Station locking device for movable switch cabinet and movable switch cabinet with same

Abstract

The utility model relates to a station locking device for a movable switch cabinet and a movable switch cabinet with the same, and the station locking device comprises a lock catch assembly which comprises a lock catch main body which is fixed to a cabinet body side plate and extends from the outer side of the cabinet body side plate to the inner side of the cabinet body side plate, and a lock catch core body which extends out from the end part of the inner side of the lock catch main body, the lock catch core body can rotate relative to the lock catch main body; the transmission cam is arranged on the lock catch core body and can rotate along with the rotation of the lock catch core body; the sliding rod is arranged on the inner side of the cabinet body side plate in a sliding mode, and one end of the sliding rod abuts against the transmission cam, so that when the lock catch core body responds to the locking action and rotates relative to the lock catch body, the transmission cam can push the sliding rod to move towards the movable part; and the movable plate is prevented from moving to expose the operation hole until the sliding rod moves to the moving path of the movable part.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a station locking device for a withdrawable switchgear and a withdrawable switchgear having the same. Background Technology

[0002] Removable switchgear, such as drawer-type or truck-type switchgear, is widely used in power systems due to its advantages of convenient maintenance and reliable power supply, providing short-circuit protection, overload protection, and circuit switching control. This type of switchgear typically includes a cabinet, an operating mechanism installed within the cabinet, and removable components. Operators can control the operating mechanism to move the removable components relative to the cabinet, thereby switching the components to an isolated position, a test position, or a connected position. However, in existing switchgear technology, even after the removable components are moved into place relative to the cabinet, there is still a risk of displacement, such as due to operator error, which could adversely affect the safety of the switchgear.

[0003] Therefore, there is a need in this field for workstation locking devices that can improve the reliability and safety of switchgear. Utility Model Content

[0004] The present invention aims to provide a workstation locking device that can at least solve some of the above-mentioned problems.

[0005] This utility model also aims to provide a removable switch cabinet that applies the above-mentioned improved workstation locking device.

[0006] According to one aspect of the present invention, a workstation locking device for a retractable switch cabinet is provided. The retractable switch cabinet includes a cabinet side plate having an operating hole thereon and a movable part disposed inside the cabinet side plate to cover the operating hole. The movable part is configured to move relative to the cabinet side plate to expose the operating hole. The workstation locking device includes a latch assembly comprising a latch body fixed to the cabinet side plate and extending from the outside to the inside of the cabinet side plate, and a latch core extending from the inner end of the latch body. The buckle core is configured to rotate relative to the buckle body; a drive cam is mounted to the buckle core and configured to rotate with the buckle core; a sliding rod is slidably arranged inside the cabinet side panel and one end abuts against the drive cam, so that when the buckle core rotates relative to the buckle body in response to a locking action, the drive cam can push the sliding rod toward the movable part until the sliding rod moves into the movement path of the movable part and prevents the movable plate from moving to expose the operating hole.

[0007] Compared with existing technologies, the workstation locking device in this invention cooperates with the movable part used to cover and expose the operating hole. When the removable switch cabinet moves to any desired workstation, the locking assembly drives the sliding rod to move along the movement path of the movable part via the transmission cam, thereby restricting the movement of the movable part and maintaining the operation hole covered, thus preventing the operating handle from being inserted into the operation hole. This minimizes operator error and unauthorized operation. Furthermore, the rotation of the transmission cam is converted into the linear movement of the sliding rod, resulting in a simple structure and space-saving design.

[0008] Preferably, the removable switch cabinet further includes a removable component arranged inside the cabinet side panel and capable of moving relative to the cabinet side panel to different work positions. The work position locking device further includes a limiting rod, which is movably installed inside the cabinet side panel and can move with the removable component to different work positions. The limiting rod is configured to be located in the movement path of the sliding rod while moving to the desired work position, thereby preventing the sliding rod from moving into the movement path of the movable part.

[0009] Preferably, the workstation locking device further includes: a pair of support plates, which are fixedly installed to the inner side of the cabinet side panel and are spaced apart from each other along the sliding direction of the sliding rod, and each support plate is provided with a guide hole through the thickness direction for the sliding rod to pass through.

[0010] Preferably, the sliding rod is divided along its sliding direction into a driving section adjacent to the transmission cam and a functional section adjacent to the movable part, wherein the outer contour of the functional section is reduced relative to the outer contour of the driving section.

[0011] Preferably, the workstation locking device further includes: an elastic element, which is sleeved on the driving section of the sliding rod and arranged between the driving section of the sliding rod and a support plate adjacent to the movable part, so that the sliding rod moves to the moving path of the movable part against the force of the elastic element.

[0012] Preferably, the transmission cam includes a base circle portion having a mounting hole for fitting into the latch core and a lift portion extending radially outward from the base circle portion and axially toward the latch body.

[0013] Preferably, the end of the sliding rod adjacent to the drive cam is designed to have an engagement surface abutting against the base circle portion of the drive cam and an engagement plane abutting against the lift portion of the drive cam, wherein as the drive cam rotates, the lift portion disengages from the engagement plane and abuts against the engagement surface.

[0014] Preferably, the limiting rod is configured to be located in the movement path of the sliding rod while moving to the connecting position.

[0015] Preferably, the limiting rod is configured to allow the sliding rod to move to the movement path of the movable part when moved to the isolation position or the test position.

[0016] According to another aspect of the present invention, a removable switch cabinet is also provided, which includes a cabinet side plate having an operating hole thereon and a movable part arranged inside the cabinet side plate to cover the operating hole. The movable part is configured to be movable relative to the cabinet side plate to expose the operating hole. The removable switch cabinet also includes the aforementioned workstation locking device.

[0017] Other features and advantages of this invention will partly be apparent to those skilled in the art upon reading this application, and partly will be described below in conjunction with the accompanying drawings in the detailed description. Attached Figure Description

[0018] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a first partial perspective view of a removable switch cabinet including a workstation locking device according to an embodiment of the present invention, wherein the removable switch cabinet is not moved to the connected position and the workstation locking device is in the unlocked position.

[0020] Figure 2 yes Figure 1 The top view of the withdrawable switchgear shown;

[0021] Figure 3 yes Figure 1 A perspective view of the station locking device of the withdrawable switch cabinet shown;

[0022] Figure 4 This is a second partial schematic diagram of a removable switch cabinet including a workstation locking device according to an embodiment of the present utility model, wherein the removable switch cabinet is not moved to the connection position and the workstation locking device is in the locked position;

[0023] Figure 5 yes Figure 4 The top view of the withdrawable switchgear shown;

[0024] Figure 6 yes Figure 4 A perspective view of the station locking device of the withdrawable switch cabinet shown;

[0025] Figure 7 This is a third partial perspective view of a removable switch cabinet including a workstation locking device according to an embodiment of the present invention, wherein the removable switch cabinet is moved to a connection position.

[0026] Figure 8 yes Figure 7The top view of the withdrawable switchgear shown;

[0027] Figure 9 yes Figure 7 A perspective view of the station locking device of the retractable switchgear shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10-Workstation locking device; 11-Latch assembly; 111-Latch body; 112-Latch core; 113-Key; 12-Transmission cam; 121-Base circle portion; 122-Lifting portion; 13-Sliding rod; 13b-Matching surface; 131-Drive section; 132-Functional section; 14-Limit rod; 15-Support frame; 151-Mounting part; 152-Supporting part; 153-First support plate; 154-Transition part; 155-Second support plate; 16-Elastic element; 20-Cabinet side panel; 30-Moving part; 40-Removable component. Detailed Implementation

[0030] The schematic scheme of the workstation locking device for a retractable switchgear disclosed in this utility model is now described in detail with reference to the accompanying drawings. Although the drawings are provided to illustrate some embodiments of this utility model, the drawings are not necessarily drawn to the dimensions of the specific embodiments, and certain features may be enlarged, removed, or partially cut to better illustrate and explain the disclosure of this utility model. Some components in the drawings may be repositioned according to actual needs without affecting the technical effect. The phrase "in the drawings" or similar terms appearing in the specification do not necessarily refer to all drawings or examples.

[0031] Certain directional terms used in the description of the accompanying drawings below, such as “inner,” “outer,” “above,” “below,” and other directional terms, will be understood to have their normal meaning and refer to those directions as normally viewed in the accompanying drawings. Unless otherwise specified, the directional terms used in this specification are generally in accordance with the conventional directions understood by those skilled in the art.

[0032] The terms “first,” “first,” “second,” “second,” and similar terms used in this utility model do not indicate any order, quantity, or importance, but are used to distinguish one component from other components.

[0033] The terms "joining", "connection" and similar terms used in this utility model include both indirect connection of two components with the aid of an intermediate layer (e.g., adhesive, welding agent, etc.) or intermediate parts (e.g., connector, transition piece, etc.) and direct connection of two components without the aid of any intermediate layer (e.g., adhesive, welding agent, etc.) or intermediate parts (e.g., connector, transition piece, etc.).

[0034] Figures 1 to 9 The following example illustrates a removable switch cabinet to which the workstation locking device 10 of this utility model is applicable. The removable switch cabinet may include a cabinet body, an operating mechanism mounted to the cabinet body, and removable components. An operating hole may be provided on the cabinet side panel 20, such as the front side panel of the cabinet body, and a movable part 30, such as a small door of the operating mechanism, may be arranged on the rear side of the cabinet side panel 20 and obstruct the operating hole.

[0035] When it is necessary to operate the removable component located inside the side panel 20 of the removable switchgear, the movable part 30 can be moved upwards until the operating hole is exposed. Then, the operating handle of the operating component is passed through the operating hole and connected to the transmission part of the operating mechanism. This allows the removable component to be moved backwards from the isolated position to the test position or the connection position via the transmission mechanism. After the removable component is in place, the operating handle can disengage from the transmission part of the operating mechanism, and the movable part 30 returns downwards to the position blocking the operating hole. At this time, the station locking device 10 can cooperate with the movable part 30 to prevent accidental movement of the removable component relative to the cabinet by restricting the movement of the movable part 30, thereby improving the safety and reliability of the removable switchgear.

[0036] Understandably, the terms "before" and "after" used in this article refer to... Figure 2 The upper and lower directions in the attached diagram are shown below; "upper" and "lower" refer to... Figure 2 The attached diagram shows the outer and inner directions of the page, with "left" and "right" representing the left and right sides, respectively. Figure 2 The left and right directions shown in the attached diagram.

[0037] refer to Figures 1 to 3 The workstation locking device 10 may include a locking assembly 11, a transmission cam 12, and a sliding rod 13.

[0038] Specifically, the latch assembly 11 may include a latch body 111 and a latch core 112. The latch body 111 may be generally designed as a columnar structure extending in the front-to-back direction and extending through the cabinet side panel 20. The latch core 112 may be disposed inside the latch body 111 and extend rearward beyond the latch body 111. Thus, the front end of the latch body 111 can engage a matching key 113 to control the rotation of the latch core 112 relative to the latch body 111. For example, the latch core 112 may respond to the locking action of the key 113 to... Figures 1 to 3 The unlock position shown is rotated to Figures 4 to 6 The lock position is shown.

[0039] The transmission cam 12 is immovably connected to the portion of the latch core 112 extending beyond the latch body 111 relative to the latch core 112, so that the transmission cam 12 can rotate with the rotation of the latch core 112. For example, as shown in the figure, the latch core 112 may be a non-cylindrical structure, and the central region of the transmission cam 12 may have a mounting hole matching the outer contour of the non-cylindrical structure, so that the transmission cam 12 can be easily mounted to the latch core 112.

[0040] The sliding rod 13 is slidably arranged on the rear side of the cabinet side panel 20, with its right end abutting against the transmission cam 12, and its left end adjacent to and spaced apart from the movable part 30. Thus, when the latch core 112 moves from... Figures 1 to 3 The unlock position shown is rotated to Figures 4 to 6 When the lock position is shown, the transmission cam 12 pushes the sliding rod 13 to the right until it moves above the movable part 30. At this time, the sliding rod 13 restricts the upward movement of the movable part 30, thus preventing the movable part 30 from moving relative to the cabinet to expose the operating hole. This prevents the engagement of the operating handle with the operating mechanism when the removable part has been moved into place, thereby avoiding unauthorized operation that may cause the removable part to shift.

[0041] Optionally, the workstation locking device 10 may further include a limiting rod 14, which may be arranged on the movable component and extend in the front-rear direction to follow the movable component as it switches between different workstations. In the illustrated embodiment, for example, refer to... Figures 1 to 6 When the limiting rod 14 moves to the isolation position or test position following the movable component, the limiting rod 14 is always arranged behind the movable part 30 and spaced apart from the movable part 30. Therefore, the sliding rod 13 can move to the right above the movable part 30 via the transmission cam 12 under the locking action of the locking core 112. Further reference... Figures 7 to 9 When the limiting rod 14 moves to the connection position along with the removable component, the limiting rod 14 moves forward to the right side of the sliding rod 13, thereby preventing the sliding rod 13 from moving to the right towards the movable part 30, thus enabling the movable part 30 to be unlocked in the connection position to meet the user's specific needs. It is understood that, in embodiments not shown, depending on the user's different requirements, the limiting rod 14 may also be designed to prevent the movable part 30 from locking in the isolation position or the test position.

[0042] Alternatively, in the illustrated embodiments, for example referring to Figures 1 to 3The workstation locking device 10 may further include a support frame 15. The support frame 15 may include a mounting portion 151 extending in the left-right direction and arranged against the rear side of the cabinet side panel 20; a support portion 152 extending rearward from the lower side of the mounting portion 151; a first support plate 153 located to the right of the mounting portion 151 and the support portion 152; a transition portion 154 extending to the right from the rear side of the first support plate 153; and a second support plate 155 located to the right of the transition portion 154 and arranged opposite to the first support plate 153 in the left-right direction. The mounting portion 151 may have a through hole for the lock cylinder body to pass through, and the support portion 152 may be used to support the left end of the sliding rod 13 so that the rod portion of the sliding rod 13 can pass through the guide holes on the first support plate 153 and the second support plate 155, thereby ensuring the stability of the sliding rod 13 when pushed by the transmission cam 12.

[0043] Alternatively, in the illustrated embodiments, for example referring to Figures 1 to 6 The left end of the sliding rod 13 can be designed to have a mating plane and a recessed mating surface 13b extending to the right from the upper side of the mating plane. Correspondingly, the drive cam 12 is constructed to have a base circle portion 121 in which a mounting hole is provided and a lift portion 122 extending from the outer periphery of the base circle portion 121. The lift portion 122 extends radially outward and axially forward from the outer periphery of the base circle portion 121, thereby allowing the sliding rod 13 to be pushed via the lift portion 122 and saving space.

[0044] Specifically, in Figures 1 to 3 In the unlocked position shown, the engagement plane of the sliding rod 13 abuts against the left end of the lift portion 122, and the engagement surface 13b of the sliding rod 13 abuts against the outer periphery of the base circle portion 121. When the transmission cam 12 moves from... Figures 1 to 3 The unlock position shown is rotated to Figures 4 to 6 In the locked position shown, the lift portion 122 pushes the sliding rod 13 to the right by abutting against the engagement plane until the left end of the lift portion 122 rotates to disengage from the engagement plane and falls into the engagement surface 13b. Preferably, the curvature of the lift portion 122 can be designed to be the same as the curvature of the engagement surface 13b, so as to lock the sliding rod 13 in the locked position via the elastic element 16 described later.

[0045] Alternatively, in the illustrated embodiments, for example referring to Figures 1 to 6 The rod portion of the sliding rod 13 can be divided into a driving section 131 that is relatively to the left and a functional section 132 that is relatively to the right. The left end of the driving section 131 is provided with a mating plane and a mating curved surface 13b to cooperate with the transmission cam 12. The functional section 132 is recessed relative to the outer periphery of the driving section 131 to form a stepped structure between the two, so that the elastic member 16 can be clamped between the stepped structure and the second support plate 155 while being sleeved onto the functional section 132.

[0046] Therefore, when the sliding rod 13 moves to the right toward the movable part 30, the distance between the drive section 131 and the second support plate 155 decreases, thereby compressing the elastic member 16 located between the drive section 131 and the second support plate 155. When the sliding rod 13 moves above the movable part 30, the lift portion 122 of the transmission cam 12 abuts against the engagement surface 13b of the sliding rod 13, and the two remain abutting against each other under the force of the elastic member 16.

[0047] In an embodiment not shown, when it is necessary to move the workstation locking device 10 from... Figures 4 to 6 The locked position shown has been moved to Figures 1 to 3 When in the unlocked position, the key 113 can be used to rotate the latch core 112 and the transmission cam 12 by performing an unlocking action opposite to the aforementioned locking action. This causes the lifting portion 122 to disengage from the engagement surface 13b, and the sliding rod 13 returns to the unlocked position under the force of the elastic member 16.

[0048] It should be understood that although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0049] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes, modifications, and combinations made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A station locking device (10) for a removable switchgear, the removable switchgear comprising a cabinet side plate (20) having an operating hole thereon and a movable part (30) disposed inside the cabinet side plate (20) to cover the operating hole, the movable part (30) being configured to move relative to the cabinet side plate (20) to expose the operating hole, characterized in that, The workstation locking device (10) includes: The latch assembly (11) includes a latch body (111) fixed to the cabinet side panel (20) and extending from the outside to the inside of the cabinet side panel (20), and a latch core (112) extending from the inner end of the latch body (111), the latch core (112) being configured to rotate relative to the latch body (111); A transmission cam (12) is mounted to the latch core (112) and configured to rotate in response to the rotation of the latch core (112); A sliding rod (13) is slidably arranged inside the cabinet side panel (20) and one end abuts against the transmission cam (12). When the latch core (112) rotates relative to the latch body (111) in response to the locking action, the transmission cam (12) can push the sliding rod (13) toward the movable part (30) until the sliding rod (13) moves into the movement path of the movable part (30) and prevents the movable plate from moving to expose the operating hole.

2. The station locking device (10) for a removable switchgear according to claim 1, wherein the removable switchgear further includes a removable component arranged inside the side panel (20) of the cabinet and capable of moving relative to the side panel (20) to different stations, characterized in that, The workstation locking device (10) also includes: A limiting rod (14) is movably installed on the inside of the cabinet side panel (20) and can move with the removable component to different work positions. The limiting rod (14) is configured to be located in the movement path of the sliding rod (13) while moving to the desired work position, thereby preventing the sliding rod (13) from moving into the movement path of the movable part (30).

3. The station locking device (10) for a retractable switchgear according to claim 1, characterized in that, The workstation locking device (10) also includes: A pair of support plates are fixedly installed to the inside of the cabinet side panel (20) and are spaced apart from each other along the sliding direction of the sliding rod (13), and each support plate is provided with a guide hole through the thickness direction for the sliding rod (13) to pass through.

4. The station locking device (10) for a retractable switchgear according to claim 3, characterized in that, The sliding rod (13) is divided along its sliding direction into a driving section (131) adjacent to the transmission cam (12) and a functional section (132) adjacent to the movable part (30), the outer contour of the functional section (132) being reduced relative to the outer contour of the driving section (131).

5. The station locking device (10) for a retractable switchgear according to claim 4, characterized in that, The workstation locking device (10) also includes: An elastic element (16) is sleeved onto the drive section (131) of the sliding rod (13) and arranged between the drive section (131) of the sliding rod (13) and a support plate adjacent to the movable part (30) so that the sliding rod (13) moves to the movement path of the movable part (30) against the force of the elastic element (16).

6. The station locking device (10) for a retractable switchgear according to claim 1, characterized in that, The transmission cam (12) includes a base circle portion (121) having a mounting hole for fitting into the latch core (112) and a lift portion (122) extending radially outward from the base circle portion (121) and axially toward the latch body (111).

7. The station locking device (10) for a retractable switchgear according to claim 6, characterized in that, The end of the sliding rod (13) adjacent to the transmission cam (12) is designed to have an engagement surface (13b) abutting against the base circle portion (121) of the transmission cam (12) and an engagement plane abutting against the lift portion (122) of the transmission cam (12), wherein as the transmission cam (12) rotates, the lift portion (122) disengages from the engagement plane and abuts against the engagement surface (13b).

8. The station locking device (10) for a retractable switchgear according to claim 2, characterized in that, The limiting rod (14) is configured to be located in the movement path of the sliding rod (13) while moving to the connection position.

9. The station locking device (10) for a retractable switchgear according to claim 8, characterized in that, The limiting rod (14) is configured to allow the sliding rod (13) to move to the movement path of the movable part (30) when it is moved to the isolation position or the test position.

10. A removable switch cabinet, comprising a cabinet side panel (20) having an operating hole thereon and a movable part (30) disposed inside the cabinet side panel (20) to cover the operating hole, the movable part (30) being configured to move relative to the cabinet side panel (20) to expose the operating hole, characterized in that, The removable switch cabinet further includes a workstation locking device (10) according to any one of claims 1 to 9.

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