Locking mechanism for linking explosion-proof switch with switch cabinet

Abstract

The utility model relates to a locking mechanism for linking an explosion-proof switch with a switch cabinet, which comprises a driving rod, a main rod, a sliding rod and a turntable, the driving rod drives the main rod to rotate, the driving rod is provided with a switch output end for driving the explosion-proof switch, the turntable is arranged on the main rod and synchronously rotates along with the main rod, the sliding rod is arranged in parallel with the main rod and abuts against the turntable, and the sliding rod is connected with the main rod. The turntable is provided with a bulge and forms slippage of the slippage rod; and the other side, opposite to the turntable, of the slippage rod is provided with a cabinet door locking end.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of locking mechanisms, specifically to a kind of locking mechanism that explosion-proof switch is linked with switch cabinet. BACKGROUND

[0002] As key power control equipment, high-voltage vacuum switch is widely used in industrial fields such as mines, oil, and chemical industry, which exist explosive hazardous environment. Its core function is to safely turn on, carry and break the circuit current. To ensure the explosion-proof performance of the switch body and the safety of the operator, it is usually installed in a specially designed explosion-proof switch cabinet.

[0003] In the prior art, the operation of the high-voltage vacuum switch and the opening and closing of the cabinet door of the switch cabinet are usually two independent systems. The operator drives the switch to operate through an external mechanism, while the cabinet door is locked by an independent mechanical lock. This separate design has significant safety hazards. The operator may not lock the cabinet door after closing the switch due to negligence, resulting in the cabinet door being openable when the switch is in operation, which creates conditions for accidental touch or unauthorized access, and easily causes serious electric shock accidents. In addition, during equipment maintenance, the current safety measures rely on processes such as "hanging a sign and locking". If the personnel do not strictly follow the procedures or the cabinet door is not effectively locked, the equipment may be accidentally powered on during maintenance, which is extremely dangerous.

[0004] To solve this problem, the industry has made some improvements, such as using electrical interlocking, which cuts off the operating power supply by installing a micro switch on the cabinet door when the door is opened. However, the reliability of this solution highly depends on the integrity of the control circuit, which may be bypassed maliciously or unintentionally, resulting in failure. Another common approach is to set up a mechanical warning sign, but this still relies on the self-discipline of personnel and cannot provide mandatory physical constraints. In summary, there is a lack of a rigid linkage device in the prior art that can automatically and reliably lock the cabinet door of the switch cabinet when the switch is closed. Therefore, a design is needed to ensure that the cabinet door cannot be opened when the switch is in operation, thereby fundamentally eliminating the possibility of personnel contacting live parts. SUMMARY

[0005] To overcome the shortcomings of the prior art, the purpose of the utility model is to provide a locking mechanism that links an explosion-proof switch with a switch cabinet.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drive rod, a main rod, a sliding rod, and a turntable. The drive rod drives the main rod to rotate. The drive rod has a switch output end for driving the explosion-proof switch. The turntable is arranged on the main rod and rotates synchronously with the main rod. The sliding rod is arranged parallel to the main rod and abuts against the turntable. The turntable is provided with a protrusion that constitutes a sliding surface for the sliding rod. The other side of the sliding rod relative to the turntable has a cabinet door locking end.

[0007] By adopting the technical scheme, the driving rod drives the main rod to rotate synchronously by rotating the driving main rod; the protrusions on the rotating disc abut against the sliding rod, so that the sliding rod slides along the direction of the main rod, and the cabinet door locking end of the sliding rod moves, thereby locking or unlocking the cabinet door of the switch cabinet; meanwhile, the switch output end of the driving rod directly drives the action of the explosion-proof switch; the rigidity linkage of the explosion-proof switch and the cabinet door of the switch cabinet is realized, the cabinet door is automatically physically locked when the switch is closed, the risk that the cabinet door is mistakenly opened when the switch is in the live operation state is fundamentally eliminated, the operation safety is improved, and the problem that the personnel self-consciousness or the electrical interlocking is easily invalid in the prior art is avoided.

[0008] The utility model further sets up: still include worm wheel, be provided with worm portion on the driving rod, driving rod and main rod vertical setting, worm wheel setting in main rod and drive main rod rotation, worm wheel and worm portion meshing and constitute driving rod to main rod's drive.

[0009] By adopting the technical scheme, the worm portion on the driving rod meshes with the worm wheel on the main rod, and the rotary motion of the driving rod is transmitted to the main rod, and due to the worm wheel and worm drive characteristics, the main rod can only be driven to rotate by the driving rod; the self-locking characteristic of the worm wheel and worm is utilized to prevent the main rod from being reversely driven, ensure the stability and reliability of the interlocking state, avoid accidental loosening, enhance the durability and safety performance of the mechanism, and the ordinary transmission mode is more suitable for the explosion-proof environment.

[0010] The utility model further sets up: still include cabinet board, main rod and sliding rod set up in cabinet board and with cabinet board parallel, driving rod set up in cabinet board and with cabinet board vertical, worm portion and switch output end are located on the same side of cabinet board relative to main rod, driving rod still has cabinet board relative to main rod the other side's drive end.

[0011] By adopting the technical scheme, the mechanism layout is optimized, the switch output end and the driving end of the driving rod are arranged on the two sides of the cabinet board, the driving rod is integrated into the switch cabinet and the operation is simplified, space is saved, the compactness and the installation convenience of the overall structure are improved, and the narrow cabinet board environment is adapted.

[0012] The utility model further sets up: the protrusion is arc-shaped and is distributed along the outer periphery of the rotating disc, the number of the protrusions is two, a smooth section is arranged between the protrusions, the sliding rod abuts against the protrusions or the smooth section and constitutes the sliding of the sliding rod.

[0013] By adopting the technical scheme, the arc-shaped protrusions on the rotating disc are distributed along the outer periphery, two protrusions are connected by a smooth section, the sliding rod abuts against the protrusion or the smooth section, and slides with the rotating disc, the protrusion pushes the sliding rod to move, and the smooth section allows the sliding rod to keep position; the design of the protrusion and the smooth section makes the sliding rod move more smoothly, reduces impact and abrasion, ensures the accuracy and reliability of the cabinet door locking, prolongs the service life of the mechanism, and avoids the jamming problem of the mechanical interlocking in the prior art.

[0014] The utility model further sets up: still include the spring of pressing, the spring of pressing set up in the sliding rod and drive sliding rod and rotating disc abut.

[0015] By adopting the technical scheme, the spring of pressing continuously applies pressure to the sliding rod, so that the sliding rod is always in close contact with the surface of the rotating disc, the protrusion can reliably push the sliding rod to slide when the rotating disc rotates, the gap between the sliding rod and the rotating disc is eliminated, dislocation or response delay is prevented, the instantaneity and stability of the interlocking mechanism are improved, the cabinet door is quickly locked when opening and closing, and the mandatory and reliability of safety protection are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the plane view of the whole structure of the utility model;

[0017] Fig. 2 It is the structure schematic view of the rotating disc of the utility model;

[0018] Fig. 3 It is the structure schematic view of the whole of the utility model.

[0019] In the drawing: 1, drive rod; 11, switch output end; 12, worm part; 2, main rod; 3, sliding rod; 31, cabinet door locking end; 4, rotating disc; 41, protrusion; 42, smooth section; 5, worm wheel; 6, cabinet plate; 7, spring of pressing. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the protection scope of the utility model.

[0021] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as a limitation on the utility model. In addition, the term "first", "second", "third" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] As shown in Figs. 1-3 The utility model discloses a kind of interlocking mechanism of explosion-proof switch and switch cabinet linkage, including drive rod 1, main rod 2, sliding rod 3 and carousel 4, drive rod 1 drives main rod 2 rotation, drive rod 1 has switch output end 11 for driving explosion-proof switch, carousel 4 is set to main rod 2 and rotates synchronously with main rod 2, sliding rod 3 is parallel with main rod 2 and is abutted with carousel 4, and protrusion 41 is provided on carousel 4 and constitutes the sliding of sliding rod 3, and the other side of carousel 4 relative to sliding rod 3 has cabinet door locking end 31, drive rod 1 drives main rod 2 by rotation, and main rod 2 drives carousel 4 synchronous rotation;Protrusion 41 on carousel 4 is abutted with sliding rod 3, so that sliding rod 3 slides along the direction of main rod 2, and cabinet door locking end 31 of sliding rod 3 moves, to lock or unlock switch cabinet cabinet door;Meanwhile, switch output end 11 of drive rod 1 directly drives the action of explosion-proof switch;Rigid linkage of explosion-proof switch and switch cabinet cabinet door is realized, it is ensured that cabinet door is automatically physically locked when switch is closed, fundamentally eliminates the risk that cabinet door is opened by mistake when switch is electrified, improves operating safety, avoids the problem that personnel self-consciousness or electrical interlocking is easily ineffective in prior art, it needs to be explained, how switch is driven by switch output end 11 and the whole explosion-proof cabinet is locked by cabinet door locking end 31 are mature prior art, so it is not described again.

[0023] Also include worm gear 5, drive rod 1 is provided with worm part 12, drive rod 1 is vertically arranged with main rod 2, worm gear 5 is set to main rod 2 and drives main rod 2 rotation, worm gear 5 is engaged with worm part 12 and constitutes the drive of drive rod 1 to main rod 2, and worm part 12 on drive rod 1 is engaged with worm gear 5 on main rod 2, and the rotary motion of drive rod 1 is transmitted to main rod 2, because of worm gear 5 worm drive characteristics, main rod 2 can only be driven by drive rod 1 and rotate;Using the self-locking characteristic of worm gear 5 worm, prevent main rod 2 reverse drive, ensure the stability and reliability of interlocking state, avoid accidental loosening, enhance the durability and safety performance of mechanism, compared with ordinary transmission mode, it is more suitable for explosion-proof environment.

[0024] The cabinet plate 6 is further provided with the main rod 2 and the sliding rod 3 which are parallel to the cabinet plate 6, and the driving rod 1 which is perpendicular to the cabinet plate 6. The worm part 12 and the switch output end 11 are located on the same side of the cabinet plate 6 relative to the main rod 2. The driving rod 1 further has a driving end on the other side of the cabinet plate 6 relative to the main rod 2. The mechanism layout is optimized, the switch output end 11 and the driving end of the driving rod 1 are arranged on the two sides of the cabinet plate 6, which is convenient for integration into the switch cabinet and simplifies the operation, saves space, improves the compactness and installation convenience of the overall structure, and is suitable for narrow cabinet plate environment.

[0025] The protrusions 41 are arc-shaped and distributed along the outer periphery of the rotating disc 4. The number of the protrusions 41 is two. The smooth sections 42 are arranged between the protrusions 41. The sliding rod 3 abuts against the protrusions 41 or the smooth sections 42 and constitutes the sliding of the sliding rod 3. The arc-shaped protrusions 41 on the rotating disc 4 are distributed along the outer periphery. The two protrusions 41 are connected by the smooth sections 42. The sliding rod 3 abuts against the protrusions 41 or the smooth sections 42 and slides with the rotating disc 4. The protrusions 41 push the sliding rod 3 to move. The smooth sections 42 allow the sliding rod 3 to keep the position. The design of the protrusions 41 and the smooth sections 42 makes the movement of the sliding rod 3 more stable, reduces the impact and wear, ensures the accuracy and reliability of the cabinet door locking, prolongs the service life of the mechanism, and avoids the jamming problem of the mechanical interlocking in the prior art.

[0026] The abutting spring 7 is further arranged on the sliding rod 3 and drives the sliding rod 3 to abut against the rotating disc 4. The abutting spring 7 continuously applies pressure to the sliding rod 3, so that the sliding rod 3 is always in close contact with the surface of the rotating disc 4. When the rotating disc 4 rotates, the protrusions 41 can reliably push the sliding rod 3 to slide and eliminate the gap between the sliding rod 3 and the rotating disc 4, preventing dislocation or response delay, improving the immediacy and stability of the interlocking mechanism, ensuring the quick locking of the cabinet door during opening and closing, and enhancing the mandatory and reliable safety protection.

[0027] Working process: The working of the interlocking mechanism starts from the rotation of the driving rod 1. The driving rod 1 is engaged with the worm wheel 5 on the main rod 2 through the worm part 12 thereon, thereby driving the main rod 2 and the rotating disc 4 fixed thereon to rotate synchronously. The arc-shaped protrusions 41 are distributed along the outer periphery of the rotating disc 4. Under the action of the abutting spring 7, the sliding rod 3 which always abuts against the rotating disc 4 produces axial sliding with the profile of the protrusions 41. This sliding is finally converted into the locking or unlocking action of the sliding rod 3 end on the cabinet door of the switch cabinet. At the same time, the other end of the driving rod 1 directly drives the actuator of the explosion-proof switch, thereby realizing the synchronous linkage of the switch operation and the cabinet door locking.

Claims

1. A locking mechanism for interlocking an explosion-proof switch with a switchgear cabinet, characterized in that: The utility model relates to a cabinet door locking device, including drive rod (1), main rod (2), slip rod (3) and rotary disc (4), drive rod (1) drive main rod (2) rotation, drive rod (1) have switch output end (11) for driving explosion -proof switch, rotary disc (4) set up in main rod (2) and with main rod (2) synchronous rotation, slip rod (3) with main rod (2) parallel setting and with rotary disc (4) resistance, rotary disc (4) set up with convex (41) and constitute the slip of slip rod (3), slip rod (3) relative rotary disc (4) another side have cabinet door locking end (31).

2. The interlocking mechanism for connecting the explosion-proof switch with the switch cabinet according to claim 1, characterized in that: Still include worm gear (5), drive rod (1) set up with worm part (12), drive rod (1) with main rod (2) vertical setting, worm gear (5) set up in main rod (2) and drive main rod (2) rotation, worm gear (5) with worm part (12) is engaged and constitutes the drive of drive rod (1) to main rod (2).

3. The interlocking mechanism for connecting the explosion-proof switch with the switch cabinet according to claim 2, characterized in that: Still include cabinet board (6), main rod (2) with slip rod (3) set up in cabinet board (6) and with cabinet board (6) parallel, drive rod (1) set up in cabinet board (6) and with cabinet board (6) vertical, worm part (12) with switch output end (11) are located cabinet board (6) relative main rod (2) same side, drive rod (1) still have cabinet board (6) relative main rod (2) another side's drive end.

4. The interlocking mechanism for connecting the explosion-proof switch with the switch cabinet according to claim 1, characterized in that: The convex (41) is arc-shaped and is distributed along the outer periphery of the rotary disc (4), the number of the convex (41) is two, a smooth section (42) is arranged between the convex (41), the slip rod (3) abuts against the convex (41) or the smooth section (42) and constitutes the sliding of the slip rod (3).

5. The interlocking mechanism for interlocking the explosion-proof switch with the switch cabinet according to claim 1, characterized in that: Still include resistance spring (7), resistance spring (7) set up in slip rod (3) and drive slip rod (3) with rotary disc (4) resistance.

Images