Interlocking device and switchgear

Abstract

The utility model belongs to the technical field of power equipment, and discloses an interlocking device and switch equipment. The interlocking device comprises an operation panel, a shielding plate, a lock rod and an elastic piece. The operation panel is provided with an operation hole and a first long-strip-shaped hole. The first long-strip-shaped hole comprises a locking part and a sliding part. The shielding plate is arranged on the inner side of the operation panel in a sliding mode, and a connecting hole corresponding to the first long-strip-shaped hole is formed in the shielding plate; the lock rod comprises a locking section and an unlocking section, one end of the unlocking section is connected with the locking section, and the other end of the unlocking section slidably penetrates through the first long-strip-shaped hole and the connecting hole in the axial direction of the unlocking section. The locking section is used for being matched with the locking part to enable the shielding plate to be kept at the position for shielding the operation hole, the locking rod is pulled to enable the locking section to be separated from the locking part, and the unlocking section can slide in the sliding part to drive the shielding plate to be away from the operation hole; the elastic piece is configured to always have the trend of pulling the locking section to be close to the operation panel. According to the interlocking device, locking and unlocking of the shielding plate can be realized, so that the reliability of shielding the operation hole by the shielding plate is ensured.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to an interlocking device and a switching device. Background Technology

[0002] In power transmission and distribution systems, three-position disconnect switches and circuit breakers in high-voltage switchgear are often used together. The three-position disconnect switches and circuit breakers must be operated in a fixed sequence. Therefore, in order to prevent misoperation, interlocking devices are generally installed.

[0003] Existing interlocking devices typically achieve their interlocking function by covering the operating holes on the control panel with a cover plate. The cover plate is usually slidably connected to the control panel to either cover or expose the operating holes. When the equipment is subjected to vibration or other factors, the cover plate can easily become misaligned, exposing the operating holes and leading to malfunctions.

[0004] Therefore, there is an urgent need to propose an interlocking device and switching equipment to solve the above-mentioned technical problems. Utility Model Content

[0005] According to one aspect of the present invention, the present invention provides an interlocking device that can lock and unlock a cover plate to ensure the reliability of the cover plate blocking the operating hole, and has a simple structure and is easy to operate.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Interlocking device for switching equipment, the interlocking device comprising:

[0008] The operation panel is provided with an operation hole and a first elongated hole, the first elongated hole including a locking part and a sliding part;

[0009] A cover plate is slidably disposed on the inner side of the operation panel, and the cover plate is provided with a connecting hole corresponding to the first elongated hole;

[0010] The locking rod includes a locking section and an unlocking section. One end of the unlocking section is connected to the locking section, and the other end slides through the first elongated hole and the connecting hole along its own axial direction. The locking section is used to cooperate with the locking part to keep the cover plate in the position of blocking the operating hole. Pulling the locking rod will cause the locking section to separate from the locking part. The unlocking section can slide within the sliding part to drive the cover plate away from the operating hole.

[0011] An elastic element is configured to always have a tendency to pull the locking section closer to the operation panel.

[0012] Optionally, the locking section, through a clearance fit with the locking part, keeps the cover plate in a position that blocks the operating hole; when the locking section and the locking part are in clearance fit, the locking section abuts against the cover plate along the axial direction of the locking section, and along the extension direction of the first elongated hole, the locking section can abut against the inner peripheral wall of the locking part to restrict the locking section from entering the sliding part.

[0013] Optionally, a handle is provided at the end of the locking section away from the unlocking section.

[0014] Optionally, the handle is provided with an anti-slip structure.

[0015] Optionally, the elastic element is sleeved on the unlocking section, and a limiting pin is provided at one end of the unlocking section away from the locking section. One end of the elastic element abuts against the cover plate, and the other end abuts against the limiting pin.

[0016] Optionally, a retaining ring is sleeved on the unlocking section, one side of the retaining ring abutting against the other end of the elastic member, and the other side of the retaining ring abutting against the limiting pin.

[0017] Optionally, a first limiting sleeve is provided on the unlocking section, the first limiting sleeve is located between the cover plate and the limiting pin, the elastic element is sleeved outside the first limiting sleeve, and the length of the first limiting sleeve is less than the maximum distance between the cover plate and the limiting pin.

[0018] Optionally, the operating hole includes an isolating switch operating hole and a grounding switch operating hole, the cover plate is provided with an isolating clearance opening and a grounding clearance opening, and the locking part is provided with three locking parts, which are spaced apart along the length direction of the first elongated hole, and the three locking parts are defined as the first locking part, the second locking part and the third locking part;

[0019] When the locking section cooperates with the first locking part, the cover plate simultaneously blocks the operating hole of the disconnect switch and the operating hole of the grounding switch; when the locking section cooperates with the second locking part, the isolation clearance opening is opposite to the operating hole of the disconnect switch; when the locking section cooperates with the third locking part, the ground clearance opening is opposite to the operating hole of the grounding switch.

[0020] Optionally, the cover plate is provided with a second elongated hole, one end of the connecting rod is connected to the operation panel, and the other end passes through the second elongated hole. A locking component is installed on the connecting rod, and the locking component is used to restrict the movement of the cover plate in a direction perpendicular to the operation panel.

[0021] Optionally, the locking assembly includes:

[0022] A gasket is fitted onto the connecting rod and attached to the inside of the operation panel;

[0023] The second limiting sleeve is fitted onto the connecting rod. The second limiting sleeve includes a first ring portion and a second ring portion. The first ring portion abuts against the gasket and passes through the second elongated hole. The diameter of the second ring portion is larger than that of the first ring portion. The baffle is located between the second ring portion and the gasket.

[0024] A locking nut is provided on the connecting rod, which is provided with an external thread. The connecting rod is connected to the locking nut through the external thread. The locking nut is used to press the second limiting sleeve against the gasket.

[0025] According to another aspect of the present invention, the present invention also provides a switching device, including an operating mechanism and an interlocking device as described in any of the above technical solutions, wherein the interlocking device is used for the operating mechanism.

[0026] The beneficial effects of this utility model are:

[0027] This invention provides an interlocking device for switching equipment, including an operation panel, a cover plate, a locking rod, and an elastic element. When the switching equipment is not in use, the locking section of the control rod engages with the locking part, locking the rod in this position. This ensures the cover plate connected to the locking rod remains in position blocking the operating hole, improving the reliability of the cover plate blocking the operating hole and effectively preventing the operating hole from being exposed due to equipment vibration, thus preventing misoperation. Furthermore, the elastic element maintains the engagement between the locking section and the locking part under its elastic force, reducing the risk of separation due to equipment vibration and further improving the reliability of the cover plate blocking the operating hole. When the operating hole needs to be exposed, the locking rod is pulled outward along the axial direction of the locking rod against the elastic force of the elastic element, causing the locking section to move away from the operation panel, i.e., separating the locking section from the locking part. Then, the locking rod is moved along the extension direction of the first elongated hole, allowing the unlocking section to slide within the sliding part to move the cover plate away from the operating hole, making operation convenient.

[0028] This utility model also provides a switchgear, including an operating mechanism and the aforementioned interlocking device. Due to the use of the aforementioned interlocking device, this switchgear has better operational reliability. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the interlocking device provided in an embodiment of the present invention;

[0031] Figure 2 This is a partial schematic diagram of the operation panel provided in an embodiment of the present utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the shield provided in an embodiment of the present utility model;

[0033] Figure 4 This is a cross-sectional view of the interlocking device provided in an embodiment of this utility model;

[0034] Figure 5 yes Figure 4 Enlarged view at point A (locking section and locking part in tandem);

[0035] Figure 6 This is a schematic diagram showing the locking section and locking part in a separated state according to an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the locking rod provided in an embodiment of the present utility model;

[0037] Figure 8 This is a schematic diagram of the handle provided in an embodiment of the present utility model;

[0038] Figure 9 This is a schematic diagram of the structure of the first limiting sleeve provided in this embodiment of the utility model;

[0039] Figure 10 This is a schematic diagram of the structure of the second limiting sleeve provided in this embodiment of the utility model.

[0040] In the picture:

[0041] 100. Operation panel; 110. Operation hole; 111. Disconnecting switch operation hole; 112. Grounding switch operation hole; 120. First elongated hole; 121. Locking part; 122. Sliding part; 130. Connecting rod; 140. Locking assembly; 141. Washer; 142. Second limit sleeve; 1421. First ring part; 1422. Second ring part; 143. Locking nut;

[0042] 200, shield; 210, connection hole; 220, isolation clearance opening; 230, grounding clearance opening; 240, second elongated hole;

[0043] 300, Locking bar; 310, Locking section; 320, Unlocking section; 321, Mounting hole; 330, Connecting section;

[0044] 400. Elastic components;

[0045] 500, handle; 510, countersunk hole; 520, threaded hole;

[0046] 600, limit pin;

[0047] 700, retaining ring;

[0048] 800, First Limiting Sleeve. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0050] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0053] This embodiment provides an interlocking device that can lock and unlock a cover plate to ensure the reliability of the cover plate blocking the operating hole. Furthermore, it has a simple structure and is easy to operate.

[0054] Specifically, such as Figures 1-7 As shown, the interlocking device includes an operation panel 100, a cover plate 200, a locking rod 300, and an elastic element 400. The operation panel 100 has an operation hole 110 and a first elongated hole 120. The operation hole 110 is for inserting an operating handle to operate the switch inside the switching device. The first elongated hole 120 includes a locking part 121 and a sliding part 122. The cover plate 200 is slidably disposed inside the operation panel 100. The cover plate 200 can either block or expose the operation hole 110 by sliding. When the cover plate 200 blocks the operation hole 110, the operating handle cannot be inserted into the operation hole 110 to prevent accidental operation; when the operation hole 110 is exposed, the operating handle can be inserted into the operation hole 110. The cover plate 200 has a connecting hole 210 corresponding to the first elongated hole 120, and the connecting hole 210 is used to connect to the locking rod 300. The locking lever 300 includes a locking section 310 and an unlocking section 320. One end of the unlocking section 320 is connected to the locking section 310, and the other end slides along its own axial direction through the first elongated hole 120 and the connecting hole 210. The locking section 310 is used to cooperate with the locking part 121 to keep the cover plate 200 in the position of blocking the operation hole 110. Pulling the locking lever 300 separates the locking section 310 from the locking part 121, and the unlocking section 320 can slide within the sliding part 122 to move the cover plate 200 away from the operation hole 110. The elastic member 400 is configured to always have a tendency to pull the locking section 310 closer to the operation panel 100.

[0055] The method of using this interlocking device is as follows:

[0056] See also Figure 2 and Figure 5 When the switching equipment is not required to be operated, the locking section 310 of the control lever 300 engages with the locking part 121. At this time, the locking part 121 locks the lever 300 in this position, that is, it locks the cover plate 200 connected to the lever 300 in the position of blocking the operating hole 110. This improves the reliability of the cover plate 200 blocking the operating hole 110 and effectively prevents the operating hole 110 from being exposed due to equipment vibration, thus providing a better effect in preventing misoperation. Furthermore, the elastic element 400 can keep the locking section 310 engaged with the locking part 121 under the action of elastic force, reducing the risk of the locking section 310 separating from the locking part 121 due to equipment vibration, and further improving the reliability of the cover plate 200 blocking the operating hole 110.

[0057] See also Figure 6When the operating hole 110 needs to be exposed, the locking rod 300 is pulled outward along the axial direction of the locking rod 300 to overcome the elastic force of the elastic element 400, so that the locking section 310 is away from the operating panel 100, that is, the locking section 310 is separated from the locking part 121. At this time, part of the unlocking section 320 enters the first elongated hole 120. Then, the locking rod 300 is moved along the length direction of the first elongated hole 120, and the unlocking section 320 can slide in the sliding part 122 to drive the cover plate 200 away from the operating hole 110. The cover plate 200 moving away from the operating hole 110 will expose the operating hole 110, making operation convenient.

[0058] After the operation of the handle is completed, the locking lever 300 is moved in the opposite direction, causing the unlocking section 320 to slide in the sliding part 122 until it moves to the locking part 121 and the force applied to the locking lever 300 is removed. At this time, under the elastic force of the elastic member 400, the locking section 310 can automatically cooperate with the locking part 121.

[0059] The interlocking device provided in this embodiment can lock the cover plate 200 by cooperating with the locking section 310 and the locking part 121, and can unlock the cover plate 200 by pulling the locking rod 300. It has a simple structure, is easy to operate, and has good reliability in preventing accidental operation of the switching equipment.

[0060] It is understandable that the elastic element 400 is optional but not limited to a spring.

[0061] Optionally, see [link to relevant documentation] Figure 2 , Figure 3 , Figures 5-7 In this embodiment, the locking segment 310, through a clearance fit with the locking part 121, keeps the cover plate 200 in the position of blocking the operation hole 110. In order to prevent the locking segment 310 from being pulled out of the locking part 121 by the elastic member 400, when the locking segment 310 and the locking part 121 are in a clearance fit, the locking segment 310 abuts against the cover plate 200 along the axial direction of the locking segment 310.

[0062] Furthermore, when the locking section 310 and the locking part 121 are in clearance fit, the locking section 310 can abut against the inner peripheral wall of the locking part 121 along the extension direction of the first elongated hole 120, so as to restrict the locking section 310 from entering the sliding part 122, thereby ensuring the reliability of the operation of the cover plate 200 blocking the operation hole 110.

[0063] For example, see [link to previous article] Figure 2 , Figure 3 , Figures 5-7The locking part 121 is a limiting hole, which communicates with the sliding part 122. The diameter a of the limiting hole is greater than the width b of the sliding part 122. The limiting hole can be formed by providing a concave arc surface on the inner wall of the first elongated hole 120. It can be understood that, apart from the limiting hole, the part enclosed by the two opposing inner walls of the first elongated hole 120 is the sliding part 122.

[0064] The locking section 310 can be clearance-fitted with the limiting hole, and the diameter c of the locking section 310 is greater than the width b of the sliding part 122. That is, when the locking section 310 is clearance-fitted with the limiting hole, if the locking rod 300 is moved along the length direction of the first elongated hole 120, the locking section 310 cannot enter the sliding part 122, thus ensuring the reliability of the fit between the locking section 310 and the limiting hole. However, since the locking section 310 and the limiting hole are clearance-fitted, in order to prevent the locking rod 300 from being pulled into the inside of the operation panel 100 under the action of the elastic member 400, the diameter c of the locking section 310 is greater than the diameter e of the connecting hole 210. That is, when the locking section 310 is clearance-fitted with the limiting hole, the locking section 310 will abut against the cover plate 200 under the action of the elastic member 400, thus ensuring the reliability of the installation of the locking rod 300.

[0065] In this embodiment, the diameter c of the locking segment 310 is greater than the diameter d of the unlocking segment 320.

[0066] It is worth noting that, in order to improve the synchronization of the movement of the locking rod 300 and the cover plate 200, the unlocking section 320 should be fitted with the connection hole 210 with a clearance.

[0067] Further, see also Figure 1 and Figure 2 In this embodiment, the operating hole 110 includes a disconnect switch operating hole 111 and a grounding switch operating hole 112. Inserting the operating handle into the disconnect switch operating hole 111 allows operation of the disconnect switch in the switching equipment, and inserting the operating handle into the grounding switch operating hole 112 allows operation of the grounding switch in the switching equipment. The cover plate 200 is provided with an isolation clearance opening 220 and a grounding clearance opening 230. When the isolation clearance opening 220 is opposite to the disconnect switch operating hole 111, the disconnect switch operating hole 111 is exposed; when the grounding clearance opening 230 is opposite to the grounding switch operating hole 112, the grounding switch operating hole 112 is exposed. Three locking parts 121 are provided, spaced apart along the length of the first elongated hole 120. For ease of understanding, the three locking parts 121 are defined as the first locking part, the second locking part, and the third locking part. Figure 2 In the middle, the first locking part, the second locking part, and the third locking part are arranged sequentially from left to right.

[0068] Specifically, when the locking section 310 engages with the first locking part, the cover plate 200 simultaneously blocks the disconnect switch operating hole 111 and the grounding switch operating hole 112. When the locking section 310 engages with the second locking part, the isolation clearance opening 220 faces the disconnect switch operating hole 111, at which point the disconnect switch operating hole 111 is exposed, while the grounding switch operating hole 112 is blocked. When the locking section 310 engages with the third locking part, the grounding clearance opening 230 faces the grounding switch operating hole 112, at which point the grounding switch operating hole 112 is exposed, while the disconnect switch operating hole 111 is blocked. By providing three locking parts 121, the reliability of the cover plate 200 in different working positions can be improved.

[0069] Understandably, depending on the work requirements, the locking section 310 can be controlled to cooperate with the corresponding first locking part, second locking part, or third locking part.

[0070] Optionally, in this embodiment, three locking parts 121 are respectively disposed at both ends and the middle of the first elongated hole 120.

[0071] Furthermore, such as Figures 5-8 As shown, a handle 500 is provided at the end of the locking section 310 away from the unlocking section 320. The handle 500 facilitates the operation of the locking lever 300.

[0072] Optionally, see [link to relevant documentation] Figures 5-8 In this embodiment, the handle 500 is provided with a countersunk hole 510 and a threaded hole 520 connected to the countersunk hole 510. The locking section 310 is provided with a connecting section 330 at the end away from the unlocking section 320. The connecting section 330 is provided with an external thread. The handle 500 is connected to the connecting section 330 through the threaded hole 520. Furthermore, part of the locking section 310 enters the countersunk hole 510 so as to protect the locking section 310 through the handle 500.

[0073] Furthermore, the handle 500 can abut against the outside of the operation panel 100. With this configuration, even for a lock section 310 and a locking part 121 with a clearance fit, the handle 500 can limit the lock section 310 to ensure the reliability of the fit between the lock section 310 and the locking part 121.

[0074] Optionally, the handle 500 is provided with an anti-slip structure (not shown in the figure). By providing an anti-slip structure, the friction between the operator's hand and the handle 500 can be increased, making it easier for the operator to grip the handle 500.

[0075] In this embodiment, the anti-slip structure is knurled on the outer peripheral wall of the handle 500. In other embodiments, the anti-slip structure can be other types, such as an anti-slip sleeve, etc., as needed, and this application does not impose any specific limitations.

[0076] Further, see also Figure 5 and Figure 6 One end of the elastic element 400 is connected to the cover plate 200, and the other end is connected to the end of the unlocking section 320 away from the locking section 310. Specifically, in this embodiment, the elastic element 400 is sleeved on the unlocking section 320, and a limiting pin 600 is provided at the end of the unlocking section 320 away from the locking section 310. One end of the elastic element 400 abuts against the cover plate 200, and the other end abuts against the limiting pin 600. This arrangement facilitates the installation of the elastic element 400.

[0077] Optionally, see [link to relevant documentation] Figure 7 In this embodiment, the unlocking section 320 is provided with a through mounting hole 321, and the limiting pin 600 is fixed in the mounting hole 321.

[0078] Further, see also Figure 5 and Figure 6 A retaining ring 700 is fitted onto the unlocking section 320. One side of the retaining ring 700 abuts against the other end of the elastic member 400, and the other side of the retaining ring 700 abuts against the limiting pin 600. The other end of the elastic member 400 is fixed by the retaining ring 700 abutting against the elastic member 400. The contact area is large, and the effect of fixing the elastic member 400 is better.

[0079] Furthermore, such as Figure 5 , Figure 6 and Figure 9 As shown, a first limiting sleeve 800 is fitted onto the unlocking section 320. The first limiting sleeve 800 is located between the cover plate 200 and the limiting pin 600. The elastic element 400 is fitted outside the first limiting sleeve 800. The length of the first limiting sleeve 800 is less than the maximum distance between the cover plate 200 and the limiting pin 600. With this configuration, when the locking rod 300 is pulled outward a certain distance along its own axial direction, one end of the first limiting sleeve 800 abuts against the cover plate 200, and the other end abuts against the limiting pin 600. At this point, the locking rod 300 cannot be pulled any further. That is, the first limiting sleeve 800 can limit the distance the locking rod 300 can be pulled, preventing the locking rod 300 from being pulled too far.

[0080] Further, see also Figure 3 , Figure 5 and Figure 6The cover plate 200 has a second elongated hole 240. One end of the connecting rod 130 is connected to the operation panel 100, and the other end passes through the second elongated hole 240. A locking component 140 is installed on the connecting rod 130 to restrict the movement of the cover plate 200 in a direction perpendicular to the operation panel 100. Through the cooperation of the connecting rod 130 and the second elongated hole 240, a sliding connection between the cover plate 200 and the operation panel 100 can be achieved, resulting in a simple structure. Furthermore, by setting the locking component 140 to restrict the movement of the cover plate 200 in a direction perpendicular to the operation panel 100, the reliability of the sliding connection between the cover plate 200 and the operation panel 100 can be ensured, preventing the connecting rod 130 from disengaging from the second elongated hole 240.

[0081] Optionally, such as Figure 5 , Figure 6 and Figure 10 As shown, in this embodiment, the locking assembly 140 includes a washer 141, a second limiting sleeve 142, and a locking nut 143. The washer 141 is sleeved on the connecting rod 130 and abuts against the inner side of the operation panel 100. The second limiting sleeve 142 is sleeved on the connecting rod 130 and includes a first ring portion 1421 and a second ring portion 1422. The first ring portion 1421 abuts against the washer 141 and passes through a second elongated hole 240. The diameter of the second ring portion 1422 is larger than that of the first ring portion 1421. A cover plate 200 is located between the second ring portion 1422 and the washer 141. The connecting rod 130 has external threads and is connected to the locking nut 143 via these threads. The locking nut 143 is used to press the second limiting sleeve 142 against the washer 141. By using a shim 141 to separate the cover plate 200 from the operation panel 100, friction between the cover plate 200 and the operation panel 100 during sliding can be avoided, thus protecting the operation panel 100 and improving the smoothness of the cover plate 200's sliding. The cover plate 200 is limited by the second limiting sleeve 142 and the shim 141, restricting its movement along the vertical direction of the operation panel 100 while maintaining a simple structure and facilitating assembly. Furthermore, the shim 141 and the second limiting sleeve 142 are fixed by the cooperation of the locking nut 143 and the connecting rod 130, resulting in a simple structure and excellent fixing effect.

[0082] Optionally, the connecting rod 130 is a bolt.

[0083] It is worth noting that the first ring portion 1421 can slide within the second elongated hole 240 to ensure the smooth sliding of the cover plate 200.

[0084] This embodiment also provides a switching device, including an operating mechanism and the interlocking device described above, wherein the interlocking device is used for the operating mechanism.

[0085] The switchgear has good operational reliability due to the use of the aforementioned interlocking device.

[0086] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An interlocking device for switching equipment, characterized in that, The interlocking device includes: The operation panel (100) is provided with an operation hole (110) and a first elongated hole (120), the first elongated hole (120) including a locking part (121) and a sliding part (122); A cover plate (200) is slidably disposed on the inner side of the operation panel (100), and the cover plate (200) is provided with a connecting hole (210) corresponding to the first elongated hole (120); The locking rod (300) includes a locking section (310) and an unlocking section (320). One end of the unlocking section (320) is connected to the locking section (310), and the other end slides through the first elongated hole (120) and the connecting hole (210) along its own axial direction. The locking section (310) is used to cooperate with the locking part (121) to keep the cover plate (200) in the position of blocking the operating hole (110). Pulling the locking rod (300) separates the locking section (310) from the locking part (121). The unlocking section (320) can slide in the sliding part (122) to drive the cover plate (200) away from the operating hole (110). An elastic element (400) is configured to always have a tendency to pull the locking section (310) closer to the operation panel (100).

2. The interlocking device according to claim 1, characterized in that, The locking section (310) engages with the locking part (121) to keep the cover plate (200) in a position that blocks the operating hole (110); When the locking section (310) and the locking part (121) are in clearance fit, the locking section (310) abuts against the cover plate (200) along the axial direction of the locking section (310), and along the extension direction of the first elongated hole (120), the locking section (310) can abut against the inner peripheral wall of the locking part (121) to restrict the locking section (310) from entering the sliding part (122).

3. The interlocking device according to claim 1, characterized in that, The locking section (310) is provided with a handle (500) at the end away from the unlocking section (320).

4. The interlocking device according to claim 3, characterized in that, The handle (500) is provided with an anti-slip structure.

5. The interlocking device according to claim 1, characterized in that, The elastic element (400) is sleeved on the unlocking section (320). The unlocking section (320) has a limiting pin (600) at one end away from the locking section (310). One end of the elastic element (400) abuts against the cover plate (200), and the other end abuts against the limiting pin (600).

6. The interlocking device according to claim 5, characterized in that, A retaining ring (700) is fitted on the unlocking section (320). One side of the retaining ring (700) abuts against the other end of the elastic member (400), and the other side of the retaining ring (700) abuts against the limiting pin (600).

7. The interlocking device according to claim 5, characterized in that, A first limiting sleeve (800) is fitted on the unlocking section (320). The first limiting sleeve (800) is located between the cover plate (200) and the limiting pin (600). The elastic element (400) is fitted outside the first limiting sleeve (800). The length of the first limiting sleeve (800) is less than the maximum distance between the cover plate (200) and the limiting pin (600).

8. The interlocking device according to claim 1, characterized in that, The operating hole (110) includes an isolating switch operating hole (111) and a grounding switch operating hole (112). The cover plate (200) is provided with an isolation clearance opening (220) and a grounding clearance opening (230). The locking part (121) is provided in three parts. The three locking parts (121) are arranged at intervals along the length direction of the first elongated hole (120). The three locking parts (121) are defined as the first locking part, the second locking part, and the third locking part, respectively. When the locking section (310) cooperates with the first locking part, the cover plate (200) simultaneously blocks the disconnect switch operating hole (111) and the grounding switch operating hole (112); when the locking section (310) cooperates with the second locking part, the isolation clearance opening (220) is opposite to the disconnect switch operating hole (111); when the locking section (310) cooperates with the third locking part, the grounding clearance opening (230) is opposite to the grounding switch operating hole (112).

9. The interlocking device according to any one of claims 1-8, characterized in that, The cover plate (200) is provided with a second elongated hole (240). One end of the connecting rod (130) is connected to the operation panel (100), and the other end passes through the second elongated hole (240). A locking component (140) is installed on the connecting rod (130). The locking component (140) is used to restrict the movement of the cover plate (200) in a direction perpendicular to the operation panel (100).

10. The interlocking device according to claim 9, characterized in that, The locking assembly (140) includes: A gasket (141) is fitted onto the connecting rod (130) and attached to the inside of the operation panel (100); A second limiting sleeve (142) is fitted onto the connecting rod (130). The second limiting sleeve (142) includes a first ring portion (1421) and a second ring portion (1422). The first ring portion (1421) abuts against the gasket (141) and passes through the second elongated hole (240). The diameter of the second ring portion (1422) is larger than that of the first ring portion (1421). The cover plate (200) is located between the second ring portion (1422) and the gasket (141). The locking nut (143) is provided with an external thread on the connecting rod (130). The connecting rod (130) is connected to the locking nut (143) through the external thread. The locking nut (143) is used to press the second limiting sleeve (142) against the gasket (141).

11. A switching device, characterized in that, It includes an operating mechanism and an interlocking device according to any one of claims 1-10, wherein the interlocking device is used for the operating mechanism.

Images