A connecting rod device for an explosion-proof box

Abstract

The utility model discloses a kind of connecting rod devices for explosion-proof box, it is related to the technical field of explosion-proof box accessory.The utility model includes mounting plate, the inside rotation of mounting plate is connected with rotating assembly, the bottom of rotating assembly is provided with pole lever assembly, the inside fixed mounting of pole lever assembly is provided with friction assembly, the outer surface of friction assembly is provided with linkage assembly, linkage assembly is installed on the outer surface of circuit breaker, and mounting plate is used to fix rotating assembly on the outer surface of explosion-proof box board.The utility model is connected through rotating assembly and pole lever assembly, pole lever assembly is located between explosion-proof box board and circuit breaker, and the switch of circuit breaker is located in the inside of pole lever assembly through linkage assembly, when rotating assembly is pushed to rotate, rotating assembly drives pole lever assembly to push linkage assembly to slide, linkage assembly drives the switch of circuit breaker to act, realize the opening of circuit breaker, pole lever assembly and linkage assembly structure are simple, and small space is occupied, without reserving larger space.

Description

Technical Field

[0001] This utility model belongs to the technical field of explosion-proof enclosure accessories, and specifically relates to a connecting rod device for explosion-proof enclosures. Background Technology

[0002] An explosion-proof enclosure is a shell structure with special explosion-proof performance. Its core principle is to effectively confine the flames and shock waves generated by an explosion inside the enclosure by precisely controlling the gaps, material strength and structural form of each component. This prevents the explosion from spreading to the external environment and thus prevents the explosion of flammable gases, dust and other substances in the outside, ensuring the safety of the surrounding environment and personnel.

[0003] The panel of an explosion-proof enclosure typically controls the on / off state of internal circuit breakers indirectly via an explosion-proof switch. While this control method meets explosion-proof requirements to a certain extent, it imposes strict limitations on the internal space of the enclosure. When the internal space is unsuitable due to factors such as compact component layout or limited installation space, the explosion-proof switch is often difficult to install or operate properly. This not only affects the realization of control functions but also causes numerous inconveniences for equipment maintenance and use, reducing the applicability of the explosion-proof enclosure in complex operating conditions. Utility Model Content

[0004] To address the problem that explosion-proof switches are often difficult to install or operate properly when the space inside the enclosure is unsuitable due to the compact layout of components or the limited reserved installation space, this utility model proposes a linkage device for explosion-proof enclosures to overcome the aforementioned technical problems existing in the relevant technologies.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a linkage device for an explosion-proof enclosure, comprising a mounting plate, a rotating assembly rotatably connected inside the mounting plate, a lever assembly at the bottom of the rotating assembly, a friction assembly fixedly installed inside the lever assembly, and a linkage assembly on the outer surface of the friction assembly. The linkage assembly is installed on the outer surface of a circuit breaker. The mounting plate is used to fix the rotating assembly to the outer surface of the explosion-proof enclosure plate. The rotating assembly drives the lever assembly to rotate, thereby actuating the linkage assembly and the circuit breaker switch inside the explosion-proof enclosure.

[0007] Furthermore, the rotating assembly includes a bushing that is threadedly connected to the explosion-proof box plate. A rotating seat is rotatably connected inside the bushing, and the rotating seat is rotatably connected to the mounting plate. A handle is fixedly connected to the outer surface of the rotating seat, and a retaining ring for the shaft is fixedly installed at the bottom of the bushing.

[0008] Furthermore, the lever assembly includes a square plate, the outer surface of which is respectively provided with a first waist-shaped groove and a second waist-shaped groove, and the bottom of the rotating seat is threaded with a connecting bolt, which passes through the first waist-shaped groove to fix the square plate to the bottom of the rotating seat.

[0009] Furthermore, the friction assembly includes a contact rod, the end of which is fixedly connected to a connecting plate, and the outer surface of the connecting plate is threaded with screws. The contact rod is slidably connected inside the second waist-shaped groove, and the connecting plate is fixedly connected to the outer surface of the square plate by screws.

[0010] Furthermore, the linkage component includes a round rod, which is slidably connected inside the second waist-shaped groove. A push-pull plate is fixedly connected to the lower end of the round rod. A slide rail is slidably connected to the outer surface of the push-pull plate. The slide rail is fixedly installed on the outer surface of the circuit breaker. A slot is opened on the outer surface of the push-pull plate, and a circuit breaker switch is slidably connected inside the slot.

[0011] Furthermore, the outer surface of the mounting plate is threaded with fixing bolts, and the mounting plate is installed on the outer surface of the explosion-proof box plate by fixing bolts.

[0012] Furthermore, the bushing is made of copper.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model connects a rotating assembly and a lever assembly. The lever assembly is located between the explosion-proof enclosure and the circuit breaker. The circuit breaker switch is located inside the lever assembly via a linkage assembly. When the rotating assembly is pushed to rotate, the rotating assembly drives the lever assembly to push the linkage assembly to slide. The linkage assembly drives the circuit breaker switch to operate, thereby opening the circuit breaker. The lever assembly and linkage assembly have a simple structure, occupy little space, do not require a large reserved space, and have strong applicability.

[0015] 2. This utility model uses a contact rod and a second waist-shaped groove for connection. The contact rod is located between the second waist-shaped groove and the round rod, replacing the square plate to contact the round rod. The material hardness of the contact rod is less than that of the round rod, which can avoid excessive wear on the round rod. When the contact rod is worn, the screws can be removed to separate it from the square plate and the connecting plate, which can release the limiting fixation of the connecting plate and the contact rod, making it easy to remove the contact rod for replacement.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the external contour structure of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the external contour structure of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the rotating component structure of this utility model;

[0021] Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 5 This is a schematic diagram of the external contour structure of the present invention. Figure 3 ;

[0023] Figure 6 This is a schematic diagram of the friction assembly structure of this utility model;

[0024] Figure 7 For the present utility model Figure 5 Enlarged schematic diagram of the structure at point B.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Mounting plate; 2. Rotating assembly; 201. Bushing; 202. Rotating seat; 203. Handle; 204. Shaft retaining ring; 205. Torsion spring; 3. Lever assembly; 301. Square plate; 302. First waist-shaped groove; 303. Second waist-shaped groove; 304. Connecting bolt; 4. Friction assembly; 401. Contact rod; 402. Connecting plate; 403. Screw; 5. Linkage assembly; 501. Round rod; 502. Push-pull plate; 503. Slide rail; 504. Groove; 6. Fixing bolt. Detailed Implementation

[0027] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0028] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements 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 the utility model.

[0029] Please see Figures 1-7 As shown, this utility model is a linkage device for an explosion-proof enclosure, including a mounting plate 1. A rotating assembly 2 is rotatably connected inside the mounting plate 1. A lever assembly 3 is provided at the bottom of the rotating assembly 2. A friction assembly 4 is fixedly installed inside the lever assembly 3. A linkage assembly 5 is provided on the outer surface of the friction assembly 4. The linkage assembly 5 is installed on the outer surface of the circuit breaker. The mounting plate 1 is used to fix the rotating assembly 2 to the outer surface of the explosion-proof enclosure. The rotating assembly 2 drives the lever assembly 3 to rotate, thereby pushing the linkage assembly 5 and the circuit breaker switch inside the explosion-proof enclosure.

[0030] The rotating assembly 2 is driven to rotate inside the mounting plate 1 and the explosion-proof box plate. The rotating assembly 2 drives the lever assembly 3 and the friction assembly 4 to rotate, so that the friction assembly 4 pushes the linkage assembly 5 to slide. The linkage assembly 5 pushes the circuit breaker switch to open the circuit breaker. In case of an accident, the tripping mechanism inside the circuit breaker will drive its switch to close. The circuit breaker switch will drive the linkage assembly 5, the friction assembly 4, the lever assembly 3 and the rotating assembly 2 to move in the opposite direction. The position change of the rotating assembly 2 can be used to determine that the circuit breaker has tripped due to a fault, thereby quickly identifying circuit abnormalities and providing a basis for subsequent fault diagnosis and reset operations.

[0031] This invention connects a rotating assembly 2 and a lever assembly 3. The lever assembly 3 is located between the explosion-proof enclosure and the circuit breaker. The circuit breaker switch is located inside the lever assembly 3 via a linkage assembly 5. When the rotating assembly 2 is rotated, the rotating assembly 2 drives the lever assembly 3 to push the linkage assembly 5 to slide. The linkage assembly 5 then drives the circuit breaker switch to operate, thus opening the circuit breaker. The lever assembly 3 and linkage assembly 5 have a simple structure, occupy little space, do not require a large reserved space, and have strong applicability.

[0032] In one embodiment, the rotating component 2 includes a bushing 201, which is threadedly connected to the explosion-proof box plate. A rotating seat 202 is rotatably connected inside the bushing 201. The rotating seat 202 is rotatably connected to the mounting plate 1. A handle 203 is fixedly connected to the outer surface of the rotating seat 202. A shaft retaining ring 204 is fixedly installed at the bottom of the bushing 201.

[0033] In one embodiment, the lever assembly 3 includes a square plate 301. The outer surface of the square plate 301 is provided with a first waist-shaped groove 302 and a second waist-shaped groove 303. The bottom of the rotating seat 202 is threaded with a connecting bolt 304. The connecting bolt 304 passes through the first waist-shaped groove 302 to fix the square plate 301 to the bottom of the rotating seat 202.

[0034] The rotating seat 202 drives the square plate 301 to rotate via the connecting bolt 304. The square plate 301 then drives the circuit breaker switch to open and close via the second slot 303. Because the square plate 301 is flat, it occupies less space when installed between the explosion-proof box and the circuit breaker, making it highly versatile.

[0035] In one embodiment, the friction assembly 4 includes a contact rod 401, the end of which is fixedly connected to a connecting plate 402, and the outer surface of the connecting plate 402 is threaded with a screw 403. The contact rod 401 is slidably connected inside the second waist-shaped groove 303, and the connecting plate 402 is fixedly connected to the outer surface of the square plate 301 by the screw 403.

[0036] In one embodiment, the linkage component 5 includes a round rod 501, which is slidably connected inside the second waist-shaped groove 303. A push-pull plate 502 is fixedly connected to the lower end of the round rod 501. A slide rail 503 is slidably connected to the outer surface of the push-pull plate 502. The slide rail 503 is fixedly installed on the outer surface of the circuit breaker. A slot 504 is opened on the outer surface of the push-pull plate 502. A circuit breaker switch is slidably connected inside the slot 504.

[0037] The square plate 301 drives the contact rod 401 to rotate, and the contact rod 401 pushes the round rod 501 to slide. The round rod 501 drives the push-pull plate 502 to slide along the slide rail 503. During the sliding process, the push-pull plate 502 pushes the circuit breaker switch to operate through the slot 504. The material hardness of the contact rod 401 is less than that of the round rod 501 to avoid excessive wear on the round rod 501. Rotating the screw 403 separates it from the square plate 301 and the connecting plate 402, which releases the limiting fixation on the connecting plate 402 and the contact rod 401, making it easy to remove the contact rod 401 for replacement.

[0038] In one embodiment, for the mounting plate 1, the outer surface of the mounting plate 1 is threaded with fixing bolts 6, and the mounting plate 1 is mounted on the outer surface of the explosion-proof box plate by fixing bolts 6.

[0039] There are multiple sets of fixing bolts 6. After passing through the mounting plate 1, the multiple sets of fixing bolts 6 are threadedly connected to the explosion-proof box plate to fix the mounting plate 1.

[0040] In one embodiment, the bushing 201 is made of copper.

[0041] The copper bushing 201 has strong wear resistance, improving the service life of the device. The explosion-proof thread between the bushing 201 and the explosion-proof enclosure is M20×1.5, with an axial engagement length ≥12, a pitch P=1.5, and ≥8 engagement threads. The explosion-proof mating surface between the bushing 201 and the switch handle (L≥12.5mm) has an inner edge to hole edge L=9mm, and a clearance ic≤0.1mm between the two surfaces.

[0042] In summary, the working principle of this utility model is as follows: the push handle 203 and the rotating seat 202 drive the square plate 301 to rotate through the connecting bolt 304. The square plate 301 drives the contact rod 401 to rotate. The contact rod 401 pushes the round rod 501 to slide. The round rod 501 drives the push-pull plate 502 to slide along the slide rail 503. During the sliding process, the push-pull plate 502 pushes the circuit breaker switch through the slot 504 to actuate, so that the circuit breaker is in the open state. In case of an accident, the tripping mechanism inside the circuit breaker drives its switch to close. The circuit breaker switch drives the push-pull plate 502, the contact rod 401, the square plate 301 and the handle 203 to move in the opposite direction. The change in the position of the handle 203 can be used to determine that the circuit breaker has tripped due to a fault, thereby quickly identifying the circuit abnormality and providing a basis for subsequent fault diagnosis and reset operations.

[0043] Through the above technical solution, 1. By connecting the rotating assembly 2 and the lever assembly 3, the lever assembly 3 is located between the explosion-proof enclosure and the circuit breaker, and the circuit breaker switch is located inside the lever assembly 3 via the linkage assembly 5. When the rotating assembly 2 is pushed to rotate, the rotating assembly 2 drives the lever assembly 3 to push the linkage assembly 5 to slide, and the linkage assembly 5 drives the circuit breaker switch to operate, thereby realizing the opening of the circuit breaker. The lever assembly 3 and the linkage assembly 5 have a simple structure, occupy little space, do not require a large reserved space, and have strong applicability; 2. The contact rod 401 is located between the second waist-shaped groove 303 and the round rod 501 through the connection of the contact rod 401 and the second waist-shaped groove 303. It replaces the square plate 301 to contact the round rod 501. The material hardness of the contact rod 401 is less than that of the round rod 501, which can avoid excessive wear on the round rod 501. When the contact rod 401 is worn, the screw 403 can be removed to separate it from the square plate 301 and the connecting plate 402. This can release the limiting fixation of the connecting plate 402 and the contact rod 401, making it easy to remove the contact rod 401 for replacement.

[0044] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A linkage device for an explosion-proof enclosure, comprising a mounting plate (1), characterized in that, The mounting plate (1) is rotatably connected to a rotating assembly (2). A lever assembly (3) is provided at the bottom of the rotating assembly (2). A friction assembly (4) is fixedly installed inside the lever assembly (3). A linkage assembly (5) is provided on the outer surface of the friction assembly (4). The linkage assembly (5) is installed on the outer surface of the circuit breaker. The mounting plate (1) is used to fix the rotating assembly (2) on the outer surface of the explosion-proof box. The rotating assembly (2) drives the lever assembly (3) to rotate, thereby pushing the linkage assembly (5) and the circuit breaker switch inside the explosion-proof box.

2. The linkage device for an explosion-proof enclosure according to claim 1, characterized in that, The rotating assembly (2) includes a bushing (201), which is threadedly connected to the explosion-proof box plate. A rotating seat (202) is rotatably connected inside the bushing (201). The rotating seat (202) is rotatably connected to the mounting plate (1). A handle (203) is fixedly connected to the outer surface of the rotating seat (202). A shaft retaining ring (204) is fixedly installed at the bottom of the bushing (201).

3. The linkage device for an explosion-proof enclosure according to claim 2, characterized in that, The lever assembly (3) includes a square plate (301), and the outer surface of the square plate (301) is provided with a first waist-shaped groove (302) and a second waist-shaped groove (303). The bottom of the rotating seat (202) is threaded with a connecting bolt (304), and the connecting bolt (304) passes through the first waist-shaped groove (302) to fix the square plate (301) to the bottom of the rotating seat (202).

4. The linkage device for an explosion-proof enclosure according to claim 3, characterized in that, The friction assembly (4) includes a contact rod (401), the end of which is fixedly connected to a connecting plate (402), and the outer surface of the connecting plate (402) is threaded with a screw (403). The contact rod (401) is slidably connected inside the second waist-shaped groove (303), and the connecting plate (402) is fixedly connected to the outer surface of the square plate (301) by the screw (403).

5. A connecting rod device for an explosion-proof enclosure according to claim 4, characterized in that, The linkage component (5) includes a round rod (501), which is slidably connected inside the second waist-shaped groove (303). A push-pull plate (502) is fixedly connected to the lower end of the round rod (501). A slide rail (503) is slidably connected to the outer surface of the push-pull plate (502). The slide rail (503) is fixedly installed on the outer surface of the circuit breaker. A slot (504) is opened on the outer surface of the push-pull plate (502). A circuit breaker switch is slidably connected inside the slot (504).

6. A connecting rod device for an explosion-proof enclosure according to claim 5, characterized in that, The outer surface of the mounting plate (1) is threaded with fixing bolts (6), and the mounting plate (1) is installed on the outer surface of the explosion-proof box plate by fixing bolts (6).

7. A connecting rod device for an explosion-proof enclosure according to claim 6, characterized in that, The bushing (201) is made of copper.

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