking plate 102, and the guide device 105 is used to limit the locking plate 102 to move only along a first direction, wherein the first direction is perpendicular to the penetration direction of the pin hole 104; the electric lock body 106 is used to lock or release the locking plate 102 according to a control signal; after being locked, the locking plate 102 is fixed in position and tightly attached to the pin hole 104, so that the end pin 201 of the grounding wire 200 cannot pass through the pin hole 104; and after being released, the locking plate 102 can move away along the first direction and avoid the pin hole 104, so that the end pin 201 of the grounding wire 200 can pass through the pin hole 104.

[0051] Specifically, the grounding wire 200 has a bonding end ( Figure 2The grounding wire 200 (not shown) is used to connect with the conductor end and fixed on the equipment to achieve the grounding of the equipment. The grounding end of the grounding wire 200 is used to connect with the grounding post 101. The grounding end of the grounding wire 200 is provided with a wire ear 202, a base 203, an end pin 201, a butterfly nut 204 and a gasket 205. One end of the wire ear 202 is connected to the grounding post 101, and the other end is fastened to the grounding wire 200. One end of the base 203 is connected to the wire ear 202, and the other end is connected to the end pin 201. The end pin 201 adopts a bolt structure, which cooperates with the butterfly nut 204. After the end pin 201 passes through the pin hole 104, the butterfly nut 204 is tightened on the end pin 201 to fix the grounding wire 200. Two gaskets 205 are disposed at the grounding end of each grounding wire 200 . During installation, the two gaskets 205 are disposed on the front and back sides of the grounding post 101 to increase the contact area between the grounding wire 200 and the grounding post 101 .

[0052] The grounding pile 101 refers to a conductive pile body used to connect the grounding wire 200 in the grounding device, one end of which is connected to the ground wire, and the other end can be connected and fixed to the grounding wire 200. Exemplarily, the grounding pile 101 can be made of metal, for example, the grounding pile 101 can be a strip metal plate, the first end of the strip metal plate can be fixedly set in the receiving wall 107, under the ground or on the electrical box, connected to the ground grid in the wall, underground or in the electrical box, and the second end is extended outside the wall, above the ground or outside the electrical box, so as to facilitate the connection of the grounding wire 200. The through-pin hole 104 refers to a through hole on the grounding pile 101 for connecting the grounding wire 200, which is set at the second end of the grounding pile 101 and passes through the side of the second end. When the maintenance personnel connect the grounding wire 200, they can pass the end through-pin 104 of the end of the grounding wire 200 from one side of the grounding pile 101 through the through-pin hole 104 to the other side, and fix it with fixing parts such as nuts to achieve the connection between the grounding wire 200 and the grounding pile 101.

[0053] The locking plate 102 is a rigid baffle of the pin hole 104, and its state can be locked or released. For example, the locking plate 102 can be a strip plate. The locking plate 102 in the locked state is fixed at a preset position, and at least part of the locking plate 102 in the preset position is in close contact with one side of the grounding pile 101, so that it is in close contact with the pin hole 104 on this side, preventing the pin of the grounding wire 200 from passing through the pin hole 104, and preventing maintenance personnel from illegally connecting the grounding wire 200. The locking plate 102 in the released state can move along the first direction, thereby avoiding the pin hole 104, so that the pin of the grounding wire 200 can pass through the pin hole 104 and complete the connection with the grounding pile 101, wherein the first direction is a direction perpendicular to the penetration direction of the pin hole 104.

[0054] The locking structure 103 corresponds to the locking plate 102, and can control the position of the locking plate 102 to be locked or released. The locking structure 103 is fixedly arranged relative to the grounding post 101. For example, the locking structure 103 can be fixedly connected to the wall, ground or device to which the first end of the grounding post 101 is connected via a bracket ( Figure 1 , the locking structure 103 is exemplarily shown to be fixedly connected to the wall to which the first end of the grounding post 101 is connected through a bracket), and it can also be fixedly installed near the grounding post 101 through a bracket, which is not limited here. The guide device 105 in the locking structure 103 is a movement direction limiting device that is movably engaged with the locking plate 102, so that the locking plate 102 can only move along the guide direction of the guide device 105, and the guide direction of the guide device 105 is the first direction. Exemplarily, the guide device 105 may include at least one of a guide tube with a penetration direction in the first direction, a guide hole with a penetration direction in the first direction, or a guide rail with a guide direction in the first direction. In the case where the guide device 105 includes a guide hole or a guide tube, the locking plate 102 can be sleeved in the guide tube or the guide hole, so that the locking plate 102 can only move along the penetration direction of the guide tube or the penetration direction of the guide hole (that is, the first direction). In the case where the guide device 105 is a guide rail, the locking plate 102 can be movably embedded in the guide rail, so that the locking plate 102 can only move along the guiding direction of the guide rail (that is, the first direction). The electric lock body 106 in the locking structure 103 is a position limiting device for the locking plate 102, and can release or lock the locking plate 102 in a preset position according to a control signal, wherein the preset position is a position in which the locking plate 102 can completely block the pin hole 104 on the grounding post 101 during the movement of the locking plate 102 in the first direction, and the control signal can be a signal provided by the control circuit of the grounding device. Exemplarily, the electric lock body 106 can use any limiting tool such as an electric clamp, a telescopic limiting protrusion, a telescopic hook or a telescopic locking rod to perform position limiting operations such as clamping, locking, lifting or plugging on the limiting recess at the corresponding position on the locking plate 102.

[0055] The grounding device with locking function provided in this embodiment includes a grounding pile, a locking plate and a locking structure. The first end of the grounding pile is connected to the ground grid, and the second end of the grounding pile is provided with a pin hole penetrating the side of the pile body, wherein the aperture of the pin hole is larger than the cross-sectional diameter of the end pin of the grounding wire; the guide device in the locking structure is movably engaged with the locking plate, and the guide device is used to limit the locking plate to move only in the first direction, wherein the first direction is perpendicular to the penetrating direction of the pin hole; the electric lock body in the locking structure is used to lock or release the locking plate according to the control signal; the locked locking plate is fixed in position and tightly attached to the pin hole, so that the end pin of the grounding wire cannot pass through the pin hole; and the released locking plate can be moved away in the first direction and avoid the pin hole, so that the end pin of the grounding wire can pass through the pin hole, thereby realizing the physical locking of the grounding pile and avoiding the erroneous operation caused by the maintenance personnel illegally unlocking the five-protection lock or skipping the five-protection of the microcomputer.

[0056] Optionally, Figure 3 A schematic diagram of the structure of another grounding device with a locking function provided by an embodiment of the present invention, Figure 4 This is a schematic diagram of the structure of a five-protection padlock provided by an embodiment of the present invention, wherein, for the sake of clarity, Figure 3 The dotted line on the locking plate shows the part of the grounding pile blocked by the locking plate. Figure 3 The grounding device with locking function shown in the figure is used in conjunction with the grounding wire and is also used in conjunction with a five-proof padlock. Figure 3 and Figure 4 The locking plate 102 is provided with a five-proof padlock hole 301 that passes through the front and back of the plate body, and the aperture of the five-proof padlock hole 301 is larger than the cross-sectional diameter of the locking rod of the five-proof padlock and smaller than the cross-sectional diameter of the end through-pin; wherein, after being locked, the locking plate 102 is fixed in position and the five-proof padlock hole 301 thereon is directly opposite to and tightly attached to the through-pin hole 104, so that the locking rod 401 of the five-proof padlock 400 can pass through the five-proof padlock hole 301 and the through-pin hole 104 in sequence.

[0057] Specifically, the five-defense padlock 400 includes a lock body 402, a lock rod 401 and a key hole 403. The lock rod 401 can pass through the five-defense padlock hole 301 and the pin hole 104 on the locking plate 102 to lock the grounding post 101. After the grounding post 101 is locked, even if the electric lock body 106 receives a control signal, the maintenance personnel cannot pull the locking plate 102 to remove the blocking and locking of the pin hole 104 by the locking plate 102. The key operating rod of the key corresponding to the five-defense padlock 400 can be inserted into the key hole 403. When the preset unlocking conditions are met, the lock body 402 is unlocked to unlock the lock rod 401, thereby unlocking the grounding post 101.

[0058] The five-proof padlock hole 301 refers to a positive and negative through-hole on the locking plate 102, which is used to hang the five-proof padlock 400. It should be particularly noted that in this embodiment, the preset position of the locking plate 102 can be further defined as a position where the five-proof padlock hole 301 is directly opposite to and closely attached to the through-pin hole 104. The locking plate 102 in the locked state is located at the preset position, so that the five-proof padlock hole 301 is directly opposite to and closely attached to the through-pin hole 104 on the grounding post 101. Since the aperture of the five-proof padlock hole 301 is smaller than the cross-sectional diameter of the through-pin at the upper end of the grounding wire, when the locking plate 102 is locked, even if the five-proof padlock is not used to lock the locking plate 102 and the grounding post 101, the maintenance personnel still cannot connect the grounding wire to the grounding post 101, which further reduces the maintenance personnel's misoperation and improves the safety of the grounding operation.

[0059] Optionally, Figure 5 A schematic diagram of the structure of another grounding device with a locking function provided by an embodiment of the present invention, Figure 6 A schematic diagram of the structure of an electric lock body and its corresponding locking hole provided by an embodiment of the present invention. Figure 7 This is a schematic diagram of the structure of another electric lock body and its corresponding locking hole provided by an embodiment of the present invention, wherein: Figure 6 and Figure 7 They are schematic cross-sectional views of the corresponding electric lock body and the locking plate cut by the first plane; Figure 5 The position of the armature and the telescopic lock rod connected thereto in the released state is shown by a red solid line, and the position of the armature and the telescopic lock rod connected thereto in the locked state is shown by a blue dotted line. Figure 5 The electric lock body 106 includes a telescopic lock rod 501 and a control component 502. The control component 502 is connected to the telescopic lock rod 501. The control component 502 is used to switch the pop-up and retraction of the telescopic lock rod 501 according to the control signal. The locking plate 102 is provided with a locking hole 503 that matches the cross-sectional shape of the telescopic lock rod 501. The drilling direction of the locking hole 503 is perpendicular to the first direction. When the locking plate 102 is locked, the control component 502 controls the telescopic lock rod 501 to pop out and embed into the locking hole 503, so that the position of the locking plate 102 is fixed and close to the pin hole 104, so that the end pin of the grounding wire cannot pass through the pin hole 104. When the locking plate 102 is released, the control assembly 502 controls the telescopic locking rod 501 to retract from the locking hole 503 , so that the locking plate 102 can move along the first direction to avoid the pin hole 104 .

[0060] Specifically, the telescopic locking rod 501 is a limit rod corresponding to the locking hole 503 on the locking plate 102, and its cross section is adapted to the hole cross section of the locking hole 503, that is, the cross-sectional shape of the telescopic locking rod 501 is the same as the hole cross-sectional shape of the locking hole 503 and the cross-sectional area of ​​the telescopic locking rod 501 is slightly smaller than the cross-sectional area of ​​the locking hole 503. The telescopic locking rod 501 can be ejected or retracted along the drilling direction of the locking hole 503, thereby extending into the locking hole 503 or retracting from the locking hole 503 to achieve locking and unlocking of the locking plate 102. The control component 502 can be disposed in the lock housing, and can control the telescopic state of the telescopic locking rod 501 according to a control signal. For example, in combination Figure 5 and Figure 6 The control component 502 may include an electromagnetic coil 601 and an armature 602; the armature 602 is connected to the root of the telescopic lock rod 501, and the armature 602 is used to drive the telescopic lock rod 501 to perform corresponding actions according to the power provided by the electromagnetic coil 601. The electromagnetic coil 601 adjusts its working state according to the control signal. Figure 5 and Figure 7 The control component 502 may also include a motor 701 and a transmission structure 702; the transmission structure 702 is connected to the telescopic lock rod 501, and the transmission structure 702 is used to drive the telescopic lock rod 501 to perform corresponding actions according to the power provided by the motor 701. The motor 701 adjusts its own working state according to the control signal.

[0061] Continue to refer to Figure 5 The locking hole 503 can penetrate both sides of the locking plate 102 ( Figure 5 The locking hole 503 on the locking plate 102 is provided at a position that enables the locking plate 102 to be located at a preset position when locked, that is, the locking plate 102 is located at a position where at least a portion of the locking plate 102 is in close contact with the pin hole 102, so that the end pin of the grounding wire cannot pass through the pin hole 102.

[0062] The electric lock body in the grounding device with locking function provided in this embodiment includes a telescopic locking rod and a control component, wherein the control component is connected to the telescopic locking rod, and the control component is used to switch the pop-up and retraction of the telescopic locking rod according to the control signal. A locking hole that matches the cross-sectional shape of the telescopic locking rod is provided on the locking plate, and the drilling direction of the locking hole is perpendicular to the first direction. When the locking plate is locked, the control component controls the telescopic locking rod to pop out and embed into the locking hole, so that the position of the locking plate is fixed and close to the pin hole, so that the end pin of the grounding wire cannot pass through the pin hole. When the locking plate is released, the control component controls the telescopic locking rod to retract from the locking hole, so that the locking plate can move along the first direction and avoid the pin hole, thereby realizing reliable locking and release of the locking plate, and further improving the locking reliability of the grounding device.

[0063] Optionally, Figure 8 A schematic diagram of the structure of another grounding device with a locking function provided by an embodiment of the present invention, Fig. 9 A schematic diagram of the structure of a guide plate provided in an embodiment of the present invention, Fig. 9 It is shown that Figure 8 The guide plate in the device shown in the figure is based on the above embodiment and is combined with Figure 8 and Fig. 9 The guide device includes a guide plate 801, and a guide hole 802 is arranged on the guide plate 801. The guide hole 802 passes through the front and back sides of the guide plate 801 and the penetration direction is the first direction; the hole cross-section of the guide hole 802 is adapted to the cross-section of the locking plate 102, so that the locking plate 102 can be nested in the guide hole 802 and can only move along the penetration direction of the guide hole 802 (that is, the first direction).

[0064] Specifically, the guide plate 801 is a guide device for limiting the movable direction of the locking plate 102. The extension direction of the front side of the plate can be perpendicular to the first direction. The guide plate 801 is fixed relative to the electric lock body, and a guide hole 802 is provided thereon. The guide hole 802 penetrates the front and back sides of the guide plate 801 and its penetration direction is the first direction. The hole cross section is the hole boundary cross section obtained by cutting the hole by a plane perpendicular to its penetration direction. The hole cross section shape of the guide hole 802 is the same as the cross section shape of the locking plate 102. The hole cross section area of ​​the guide hole 802 is slightly larger than the cross section area of ​​at least part of the locking plate 102, so that at least part of the locking plate 102 can fit through the guide hole 802 and can only move along the penetration direction of the guide hole 802 (that is, the first direction). The guide plate 801 has a simple structure and a stable guiding effect. On the basis of reducing the manufacturing cost of the device, it provides a stable direction guidance for the locking plate 102, thereby improving the reliability of the grounding device.

[0065] Optionally, Fig.10 A schematic diagram of the structure of another grounding device with a locking function provided by an embodiment of the present invention, Fig.11 A schematic diagram of the structure of a locking plate provided by an embodiment of the present invention, Fig.12 A schematic diagram of the structure of another locking plate provided by an embodiment of the present invention, wherein: Fig.11 It is shown that Fig.10 The locking plate in the device shown, Fig.12 It shows Fig.10 Another locking plate other than the locking plate in the device shown in the figure, based on the above embodiment, is combined with Fig.10 , Fig.11 and Fig.12 The locking plate 102 includes a main plate 1002 and an end plate 1001, and the main plate 1002 is movably engaged with the guide device. The extension direction of the main plate 1002 is the first direction and is perpendicular to the extension direction of the end plate 1001. The first end of the main plate 1002 is used to fit the pin hole 104, and the second end of the main plate 1002 is fixedly connected to the end plate 1001; the end plate 1001 is used to overlap the guide plate 701 or the electric lock body 502 when the main plate 1002 moves to a preset position along the first direction, so as to limit the range in which the locking plate 102 can move along the first direction.

[0066] Specifically, the main board 1002 and the end board 1001 can both be strip-shaped boards, that is, quadrangular prisms. The extension direction of the main board 1002 is the first direction, and its cross section is adapted to the hole cross section of the guide hole on the guide plate 701. The extension direction of the end board 1001 is perpendicular to the extension direction of the main board 1002. For example, the second end of the main board 1002 can be fixedly connected to the front of one end of the end board 1001, so that the combined shape of the main board 1002 and the end board 1001 is L-shaped, or it can be fixedly connected to the front of the middle section of the end board 1001, so that the combined shape of the main board 1002 and the end board 1001 is T-shaped. The combination of the end board 1001 and the main board 1002 can make the locking plate 102 have a fixed movement range when moving along the first direction, which is convenient for maintenance personnel to quickly find the preset position and improve the convenience of operation of the grounding device.

[0067] In addition, optionally, based on the above embodiment, continue to refer to Fig.10The grounding device 100 with a locking function may further include an elastic element 1003, one end of the elastic element 1003 is connected to the front side of the end plate, and the other end is connected to the front side of the guide plate 801, wherein the front side of the end plate 1001 is a side connected to the main board 1002, and the front side of the guide plate 801 is a side opposite to the front side of the end plate 1001. When the elastic element 1003 is in a natural state, the elastic element 1003 pulls the locking plate to a preset position, so that the end pin of the grounding wire cannot pass through the pin hole 104, wherein the preset position is a position where the locking plate can completely block the pin hole 104 during the movement along the first direction; when the elastic element 1003 is in a maximum tension state, the locking plate completely avoids the pin hole 104, so that the end pin of the grounding wire can pass through the pin hole 104, which further limits the movable range of the locking plate along the first direction, improving the convenience of operation of the grounding device, and avoids the locking plate from falling off and missing, thereby extending the service life of the grounding device with a locking function. Exemplarily, the elastic element 1003 may include a spring.

[0068] The invention also provides a power transmission system. Fig.13 A circuit diagram of a power transmission system provided by an embodiment of the present invention, Fig.14 A circuit diagram of a control loop provided by an embodiment of the present invention, wherein: Fig.13 The control circuit is omitted. Fig.14 The control loop shown is Fig.13 Based on the above embodiments, combined with Fig.13 and Fig.14 The power transmission system 1300 includes a busbar 1301, and a transformer knife switch GPT, a transmission branch knife switch G, a control circuit 1400 and a grounding device 100 with a locking function as described in any of the above embodiments. The transformer knife switch GPT is arranged between the corresponding busbar 1301 and the voltage transformer 1302. The transmission branch knife switch G is arranged between the corresponding busbar 1301 and the corresponding transmission branch. The control signal receiving element RL of the locking structure and the control branch 1401 in the grounding device 100 with a locking function are connected in series between the positive electrode +KM and the negative electrode -KM of the grounding control power supply to form the control circuit 1400; the locking structure is used to release or lock the locking plate according to the presence or absence of the control signal on the corresponding control circuit 1400. Among them, the control branch 1401 includes a first branch connected in series with a first contact G1 and a second contact G2, the first contact G1 is opposite to the on-off state of the corresponding transformer knife switch GPT, and the second contact G2 is opposite to the on-off state of the corresponding transmission branch knife switch GPT.

[0069] Specifically, the bus 1301 is the main transmission line of the power transmission system, and the power of the transmission branch or each device in the system is supplied by the bus 1301. The number of busbars 1301 is at least 1. This embodiment takes the number of busbars equal to 1 as an example for illustrative description. In the power transmission system, in order to improve the reliability of power supply and transmission, the number of busbars 1301 can be greater than 2. Each busbar 1301 has a corresponding transformer knife switch GPT, a transmission branch knife switch G, a control circuit 1400 and a grounding device 100 with a locking function. A busbar 1301 and the corresponding transformer knife switch GPT, the transmission branch knife switch G, the control circuit 1400 and the grounding device 100 with a locking function and other power equipment can be recorded as the same group. The transformer knife switch GPT is a switch knife switch arranged between the busbar 1301 and its corresponding voltage transformer 1302 in the group. The branch switch 1401 is a switch switch set between the busbar 1301 of the same group and its corresponding transmission branch. One busbar 1301 can correspond to multiple transmission branches, and the number of transmission branches can be set according to actual needs. The transmission branch is a transmission branch on the busbar 1301, which can distribute the power on the busbar 1301 to the subsequent equipment. It should be noted that if there are multiple transmission branches corresponding to the busbar 1301, then the second nodes G2 in the first branch are connected in series in sequence ( Fig.14 exemplarily shows the situation where one bus corresponds to multiple transmission branches).

[0070] The control circuit 1400 refers to the control circuit of the grounding device 100 with a locking function. The way of connecting the locking structure in the control circuit 1400 may refer to connecting the control signal receiving element RL in the locking structure to the control circuit 1400. Exemplarily, the control signal receiving element RL may include a motor or an electromagnetic coil. The control circuit 1400 is provided with a first contact G1 related to the state of the transformer knife switch GPT and a second contact G2 related to the state of the transmission branch knife switch G, so that the working state of the locking structure in the grounding device with a locking function is respectively related to the switch state of the transformer knife switch GPT and the switch state of the transmission branch knife switch G.

[0071] In the power transmission system provided by this embodiment, the locking structure and the control branch in the grounding device with locking function are connected in series between the positive and negative poles of the grounding control power supply to form the control loop. The control branch includes a first branch connected in series with a first contact and a second contact, the first contact is opposite to the on-off state of the corresponding transformer knife switch, and the second contact is opposite to the on-off state of the transmission branch knife switch, so that the working state of the locking structure in the grounding device with locking function is respectively related to the on-off state of the transformer knife switch and the on-off state of the transmission branch knife switch, so that the locking structure controls the locking and release of the locking plate according to the state of the same group of knife switches in the transmission line. When the safety of the transmission line is guaranteed, the locking structure controls the release of the locking plate, so that the grounding pile is switched to a connectable state, preventing maintenance personnel from misoperating in dangerous situations, and improving the safety of the power transmission system.

[0072] Optionally, based on the above-mentioned embodiment, before the control circuit is connected to the positive and negative electrodes of the ground control power supply, it can also be connected to the two contacts of the ground control power supply air switch respectively. After the two contacts of the air switch are closed, the control circuit is energized, so that the locking structure is truly affected by the transformer knife switch and the transmission branch knife switch. The control circuit is set in such a way that the locking structure can receive the control signal to control the release of the locking plate only when all the transformer knife switches and the transmission branch knife switches in the group are turned off.

[0073] In the case where the power transmission system includes multiple busbars, a bus tie switch and single-side knife switches corresponding to the two busbars may be provided between any two busbars, and the two single-side knife switches are respectively provided in series between different ends of the bus tie switch and the corresponding busbars. Corresponding to the single-side knife switch, a single-side contact corresponding to the busbar in the group is also provided in series in the first branch, and the single-side contact has the same on-off state as the corresponding single-side knife switch.

[0074] The power transmission system may further include at least one grounding switch corresponding to the busbar, and the grounding switch corresponds to the grounding device with a locking function corresponding to the busbar. The control branch also includes a second branch connected in parallel with the first branch, and the second branch includes at least one third contact in parallel, and the third contact corresponds to the grounding switch one by one and has the same on-off state as the corresponding grounding switch.

[0075] For example, Fig.15 A circuit diagram of another power transmission system provided by an embodiment of the present invention, Fig.16 A circuit diagram of another control loop provided by an embodiment of the present invention, wherein: Fig.15 The control circuit is omitted. Fig.16 The control loop shown is Fig.15 The control loop in the power transmission system shown in the figure is combined with Fig.15 and Fig.16 In this embodiment, the electric lock body of the locking structure adopts a combination of a telescopic lock rod, an electromagnetic coil and an armature. The electromagnetic coil is used as a control signal receiving component and is connected to the control circuit 1400. The power transmission system 1300 includes two busbars, a first busbar 1M and a second busbar 2M, and four transmission branches, a first transmission branch L1, a second transmission branch L2, a third transmission branch L3 and a fourth transmission branch L4, and a first grounding knife switch J10 corresponding to the first busbar 1M and a second grounding knife switch J20 corresponding to the second busbar 2M. The first single-side knife switch G51 corresponding to the first busbar 1M, the bus tie switch DL5 and the second single-side knife switch G52 corresponding to the second busbar 2M are also connected in series between the two busbars.

[0076] In addition, the power transmission system 1300 in this embodiment also includes the following devices or components, which are described in detail here. The first transmission branch switch DL1 is a power supply switch on the first transmission branch L1, the first branch switch G11 is a transmission branch switch on the first bus side of the first transmission branch L1, and the second branch switch G12 is a transmission branch switch on the second bus side of the first transmission branch. The second transmission branch switch DL2 is a power supply switch on the second transmission branch L2, the first branch switch G21 is a transmission branch switch on the first bus side of the second transmission branch L2, and the second branch switch G22 is a transmission branch switch on the second bus side of the second transmission branch L2. The third transmission branch switch DL3 is the power supply switch on the third transmission branch L3, the three-branch one switch G31 is the transmission branch switch on the first bus side of the third transmission branch L3, and the three-branch two switch G32 is the transmission branch switch on the second bus side of the third transmission branch L3. The fourth transmission branch switch DL4 is the power supply switch on the fourth transmission branch L4, the four-branch one switch G41 is the transmission branch switch on the first bus side of the fourth transmission branch L4, and the four-branch two switch G42 is the transmission branch switch on the second bus side of the fourth transmission branch L4. The first voltage transformer PT1 is the voltage transformer corresponding to the first bus 1M, and the first transformer switch GPT1 is a transformer switch arranged between the first bus 1M and the first voltage transformer PT1. The second voltage transformer PT2 is a voltage transformer corresponding to the second bus 2M, and the second transformer switch GPT2 is a transformer switch arranged between the second bus 2M and the second voltage transformer PT2. The first grounding device J10-D is a grounding device with a locking function corresponding to the first grounding switch JI0, and the second grounding device J20-D is a grounding device with a locking function corresponding to the second grounding switch J20.

[0077] Here, the components of the control circuit 1400 are further explained in detail. The positive pole of the power supply +KM is the positive terminal of the grounded control power supply of the electromagnetic lock control circuit, and the negative pole of the power supply -KM is the negative terminal of the grounded control power supply of the electromagnetic lock control circuit. The grounded control power supply refers to a power supply device that provides DC power for the control circuit. The first air switch ZK1 is a loop power supply air switch. When the first air switch ZK1 is in the closed position, the first normally open contact ZK11-2 and the second normally open contact ZK1 3-4 of the first air switch ZK1 are both closed, that is, the grounded control power supply is closed. When the first air switch ZK1 is in the open position, the first normally open contact ZK1 1-2 and the second normally open contact ZK1 3-4 of the air switch ZK1 are both disconnected, that is, the grounded control power supply is disconnected.

[0078] The first grounding contact J10 1-2 is the normally open contact of the first grounding knife switch J10. When the first grounding knife switch J10 is in the closed position, the first grounding contact J10 1-2 is closed, and when the first grounding knife switch J10 is in the open position, the first grounding contact J10 1-2 is open. A branch-knife switch contact G11 1-2 is a normally closed contact with a branch-knife switch G11. When a branch-knife switch G11 is in the open position, a branch-knife switch contact G11 1-2 is closed. When a branch-knife switch G11 is in the closed position, a branch-knife switch contact G11 1-2 is open. A second branch-knife switch contact G21 1-2 is a normally closed contact with a second branch-knife switch G21. When a second branch-knife switch G21 is in the open position, a second branch-knife switch contact G211-2 is closed. When the two-branch one-knife switch G21 is in the closed position, the two-branch one-knife switch contact G21 1-2 is disconnected. The three-branch one-knife switch contact G31 1-2 is a normally closed contact with the three-branch one-knife switch G31. When the three-branch one-knife switch G31 is in the open position, the three-branch one-knife switch contact G31 1-2 is closed. When the three-branch one-knife switch G31 is in the closed position, the three-branch one-knife switch contact G31 1-2 is disconnected. The four-branch one-knife switch contact G41 1-2 is a normally closed contact with the four-branch one-knife switch G41. When the four-branch one-knife switch G41 is in the open position, the four-branch one-knife switch contact G41 1-2 is closed. When the four-branch one-knife switch G41 is in the closed position, the four-branch one-knife switch contact G41 1-2 is disconnected.

[0079] The first single-sided contact G51 1-2 is the normally closed contact of the first single-sided knife switch G51. When the first single-sided knife switch G51 is in the open position, the first single-sided contact G51 1-2 is closed. When the first single-sided knife switch G51 is in the closed position, the first single-sided contact G51 1-2 is disconnected. The second single-sided contact G52 1-2 is the normally closed contact of the second single-sided knife switch G52. When the second single-sided knife switch G52 is in the open position, the second single-sided contact G52 1-2 is closed. When the second single-sided knife switch G52 is in the closed position, the second single-sided contact G52 1-2 is disconnected. The first transformer contact GPT1 1-2 is the normally closed contact of the first transformer knife switch GPT1. When the first transformer knife switch GPT1 is in the open position, the first transformer contact GPT1 1-2 is closed, and when the first transformer knife switch GPT1 is in the closed position, the first transformer contact GPT1 1-2 is disconnected.

[0080] The second grounding contact J20 1-2 is the normally open contact of the second grounding knife switch J20. When the second grounding knife switch J20 is in the closed position, the second grounding contact J20 1-2 is closed. When the second grounding knife switch J20 is in the open position, the second grounding contact J20 1-2 is open. The second branch knife switch contact G12 1-2 is the normally closed contact of the second branch knife switch G12. When the second branch knife switch G12 is in the open position, the second branch knife switch contact G12 1-2 is closed. When the second branch knife switch G12 is in the closed position, the second branch knife switch contact G12 1-2 is open. The second branch knife switch contact G22 1-2 is the normally closed contact of the second branch knife switch G22. When the second branch knife switch G22 is in the open position, the second branch knife switch contact G22 1-2 is closed. When the two-branch two-knife switch G22 is in the closed position, the two-branch two-knife switch contact G22 1-2 is disconnected. The three-branch two-knife switch contact G32 1-2 is the normally closed contact of the three-branch two-knife switch G32. When the three-branch two-knife switch G32 is in the open position, the three-branch two-knife switch contact G32 1-2 is closed. When the three-branch two-knife switch G32 is in the closed position, the three-branch two-knife switch contact G32 1-2 is disconnected. The four-branch two-knife switch contact G42 1-2 is the normally closed contact of the four-branch two-knife switch G42. When the four-branch two-knife switch G42 is in the open position, the four-branch two-knife switch contact G42 1-2 is closed. When the four-branch two-knife switch G42 is in the closed position, the four-branch two-knife switch contact G42 1-2 is disconnected.

[0081] The second single-sided contact G52 1-2 is the normally closed contact of the second single-sided knife switch G52. When the second single-sided knife switch G52 is in the open position, the second single-sided contact G52 1-2 is closed, and when the second single-sided knife switch G52 is in the closed position, the second single-sided contact G52 1-2 is disconnected. The second transformer contact GPT2 1-2 is the normally closed contact of the second transformer knife switch GPT2. When the second transformer knife switch GPT2 is in the open position, the second transformer contact GPT2 1-2 is closed, and when the second transformer knife switch GPT2 is in the closed position, the second transformer contact GPT2 1-2 is disconnected.

[0082] The first coil RL1 is an electromagnetic coil in the grounding device with a locking function corresponding to the first busbar 1M. When the first coil RL1 is energized, the armature corresponding to the coil is attracted to release the locking of the locking plate in the grounding device with a locking function corresponding to the first busbar 1M. When the second coil RL2 loses power, the armature corresponding to the coil is reset to achieve the locking of the locking plate in the grounding device with a locking function corresponding to the second busbar 2M. The second coil RL2 is an electromagnetic coil in the grounding device with a locking function corresponding to the second busbar 2M. When the second coil RL2 is energized, the armature corresponding to the coil is attracted to release the locking of the locking plate in the grounding device with a locking function corresponding to the second busbar 2M. When the second coil RL2 loses power, the armature corresponding to the coil is reset to achieve the locking of the locking plate in the grounding device with a locking function corresponding to the second busbar 2M.

[0083] Here, the control principle of the control circuit 1400 is further explained in detail. For the grounding device J10-D with a locking function of the first bus 1M, when one of the following conditions is met, the electromagnetic coil of the grounding device corresponding to the bus is energized and the locking plate is unlocked: 1) When the first bus 1M is in the maintenance state, the grounding control power supply of the control circuit is energized, the first air switch ZK1 is in the closed position, and the first grounding knife switch J10 is in the closed position, so that the electromagnetic coil in the grounding device J10-D with a locking function corresponding to the first bus is energized. In this state, the action process of the control circuit is the first process, that is, "power supply positive pole +KM→first normally open contact ZK1 1-2→first grounding contact J10 1-2→first coil RL1→second normally open contact ZK1 3-4→power supply negative pole -KM", where the "→" mark indicates that the conduction direction is from the left node of the arrow to the right node. 2) When the first bus 1M is in cold standby state, the grounding control power supply of the control circuit is energized, the first air switch ZK1 is in the closed position, a knife switch G11 of one branch is in the open position, a knife switch G21 of the second branch is in the open position, a knife switch G31 of the third branch is in the open position, a knife switch G41 of the fourth branch is in the open position, the first single-sided knife switch G51 is in the open position and the first transformer knife switch GPT1 is in the open position, the electromagnetic coil in the grounding device J10-D with locking function corresponding to the first bus is energized. In this state, the action process of the control circuit is the second process, that is, "positive pole of power supply +KM→first normally open contact ZK1 1-2→one branch one knife switch contact G11 1-2→two branch one knife switch contact G21 1-2→three branch one knife switch contact G31 1-2→four branch one knife switch contact G41 1-2→first single-sided contact G511-2→first transformer contact GPT11-2→first coil RL1 1-2→second normally open contact ZK1 3-4→negative pole of power supply -KM".

[0084] Similar to the grounding device J10-D with locking function of the first bus 1M, for the grounding device J120-D with locking function of the second bus 2M, when one of the following conditions is met, the electromagnetic coil of the grounding device corresponding to the bus is energized and the locking plate is unlocked: 1) When the second bus 2M is in the maintenance state, the grounding control power supply of the control circuit is energized, the first air switch ZK1 is in the closed position, and the second grounding knife switch J20 is in the closed position, so that the electromagnetic coil in the grounding device J20-D with locking function corresponding to the second bus is energized. In this state, the action process of the control circuit is the third process, that is, "power supply positive pole +KM→first normally open contact ZK1 1-2→second grounding contact J20 1-2→second coil RL2→second normally open contact ZK1 3-4→power supply negative pole -KM", where the "→" mark indicates that the action direction is from the left node of the arrow to the right node. 2) When the second bus 2M is in cold standby state, the grounding control power supply of the control circuit is energized, the first air switch ZK1 is in the closed position, the second switch G12 of one branch is in the open position, the second switch G22 of the second branch is in the open position, the second switch G32 of the third branch is in the open position, the second switch G42 of the fourth branch is in the open position, the second single-sided switch G52 is in the open position and the second transformer switch GPT2 is in the open position, the electromagnetic coil in the grounding device J20-D with locking function corresponding to the second bus 2M is energized. In this state, the action process of the control circuit is the fourth process, namely "positive pole of power supply +KM→first normally open contact ZK1 1-2→two knife switch contacts of one branch G12 1-2→two knife switch contacts of two branches G22 1-2→two knife switch contacts of three branches G32 1-2→two knife switch contacts of four branches G42 1-2→second single-sided contact G52 1-2→second transformer contact GPT2 1-2→second coil RL2 1-2→second normally open contact ZK1 3-4→negative pole of power supply -KM".

[0085] The present invention provides a power transmission system and a grounding device with a locking function, wherein the grounding device includes a grounding pile, a locking plate and a locking structure. The first end of the grounding pile is connected to the ground grid, and the second end of the grounding pile is provided with a pin hole penetrating the side of the pile body, wherein the aperture of the pin hole is larger than the cross-sectional diameter of the end pin of the grounding wire; the guide device in the locking structure is movably engaged with the locking plate, and the guide device is used to limit the locking plate to move only in the first direction, wherein the first direction is perpendicular to the penetrating direction of the pin hole; the electric lock body in the locking structure is used to lock or release the locking plate according to the control signal; the locked locking plate is fixed in position and tightly attached to the pin hole, so that the end pin of the grounding wire cannot pass through the pin hole; and the released locking plate can be moved away in the first direction and avoid the pin hole, so that the end pin of the grounding wire can pass through the pin hole, thereby realizing the physical locking of the grounding pile and avoiding the erroneous operation caused by the maintenance personnel illegally unlocking the five-protection lock or skipping the five-protection of the microcomputer.

[0086] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A grounding device with locking function, characterized in that: The grounding device with locking function is used in conjunction with a grounding wire; The grounding device with locking function comprises: A grounding pile, wherein the first end of the grounding pile is connected to the ground grid, and the second end of the grounding pile is provided with a pin hole penetrating the side of the pile body, wherein the hole diameter of the pin hole is larger than the cross-sectional diameter of the end pin of the grounding wire; A locking plate and a locking structure, wherein the locking structure comprises a guide device and an electric lock body, wherein the guide device is movably engaged with the locking plate, and the guide device is used to limit the locking plate to move only along a first direction, wherein the first direction is perpendicular to the penetration direction of the pin hole; the electric lock body is used to lock or release the locking plate according to a control signal; after being locked, the locking plate is fixed in position and tightly attached to the pin hole, so that the end pin of the grounding wire cannot pass through the pin hole; and after being released, the locking plate can be moved away along the first direction and avoid the pin hole, so that the end pin of the grounding wire can pass through the pin hole.

2. The grounding device with locking function according to claim 1, characterized in that: The grounding device with locking function is used in conjunction with the grounding wire and the five-protection padlock; The locking plate is provided with a five-proof padlock hole which passes through the front and back of the plate body, and the hole diameter of the five-proof padlock hole is larger than the cross-sectional diameter of the locking rod of the five-proof padlock and smaller than the cross-sectional diameter of the end through-pin; wherein, after being locked, the position of the locking plate is fixed and the five-proof padlock hole thereon is directly opposite to and tightly attached to the through-pin hole, so that the five-proof padlock can pass through the five-proof padlock hole and the through-pin hole in sequence.

3. The grounding device with locking function according to claim 1, characterized in that: The electric lock body comprises a telescopic lock rod and a control component, wherein the control component is connected to the telescopic lock rod, and the control component is used to switch the telescopic lock rod to pop out and retract according to the control signal; The locking plate is provided with a locking hole that matches the cross-sectional shape of the telescopic locking rod, and the drilling direction of the locking hole is perpendicular to the first direction; When the locking plate is locked, the control component controls the telescopic locking rod to pop out and embed into the locking hole, so that the locking plate is fixed and fits tightly against the pin hole, so that the end pin of the grounding wire cannot pass through the pin hole; When the locking plate is released, the control assembly controls the telescopic locking rod to retract from the locking hole, so that the locking plate can move along the first direction to avoid the pin hole.

4. The grounding device with locking function according to claim 3, characterized in that: The control component includes a motor and a transmission structure; the transmission structure is connected to the telescopic locking rod, and the transmission structure is used to drive the telescopic locking rod to perform corresponding actions according to the power provided by the motor.

5. The grounding device with locking function according to claim 3, characterized in that: The control assembly includes an electromagnetic coil and an armature; The armature is connected to the root of the telescopic locking rod, and the armature is used to drive the telescopic locking rod to perform corresponding actions according to the power provided by the electromagnetic coil.

6. The grounding device with locking function according to any one of claims 1 to 5, characterized in that: The guide device includes a guide plate, on which a guide hole is arranged, and the guide hole passes through the front and back sides of the guide plate and the penetration direction is the first direction; the hole cross-section of the guide hole is adapted to the cross-section of the locking plate, so that the locking plate can be nested in the guide hole and can only move along the penetration direction of the guide hole.

7. The grounding device with locking function according to claim 6, characterized in that: The locking plate includes a main board and an end plate, and the main board is movably engaged with the guide device; the extension direction of the main board is the first direction and is perpendicular to the extension direction of the end plate, the first end of the main board is used to fit the pin hole, and the second end of the main board is fixedly connected to the end plate; the end plate is used to overlap the guide plate or the electric lock body when the main board moves to a preset position along the first direction, so as to limit the range in which the locking plate can move along the first direction.

8. The grounding device with locking function according to claim 7, characterized in that: It also includes an elastic element, one end of which is connected to the front side of the end plate, and the other end of which is connected to the front side of the guide plate, wherein the front side of the end plate is a side connected to the main plate, and the front side of the guide plate is a side opposite to the front side of the end plate; When the elastic element is in a natural state, the locking plate is in a preset position, so that the end pin of the grounding wire cannot pass through the pin hole, wherein the preset position is a position where the locking plate can completely block the pin hole during movement along the first direction; when the elastic element is in a maximum stretched state, the locking plate completely avoids the pin hole, so that the end pin of the grounding wire can pass through the pin hole.

9. A power transmission system, characterized in that: include: At least one busbar, and a transformer switch, a transmission branch switch, a control circuit and a grounding device with a locking function as described in any one of claims 1 to 8 corresponding to the busbar; The transformer switch is arranged between the corresponding busbar and the voltage transformer; The power transmission branch switch is arranged between the corresponding busbar and the power transmission branch; The locking structure and the control branch in the grounding device with locking function are connected in series between the positive and negative electrodes of the grounding control power supply to form the control loop; the locking structure is used to release or lock the locking plate according to the presence or absence of a control signal on the corresponding control loop; Among them, the control branch includes a first branch connected in series with a first contact and a second contact, the first contact is opposite to the on-off state of the corresponding transformer switch, and the second contact is opposite to the on-off state of the transmission branch switch.

10. The power transmission system according to claim 9, characterized in that: Also includes: At least one grounding switch corresponding to the busbar; The control branch also includes a second branch connected in parallel with the first branch, and the second branch includes at least one third contact connected in parallel. The third contact corresponds one-to-one with the grounding switch and has the same on-off state as the corresponding grounding switch.

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