Electrical secondary equipment locking device

Abstract

The utility model relates to the technical field of electrical secondary locking, and provides an electrical secondary equipment locking device which comprises an installation cabinet, electrical equipment and a locking box, a cabinet door is arranged on the installation cabinet, the electrical equipment is arranged at the inner bottom of the installation cabinet, an installation fixing device is arranged at the inner top of the installation cabinet, and the locking box is arranged in the installation fixing device. A linkage triggering device for triggering a thrust rod of the locking box to act is arranged between the mounting and fixing device and the cabinet door; when the cabinet door is opened, the trigger block is pulled away from the thrust rod through the connecting rod assembly, the locking box is disconnected, an electric appliance circuit is not electrified during maintenance, and personnel safety is guaranteed. Only when the cabinet door is closed, the trigger block can be pushed through the connecting rod assembly to extrude the thrust rod, the locking box is conducted, so that circuit connection is achieved, it can be guaranteed that power is off when the cabinet door is opened, normal work can be achieved only after the cabinet door is closed, influences of operators and an external tool box are avoided, and therefore electric shock events are reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electrical secondary locking, and more particularly relates to an electrical secondary device locking device. BACKGROUND

[0002] The locking device mainly refers to preventing misoperation of circuit breakers, preventing isolation switches from being operated with loads, preventing grounding lines (grounding switches) from being connected (operated) with electric charges, preventing circuit breakers (isolation switches) from being operated with grounding lines (grounding switches), and preventing entering an electric interval by mistake. There are four kinds of conventional misoperation prevention locking modes, namely, mechanical locking, program locking, electrical interlocking, and electromagnetic locking.

[0003] Patent No. CN221632434U discloses an electrical secondary device locking device, which comprises a shell, a locking box fixedly connected to the inner bottom wall of the shell, a push rod slidingly connected to the inner wall of the locking box, an insulating rod fixedly connected to one end of the push rod close to the locking box, five movable plates rotatably connected to the outer surface of the insulating rod, movable contacts movably hinged to the ends of the movable plates away from each other, ten limiting boxes fixedly connected to the inner bottom wall of the locking box, the movable contacts being located in the limiting boxes, two wire holders fixedly connected to the inner side wall of the locking box, five wire pieces provided in each wire holder, threaded pegs threadedly connected to the wire pieces, and conductive columns fixedly connected to the sides of the wire pieces close to each other. The electrical secondary device locking device can achieve the purpose of forcibly locking the primary device and preventing the user from violating the "five-prevention" rules.

[0004] The locking box is in contact with the cabinet door to press the push rod and realize internal circuit conduction. The locking box is located at the bottom of the cabinet close to the cabinet door, and the push rod is easy to be touched. When overhauling, the legs or tool boxes of the overhauler may touch and press the push rod, which may cause the internal electric conduction of the shell, and the overhauler may be at risk of electric shock. In addition, the locking box has no protective device, and the wire pieces and threaded pegs are exposed, which has certain danger and safety hazard. Practical new type content

[0005] In view of the deficiencies of the prior art, the purpose of the embodiments of the present application is to provide an electrical secondary device locking device, which changes the installation position of the locking box and adds a linkage triggering device to ensure that the electric conduction is not conducted when the cabinet door is opened, and ensure safety.

[0006] To achieve the above object, the technical scheme adopted by the present application is: provide a kind of electrical secondary equipment locking device, including: installation cabinet, electrical equipment and locking box, the cabinet door is equipped on the installation cabinet, the electrical equipment is arranged in the inner bottom of the installation cabinet, the inner top of the installation cabinet is equipped with installation fixing device, the locking box is arranged in the installation fixing device, the linkage trigger device that the push rod of the locking box is triggered is equipped between the installation fixing device and the cabinet door;

[0007] The linkage trigger device includes a connecting rod assembly and a trigger block, the trigger block is movably arranged in the installation fixing device and in contact with the push rod, one end of the connecting rod assembly is connected with the cabinet door, and the other end is connected with the trigger block.

[0008] In one embodiment, the installation fixing device includes a locker mounting rack, the locker mounting rack is a box body structure and one end is provided with an opening, the opening is arranged towards the cabinet door, and the trigger block is movably arranged through the opening; the bottom plate of the locker mounting rack is provided with a wire hole.

[0009] In one embodiment, a tension spring is arranged in the locker mounting rack, one end of the tension spring is fixed on the trigger block, and the other end is fixed on the inner side wall of the locker mounting rack away from the opening.

[0010] In one embodiment, the locker mounting rack is provided with a fixing lug on both sides of the bottom, and the fixing lug is fixedly connected with the side wall of the installation cabinet through a fastener.

[0011] In one embodiment, the locker mounting rack is provided with a sliding groove on the parallel two inner side walls, respectively, and the trigger block is provided with a convex strip on both sides and slidably assembled with the sliding grooves.

[0012] In one embodiment, the connecting rod assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first connecting block and a second connecting block.

[0013] The first connecting block is fixed on the inner side top of the cabinet door away from the hinge part of the cabinet door and the installation cabinet, and the second connecting block is fixed on the inner top of the installation cabinet and close to the hinge part of the cabinet door.

[0014] One end of the first connecting rod is rotatably arranged on the first connecting block, one end of the second connecting rod is rotatably arranged on the second connecting block, and the other end of the first connecting rod is rotatably connected with the other end of the second connecting rod.

[0015] One end of the third connecting rod is rotatably arranged on the second connecting rod, one end of the fourth connecting rod is rotatably arranged on the trigger block, and the other end of the third connecting rod and the other end of the fourth connecting rod are rotatably connected.

[0016] In one embodiment, a first connecting block is provided with a first rotating hole, one end of the first connecting rod is provided with a second rotating hole, and the first rotating hole and the second rotating hole are rotationally connected through a first connecting rotating shaft; the other end of the first connecting rod is provided with a third rotating hole;

[0017] The other end of the second connecting rod is provided with a fourth rotating hole; the third rotating hole and the fourth rotating hole are rotationally connected through a second connecting rotating shaft;

[0018] One end of the third connecting rod is provided with a fifth rotating hole, and the second connecting rod is provided with a sixth rotating hole; the fifth rotating hole and the sixth rotating hole are rotationally connected through a third connecting rotating shaft;

[0019] The other end of the third connecting rod is provided with a seventh rotating hole, and the other end of the fourth connecting rod is provided with an eighth rotating hole; the seventh rotating hole and the eighth rotating hole are rotationally connected through a fourth connecting rotating shaft;

[0020] One end of the fourth connecting rod is provided with a ninth rotating hole, and the ninth rotating hole is rotationally arranged on the trigger block through a fifth connecting rotating shaft.

[0021] In one embodiment, the cabinet door is provided with a door lock.

[0022] In one embodiment, the bottom of the installation box cabinet is provided with a heightening pad.

[0023] The electrical secondary equipment locking device provided in the application has the following advantages:

[0024] 1. By arranging the connecting rod assembly and the trigger block, when the cabinet door is opened, the trigger block is pulled away from the push rod by the connecting rod assembly, the locking box is disconnected, the electrical circuit is not powered during maintenance, and the safety of personnel is ensured; only when the cabinet door is closed, the trigger block can be pushed to press the push rod by the connecting rod assembly, the locking box is turned on, and the circuit is connected, so that the device can ensure that the cabinet door is powered off when opened, and only when the cabinet door is closed can it work normally, and it is not affected by the operator and the external tool box, thereby reducing the occurrence of electric shock events.

[0025] 2. By installing the locking box at the top of the installation box cabinet, the operator's sweat or other liquid during maintenance can be prevented from dropping on the locking box to cause short circuit or accidental conduction, and safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0027] Figure 1 A perspective structural schematic diagram of the electrical secondary equipment locking device provided by the embodiments of the present application is shown in the figure.

[0028] Figure 2 A sectional structural schematic diagram of the electrical secondary equipment locking device provided by the embodiments of the present application is shown in the figure.

[0029] Figure 3 A sectional structural schematic diagram of the mounting and fixing device in the electrical secondary equipment locking device provided by the embodiments of the present application is shown in the figure.

[0030] Figure 4 A schematic diagram of the positional relationship between the first connecting block, the second connecting block and the trigger block in the electrical secondary equipment locking device provided by the embodiments of the present application is shown in the figure.

[0031] Figure 5 A structural schematic diagram of the first connecting rod and the second connecting rod inside the cabinet door in the electrical secondary equipment locking device provided by the embodiments of the present application is shown in the figure.

[0032] Figure 6 An exploded structural schematic diagram of the connecting rod assembly in the electrical secondary equipment locking device provided by the embodiments of the present application is shown in the figure.

[0033] In the figure, various reference signs are as follows:

[0034] 1, locking box; 2, mounting and fixing device; 3, linkage trigger device; 4, cabinet door; 5, mounting cabinet; 6, heightening pad; 7, door lock; 8, electrical equipment; 200, locker mounting rack; 201, threading hole; 202, fixing lug; 300, first connecting block; 301, first rotating hole; 302, first connecting rotating shaft; 303, first connecting rod; 304, second rotating hole; 305, third rotating hole; 306, second connecting block; 307, second connecting rod; 308, fourth rotating hole; 309, second connecting rotating shaft; 310, sixth rotating hole; 311, third connecting rod; 312, fifth rotating hole; 313, third connecting rotating shaft; 314, seventh rotating hole; 315, fourth connecting rod; 316, eighth rotating hole; 317, ninth rotating hole; 318, fourth connecting rotating shaft; 319, fifth connecting rotating shaft; 320, trigger block; 321, tension spring; 322, sliding groove; 323, protruding strip. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, further detailed description of the present application will be given below in conjunction with the accompanying drawings and examples. It should be understood that the specific examples described herein are only intended to explain the present application and not to limit the present application.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0039] As shown in the Figures 1-6 The electrical secondary equipment locking device provided by the embodiment of the present application will now be described. The electrical secondary equipment locking device comprises a mounting cabinet 5, an electrical equipment 8 and a locking box 1, wherein the mounting cabinet 5 is hingedly provided with a cabinet door 4, the electrical equipment 8 is arranged at the inner bottom of the mounting cabinet 5, and the locking box 1 adopts the structure disclosed in Patent Publication No. CN221632434U.

[0040] The improvement of the present embodiment is that the inner top of the mounting cabinet 5 is provided with a mounting and fixing device 2, and the locking box 1 is arranged in the mounting and fixing device 2, so that the mounting position of the locking box 1 is higher and is protected from being closed, and short circuit or accidental conduction and the like are less likely to occur. Among them, the mounting and fixing device 2 and the cabinet door 4 are provided with a linkage triggering device 3 for triggering the action of the push rod of the locking box 1; linkage between the cabinet door 4 and the locking box 1 is realized through the linkage triggering device 3, so as to ensure that the locking box 1 is powered off when the cabinet door 4 is opened, and only when the cabinet door 4 is closed can the conduction be realized.

[0041] Specifically, the linkage trigger device 3 comprises a linkage assembly and a trigger block 320, the trigger block 320 is movably arranged in the mounting fixture 2 and in contact with the push rod, one end of the linkage assembly is connected with the cabinet door 4, and the other end is connected with the trigger block 320; when the cabinet door 4 is opened, the cabinet door 4 synchronously pulls the trigger block 320 away from the push rod through the linkage assembly, and the locking box 1 is automatically disconnected; when the cabinet door 4 is closed, the cabinet door 4 pushes the trigger block 320 to extrude the push rod through the linkage assembly, and the locking box 1 is turned on.

[0042] Specifically, in the embodiment, the mounting fixture 2 comprises a locker mounting rack 200, the locker mounting rack 200 is a box body structure and is provided with an opening at one end, and the locking box 1 is arranged in the locker mounting rack 200; the opening is arranged towards the cabinet door 4, the trigger block 320 movably passes through the opening, and the trigger block 320 is moved synchronously with the push rod; the bottom plate of the locker mounting rack 200 is provided with a threading hole 201, the threading hole 201 is used for threading, so that the locking box 1 is connected with the electrical appliance 8.

[0043] In the embodiment, in order to ensure that the trigger block 320 can ensure the normal triggering of the push rod when the cabinet door 4 is closed, a tension spring 321 is arranged in the locker mounting rack 200, one end of the tension spring 321 is fixed on the trigger block 320, and the other end is fixed on the inner side wall of the locker mounting rack 200 away from the opening; the tension spring 321 is used for pulling the trigger block 320 to move towards the push rod, so that the push rod makes the locking box 1 conductive after being stressed; when the cabinet door 4 is opened, the trigger block 320 is pulled outward by the linkage assembly, so that the tension spring 321 is stretched, the trigger block 320 cancels the pressure on the push rod, and the push rod disconnects the electrical conduction of the locking box 1 under the elastic force of the spring itself.

[0044] In the embodiment, the bottom of the locker mounting rack 200 is provided with a fixed lug 202 on each side, and the fixed lug 202 is fixedly connected with the side wall of the installation cabinet 5 through fasteners such as screws, so that the locker mounting rack 200 can be detachably installed.

[0045] In the embodiment, in order to ensure the stability of the movement of the trigger block 320, a sliding groove 322 is arranged on each of the two parallel inner side walls of the locker mounting rack 200, and a convex strip 323 is slidably arranged on each side of the trigger block 320, the convex strip 323 and the sliding groove 322 can linearly guide the movement of the trigger block 320.

[0046] As Figures 4-6As shown, in the embodiment, the linkage assembly comprises a first linkage 303, a second linkage 307, a third linkage 311, a fourth linkage 315, a first connecting block 300 and a second connecting block 306. The first connecting block 300 is fixed on the inner top of the cabinet door 4 away from the hinging position with the cabinet 5, and the second connecting block 306 is fixed on the inner top of the cabinet 5 close to the hinging position with the cabinet door 4. One end of the first linkage 303 is rotatably arranged on the first connecting block 300, one end of the second linkage 307 is rotatably arranged on the second connecting block 306, and the other end of the first linkage 303 is rotatably connected with the other end of the second linkage 307. One end of the third linkage 311 is rotatably arranged on the second linkage 307, one end of the fourth linkage 315 is rotatably arranged on the trigger block 320, and the other end of the third linkage 311 is rotatably connected with the other end of the fourth linkage 315.

[0047] When the cabinet door 4 is in the closed state, the second linkage 307, the third linkage 311 and the fourth linkage 315 are in a straight line state. When the cabinet door 4 is gradually opened, the cabinet door 4 drives the first linkage 303 to move, and the first linkage 303 pulls the second linkage 307 to rotate at the same time, which can be opened by 90°. The second linkage 307 pulls the fourth linkage 315 to move through the third linkage 311 at the same time, and the fourth linkage 315 pulls the trigger block 320 to move outward at the same time, so that the trigger block 320 no longer contacts the push rod of the locking box 1, the push rod resets under the action of its own elastic force, and the contact in the locking box 1 will be disconnected. At this time, the electrical equipment 8 is powered off, which is convenient for the operator to perform maintenance and other operations. If the operator accidentally presses the trigger block 320, since the trigger block 320 is pulled by the linkage assembly, if the trigger block 320 wants to reset inward, it needs to synchronously drive the cabinet door 4 to close, and the cabinet door 4 is blocked by the operator at this time and cannot be closed. Therefore, even if the trigger block 320 is accidentally pressed by the operator, it will not contact the locking box 1, thereby ensuring the safety of the operator during maintenance and reducing the possibility of accidental electric shock.

[0048] When the maintenance is completed, the operator leaves the front of the cabinet 5, and then closes the cabinet door 4. When the cabinet door 4 is closed, the above linkage assembly resets, and the fourth linkage 315 drives the trigger block 320 to reset. At this time, the trigger block 320 moves close to the locking box 1, and cooperates with the action of the tension spring 321, so that the trigger block 320 touches and compresses the push rod on the locking box 1. At this time, the locking box 1 restores the conduction.

[0049] Specifically, each connecting rod is rotationally connected through a rotating shaft. For example, a first rotating hole 301 is formed on the first connecting block 300, a second rotating hole 304 is formed on one end of the first connecting rod 303, and the first rotating hole 301 and the second rotating hole 304 are rotationally connected through a first connecting rotating shaft 302; a third rotating hole 305 is formed on the other end of the first connecting rod 303; one end of the second connecting rod 307 is rotationally arranged on the second connecting block 306 through a rotating shaft, a fourth rotating hole 308 is formed on the other end of the second connecting rod 307; the third rotating hole 305 and the fourth rotating hole 308 are rotationally connected through a second connecting rotating shaft 309; a fifth rotating hole 312 is formed on one end of the third connecting rod 311, a sixth rotating hole 310 is formed on the second connecting rod, the fifth rotating hole 312 and the sixth rotating hole 310 are rotationally connected through a third connecting rotating shaft 313; a seventh rotating hole 314 is formed on the other end of the third connecting rod 311, an eighth rotating hole 316 is formed on the other end of the fourth connecting rod 315, and the seventh rotating hole 314 and the eighth rotating hole 316 are rotationally connected through a fourth connecting rod 315 rotating shaft; a ninth rotating hole 317 is formed on one end of the fourth connecting rod 315, and the ninth rotating hole 317 is rotationally arranged on the trigger block 320 through a fifth connecting rotating shaft 319.

[0050] In the embodiment, the cabinet door 4 is provided with a door lock 7, and only the operator can open the cabinet door 4 through a key, so as to ensure safety. In the embodiment, the bottom of the installation cabinet 5 is provided with a heightening pad 6, which is used for realizing moisture-proof, heat dissipation and the like of the bottom of the installation cabinet 5.

[0051] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electrical secondary device lockout, comprising: The utility model relates to an installation cabinet (5), electrical equipment (8) and locking box (1), which is characterized in that: the inner top of the installation cabinet (5) is equipped with installation fixing device (2), the locking box (1) is arranged in the installation fixing device (2), and the linkage trigger device (3) for triggering the push rod action of the locking box (1) is arranged between the installation fixing device (2) and the cabinet door (4). The linkage trigger device (3) comprises a connecting rod assembly and a trigger block (320), the trigger block (320) is movably arranged in the installation fixing device (2) and used for contacting the push rod, one end of the connecting rod assembly is connected with the cabinet door (4), and the other end is connected with the trigger block (320).

2. The electrical secondary device blocking apparatus of claim 1, wherein: The installation fixing device (2) comprises a locker mounting frame (200), the locker mounting frame (200) is a box body structure and is provided with an opening at one end, the opening is arranged towards the cabinet door (4), and the trigger block (320) movably passes through the opening; a wire hole (201) is arranged on the bottom plate of the locker mounting frame (200).

3. The electrical secondary device blocking apparatus of claim 2, wherein: A tension spring (321) is arranged in the locker mounting frame (200), one end of the tension spring (321) is fixed on the trigger block (320), and the other end is fixed on the inner side wall of the locker mounting frame (200) away from the opening.

4. The electrical secondary device blocking apparatus of claim 3, wherein: Fixed ears (202) are arranged on the bottom of the two sides of the locker mounting frame (200), and the fixed ears (202) are fixedly connected with the side walls of the installation cabinet (5) through fasteners.

5. The electrical secondary device lockout of claim 4, wherein: Parallel two inner side walls of the locker mounting frame (200) are respectively provided with sliding grooves (322), and the two sides of the trigger block (320) are respectively provided with convex strips (323) slidably assembled with the sliding grooves (322).

6. The electrical secondary device lockout of any of claims 1-5, wherein: The connecting rod assembly comprises a first connecting rod (303), a second connecting rod (307), a third connecting rod (311), a fourth connecting rod (315), a first connecting block (300) and a second connecting block (306). The first connecting block (300) is fixed on the inner side top of the cabinet door (4) away from the hinged part of the cabinet door (4) and the installation cabinet (5), and the second connecting block (306) is fixed on the inner top of the installation cabinet (5) and close to the hinged part of the cabinet door (4); One end of the first connecting rod (303) is rotatably arranged on the first connecting block (300), one end of the second connecting rod (307) is rotatably arranged on the second connecting block (306), and the other end of the first connecting rod (303) is rotatably connected with the other end of the second connecting rod (307); One end of the third connecting rod (311) is rotatably arranged on the second connecting rod (307), one end of the fourth connecting rod (315) is rotatably arranged on the trigger block (320), and the other end of the third connecting rod (311) is rotatably connected with the other end of the fourth connecting rod (315).

7. The electrical secondary device blocking apparatus of claim 6, wherein: The first connecting block (300) is provided with a first rotating hole (301), one end of the first connecting rod (303) is provided with a second rotating hole (304), and the first rotating hole (301) and the second rotating hole (304) are rotationally connected through a first connecting rotating shaft (302); the other end of the first connecting rod (303) is provided with a third rotating hole (305); The other end of the second connecting rod (307) is provided with a fourth rotating hole (308); the third rotating hole (305) and the fourth rotating hole (308) are rotationally connected through a second connecting rotating shaft (309); One end of the third connecting rod (311) is provided with a fifth rotating hole (312), and the second connecting rod (307) is provided with a sixth rotating hole (310); the fifth rotating hole (312) and the sixth rotating hole (310) are rotationally connected through a third connecting rotating shaft (313); The other end of the third connecting rod (311) is provided with a seventh rotating hole (314), and the other end of the fourth connecting rod (315) is provided with an eighth rotating hole (316); the seventh rotating hole (314) and the eighth rotating hole (316) are rotationally connected through a fourth connecting rotating shaft (318); One end of the fourth connecting rod (315) is provided with a ninth rotating hole (317), and the ninth rotating hole (317) is rotationally arranged on the trigger block (320) through a fifth connecting rotating shaft (319).

8. The electrical secondary device blocking apparatus of claim 6, wherein: The cabinet door (4) is provided with a door lock (7).

9. The electrical secondary device blocking apparatus of claim 8, wherein: The bottom of the installation box cabinet (5) is provided with a heightening pad (6).

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