Isolation position interlocking structure for direct-acting three-position isolating switch

Abstract

The utility model relates to a direct-acting three-position isolator isolation position interlocking structure, including the casing, the grounding operation axle drives the screw rod nut to move back and forth in the front -back direction, the door lock board, its left and right movement is done in the casing front side, the grounding lever, its rotation setting is done in the casing rear end, its one end sets the jack, its other end sets the grounding baffle lever, the grounding lever front end passes through the casing and stretches out from the casing front end, reset spring is arranged between the grounding baffle lever and the grounding lever. When the isolator is isolated, the screw rod nut moves back, drives the grounding lever to rotate through the jack, thereby drives the grounding baffle lever to stretch out forward, the grounding baffle lever front end stops the door lock board to move right, namely limits the grounding operation hole of switch to open, avoids the grounding operation of isolator to do.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment, specifically to an isolation position interlocking structure for a direct-acting three-position disconnect switch. Background Technology

[0002] With the development of the domestic power market and the increase in application scenarios, C-GIS circuit breaker cabinets are being used more and more widely. The technical requirements for the three-position disconnect switches configured on them, especially the direct-acting three-position disconnect switches, are also increasing, and the reliability requirements are also getting higher and higher. Three-position refers to three positions, namely the closing position, the opening position, and the connection position.

[0003] Currently, dual-hole operated three-position disconnect switches on the market have internal grounding and isolation operating shafts. A door lock plate is located on the front of the switch. Moving the door lock plate left or right opens the grounding and isolation operating holes. Once the corresponding operating hole is open, the operating handle can be inserted to perform the corresponding grounding or isolation operation. When the disconnect switch is in the isolation closed state, for safety reasons, it is necessary to restrict the door lock plate from opening the grounding operating hole to prevent the disconnect switch from performing grounding operations.

[0004] Currently, when the disconnector is in the closed state, the interlocking structure of the door lock plate is relatively complex and not stable or reliable enough. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an isolation position interlocking structure for a direct-acting three-position disconnecting switch, thereby solving the technical problems of complex and unstable interlocking structure of the door lock plate when the disconnecting switch is closed.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A direct-acting three-position disconnecting switch isolation position interlocking structure is provided, including: The housing contains a grounding operating shaft, an isolation operating shaft, and a lead screw nut. The lead screw nut is sleeved on the two operating shafts. The grounding operating shaft is a lead screw, and the isolation operating shaft is a smooth rod. The grounding operating shaft drives the lead screw nut to reciprocate in the front-back direction. The door lock plate moves left and right on the front side of the housing. When the door lock plate is in the middle position, it blocks the grounding operation hole and the isolation operation hole on the switch panel. When the door lock plate moves to the right position, the grounding operation hole is opened. When the door lock plate moves to the left position, the isolation operation hole is opened. A grounding lever is rotatably mounted at the rear end of the housing. One end of the lever is equipped with a push rod, and the other end is equipped with a grounding stop rod. The front end of the grounding lever passes through the housing and extends out from the front end of the housing. A return spring is provided between the grounding stop rod and the grounding lever. When the disconnecting switch is in the disconnecting position, the lead screw nut moves backward and pushes the push rod to extend backward. The push rod drives the grounding lever to rotate, and at the same time drives the grounding stop to extend forward. At this time, the grounding stop blocks the door lock plate from moving to the right. When the lead screw nut leaves the rear position, the grounding stop retracts and resets, and the door lock plate is unlocked.

[0007] Furthermore, the push rod is a bolted component, which passes through the grounding lever and extends into the housing, with a threaded connection between the push rod and the grounding lever.

[0008] Furthermore, a locking nut is provided on the top rod.

[0009] Furthermore, a reset spring is sleeved on the grounding stop, with one end of the reset spring abutting against the housing and the other end abutting against the grounding lever.

[0010] Furthermore, a pair of isolation auxiliary switches are installed on the side of the housing, and a switch lever is provided on the rear side of the housing. One end of the switch lever is provided with a lead screw nut for contact, and the other end is abutted against the switch button of the isolation auxiliary switch.

[0011] The beneficial effects of this utility model are: When the disconnecting switch is in isolation, the lead screw nut moves backward, which drives the grounding lever to rotate through the push rod. This causes the grounding stop to extend forward, and the front end of the grounding stop blocks the door lock plate from moving to the right, thus restricting the opening of the grounding operation hole of the switch and preventing the disconnecting switch from performing grounding operations.

[0012] This interlocking structure makes full use of the movement of the lead screw and nut to drive the grounding stop, and uses a spring to reset it. The whole structure is simple, stable and reliable. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 and Figure 2 This is a schematic diagram of the interlocking structure for a direct-acting three-position disconnector; Figure 3 and Figure 4 This is a schematic diagram of a chain structure; Figure 5 This is a schematic diagram of a direct-acting three-position disconnect switch; 1. Housing; 11. Grounding operating shaft; 12. Isolation operating shaft; 13. Lead screw nut; 2. Door lock plate; 21. Door hole; 3. Grounding lever; 31. Top rod; 32. Grounding stop bar; 33. Return spring; 34. Locking nut; 4. Switch lever; 41. Adjusting bolt; 42. Isolation auxiliary switch; 5. Switch panel, 51. Grounding operation hole, 52. Isolation operation hole. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] This application provides an isolation position interlocking structure for a direct-acting three-position disconnecting switch, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, in the following embodiments, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0017] To address the technical problems of complex and unstable interlocking structures of the door lock plate 2 during disconnection closing in existing technologies, an embodiment of this application provides an isolation position interlocking structure for a direct-acting three-position disconnection switch. This is described in detail below.

[0018] like Figures 1 to 5 As shown, an isolating position interlocking structure for a direct-acting three-position disconnecting switch includes... The housing 1 contains a grounding operating shaft 11, an isolation operating shaft 12, and a lead screw nut 13. The lead screw nut 13 is sleeved on the two operating shafts. The grounding operating shaft 11 is a lead screw, and the isolation operating shaft 12 is a smooth rod. The grounding operating shaft 11 drives the lead screw nut 13 to reciprocate in the front-back direction. The door lock plate 2 moves left and right on the front side of the housing 1. When the door lock plate 2 is in the middle position, the door lock plate 2 blocks the grounding operation hole 51 and the isolation operation hole 52 on the switch panel 5. When the door lock plate 2 moves to the right position, the grounding operation hole 51 is opened. When the door lock plate 2 moves to the left position, the isolation operation hole 52 is opened. The grounding lever 3 is rotatably mounted at the rear end of the housing 1. One end of the lever is provided with a top rod 31, and the other end is provided with a grounding stop rod 32. The front end of the grounding lever 3 passes through the housing 1 and extends out from the front end of the housing 1. A return spring 33 is provided between the grounding stop rod 32 and the grounding lever 3. When the disconnecting switch is in the disconnecting position, the lead screw nut 13 moves backward and pushes the top rod 31 to extend backward. The top rod 31 drives the grounding lever 3 to rotate, and at the same time drives the grounding stop rod 32 to extend forward. At this time, the grounding stop rod 32 blocks the door lock plate 2 from moving to the right. When the lead screw nut 13 leaves the rear position, the grounding stop rod 32 retracts backward to reset, and the door lock plate 2 is unlocked.

[0019] The rotation of the grounding operating shaft 11 directly drives the lead screw nut 13 to move back and forth. The isolation operating shaft 12 drives the grounding operating shaft 11 to rotate through the synchronous gear, thereby indirectly driving the lead screw nut 13 to move.

[0020] The disconnecting switch is equipped with a motor, which drives the grounding operating shaft 11 to rotate through gears, so that the disconnecting switch can perform isolation, grounding and opening in electric mode.

[0021] Specifically, as an optional implementation method in this embodiment, such as Figure 1 As shown, a door hole 21 is provided in the middle of the door lock plate. When the door lock plate is moved to the right side, the door hole 21 is connected to the grounding operation hole 51 and the grounding operation shaft 11. When the door lock plate is moved to the left side, the door hole 21 is connected to the isolation operation shaft and the isolation operation hole 52.

[0022] Specifically, as an optional implementation method in this embodiment, such as Figure 3 and Figure 4 As shown, the top rod 31 is a bolted component. The top rod 31 passes through the grounding lever 3 and extends into the housing 1. The top rod 31 and the grounding lever 3 are threaded together.

[0023] The top rod 31 is made of bolts, which are easy to obtain. By rotating the top rod 31, its position on the grounding lever 3 can be adjusted, thereby adjusting the rotation angle of the grounding lever 3 and ultimately controlling the length of the front end of the grounding stop rod 32.

[0024] Specifically, as an optional implementation method in this embodiment, such as Figure 3 and Figure 4 As shown, a locking nut 34 is provided on the push rod 31. By tightening the locking nut 34, the rotation of the push rod 31 on the ground lever 3 can be restricted, thereby locking the push rod 31 onto the ground lever 3.

[0025] Specifically, as an optional implementation method in this embodiment, such as Figure 4 As shown, a reset spring 33 is sleeved on the grounding stop 32. One end of the reset spring 33 abuts against the housing 1, and the other end abuts against the grounding lever 3.

[0026] The rear end of the grounding stop 32 is fixedly connected to the grounding lever 3. The return spring 33 pushes the grounding lever 3 backward, thereby driving the grounding lever 3 to return to its original position.

[0027] When the disconnecting switch performs its isolation action, the grounding screw drives the screw nut 13 to move backward, thereby causing the screw nut 13 to abut against the top rod 31. The top rod 31 drives the grounding lever 3 to rotate, which in turn causes the grounding stop rod 32 to extend, thereby restricting the door lock plate 2 from moving to the right and preventing the grounding operation hole 51 from opening.

[0028] Specifically, as an optional implementation method in this embodiment, such as Figure 2 As shown, a pair of isolation auxiliary switches 42 are installed on the side of the housing 1, and a switch lever 4 is provided on the rear side of the housing 1. One end of the switch lever 4 is provided with a lead screw nut 13 for abutting, and the other end abuts against the switch button of the isolation auxiliary switch 42.

[0029] In one embodiment, an adjusting bolt 41 is provided at one end of the switch lever 4. The adjusting bolt 41 abuts against the lead screw nut 13, and the other end of the switch lever 4 triggers the isolation auxiliary switch 42. Thus, when the lead screw nut 13 reaches the rear position and enters the isolation state in electric mode, the isolation auxiliary switch 42 is triggered, thereby cutting off the motor power supply.

[0030] In the isolation position interlocking structure of this utility model, the grounding stop bar 32 runs through the entire housing 1. The movement of the lead screw nut 13 drives the grounding lever 3 and the switch lever 4 simultaneously. When the isolating switch is in isolation, the grounding stop bar 32 extends to lock the door lock plate 2, and at the same time triggers the isolation auxiliary switch 42 to cut off the power to the motor.

[0031] The isolation position interlocking structure is realized by the lead screw nut 13, the grounding lever 3, and the grounding stop 32. It is simple and reliable.

[0032] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0033] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0036] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0037] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An isolating position interlocking structure for a direct-acting three-position disconnecting switch, characterized in that, include The housing contains a grounding operating shaft, an isolation operating shaft, and a lead screw nut. The lead screw nut is sleeved on the two operating shafts. The grounding operating shaft is a lead screw, and the isolation operating shaft is a smooth rod. The grounding operating shaft drives the lead screw nut to reciprocate in the front-back direction. The door lock plate moves left and right on the front side of the housing. When the door lock plate is in the middle position, it blocks the grounding operation hole and the isolation operation hole on the switch panel. When the door lock plate moves to the right position, the grounding operation hole is opened. When the door lock plate moves to the left position, the isolation operation hole is opened. A grounding lever is rotatably mounted at the rear end of the housing. One end of the lever is equipped with a push rod, and the other end is equipped with a grounding stop rod. The front end of the grounding lever passes through the housing and extends out from the front end of the housing. A return spring is provided between the grounding stop rod and the grounding lever. When the disconnecting switch is in the disconnecting position, the lead screw nut moves backward and pushes the push rod to extend backward. The push rod drives the grounding lever to rotate, and at the same time drives the grounding stop to extend forward. At this time, the grounding stop blocks the door lock plate from moving to the right. When the lead screw nut leaves the rear position, the grounding stop retracts and resets, and the door lock plate is unlocked.

2. The isolation position interlocking structure for a direct-acting three-position disconnector according to claim 1, characterized in that, The top rod is a bolted component. The top rod passes through the grounding lever and extends into the housing. The top rod and the grounding lever are threaded together.

3. The isolation position interlocking structure for a direct-acting three-position disconnector according to claim 2, characterized in that, A locking nut is installed on the top rod.

4. The isolation position interlocking structure for a direct-acting three-position disconnector according to claim 1, characterized in that, A reset spring is sleeved on the grounding stop, with one end of the reset spring abutting against the housing and the other end abutting against the grounding lever.

5. The isolation position interlocking structure for a direct-acting three-position disconnector according to claim 1, characterized in that, A pair of isolation auxiliary switches are installed on the side of the housing, and a switch lever is provided on the rear side of the housing. One end of the switch lever is provided with a lead screw nut for contact, and the other end is abutted against the switch button of the isolation auxiliary switch.

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