Electrical grounding switch locking device

Abstract

The utility model discloses an electrical grounding switch locking device, which belongs to the technical field of grounding switches and is arranged on a grounding switch in a switch cabinet, the grounding switch comprises a plurality of moving contacts and a plurality of static contacts, each moving contact comprises two moving contact plates, and each static contact comprises a static contact outer plate and a static contact inner plate; the two connecting plates are respectively arranged on the movable contact plate, and two limiting grooves are formed in the static contact outer plate; the locking mechanism is arranged on the connecting plate; according to the scheme, after the moving contact rotates to be in contact with the static contact, the locking mechanism locks and connects the moving contact plate and the static contact outer plate, so that the condition that the moving contact plate is separated from the static contact inner plate due to loosening and deformation of parts on the moving contact caused by frequent operation, vibration and the like can be avoided, that is, the moving contact is prevented from being separated from the static contact, and the service life of the moving contact is prolonged. The protection effect on workers is good, surrounding electrical equipment can be better protected, the safety performance is good, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of earthing switch, more specifically, relate to a kind of electrical earthing switch locking device. BACKGROUND

[0002] Switch cabinet is an important equipment for distribution, control and protection of electric energy in electrical system. It is a complete electrical equipment composed of various switch electric appliances, measuring instruments, protection devices and auxiliary equipment. The earthing switch in the switch cabinet is a device for connecting electrical equipment or line with ground, and is one of the important measures to ensure safe operation.

[0003] The earthing switch generally includes: a movable contact connected to the conductor of the power system, responsible for contacting or separating with the static contact; a static contact, a fixed part, connected to the ground; an operating mechanism for manually or electrically driving the movable contact to move, realizing the closing and opening of the switch; an insulator to ensure that there is enough insulation distance between the movable contact and the static contact in the open state to prevent short circuit. When the cabinet door is closed, the earthing switch is in the open state; after the earthing switch is closed by the operating mechanism, the interlocking mechanism will unlock the cabinet door, at this time, the operator can open the cabinet door for maintenance or repair.

[0004] However, after the earthing switch is used for a period of time, the bolts, springs and other mechanical parts on the movable contact of the earthing switch will loosen and deform due to long-term bearing of high mechanical stress, such as frequent operation and vibration, which will cause unstable contact of the movable contact. When the staff opens the cabinet door for maintenance and repair work, the movable contact is easy to separate from the static contact, which will increase the risk of electric shock and electric arc burn of the staff, and the electric arc and high temperature generated will also damage the surrounding electrical equipment, which is highly dangerous.

[0005] Therefore, it is necessary to provide an electrical earthing switch locking device to solve the above technical problems. UTILITY MODEL CONTENT

[0006] The utility model aims at providing an electrical earthing switch locking device to solve the above technical problems.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] An electrical earthing switch locking device is arranged on the earthing switch in the switch cabinet, the earthing switch includes a plurality of movable contacts and a plurality of static contacts, comprising:

[0009] The movable contact includes two movable contact plates, the static contact includes a static contact outer plate and a static contact inner plate, and the static contact inner plate is located between the two movable contact plates;

[0010] The connecting plate is provided with two and is arranged on the moving contact plate respectively, and the static contact outer plate is provided with two limiting grooves;

[0011] The locking mechanism is arranged on the connecting plate and locks the connecting plate and the static contact outer plate through cooperation with the limiting grooves.

[0012] Further, the locking mechanism comprises:

[0013] The supporting plate is arranged on the connecting plate, and the supporting plate is provided with a first elastic member, and the outer end of the first elastic member is connected with an adapter plate;

[0014] The locking rod is connected with the adapter plate at one end, movably penetrates through the supporting plate at the other end and is matched with the limiting grooves, and the end of the locking rod is provided with an inclined surface.

[0015] Further, the connecting outer column is movably arranged outside the connecting inner column.

[0016] Further, the connecting outer column is movably arranged outside the connecting inner column.

[0017] Further, the static contact outer plate is provided with a rotating rod arranged through a bearing, and the end of the rotating rod is provided with a baffle.

[0018] Further, the rotating rod is provided with a mounting disc, the mounting disc is connected with a torsion spring, the other end of the torsion spring is connected with the outer wall of the static contact outer plate, and the torsion spring is arranged outside the rotating rod.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] 1、When the moving contact rotates and contacts the static contact, the moving contact plate will move the connecting plate and the locking mechanism during the rotating process, and finally the locking mechanism will lock and connect the moving contact plate and the static contact outer plate, so that the situation that the moving contact plate and the static contact inner plate are separated due to frequent operation, vibration and the like can be avoided, that is, the moving contact and the static contact are prevented from being separated, the risk of electric shock and electric arc burn caused by the separation of the moving contact and the static contact can be greatly reduced, the protection effect on the staff is good, the surrounding electrical equipment can be better protected, the safety performance is good, the practicality is strong, and the utility model can be widely used.

[0021] 2、The locking mechanism is pulled and the connecting outer column or the connecting inner column is pulled out of the position of the baffle, then the rotating rod is rotated to make the baffle be in the vertical state, the baffle blocks the connecting outer column and the connecting inner column, at this time, the locking rod is separated from the limiting groove, the locking of the locking mechanism is released, the operation is more simple and convenient, time and labor are saved, and the use effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a local structure schematic view of the grounding switch in the switch cabinet of the utility model;

[0023] Figure 2 It is a local structure schematic view of the grounding switch in the switch cabinet of the utility model; Figure 1 It is an enlarged structure schematic view of position A in the utility model;

[0024] Figure 3 It is an enlarged structure schematic view of position B in the utility model; Figure 2 It is an enlarged structure schematic view of position B in the utility model;

[0025] Figure 4 It is a local structure schematic view of the rear side of the static contact of the grounding switch of the utility model;

[0026] Figure 5 It is a state structure schematic view of the locking mechanism of the utility model when the locking is released;

[0027] Figure 6 It is a sectional structure schematic view of the connecting outer column of the utility model.

[0028] Mark explanation in the drawing:

[0029] 1, switch cabinet;2, grounding switch;201, moving contact;2011, moving contact plate;202, static contact;2021, static contact outer plate;2022, static contact inner plate;3, connecting plate;4, limiting groove;5, locking mechanism;51, support plate;52, first elastic member;53, switching plate;54, locking rod;6, connecting outer column;7, connecting inner column;8, inner moving cavity;9, second elastic member;10, rotating rod;11, baffle;12, mounting disc;13, torsional spring. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] Please refer to Figures 1-6The utility model relates to an electrical grounding switch locking device, which is arranged on a grounding switch 2 in a switch cabinet 1, and the grounding switch 2 comprises a plurality of moving contacts 201 and a plurality of static contacts 202, comprising:

[0032] The moving contact 201 comprises two moving contact plates 2011, and the static contact 202 comprises a static contact outer plate 2021 and a static contact inner plate 2022, which is located between the two moving contact plates 2011;

[0033] The connecting plate 3 is provided with two and is arranged on the moving contact plate 2011, and the static contact outer plate 2021 is provided with two limiting grooves 4;

[0034] The locking mechanism 5 is arranged on the connecting plate 3 and locks the connecting plate 3 and the static contact outer plate 2021 through cooperation with the limiting groove 4.

[0035] In use, when maintenance and repair of the switch cabinet 1 are needed, the staff first makes the grounding switch 2 closed through the operating mechanism, that is, the moving contact 201 in the grounding switch 2 is rotated from the vertical state to the horizontal state, at this time, the moving contact 201 will be in contact with the static contact 202, as shown in the state, at this time, the cabinet door of the switch cabinet 1 can be opened, and the staff can perform the maintenance and repair operation. Figure 1

[0036] When the moving contact 201 is rotated, the two moving contact plates 2011 on the moving contact 201 will finally be in contact with the two ends of the static contact inner plate 2022 of the static contact 202, as shown in the state, to form grounding. The moving contact plate 2011 will drive the connecting plate 3 to move during the rotation, and the connecting plate 3 will drive the locking mechanism 5 thereon to move, and finally the locking mechanism 5 will cooperate with the limiting groove 4 on the static contact outer plate 2021 to lock the connecting plate 3 and the static contact outer plate 2021, that is, to lock and connect the moving contact plate 2011 and the static contact outer plate 2021, so as to avoid the situation that the moving contact plate 2011 is separated from the static contact inner plate 2022 due to frequent operation, vibration and the like, that is, to prevent the moving contact 201 from being separated from the static contact 202, to keep the moving contact 201 and the static contact 202 in contact during maintenance and repair of the staff, to greatly reduce the risk of electric shock and arc burn caused by separation of the moving contact 201 and the static contact 202, to have good protection effect on the staff, to better protect the surrounding electrical equipment, to have good safety performance, to have high practicability, and to be widely used. Figure 4

[0037] When the staff completes the maintenance and repair, the locking of the locking mechanism 5 is released, and then the moving contact 201 can be rotated from the horizontal state to the vertical state through the operating mechanism, that is, the grounding switch 2 is in the open state, and normal use can be performed. ​​

[0038] In this embodiment, preferably, please refer to Figures 2-5 The locking mechanism 5 comprises:

[0039] The support plate 51 is provided on the connecting plate 3, and the first elastic member 52 is provided on the support plate 51. The outer end of the first elastic member 52 is connected with the adapter plate 53. In this application, the first elastic member 52 can adopt a spring or a spring and damper combination.

[0040] The locking rod 54 is connected with the adapter plate 53 at one end, and the other end is movably penetrated through the support plate 51 and matched with the limiting groove 4. The end of the locking rod 54 is inclined.

[0041] When the moving contact plate 2011 rotates to drive the connecting plate 3 to rotate, the connecting plate 3 drives the locking mechanism 5 to move. When the locking rod 54 contacts the static contact outer plate 2021, it will be extruded. At this time, the locking rod 54 will move along the support plate 51 under pressure, and will stretch the first elastic member 52. Finally, when the moving contact plate 2011 rotates to the position, the locking rod 54 is at the position of the limiting groove 4. At this time, the locking rod 54 is no longer under pressure, and the elastic force of the first elastic member 52 will drive the locking rod 54 into the limiting groove 4, so that the connecting plate 3 and the moving contact plate 2011 at this time can be locked by the locking rod 54, avoiding the situation that the moving contact plate 2011 is separated from the static contact inner plate 2022, ensuring the stability of the contact connection between the moving contact 201 and the static contact 202, and the safety is high.

[0042] In this embodiment, preferably, please refer to Figures 2-6 The connecting outer column 6 and the connecting inner column 7 are respectively arranged between the two adapter plates 53. The connecting outer column 6 is movably sleeved outside the connecting inner column 7. The connecting outer column 6 and the connecting inner column 7 connect the two adapter plates 53 on both sides, that is, connect the locking mechanisms 5 on the two connecting plates 3, which can improve the locking effect of the locking mechanism 5, and further improve the connection stability of the moving contact plate 2011 and the static contact inner plate 2022. When the two moving contact plates 2011 contact the static contact inner plate 2022, they will move due to the action of the spring and other components, which can ensure better contact connection with the static contact inner plate 2022. At this time, the locking mechanisms 5 on the two connecting plates 3 will move closer to or away from each other with the moving contact plate 2011, and the connecting outer column 6 and the connecting inner column 7 will move to adapt to the movement of the locking mechanisms 5 on both sides.

[0043] In this embodiment, preferably, please refer to Figure 6The inner cavity 8 is connected with the outer column 6, the inner column 7 is slidingly connected in the inner cavity 8, and the second elastic element 9 is arranged between the inner end of the inner column 7 and the inner wall of the inner cavity 8. The second elastic element 9 in the application can be a spring or a spring and a damper. When the two side locking mechanisms 5 move towards or away from each other along with the moving contact plate 2011, the outer column 6 and the inner column 7 will also move relative to each other, the inner column 7 will move along the inner wall of the inner cavity 8, and the second elastic element 9 will be compressed or stretched. The second elastic element 9 can make the two side locking mechanisms 5 return to the initial position better and more stably when the grounding switch 2 is disconnected, and can also make the moving contact plate 2011 connected with the locking mechanism 5 contact the static contact inner plate 2022 more tightly, thereby improving the connection effect.

[0044] In the embodiment, preferably, please refer to Figure 2 and Figure 5 The rotating rod 10 is rotatably arranged on the static contact outer plate 2021 through a bearing, and the end of the rotating rod 10 is provided with a baffle 11. When the grounding switch 2 is closed, at this time, the moving contact 201 contacts the static contact 202, and the locking mechanism 5 also cooperates with the limiting groove 4 on the static contact outer plate 2021 to lock and connect the moving contact plate 2011 and the static contact outer plate 2021. Then, when the staff completes the maintenance and repair, the adapter plate 53 of the locking mechanism 5 is pulled or the outer column 6 and the inner column 7 are pulled, so that the outer column 6 and the inner column 7 exceed the position of the baffle 11, and then the rotating rod 10 is rotated to drive the baffle 11 to rotate, so that the baffle 11 is in a vertical state, as shown in Figure 5 , the adapter plate 53 or the outer column 6 and the inner column 7 are loosened, and the baffle 11 blocks the outer column 6 and the inner column 7. At this time, the locking rod 54 is separated from the limiting groove 4, the first elastic element 52 is in a stretched state, and the locking of the locking mechanism 5 is released. Then, the moving contact 201 is turned back to drive the locking mechanism 5 to move away, and the operation is more simple and convenient, and the use effect is good.

[0045] In the embodiment, preferably, please refer to Figure 2 and Figure 5 The mounting disc 12 is arranged on the rotating rod 10, the torsional spring 13 is connected to the mounting disc 12, the other end of the torsional spring 13 is connected to the outer wall of the static contact outer plate 2021, and the torsional spring 13 is arranged outside the rotating rod 10. When the baffle 11 is in a horizontal state, the torsional spring 13 is in a natural state. When the rotating rod 10 is rotated from the horizontal state to the vertical state, the mounting disc 12 is rotated to pull the torsional spring 13. When the baffle 11 is pressed by the outer column 6 and the inner column 7 and the position is kept unchanged, when the outer column 6 and the inner column 7 move away along with the locking mechanism 5, the torsional spring 13 drives the rotating rod 10 and the baffle 11 to rotate back, and finally the torsional spring 13 returns to the natural state and the baffle 11 returns to the horizontal state.

[0046] It should be understood that the examples and embodiments described herein are only for illustration and are not intended to limit the present application, and those skilled in the art can make various modifications or changes according to it, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0047] It should be noted that if the present application embodiments involve directional indications such as up, down, left, right, front, back, etc., the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture such as shown in the drawings, and if the specific posture changes, the directional indications will also change accordingly.

[0048] In addition, if the present application embodiments involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, "multiple" means two or more. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the present application.

Claims

1. An electrical grounding switch locking device provided on a grounding switch (2) in a switch cabinet (1), the grounding switch (2) comprising a plurality of moving contacts (201) and a plurality of stationary contacts (202), characterized in that, Comprise: The moving contact (201) comprises two moving contact plates (2011), the static contact (202) comprises a static contact outer plate (2021) and a static contact inner plate (2022), and the static contact inner plate (2022) is located between the two moving contact plates (2011); The connecting plate (3) is provided with two and is arranged on the moving contact plate (2011), and the static contact outer plate (2021) is provided with two limiting grooves (4); The locking mechanism (5) is arranged on the connecting plate (3), and the connecting plate (3) and the static contact outer plate (2021) are locked by cooperating with the limiting groove (4).

2. An electrical grounding switch locking device according to claim 1, wherein The locking mechanism (5) comprises: The supporting plate (51) is provided on the connecting plate (3), and the first elastic member (52) is provided on the supporting plate (51), and the outer end of the first elastic member (52) is connected with the adapter plate (53); The locking rod (54) is connected with the adapter plate (53) at one end, and the other end is movably penetrated through the supporting plate (51) and matched with the limiting groove (4), and the end of the locking rod (54) is inclined.

3. An electrical grounding switch locking device according to claim 2, wherein The connecting outer column (6) and the connecting inner column (7) are respectively arranged between the two adapter plates (53), and the connecting outer column (6) is movably sleeved outside the connecting inner column (7).

4. An electrical grounding switch locking device according to claim 3, wherein The inner moving cavity (8) is arranged in the connecting outer column (6), the connecting inner column (7) is slidably connected in the inner moving cavity (8), and the second elastic member (9) is arranged between the inner end of the connecting inner column (7) and the inner wall of the inner moving cavity (8).

5. An electrical grounding switch locking device according to claim 3, wherein The static contact outer plate (2021) is rotatably provided with a rotating rod (10) through a bearing, and the end of the rotating rod (10) is provided with a baffle (11).

6. An electrical grounding switch locking device according to claim 5, wherein The rotating rod (10) is provided with a mounting disc (12), the mounting disc (12) is connected with a torsional spring (13), the other end of the torsional spring (13) is connected with the outer wall of the static contact outer plate (2021), and the torsional spring (13) is sleeved outside the rotating rod (10).

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