Maintenance isolation auxiliary device and maintenance isolation control method

Abstract

The invention discloses a maintenance isolation auxiliary device and a maintenance isolation control method, and belongs to the technical field of power equipment. The maintenance isolation auxiliary device comprises a positioning unit which comprises a substrate; the two first clamping units each comprise a clamping piece, and the two clamping pieces are arranged on the base plate in a spaced mode and can be close to or away from each other in the first direction; the second clamping unit comprises a mounting base, a first clamping jaw and a second clamping jaw, the first clamping jaw is fixedly arranged on the mounting base, and the second clamping jaw is arranged on the mounting base and can be close to or away from the first clamping jaw in the first direction; the middle switching unit comprises a first switching piece and a second switching piece which are connected through a spherical hinge, the end, away from the second switching piece, of the first switching piece is connected with the base plate, and the end, away from the first switching piece, of the second switching piece is connected with the mounting base. According to the invention, the transmission rod is locked to limit the rotation of the transmission rod during power-off maintenance of the grounding knife-switch, so that misoperation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to a maintenance isolation auxiliary device and a maintenance isolation control method. Background Art

[0002] The grounding knife is an important component in the power system. The full name of the grounding knife is the grounding switch knife. According to the requirements of the "five protections" of the power system, the grounding knife can only be closed when the equipment is under maintenance, the circuit breaker and the disconnector are disconnected, which is equivalent to a grounding wire. During normal operation, the grounding knife must be disconnected.

[0003] However, since there is no mechanical interlocking device on the transmission rod of the grounding switch, during the maintenance process, there is a risk of manually operating the switch operating box to cause the transmission rod mechanism to rotate due to misjudgment, which seriously affects the life safety of maintenance personnel.

[0004] Therefore, there is an urgent need to provide a maintenance isolation auxiliary device and a maintenance isolation control method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a maintenance isolation auxiliary device and a maintenance isolation control method, which can lock a transmission rod to restrict its rotation when the grounding switch is powered off for maintenance, so as to avoid misoperation.

[0006] In order to achieve the above objectives, the following technical solutions are provided:

[0007] Maintenance isolation auxiliary device, including:

[0008] A positioning unit, including a base plate;

[0009] Two first clamping units each comprising a clamping piece, wherein the two clamping pieces are arranged on the substrate at intervals and can approach or move away from each other along a first direction;

[0010] A second clamping unit comprises a mounting seat, a first clamping jaw and a second clamping jaw, wherein the first clamping jaw is fixedly disposed on the mounting seat, and the second clamping jaw is disposed on the mounting seat and can approach or move away from the first clamping jaw along the first direction;

[0011] The intermediate adapter unit includes a first adapter and a second adapter connected by a ball joint, wherein one end of the first adapter away from the second adapter is connected to the base plate, and one end of the second adapter away from the first adapter is connected to the mounting seat.

[0012] As an optional solution for the maintenance isolation auxiliary device, a sliding rod is provided at one end of the clamping member, and the positioning unit further comprises;

[0013] Two positioning tubes are arranged on the base plate at intervals along the first direction, the sliding rods are passed through the positioning tubes, and the side walls of the positioning tubes are provided with threaded holes;

[0014] Two fixing bolts, one end of each fixing bolt is connected to the threaded hole and is stopped on the outer wall surface of the sliding rod.

[0015] As an optional solution of the maintenance isolation auxiliary device, the maintenance isolation auxiliary device also includes:

[0016] The height adjustment unit is arranged between the first adapter and the substrate.

[0017] As an optional solution for the maintenance isolation auxiliary device, the height adjustment unit includes a first rod and a second rod that are threadedly connected, one of the first rod and the second rod is connected to the first adapter, and the other of the first rod and the second rod is connected to the base plate.

[0018] As an optional solution for the maintenance isolation auxiliary device, the height adjustment unit includes a first cylinder body and a first telescopic member slidably arranged in the first cylinder body, one of the first cylinder body and the first telescopic member is connected to the first adapter, and the other of the first cylinder body and the first telescopic member is connected to the base plate.

[0019] As an optional solution for the maintenance isolation auxiliary device, the mounting seat has a receiving cavity, and the second clamping unit further includes:

[0020] A linear drive module is disposed in the accommodating cavity, and is used to drive the second clamping jaw to move along the first direction.

[0021] As an optional solution for the maintenance isolation auxiliary device, the mounting seat is provided with a guide hole, and the guide hole extends along the first direction.

[0022] As an optional solution for the maintenance isolation auxiliary device, the second clamping unit further includes:

[0023] A first length adjustment module is disposed between the first clamping jaw and the mounting seat, and the first length adjustment module is used to drive the first clamping jaw to extend and retract along a second direction;

[0024] A second length adjustment module, one end of the second length adjustment module is connected to the second clamping jaw, the other end of the second length adjustment module passes through the guide hole and is connected to the linear drive module, and the second length adjustment module is used to drive the second clamping jaw to extend and retract along the second direction.

[0025] As an optional solution for the maintenance isolation auxiliary device, a first rubber pad is provided on a side of the first clamping jaw facing the second clamping jaw, and a second rubber pad is provided on a side of the second clamping jaw facing the first clamping jaw.

[0026] The maintenance isolation control method, using the maintenance isolation auxiliary device as described above, comprises the following steps:

[0027] Clamping the two first clamping units of the maintenance isolation auxiliary device on the knife switch operating box;

[0028] The action switch feeds back the grounding switch status to the controller in real time;

[0029] When the grounding knife switch is switched from a closed power-on state to an open power-off state, the controller starts the linear drive module of the second clamping unit, and the first clamping jaw and the second clamping jaw clamp the transmission rod;

[0030] When the grounding switch is overhauled, the controller starts the linear drive module of the second clamping unit again, and the first clamping jaw and the second clamping jaw cooperate to release the transmission rod.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The maintenance isolation auxiliary device provided by the present invention installs the clamping parts of the two first clamping units on the base plate of the positioning unit, and the second clamping claw of the second clamping unit can cooperate with the first clamping claw to clamp or loosen. When the grounding knife switch is disconnected, the two first clamping units can be clamped on the knife switch operating box, and then the second clamping unit can be used to lock the transmission rod to avoid the rotation of the transmission rod due to misoperation, thereby ensuring that the grounding knife switch is always in a power-off and disconnected state during maintenance. Some transmission rods are not necessarily in a completely vertical state. The first adapter and the second adapter of the intermediate adapter unit are installed between the positioning unit and the first clamping unit. The first adapter and the second adapter are connected by a ball joint to fit a variety of application scenarios and adapt to transmission rods with different angles and directions, thereby expanding the scope of application of the device.

[0033] The maintenance isolation control method provided by the present invention clamps the two first clamping units of the maintenance isolation auxiliary device on the switch operating box, and the action switch feeds back the state of the grounding switch to the controller in real time. When the grounding switch switches from the closed power-on state to the open power-off state, the controller starts the linear drive module of the second clamping unit, and the first clamp and the second clamp clamp the transmission rod to avoid misoperation. When the grounding switch is completed, the controller starts the linear drive module of the second clamping unit again, and the first clamp and the second clamp cooperate to release the transmission rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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 of the present invention. 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 the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0035] Figure 1 A top view of the maintenance isolation auxiliary device in an embodiment of the present invention;

[0036] Figure 2 It is a schematic diagram of the assembly of the maintenance isolation auxiliary device in an embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of assembling the second clamping unit and the intermediate adapter unit in an embodiment of the present invention;

[0038] Figure 4 The figure is a flow chart of the maintenance isolation control method in an embodiment of the present invention.

[0039] Reference numerals:

[0040] 1. Positioning unit; 2. First clamping unit; 3. Second clamping unit; 4. Intermediate transfer unit; 5. Height adjustment unit;

[0041] 11. Base plate; 12. Positioning tube; 121. Threaded hole; 13. Fastening bolt;

[0042] 21. Clamping member; 22. Sliding rod;

[0043] 31. mounting seat; 311. guide hole; 32. first clamping jaw; 33. second clamping jaw; 34. first length adjustment module; 35. second length adjustment module; 36. first rubber pad; 37. second rubber pad;

[0044] 41. a first adapter; 42. a second adapter;

[0045] 51. First rod member; 52. Second rod member. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions 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 part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0047] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive 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. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0050] Substation equipment maintenance management is the foundation and core work of power grid companies. In recent years, in the maintenance process, there has been a significant increase in misoperation accidents caused by misjudgment of breaking through the maintenance work surface or misoperation of secondary equipment.

[0051] At present, the intelligent maintenance isolation control function has been added to the five-defense management system of each substation, and effective technical means have been added to the maintenance link to cooperate with the safety risk management of misoperation. However, the maintenance isolation control currently mainly focuses on locking the power supply circuit breaker or mechanism box of the knife switch / ground switch on the isolation surface, and fails to truly restrict and lock the transmission part of the knife switch / ground switch. For example, in the comprehensive reform work, the knife switch / ground switch mechanism box on the isolation surface also has a work location, and the knife switch / ground switch power supply has also been released, but there is still a risk of manual operation of the mechanism, resulting in misoperation.

[0052] In order to lock the transmission rod to limit its rotation when the grounding knife switch is powered off for maintenance to avoid misoperation, this embodiment provides a maintenance isolation auxiliary device and a maintenance isolation control method. Figures 1 to 4 The specific contents of this embodiment are described in detail. It should be noted that the first direction mentioned in this embodiment is Figure 2The X direction in this embodiment is Figure 2 The third direction mentioned in this embodiment is Figure 2 The Z direction in .

[0053] The maintenance isolation auxiliary device in this embodiment includes a positioning unit 1, two first clamping units 2, a second clamping unit 3 and an intermediate transfer unit 4. The positioning unit 1 includes a substrate 11. The two first clamping units 2 each include a clamping member 21, and the two clamping members 21 are spaced apart on the substrate 11 and can approach or move away from each other along a first direction. The second clamping unit 3 includes a mounting seat 31, a first clamping jaw 32 and a second clamping jaw 33, the first clamping jaw 32 is fixedly disposed on the mounting seat 31, and the second clamping jaw 33 is disposed on the mounting seat 31 and can approach or move away from the first clamping jaw 32 along a first direction. The intermediate transfer unit 4 includes a first transfer member 41 and a second transfer member 42 connected by a ball joint, and the end of the first transfer member 41 away from the second transfer member 42 is connected to the substrate 11, and the end of the second transfer member 42 away from the first transfer member 41 is connected to the mounting seat 31.

[0054] In short, the maintenance isolation auxiliary device provided in this embodiment installs the clamping parts 21 of the two first clamping units 2 on the base plate 11 of the positioning unit 1, and the second clamping claw 33 of the second clamping unit 3 can cooperate with the first clamping claw 32 to clamp or release. When the grounding knife switch is disconnected, the two first clamping units 2 can be clamped on the knife switch operating box first, and then the second clamping unit 3 can be used to lock the transmission rod to avoid the rotation of the transmission rod due to misoperation, so as to ensure that the grounding knife switch is always in a power-off and disconnected state during maintenance. Some transmission rods are not necessarily in a completely vertical state. The first adapter 41 and the second adapter 42 of the intermediate adapter unit 4 are installed between the positioning unit 1 and the first clamping unit 2. The first adapter 41 and the second adapter 42 are connected by a ball joint, which can fit a variety of application scenarios and adapt to transmission rods with different angles and directions, thereby expanding the scope of application of the device.

[0055] Furthermore, a slide bar 22 is provided at one end of the clamping member 21, and the positioning unit 1 further includes two positioning tubes 12 and two fixing bolts 13. The two positioning tubes 12 are arranged on the substrate 11 at intervals along the first direction, the slide bar 22 is inserted into the positioning tube 12, and the side wall of the positioning tube 12 is provided with a threaded hole 121. One end of each fixing bolt 13 is connected to the threaded hole 121 and stopped on the outer wall surface of the slide bar 22. The clamping member 21 is specifically connected to the substrate 11 by sliding. After the substrate 11 is placed on the knife switch operating box, the distance between the two clamping members 21 is adjusted to achieve clamping of both sides of the operating box, thereby achieving fixation. The positioning and fixing of the clamping member 21 is achieved by pressing the fixing bolts 13: after the adjustment of the clamping member 21 is completed, the fixing bolts 13 are tightened to press the fixing bolts 13 on the slide bar 22 of the clamping member 21, thereby achieving the pressing and clamping of the slide bar 22, and thus completing the overall installation of the fixed part. The head of the set bolt 13 is fixed with a hexagonal nut, and when adjusting, a spanner is needed to operate, and other personnel cannot directly operate. In addition, the head of the set bolt 13 can also be provided with an irregular shaped nut and equipped with a corresponding rotating spanner, so that other personnel can completely avoid accidental touch.

[0056] Furthermore, the maintenance isolation auxiliary device further includes a height adjustment unit 5, which is disposed between the first adapter 41 and the base plate 11. By adding the height adjustment unit 5, the maintenance isolation auxiliary device can be adjusted along the third direction, so as to be adapted to more application scenarios.

[0057] Exemplarily, in this embodiment, the height adjustment unit 5 includes a first rod 51 and a second rod 52 that are threadedly connected, one of which is connected to the first adapter 41, and the other of which is connected to the base plate 11. The height adjustment unit 5 is specifically divided into a first rod 51 and a second rod 52, and the first rod 51 is threadedly connected to the second rod 52 to achieve height adjustment in the third direction. Furthermore, one end of the first rod 51 is threadedly connected to the second rod 52, and the other end of the first rod 51 is threadedly connected to the base plate 11, so that the height adjustment unit 5 can have a detachable function.

[0058] For example, in other embodiments, the height adjustment unit 5 includes a first cylinder and a first telescopic member slidably disposed in the first cylinder, one of the first cylinder and the first telescopic member is connected to the first adapter 41, and the other of the first cylinder and the first telescopic member is connected to the base plate 11. The height adjustment unit 5 may be, but is not limited to, a cylinder or a hydraulic cylinder, etc., and is not limited to too much herein.

[0059] Furthermore, the mounting seat 31 has an accommodating cavity, and the second clamping unit 3 further includes a linear drive module, which is disposed in the accommodating cavity and is used to drive the second clamping jaw 33 to move along the first direction. For example, the linear drive module can be, but is not limited to, a gear rack mechanism, a ball slide module, a cylinder, a hydraulic cylinder, or an electric push rod, etc., and no excessive restrictions are made here.

[0060] Furthermore, the mounting seat 31 is provided with a guide hole 311, and the guide hole 311 extends along the first direction. By adding the guide hole 311, it is convenient to avoid the movable stroke of the second clamping jaw 33.

[0061] Further, the second clamping unit 3 also includes a first length adjustment module 34 and a second length adjustment module 35. The first length adjustment module 34 is arranged between the first clamping jaw 32 and the mounting seat 31, and the first length adjustment module 34 is used to drive the first clamping jaw 32 to extend and retract along the second direction. One end of the second length adjustment module 35 is connected to the second clamping jaw 33, and the other end of the second length adjustment module 35 is connected to the linear drive module through the guide hole 311, and the second length adjustment module 35 is used to drive the second clamping jaw 33 to extend and retract along the second direction. By adding the first length adjustment module 34 and the second length adjustment module 35, the distance between the clamping jaw and the transmission rod in the second direction can be adjusted. The first length adjustment module 34 and the second length adjustment module 35 can be, but not limited to, a cylinder or a hydraulic cylinder, etc., and no excessive restrictions are made here. At the same time, the second length adjustment module 35 of the second clamping jaw 33 is movably connected to the mounting seat 31, which can guide the activity of the second clamping jaw 33, reduce the force of the linear drive module, and form force protection for the linear drive module.

[0062] Furthermore, a first rubber pad 36 is provided on the side of the first clamping jaw 32 facing the second clamping jaw 33, and a second rubber pad 37 is provided on the side of the second clamping jaw 33 facing the first clamping jaw 32. By adding the first rubber pad 36 and the second rubber pad 37, the outer wall surface of the transmission rod can be protected and prevented from being squeezed and damaged.

[0063] like Figure 4As shown, this embodiment also provides a maintenance isolation control method, which adopts the maintenance isolation auxiliary device mentioned above, and includes the following steps: the two first clamping units 2 of the maintenance isolation auxiliary device are clamped on the knife switch operating box; the action switch feeds back the grounding knife switch state to the controller in real time; when the grounding knife switch switches from the closed power-on state to the disconnected power-off state; the controller starts the linear drive module of the second clamping unit 3, and the first clamping jaw 32 and the second clamping jaw 33 clamp the transmission rod; when the grounding knife switch completes the maintenance, the controller starts the linear drive module of the second clamping unit 3 again, and the first clamping jaw 32 and the second clamping jaw 33 cooperate to release the transmission rod. The controller in this embodiment is independently powered and is not affected by whether the grounding knife switch is closed. The maintenance isolation control method can automatically start the maintenance isolation auxiliary device, limit the action of the grounding knife switch, and can solve the current problem of false touch. At the same time, the device can be applied to many work sites that require restriction assistance.

[0064] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Maintenance isolation auxiliary device, characterized in that: include: A positioning unit (1) comprising a base plate (11); Two first clamping units (2), each comprising a clamping member (21), wherein the two clamping members (21) are arranged on the substrate (11) at intervals and can move closer to or farther from each other along a first direction; A second clamping unit (3), comprising a mounting seat (31), a first clamping jaw (32) and a second clamping jaw (33), wherein the first clamping jaw (32) is fixedly arranged on the mounting seat (31), and the second clamping jaw (33) is arranged on the mounting seat (31) and can approach or move away from the first clamping jaw (32) along the first direction; The intermediate adapter unit (4) comprises a first adapter member (41) and a second adapter member (42) connected by a ball joint, wherein one end of the first adapter member (41) away from the second adapter member (42) is connected to the base plate (11), and one end of the second adapter member (42) away from the first adapter member (41) is connected to the mounting seat (31).

2. The maintenance isolation auxiliary device according to claim 1, characterized in that: A sliding rod (22) is provided at one end of the clamping member (21), and the positioning unit (1) further comprises: Two positioning tubes (12) are arranged on the base plate (11) at intervals along the first direction, the sliding rod (22) is inserted into the positioning tube (12), and the side wall of the positioning tube (12) is provided with a threaded hole (121); Two fixing bolts (13), one end of each fixing bolt (13) is connected to the threaded hole (121) and is stopped on the outer wall surface of the sliding rod (22).

3. The maintenance isolation auxiliary device according to claim 1, characterized in that: The maintenance isolation auxiliary device also includes: A height adjustment unit (5) is arranged between the first adapter (41) and the base plate (11).

4. The maintenance isolation auxiliary device according to claim 3 is characterized in that: The height adjustment unit (5) comprises a first rod (51) and a second rod (52) which are threadedly connected, one of the first rod (51) and the second rod (52) being connected to the first adapter (41), and the other of the first rod (51) and the second rod (52) being connected to the base plate (11).

5. The maintenance isolation auxiliary device according to claim 3, characterized in that: The height adjustment unit (5) comprises a first cylinder body and a first telescopic member slidably arranged in the first cylinder body, one of the first cylinder body and the first telescopic member is connected to the first adapter (41), and the other of the first cylinder body and the first telescopic member is connected to the base plate (11).

6. The maintenance isolation auxiliary device according to claim 1, characterized in that: The mounting seat (31) has a receiving cavity, and the second clamping unit (3) further comprises: A linear drive module is arranged in the accommodating cavity, and the linear drive module is used to drive the second clamping jaw (33) to move along the first direction.

7. The maintenance isolation auxiliary device according to claim 6, characterized in that: The mounting seat (31) is provided with a guide hole (311), and the guide hole (311) extends along the first direction.

8. The maintenance isolation auxiliary device according to claim 7, characterized in that: The second clamping unit (3) further comprises: A first length adjustment module (34) is arranged between the first clamping jaw (32) and the mounting seat (31), and the first length adjustment module (34) is used to drive the first clamping jaw (32) to extend and retract along a second direction; A second length adjustment module (35), one end of the second length adjustment module (35) is connected to the second clamping jaw (33), the other end of the second length adjustment module (35) passes through the guide hole (311) and is connected to the linear drive module, and the second length adjustment module (35) is used to drive the second clamping jaw (33) to extend and retract along the second direction.

9. The maintenance isolation auxiliary device according to any one of claims 1 to 8, characterized in that: A first rubber pad (36) is provided on the side of the first clamping jaw (32) facing the second clamping jaw (33), and a second rubber pad (37) is provided on the side of the second clamping jaw (33) facing the first clamping jaw (32).

10. The maintenance isolation control method is characterized in that: The maintenance isolation auxiliary device according to any one of claims 1 to 9 comprises the following steps: Clamping two first clamping units (2) of the maintenance isolation auxiliary device onto a knife switch operating box; The action switch feeds back the grounding switch status to the controller in real time; When the grounding knife switch is switched from a closed power-on state to an open power-off state, the controller starts the linear drive module of the second clamping unit (3), and the first clamping jaw (32) and the second clamping jaw (33) clamp and lock the transmission rod; When the grounding switch is overhauled, the controller starts the linear drive module of the second clamping unit (3) again, and the first clamping jaw (32) and the second clamping jaw (33) cooperate to release the transmission rod.

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