Line grounding knife-switch device
By designing a line grounding knife switch device, the circuit grounding is achieved by using the electrical contact between the rotating rod and the switch knife, which solves the problems of complex operation and low efficiency in the prior art, and improves the efficiency and safety of grounding operation.
Patent Information
- Application Number
- CN202411717613.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-01-07
AI Technical Summary
In the prior art, line grounding operation is complex and has low efficiency and safety. It requires high-rise operation for hooking, and phase-by-phase operation efficiency and safety are insufficient.
A line grounding knife switch device is designed, including a frame body, a rotating rod, an opening and closing seat, a switch knife, a grounding member and an operating rod. By rotating the rotating rod, the switch knife is rotated from a second predetermined position to a first predetermined position and the switch is opened. The joint seat is electrically contacted to achieve grounding between the line and the ground. The setting of the operating lever improves safety and difficulty, and prevents unauthorized personnel from operating.
It realizes the simplicity and convenience of line grounding operation, improves efficiency, and enhances safety through the design of the operating lever, prevents unexpected situations, and ensures stability and safety after grounding.
Smart Images
Figure CN119275032A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of power system safety protection, and in particular to a line grounding switch device. Background Art
[0002] Low-voltage grounding is a vital safety protection measure. It is widely used in various operations in the power system. When a fault occurs in the power system, low-voltage grounding can perform necessary grounding isolation on the faulty line, thereby ensuring the normal operation of other parts of the power system. In addition, when performing low-point operations, temporary grounding measures can effectively protect the lives of operators and protect power facilities from damage. In the current grounding method, operators usually need to climb to a height to perform hanging operations, and in order to ensure safety, this process often needs to be carried out in a power-off state. This method not only increases the complexity of the operation, but also requires operators to have a high level of business, and the phase-by-phase operation method has low efficiency and safety. Summary of the invention
[0003] In order to solve the problems in the prior art of complex grounding operation and low safety and efficiency, the present invention provides a line grounding knife switch device.
[0004] The line grounding knife switch device provided in the present application includes a frame, a rotating rod, an opening and closing seat, a knife, a grounding piece and an operating rod, wherein the rotating rod is rotatably connected to the frame, and the rotating rod includes a first part and a second part, and the first part is connected to the second part; the opening and closing seat is fixed to the frame, and the opening and closing seat is used to electrically connect the line that needs to be grounded; the knife is movably connected to the second part, and the knife can move from a first predetermined position to a second predetermined position following the rotating rod; the grounding piece is electrically connected to the knife, and the grounding piece is used for grounding; the operating rod can be selectively connected to the rotating rod to rotate the rotating rod; wherein, when the knife is in the first predetermined position, the knife is electrically connected to the opening and closing seat, and when the knife is in the second predetermined position, the knife is electrically disconnected from the opening and closing seat.
[0005] In some embodiments, the operating rod includes a clamping portion, a radial portion and a gripping portion, wherein the clamping portion and the gripping portion are respectively disposed at opposite ends of the radial portion, and the radial portion is a multi-stage telescopic structure;
[0006] The first part is provided with a clamping head, and the clamping head can be selectively clamped with the clamping part.
[0007] In some embodiments, the engaging portion is provided with a key, the engaging head is provided with a lock structure, and the key matches the lock structure;
[0008] The lock structure can be selectively engaged and locked with the engaging head, and the key can control the lock structure to switch between a locked state and a disengaged state;
[0009] Wherein, when the lock structure is in a locked state, the lock structure is locked with the engaging head, and the lock structure can drive the engaging head to rotate; when the lock structure is in a disengaged state, the lock structure is disengaged from the engaging head.
[0010] In some embodiments, a lever mechanism is provided between the gate knife and the second part, and the first part drives the gate knife to move from a first predetermined position to a second predetermined position through the lever mechanism.
[0011] In some embodiments, the switch includes a plurality of conductive plates, the plurality of conductive plates are used to be connected one-to-one with a plurality of lines in a three-phase line, and the plurality of conductive plates are arranged in parallel and move synchronously.
[0012] In some embodiments, the line grounding switch device further includes an electrical testing mechanism, and the electrical testing mechanism is used to be electrically connected to the live wire.
[0013] In some embodiments, the electrical testing mechanism includes a conductive member and an insulating cover, the conductive member is used to be electrically connected to the live wire, and the insulating cover is disposed on the conductive member.
[0014] In some embodiments, the line grounding knife switch device also includes a protective component, the protective component has an assembly cavity inside, and the frame, the rotating rod, the opening and closing seat, the knife, the grounding piece and the electrical testing mechanism are all arranged in the assembly cavity.
[0015] In some embodiments, a wiring port is provided on the surface of the protection component, and the wiring port is used to pass a line.
[0016] In some embodiments, an insulating ring is provided at the edge of the wiring port, and the insulating ring covers the wiring port.
[0017] Compared with the prior art, the line grounding knife switch device of the embodiment of the present invention has the following beneficial effects: when the line needs to be grounded, the line grounding knife switch device provided by the present application only needs to rotate the rotating rod so that the knife follows the rotating rod to rotate from the second predetermined position to the first predetermined position. In the first predetermined position, the knife is in electrical contact with the opening and closing seat. Since the end of the knife away from the closing seat is connected to the grounding piece, at this time, the line to be grounded is connected to the earth through the opening and closing seat, the knife and the grounding piece to achieve the purpose of grounding. The above operation is simple and convenient, and the line can be quickly grounded without the need for the staff to climb up and connect the wires, which greatly improves the work efficiency of the line grounding operation. The setting of the operating rod can also improve the safety of the line grounding knife switch device; after the staff rotates the rotating rod, the operating rod can be taken away from the site. It is difficult for other personnel to rotate the rotating rod without the operating rod, which increases the difficulty for other personnel to rotate the rotating rod, thereby improving the stability and safety of the staff after grounding the line to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;
[0019] Figure 2 It is a schematic diagram of the overall structure when the switch provided in one embodiment of the present application is in the first predetermined position;
[0020] Figure 3 is a schematic diagram of the overall structure when the knife provided in one embodiment of the present application is in the second predetermined position;
[0021] Figure 4 It is a schematic diagram of the explosion structure of an embodiment of the present application;
[0022] Figure 5 is a schematic diagram of the matching structure of an embodiment of the operating lever provided by the present application;
[0023] Figure 6 It is a schematic diagram of the disassembly of the matching structure of an embodiment of the operating lever provided in the present application.
[0024] 11. Frame; 12. Rotating rod; 121. First part; 01. Engaging head; 002. Lock structure; 122. Second part; 13. Opening and closing seat; 14. Lever mechanism; 15. Switch; 151. Conductive sheet; 16. Grounding piece; 17. Operating rod; 171. Engaging part; 001. Key; 172. Radial part; 173. Gripping part; 18. Electricity testing mechanism; 181. Conductive part; 182. Insulating cover; 19. Protective component; 02. Assembly cavity; 03. Wiring port; 191. Insulating ring. DETAILED DESCRIPTION
[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.
[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0027] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, or are the orientation or positional relationship in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0028] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4The line grounding knife switch device shown in the figure includes a frame 11, a rotating rod 12, an opening and closing seat 13, a knife 15 and a grounding member 16. The rotating rod 12 is rotatably connected to the frame 11. The rotating rod 12 includes a first part 121 and a second part 122. The first part 121 is connected to the second part 122. The first part 121 is used to rotate the rotating rod 12 under the action of an external force, and the second part 122 is used to connect other components; the opening and closing seat 13 is fixed to the frame 11, and the opening and closing seat 13 is used to electrically connect the A grounding circuit; the knife 15 is movably connected to the second portion 122, and the knife 15 can move from a first predetermined position to a second predetermined position following the rotating rod 12; the grounding member 16 is electrically connected to the knife 15, and the grounding member 16 is used for grounding; the operating rod 17 can be selectively connected to the rotating rod 12 to rotate the rotating rod 12; wherein, when the knife 15 is in the first predetermined position, the knife 15 is electrically connected to the opening and closing seat 13, and when the knife 15 is in the second predetermined position, the knife 15 is electrically disconnected from the opening and closing seat 13. Through the above design, when it is necessary to ground the line, the staff only needs to connect the operating rod with the rotating rod, and then rotate the operating rod to drive the rotating rod 12 to rotate, so that the knife 15 follows the rotating rod 12 to rotate from the second predetermined position to the first predetermined position. In the first predetermined position, the knife 15 is in electrical contact with the opening and closing seat 13. Since the end of the knife 15 away from the closing seat 13 is connected to the grounding piece 16, at this time, the line that needs to be grounded is connected to the earth through the opening and closing seat 13, the knife 15 and the grounding piece 16 to achieve the purpose of grounding. The above operation is simple and convenient, and the staff can quickly perform grounding operations on the line without having to climb up and connect the wires, which greatly improves the work efficiency of the line grounding operation.
[0032] In addition to the above effects, the setting of the operating rod 17 can also improve the safety of the line grounding knife switch device, as follows: if you want to rotate the rotating rod by manpower, you need to use the operating rod 17 to connect with the rotating rod 12 before you can easily rotate the rotating rod 12. After rotating the rotating rod 12, the staff can take the operating rod 17 away from the scene. It is difficult for other personnel to rotate the rotating rod 12 without the operating rod 17, which increases the difficulty for other personnel to rotate the rotating rod 12, thereby improving the stability and safety of the staff after grounding the line to a certain extent.
[0033] The following will introduce the technical details of each component one by one.
[0034] In some embodiments, Figure 1 , Figure 2 , Figure 3As shown, the above-mentioned operating rod 17 includes a snap-fit portion 171, a radial portion 172 and a gripping portion 173. The snap-fit portion 171 and the gripping portion 173 are respectively arranged at opposite ends of the radial portion 172. The radial portion 172 is a multi-stage telescopic structure. The snap-fit portion 171 is used to snap with the rotating rod 12, and the gripping portion 173 is used for the staff to grip. The radial portion 172 can be telescopic. When the rotating lever is rotated, the radial portion 172 is extended to obtain a longer force arm, which makes it more labor-saving when rotating the rotating rod 12. When it is carried and stored, the radial portion 172 is contracted to facilitate carrying and storage.
[0035] It can be understood that the gripping portion 173 is provided with an ergonomic structure to facilitate the staff to grip and improve the comfort when gripping.
[0036] The first portion 121 is provided with a snap-fit head 01, which can be selectively snap-fitted with the snap-fit portion 171. When the snap-fit head 01 is snap-fitted with the snap-fit portion 171, the rotating rod 12 can be rotated by the operating rod 17.
[0037] In some embodiments, Figure 5 , Figure 6 As shown, the above-mentioned engaging portion 171 is provided with a key 001, and the engaging head 01 is provided with a lock structure 002, and the key 001 matches the lock structure 002; the lock structure 002 can be selectively engaged and locked with the engaging head 01, and the key 001 can control the lock structure 002 to switch between a locked state and a disengaged state; specifically, the key 001 can be inserted into the lock hole of the lock structure 002, and the lock structure 002 can be switched between a locked state and a disengaged state by rotation; wherein, when the lock structure 002 is in a locked state, the lock structure 002 is engaged and locked with the engaging head 01, and the lock structure 002 and the engaging head 01 are locked as a whole, and when the lock structure 002 rotates driven by the key 001, the engaging head 01 can be driven to rotate, and when the lock structure 002 is in a disengaged state, the lock structure 002 is disengaged from the engaging head 01. Through the design of the above-mentioned key and lock structure, the correspondence between the operating rod 17 and the rotating rod 12 is further enhanced, so that if other personnel want to rotate the rotating rod 12, they need to lock the lock structure 002 and the engaging head 01 together. In the absence of the key 001, other personnel cannot engage and lock the lock structure 002 with the rotating rod 12, and thus cannot rotate the rotating rod 12, which further improves the stability and safety of the staff after grounding the line.
[0038] In some embodiments, Figure 2 , Figure 3 , Figure 4As shown, a lever mechanism 14 is provided between the above-mentioned knife 15 and the second part 122, and the first part 121 drives the knife 15 to move from the first predetermined position to the second predetermined position through the lever mechanism 14. The lever mechanism 14 can make it easier for the rotating rod 12 to drive the knife 15 to move. In actual use, under the action of the lever mechanism 14, the rotating rod 12 is the labor-saving end, and the knife 15 is the labor-intensive end. When the rotating rod 12 rotates, it is easy to drive the knife 15 to move, but the knife 15 is not easy to cause the rotating rod 12 to rotate, so that external factors cannot affect the state position of the knife 15 through the knife 15, and the position of the knife 15 can only be changed by rotating the rotating rod 12, thereby reducing the occurrence of accidents.
[0039] In some embodiments, Figure 1 , Figure 2 , Figure 3 As shown, the switch 15 includes a plurality of conductive sheets 151, which are used to be connected to a plurality of lines in the three-phase line in a one-to-one correspondence, and the plurality of conductive sheets 151 are arranged in parallel and move synchronously. Through the above design, since the plurality of conductive sheets 151 are connected to each line in the three-phase line in a one-to-one correspondence and move synchronously, the grounding operation of the multi-phase lines can be performed simultaneously by rotating the rotating rod 12, without the need to ground each phase, which greatly improves the difficulty and complexity of the grounding operation.
[0040] In some embodiments, Figure 1 , Figure 2 , Figure 3 As shown, the line grounding switch device provided by the present application also includes an electric test mechanism 18, which is used to be electrically connected to the live wire. After the line grounding switch device grounds the line, the staff can use the electric tester to detect whether the grounding is good through the electric test mechanism 18, thereby further ensuring the effectiveness and stability of the line grounding.
[0041] In some embodiments, Figure 4 As shown, the above-mentioned electric testing mechanism 18 includes a conductive member 181 and an insulating cover 182. The conductive member 181 is used to be electrically connected to the live wire, and the insulating cover 182 is covered on the conductive member 181. The insulating cover 182 can cover the conductive member 181 to prevent the conductive member 181 from being exposed and causing safety hazards.
[0042] In some embodiments, Figure 1 , Figure 2 , Figure 3As shown, the line grounding knife switch device provided by the present application also includes a protective component 19, an assembly cavity 02 is opened inside the protective component 19, and the frame 11, the rotating rod 12, the opening and closing seat 13, the knife 15, the grounding member 16 and the electric testing mechanism 18 are all arranged in the assembly cavity 02. In actual use, the line grounding knife switch device is usually set outdoors, and the protective component 19 can protect the internal circuit components to prevent rain and other debris in the external environment from interfering with the circuit components and causing malfunctions or even safety accidents.
[0043] In some embodiments, Figure 2 , Figure 3 As shown, a wiring port 03 is provided on the surface of the protection component 19, and the wiring port 03 is used for threading a line. The wiring port 03 is used to facilitate the line threading and connection work of the line grounding knife switch device.
[0044] In some embodiments, Figure 2 , Figure 3 As shown, an insulating ring 191 is provided at the edge of the wiring port 03, and the insulating ring 191 covers the wiring port 03. Generally, the protection component 19 is made of metal material, and the insulating ring 191 can prevent the line from directly contacting the protection component 19, thereby greatly enhancing the insulation between the line and the protection component 19, and ensuring the safety of the operator's operation.
[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. The line grounding switch device is characterized by: include: Frame (11); A rotating rod (12), the rotating rod (12) being rotatably connected to the frame (11), the rotating rod (12) comprising a first portion (121) and a second portion (122), the first portion (121) being connected to the second portion (122); An opening and closing seat (13), the opening and closing seat (13) is fixed to the frame (11), and the opening and closing seat (13) is used to electrically connect a circuit that needs to be grounded; A gate knife (15), the gate knife (15) being movably connected to the second part (122), and the gate knife (15) being movable along with the rotating rod (12) from a first predetermined position to a second predetermined position; A grounding member (16), the grounding member (16) being electrically connected to the switch (15), and the grounding member (16) being used for grounding; an operating rod (17), wherein the operating rod (17) is selectively connected to the rotating rod (12) to rotate the rotating rod (12); Wherein, when the knife switch (15) is in the first predetermined position, the knife switch (15) is electrically connected to the opening and closing seat (13); when the knife switch (15) is in the second predetermined position, the knife switch (15) is electrically disconnected from the opening and closing seat (13).
2. The line grounding switch device according to claim 1, characterized in that: The operating rod (17) comprises a clamping portion (171), a radial portion (172) and a gripping portion (173), wherein the clamping portion (171) and the gripping portion (173) are respectively arranged at opposite ends of the radial portion (172), and the radial portion (172) is a multi-stage telescopic structure; The first part (121) is provided with a snap-fit head (01), and the snap-fit head (01) can be selectively snap-fitted with the snap-fit part (171).
3. The line grounding switch device according to claim 2, characterized in that: The engaging portion (171) is provided with a key (001), the engaging head (01) is provided with a lock structure (002), and the key (001) matches the lock structure (002); The lock structure (002) can be selectively engaged with the engaging head (01) to be locked, and the key (001) can control the lock structure (002) to switch between a locked state and a disengaged state; When the lock structure (002) is in a locked state, the lock structure (002) is locked with the locking head (01), and the lock structure (002) can drive the locking head (01) to rotate; when the lock structure (002) is in a disengaged state, the lock structure (002) is disengaged from the locking head (01).
4. The line grounding switch device according to claim 1, characterized in that: A lever mechanism (14) is provided between the gate knife (15) and the second part (122), and the first part (121) drives the gate knife (15) to move from a first predetermined position to a second predetermined position through the lever mechanism (14).
5. The line grounding switch device according to claim 1, characterized in that: The switch (15) comprises a plurality of conductive sheets (151), the plurality of conductive sheets (151) being used for one-to-one connection with a plurality of lines in a three-phase line, and the plurality of conductive sheets (151) being arranged in parallel and moving synchronously.
6. The line grounding switch device according to claim 1, characterized in that: The line grounding switch device also includes an electric testing mechanism (18), and the electric testing mechanism (18) is used for being electrically connected to the live wire.
7. The line grounding switch device according to claim 6, characterized in that: The electrical testing mechanism (18) comprises a conductive member (181) and an insulating cover (182); the conductive member (181) is used to be electrically connected to a live wire, and the insulating cover (182) is disposed on the conductive member (181).
8. The line grounding switch device according to claim 6, characterized in that: The line grounding knife switch device also includes a protection component (19), an assembly cavity (02) is provided inside the protection component (19), and the frame (11), the rotating rod (12), the opening and closing seat (13), the knife switch (15), the grounding member (16) and the electric testing mechanism (18) are all arranged in the assembly cavity (02).
9. The line grounding switch device according to claim 8, characterized in that: A wiring port (03) is provided on the surface of the protection component (19), and the wiring port (03) is used for passing a line.
10. The line grounding switch device according to claim 9, characterized in that: An insulating ring (191) is provided on the edge of the wiring port (03), and the insulating ring (191) covers the wiring port (03).