A locking device for closing a vertical disconnect switch and the disconnect switch itself.

Abstract

This utility model discloses a locking device and disconnecting switch for closing a vertically opening disconnecting switch, comprising: a moving contact structure with a mounting plate fixedly installed; a movable locking member having a locked state and a clearance state; an elastic reset member, one end connected to the mounting plate and the other end connected to the movable locking member; and a limiting structure fixedly installed on the mounting plate for abutting against the movable locking member in the locked state. When unlocking is required, this utility model only requires applying an external force to the movable locking member to overcome the force of the elastic reset member, thus switching it from the locked state (embedded in the locking hole of the stationary contact) to the clearance state, making operation convenient. The limiting structure and the elastic reset member ensure that the movable locking member is stably kept in the locked state, and the elastic reset member continuously applies an elastic force to the movable locking member, preventing it from easily disengaging from the locked state.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, and in particular, to a locking device for closing a vertical disconnecting switch and a disconnecting switch. Background Technology

[0002] In power transmission and distribution networks, vertical disconnect switches are important electrical equipment widely used for line isolation, switching, and circuit on / off control. Their operational reliability directly affects the safe and stable operation of the power system. When closed, disconnect switches must ensure a stable electrical connection between the moving and stationary contacts to prevent contact separation or poor contact due to external vibration, mechanical impact, or stress relaxation during long-term operation. Otherwise, it may lead to arcing, equipment overheating, or even power outages.

[0003] To achieve effective locking in the closed state, existing vertical disconnect switches are typically equipped with mechanical locking devices that restrict the relative displacement of the moving and stationary contacts through a locking structure. However, unlocking existing locking devices is cumbersome and cannot precisely control the range of motion of the locking element. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a locking device for closing a vertically opening disconnect switch.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A locking device for closing a vertically opening disconnector includes: a moving contact structure on which a mounting plate is fixedly mounted; a movable locking member having a locked state and a yielding state, the movable locking member being movably mounted on the mounting plate to achieve switching between the locked and yielding states, the movable locking member having a locking structure, the locking structure in the locked state being used to embed into a locking hole on the stationary contact in the closed state; an elastic reset member, one end connected to the mounting plate and the other end connected to the movable locking member, for applying an elastic force to the movable locking member in the yielding state toward the locked state; and a limiting structure fixedly mounted on the mounting plate for abutting against the movable locking member in the locked state to limit the range of motion of the movable locking member.

[0007] Furthermore, the movable locking component includes a movable plate, and the locking structure is a limiting hook connected to the movable plate. The movable plate is rotatably mounted on the mounting plate.

[0008] Furthermore, the limiting hook includes a connecting arm and a hook portion, the hook portion being connected to the end of the connecting arm away from the movable plate and protruding from the side of the connecting arm.

[0009] Furthermore, the mounting plate is provided with a clearance hole, and the edge of the movable plate is provided with an arc notch. In the locked state, the edge of the arc notch on the movable plate protrudes beyond the edge of the clearance hole, and in the clearance state, the edge of the arc notch on the movable plate is tangent to the edge of the clearance hole.

[0010] Furthermore, the hook portion and the connecting arm form a hook groove with an acute angle.

[0011] Furthermore, the elastic reset component is a tension spring, with hooks at both ends of the tension spring, a raised first pry bar on the mounting plate, a raised second pry bar on the movable locking component, and hooks at both ends of the tension spring onto the first and second pry bars respectively.

[0012] Furthermore, the limiting structure is a bent plate that is bent and warped on the mounting plate.

[0013] Furthermore, the movable contact structure is provided with at least two mounting rods, the mounting plate is provided with sleeve holes for fitting the mounting rods, and the mounting rods are threaded with fastening nuts to fix the mounting plate.

[0014] Furthermore, a spacer is fitted onto the mounting rod, and the mounting plate is sandwiched between the spacer and the fastening nut.

[0015] This utility model also provides a disconnecting switch, including: a locking device for closing a vertically opening disconnecting switch; a switch body, wherein the switch body is provided with a first column and a second column arranged at intervals, the moving contact structure has a closed state and an open state, and the moving contact structure in the closed state is in contact with the stationary contact; the moving contact structure is hinged to the upper end of the first column; and a stationary contact is provided at the upper end of the second column, the stationary contact being provided with a locking hole.

[0016] This utility model has the following beneficial effects:

[0017] The movable locking component adopts a movable installation method, which can flexibly switch between the locked state and the avoidance state. When unlocking is required, simply apply an external force to the movable locking component to overcome the force of the elastic reset component, and it will switch from the locked state embedded in the locking hole of the stationary contact to the avoidance state. This eliminates the cumbersome unlocking process and inconvenient operation of traditional locking devices, making operation convenient and significantly improving the efficiency of equipment operation and maintenance. By fixing a limit structure on the mounting plate, when the movable locking component is in the locked state, the limit structure abuts against the movable locking component, which can strictly limit the excessive displacement of the movable locking component and avoid the loss of control of the locking component's range of motion. The limit structure and the elastic reset component keep the movable locking component stably in the locked state. The elastic reset component can continuously apply an elastic force to the movable locking component, so that the movable locking component will not easily disengage from the locked state, ensuring the positional stability of the movable locking component in the locked state. This further ensures the reliability of the closing connection between the moving contact structure and the stationary contact, and reduces the risk of accidents such as arc discharge and equipment overheating caused by locking failure.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the disconnect switch of this utility model;

[0021] Figure 2 yes Figure 1 Enlarged view of point A;

[0022] Figure 3 This is a schematic diagram of the movable locking component in the avoidance state;

[0023] Figure 4 This is a schematic diagram of the exploded state structure of the movable locking component;

[0024] Figure 5 This is a partial structural diagram of the locking device;

[0025] Figure 6 This is a structural schematic diagram of the movable locking component from another perspective.

[0026] Legend:

[0027] Moving contact structure 100, mounting plate 110, clearance hole 111, first pry bar 112, sleeve hole 113, mounting rod 120, fastening nut 121, spacer 130;

[0028] Movable locking component 200, movable plate 210, arc notch 211, limit hook 220, connecting arm 221, hook part 222, hook groove 223, second lifting piece 230;

[0029] 300 elastic reset component, 310 pull hook;

[0030] Limiting structure 400;

[0031] Switch body 500, first column 510, second column 520;

[0032] 600 stationary contact, 610 locking hole, 620 vertical plate. Detailed Implementation

[0033] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0037] Please refer to Figure 1 and Figure 2A preferred embodiment of the present invention provides a locking device for closing a vertically opening disconnect switch, comprising a moving contact structure 100, a movable locking element 200, an elastic reset element 300, and a limiting structure 400.

[0038] A mounting plate 110 is fixedly mounted on the moving contact structure 100.

[0039] The movable locking component 200 has a locked state and an avoidance state. The movable locking component 200 is movably installed on the mounting plate 110 to realize the switching between the locked state and the avoidance state. The movable locking component 200 has a locking structure. The locking structure in the locked state is used to embed into the locking hole 610 on the stationary contact 600 in the closed state, thereby locking the moving contact structure 100 and the stationary contact 600 in the closed state, so that the two maintain a stable connection.

[0040] One end of the elastic reset member 300 is connected to the mounting plate 110, and the other end is connected to the movable locking member 200. It is used to apply an elastic force to the movable locking member 200 in the avoidance state so that it moves toward the locked state.

[0041] The limiting structure 400 is fixedly installed on the mounting plate 110 and is used to abut against the movable locking member 200 in the locked state to limit the range of motion of the movable locking member 200.

[0042] This utility model provides a locking device for closing a vertically opening disconnect switch. The movable locking member 200 is movably installed and can flexibly switch between a locked state and a yielding state. When unlocking is required, an external force is applied to the movable locking member 200 to overcome the force of the elastic reset member 300, which switches it from the locked state embedded in the locking hole 610 of the stationary contact 600 to the yielding state. This eliminates the problems of cumbersome unlocking process and inconvenient operation of traditional locking devices, and greatly improves the efficiency of equipment operation and maintenance. By fixing a limiting structure 400 on the mounting plate 110, when the movable locking member 200 is in the locked state, the limiting structure 400 abuts against the movable locking member 200, which can strictly limit the excessive displacement of the movable locking member 200 and avoid loss of control due to the movement range of the locking member. The limiting structure 400 and the elastic reset member 300 keep the movable locking member 200 stably in the locked state. The elastic reset member 300 can continuously apply an elastic force to the movable locking member 200, so that the movable locking member 200 will not easily disengage from the locked state. This ensures the positional stability of the movable locking member 200 in the locked state, further guarantees the reliability of the closing connection between the moving contact structure 100 and the stationary contact 600, and reduces the risk of accidents such as arc discharge and equipment overheating caused by locking failure.

[0043] Reference Figures 2 to 4In some embodiments of this utility model, the movable locking member 200 includes a movable plate 210, and the locking structure is a limiting hook 220 connected to the movable plate 210. The movable plate 210 is rotatably mounted on the mounting plate 110. Specifically, the movable plate 210 and the mounting plate 110 are provided with corresponding holes to achieve hinge connection through a hinge shaft. In the locked state, one end of the movable plate 210 is hinged to the mounting plate 110, and the other end abuts against the limiting structure 400. The rotational movement facilitates the rotation of the movable locking element 200. During the closing process of the moving contact structure 100, the limit hook 220 first contacts the stationary contact 600. As the moving contact structure 100 continues to rotate towards the closing state, the limit hook 220 can passively rotate towards the avoidance state until the moving contact structure 100 reaches the closing state. At this time, the limit hook 220 corresponds to the locking hole 610, so that the limit hook 220 returns to the locked state under the action of the elastic reset element 300. The limit hook 220 is partially embedded in the locking hole 610 to achieve locking. The hook-shaped design of the limit hook 220 can form a mechanical engagement with the locking hole 610 of the stationary contact 600, enhancing the stability of the locked state.

[0044] Reference Figures 3 to 5 In a further embodiment of this utility model, the limiting hook 220 includes a connecting arm 221 and a hook portion 222. The hook portion 222 is connected to the end of the connecting arm 221 away from the movable plate 210 and protrudes from the side of the connecting arm 221. The connecting arm 221 provides a reasonable lever arm length for the hook portion 222, ensuring that the force of the elastic reset member 300 can be efficiently converted into the embedding force of the hook portion 222; the hook portion 222 protrudes from the side of the connecting arm 221 so that it is embedded in the locking hole 610, ensuring the locking effect.

[0045] Reference Figures 4 to 6 In a further embodiment of this utility model, the mounting plate 110 is provided with a clearance hole 111, and the movable plate 210 has an arc notch 211 on its edge. In the locked state, the edge of the arc notch 211 on the movable plate 210 protrudes beyond the edge of the clearance hole 111, and in the clearance state, the edge of the arc notch 211 on the movable plate 210 is tangent to the edge of the clearance hole 111. This is achieved by providing a clearance hole 111 on the mounting plate 110 and designing an arc notch 211 on the edge of the movable plate 210. In the locked state, the edge of the arc notch 211 protrudes beyond the edge of the clearance hole 111, allowing for quick visual confirmation of whether the device is in a valid locked state, facilitating maintenance personnel's judgment. When switching to the clearance state, simply insert a cylindrical object or finger into the clearance hole 111 and push it against the arc notch 211 until the cylindrical object or finger contacts the edge of the clearance hole 111. At this point, the edge of the arc notch 211 is tangent to the edge of the clearance hole 111, thus switching the movable locking component 200 to the clearance state. This facilitates determining whether the specified state has been reached during state switching and also avoids component interference or overload of the elastic reset component 300 due to excessive rotation during unlocking operations.

[0046] Reference Figures 4 to 6 In a further embodiment of this utility model, the hook portion 222 and the connecting arm 221 form a hook groove 223 with an acute angle. The acute angle hook groove 223 improves the engagement stability between the limiting hook 220 and the locking hole 610. Moreover, the acute angle structure causes the hook portion 222 to form a wedge-shaped self-locking effect after being inserted into the locking hole 610. When the movable locking member 200 is not switched to the avoidance state, the greater the external force on the moving contact structure 100, the tighter the engagement between the limiting hook 220 and the locking hole 610, effectively resisting the tendency of the stationary contact 600 and the moving contact structure 100 to move away from each other. Understandably, in order for the moving contact structure 100 to rotate and achieve closing, the hook 222 contacts the stationary contact 600 and can rotate smoothly to bypass the structure of the locking hole 610 and engage in the locking hole 610. The edge of the hook 222 facing away from the hook groove 223 is arc-shaped. When the moving contact structure 100 is in the open state, the moving locking member 200 is stably kept in the locked state due to the action of the limiting structure 400 and the elastic reset member 300. When the moving locking member 200 in the locked state moves towards the closed state with the moving contact structure 100, the arc-shaped edge of the hook 222 will contact the stationary contact 600, causing the stationary contact 600 to move relative to the arc-shaped edge of the hook 222 until the hook 222 bypasses part of the structure and engages in the locking hole 610.

[0047] Reference Figure 5 In a further embodiment of this utility model, the elastic reset member 300 is a tension spring, with hooks 310 at both ends. The mounting plate 110 has a raised first pry bar 112, and the movable locking member 200 has a raised second pry bar 230. The hooks 310 at both ends of the tension spring hook onto the first pry bar 112 and the second pry bar 230, respectively. The first pry bar 112 is integrally formed with the mounting plate 110 for ease of manufacturing, and the first pry bar 112 is a structure that is stamped and raised on the mounting plate 110. The second pry bar 230 is specifically located on the movable plate 210 and integrally formed with the movable plate 210. The hook-and-hook structure of the hooks 310 and the pry bars facilitates installation and disassembly.

[0048] Reference Figure 4 and Figure 5 In a further embodiment of this utility model, the limiting structure 400 is a bent plate that is bent and raised on the mounting plate 110. The bent plate and the mounting plate 110 are integrally formed without the need for additional connecting parts, and the connection between the bent plate and the mounting plate 110 is also stable.

[0049] Reference Figure 3 and Figure 4In a further embodiment of this utility model, the movable contact structure 100 is provided with at least two mounting rods 120, and the mounting plate 110 is provided with sleeve holes 113 for fitting the mounting rods 120. A fastening nut 121 is threaded onto the mounting rods 120 to fix the mounting plate 110. The mounting plate 110 is positioned by the cooperation of at least two mounting rods 120 with the sleeve holes 113, and the fastening nut 121 is used to lock it in place, ensuring the firmness of the connection between the mounting plate 110 and the movable contact structure 100. Specifically, the mounting rod 120 is a screw rod, with a screw head at one end. The screw head abuts against the movable contact structure 100, thereby clamping and fixing the mounting plate 110 and the movable contact structure 100 together through the screw head and the fastening nut 121.

[0050] Reference Figure 3 and Figure 4 In a further embodiment of this utility model, a spacer 130 is sleeved on the mounting rod 120, and the mounting plate 110 is clamped between the spacer 130 and the fastening nut 121. The length of the spacer 130 can control the axial position of the mounting plate 110. The axial fixed position of the mounting plate 110 can be adjusted by replacing spacers 130 of different lengths, thereby ensuring that the movable locking member 200 is aligned with the locking hole 610 of the stationary contact 600.

[0051] Reference Figure 1 This utility model also provides a disconnecting switch, including a locking device for closing a vertically opening disconnecting switch, a switch body 500, and a stationary contact 600. The switch body 500 has a first column 510 and a second column 520 spaced apart. The moving contact structure 100 has a closed state and an open state. In the closed state, the moving contact structure 100 contacts the stationary contact 600. The moving contact structure 100 is hinged to the upper end of the first column 510 to achieve switching between the closed and open states. The stationary contact 600 is located at the upper end of the second column 520 and has a locking hole 610. Specifically, the moving contact structure 100 includes two spaced-apart moving contact plates. The stationary contact 600 has a vertical plate 620 that can be inserted between the two moving contact plates and contact them in the closed state. The locking hole 610 is located on the vertical plate 620.

[0052] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A locking device for closing a vertically opening disconnect switch, characterized in that, include: A movable contact structure (100) on which an mounting plate (110) is fixedly mounted; The movable locking member (200) has a locked state and a yielding state. The movable locking member (200) is movably installed on the mounting plate (110) to realize the switching between the locked state and the yielding state. The movable locking member (200) has a locking structure. The locking structure in the locked state is used to embed into the locking hole (610) on the stationary contact (600) in the closed state. The elastic reset member (300) is connected at one end to the mounting plate (110) and at the other end to the movable locking member (200), and is used to apply an elastic force to the movable locking member (200) in the avoidance state toward the locking state. A limiting structure (400) is fixedly installed on the mounting plate (110) to abut against the movable locking member (200) in the locked state, thereby limiting the range of motion of the movable locking member (200).

2. The locking device for closing the vertical disconnect switch according to claim 1, characterized in that, The movable locking component (200) includes a movable plate (210), and the locking structure is a limiting hook (220) connected to the movable plate (210). The movable plate (210) is rotatably mounted on the mounting plate (110).

3. The locking device for closing the vertically opening disconnect switch according to claim 2, characterized in that, The limiting hook (220) includes a connecting arm (221) and a hook portion (222), wherein the hook portion (222) is connected to the end of the connecting arm (221) away from the movable plate (210) and protrudes from the side of the connecting arm (221).

4. The locking device for closing the vertically opening disconnector according to claim 2, characterized in that, The mounting plate (110) is provided with a clearance hole (111), and the edge of the movable plate (210) is provided with an arc notch (211). In the locked state, the edge of the arc notch (211) on the movable plate (210) protrudes from the edge of the clearance hole (111), and in the clearance state, the edge of the arc notch (211) on the movable plate (210) is tangent to the edge of the clearance hole (111).

5. The locking device for closing the vertical disconnect switch according to claim 3, characterized in that, The hook (222) and the connecting arm (221) form a hook groove (223) with an acute angle.

6. The locking device for closing the vertically opening disconnector according to claim 1, characterized in that, The elastic reset component (300) is a tension spring, and hooks (310) are provided at both ends of the tension spring. The mounting plate (110) is provided with a raised first pry bar (112), and the movable locking component (200) is provided with a raised second pry bar (230). The hooks (310) at both ends of the tension spring are hooked onto the first pry bar (112) and the second pry bar (230) respectively.

7. The locking device for closing the vertical disconnect switch according to claim 1, characterized in that, The limiting structure (400) is a bent plate that is bent and raised on the mounting plate (110).

8. The locking device for closing the vertical disconnect switch according to claim 1, characterized in that, The moving contact structure (100) is provided with at least two mounting rods (120), the mounting plate (110) is provided with a sleeve hole (113) for fitting the mounting rod (120), and a fastening nut (121) is threaded onto the mounting rod (120) to fix the mounting plate (110).

9. The locking device for closing the vertically opening disconnector according to claim 8, characterized in that, A spacer (130) is fitted on the mounting rod (120), and the mounting plate (110) is sandwiched between the spacer (130) and the fastening nut (121).

10. A disconnecting switch, characterized in that, include: Locking device for closing the vertical disconnect switch as described in any one of claims 1 to 9; A switch body (500) is provided with a first column (510) and a second column (520) spaced apart. The moving contact structure (100) has a closed state and an open state. In the closed state, the moving contact structure (100) is in contact with the stationary contact (600). The moving contact structure (100) is hinged to the upper end of the first column (510). A stationary contact (600) is located at the upper end of the second column (520), and the stationary contact (600) is provided with a locking hole (610).

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