Isolating switch operating mechanism and switching device

Abstract

The utility model provides an isolating switch operating mechanism and a switching device, and relates to the technical field of isolating switches. The isolating switch operating mechanism comprises a shell, a mounting main body, a rocker arm and an operating assembly. The installation main body is arranged in the housing and is used for installing the isolation switch. The rocker arm is rotationally connected with the rotating shaft; the rocker arm is provided with a kidney-shaped hole spaced from the rotating shaft. The operation assembly is rotatably connected to the shell and is provided with a transmission part, and the transmission part extends into the kidney-shaped hole and is in transmission connection with the rocker arm; the operation assembly is used for equivalently rotating the shell to drive the rotating shaft to rotate through the rocker arm to realize closing or opening. The switch device provided by the utility model adopts the isolating switch operating mechanism. The disconnecting switch operating mechanism and the switching device provided by the utility model can improve the problems that the disconnecting switch suitable for the high-voltage frequency converter is high in installation difficulty and even cannot be installed or the action of the disconnecting switch cannot be completed after the disconnecting switch is installed in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, and more specifically, to a disconnecting switch operating mechanism and a switching device. Background Technology

[0002] Most models of mining frequency converters have an internal isolating switch to enable the start-stop and protection functions of the entire machine. A handle or other manual operating mechanism is added to the outside of the equipment to operate the isolating switch.

[0003] However, in existing technologies, for high-voltage isolation frequency converters of 3300V and above, the insulation requirements are more stringent because high-voltage disconnect switches are applicable to high-voltage environments, resulting in a heavier switch and difficult installation. Installation errors may prevent installation altogether. Even if an operational margin is allowed to account for installation errors, the manual operating mechanism may wobble, preventing the disconnect switch from operating. Utility Model Content

[0004] The technical problem solved by this utility model is how to improve the problem in the prior art that the installation of disconnecting switches adapted to high voltage frequency converters is difficult, or even impossible, or the disconnecting switch cannot be operated after installation.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] This utility model provides an operating mechanism for a disconnecting switch, used to operate the disconnecting switch to close or open. The disconnecting switch has a rotating shaft for performing closing or opening. The operating mechanism for the disconnecting switch includes:

[0007] shell;

[0008] The mounting body, located inside the housing, is used to install the disconnect switch;

[0009] A rocker arm is used for rotatably connecting to the rotating shaft; the rocker arm has an oblong hole spaced apart from the rotating shaft;

[0010] An operating component is rotatably connected to the housing and has a transmission part that extends into the oblong hole and is connected to the rocker arm in a transmission manner; the operating component is used to achieve closing or opening of the circuit by rotating the rotating shaft through the rocker arm, which is equivalent to rotating the housing.

[0011] The advantages of the disconnector operating mechanism provided by this utility model compared to the prior art include:

[0012] During installation and assembly, this disconnector operating mechanism achieves power transmission between the operating components and the disconnector through the cooperation of the rocker arm and the transmission unit. The rocker arm has a slotted hole, which allows for space allowance during the assembly of the transmission unit and the rocker arm, eliminating the impact of installation errors in the operating components. This reduces the assembly difficulty between the operating components and the disconnector, improving assembly efficiency. Furthermore, it ensures that after assembly, the rocker arm's transmission enables the disconnector to perform closing and opening actions. Therefore, the disconnector operating mechanism provided by this invention addresses the problems in existing technologies where disconnectors adapted to high-voltage frequency converters are difficult to install, or even impossible to install, or unable to perform disconnector actions after installation.

[0013] Optionally, the transmission part is cylindrical, and the width of the waist-shaped hole is greater than the diameter of the transmission part.

[0014] Optionally, the transmission part abuts against one of the inner sidewalls in the width direction of the waist-shaped hole.

[0015] Optionally, the operating component includes an operating handle and a turntable; a connecting part is provided at the center of one side of the turntable in the thickness direction, and the transmission part is eccentrically disposed on the other side of the turntable in the thickness direction; the turntable is disposed inside the housing, and the connecting part passes through the housing and is connected to the operating handle outside the housing in a transmission connection.

[0016] Optionally, the operating component further includes a fixing seat, which is fixedly disposed inside the housing, and the fixing seat has a protruding limiting portion.

[0017] The turntable is provided with an arc-shaped groove, and the limiting part is provided in the arc-shaped groove; when the disconnecting switch is in the closed position or the open position, the limiting part abuts against one end of the arc-shaped groove.

[0018] Optionally, the two ends of the arc-shaped groove form a first line and a second line with the center of the turntable, respectively, and the center of the transmission part forms a third line with the center of the turntable. The first line and the third line form an obtuse angle, and the second line and the third line form an acute angle.

[0019] Optionally, the operating component further includes a pad disposed between the turntable and the housing, the thickness of the pad being greater than the thickness of the fixed base, so as to form a gap between the turntable and the fixed base.

[0020] Optionally, a slot is provided on the end face of the rotating shaft; the rocker arm is also provided with an assembly part, the assembly part has an installation groove, and the bottom wall of the installation groove is provided with a locking block; the rotating shaft extends into the installation groove, and the locking block cooperates with the slot.

[0021] Optionally, the rotating shaft is clearance-fitted with the mounting groove, and the locking block is clearance-fitted with the locking groove.

[0022] A switching device includes a disconnecting switch and the aforementioned disconnecting switch operating mechanism, wherein the disconnecting switch is mounted on the mounting body, and the rocker arm is drivenly connected to the rotating shaft.

[0023] The switching device provided by this utility model adopts the above-mentioned disconnecting switch operating mechanism. The beneficial effects of this switching device compared with the prior art are the same as the beneficial effects of the disconnecting switch operating mechanism provided above compared with the prior art, and will not be repeated here. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the switching device provided in the embodiments of this application;

[0026] Figure 2 This is an exploded structural diagram of the switching device provided in the embodiments of this application;

[0027] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0028] Figure 4 This is one of the structural schematic diagrams of the rocker arm provided in the embodiments of this application;

[0029] Figure 5 This is the second schematic diagram of the rocker arm provided in the embodiments of this application;

[0030] Figure 6 This is one of the structural schematic diagrams of the turntable provided in the embodiments of this application;

[0031] Figure 7 This is the second schematic diagram of the turntable provided in the embodiments of this application.

[0032] Icons: Switching device 10, disconnecting switch 11, rotating shaft 111, slot 112, disconnecting switch operating mechanism 12, housing 100, mounting body 200, rocker arm 300, oblong hole 301, assembly part 310, mounting groove 311, locking block 312, operating component 400, transmission part 401, operating handle 410, turntable 420, connecting part 421, arc groove 422, fixing seat 430, limiting part 431, pad 440. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they 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.

[0037] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0038] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0039] Please see Figure 1This application provides a disconnector switch operating mechanism 12 and a switching device 10 employing the disconnector switch operating mechanism 12. The disconnector switch operating mechanism 12 is connected to a disconnector switch 11, allowing operation and control of the disconnector switch 11 to perform actions such as closing or opening. In this embodiment, the disconnector switch operating mechanism 12 and the switching device 10 can improve upon the problems in the prior art where the installation of the disconnector switch 11 adapted to high-voltage frequency converters is difficult, or even impossible, or the disconnector switch 11 cannot operate after installation.

[0040] In this embodiment, please refer to the following: Figures 2 to 6 The disconnector switch 11 has a rotating shaft 111 for performing closing or opening actions. When the rotating shaft 111 rotates, the disconnector switch 11 can perform closing or opening actions. The disconnector switch operating mechanism 12 includes a housing 100, a mounting body 200, a rocker arm 300, and an operating component 400. The mounting body 200 is located inside the housing 100 and is used to mount the disconnector switch 11. The rocker arm 300 is rotatably connected to the rotating shaft 111; the rocker arm 300 has an oblong hole 301 spaced from the rotating shaft 111. The operating component 400 is rotatably connected to the housing 100 and has a transmission part 401 that extends into the oblong hole 301 and is drively connected to the rocker arm 300; the operating component 400 is used to achieve closing or opening by rotating the rotating shaft 111 through the rocker arm 300, which is equivalent to rotating the housing 100.

[0041] When the disconnector switch 11 is operated by the disconnector switch operating mechanism 12, the operator can apply force to the operating component 400, and then transmit the power to the rocker arm 300 through the transmission part 401 of the operating component 400. Then, the rocker arm 300 drives the rotating shaft 111 to rotate, thereby realizing the closing or opening action of the disconnector switch 11.

[0042] As described above, during the installation and assembly of the disconnector switch operating mechanism 12, the power transmission between the operating component 400 and the disconnector switch 11 can be achieved through the cooperation of the rocker arm 300 and the transmission part 401. The rocker arm 300 is provided with a slotted hole 301. During the assembly of the transmission part 401 and the rocker arm 300, the space allowance in the slotted hole 301 can eliminate the influence caused by installation errors of the operating component 400. On the one hand, this reduces the assembly difficulty between the operating component 400 and the disconnector switch 11 and improves assembly efficiency; on the other hand, it also ensures that after assembly, the disconnector switch 11 can complete the closing and opening actions through the transmission of the rocker arm 300. Based on this, the disconnector switch operating mechanism 12 provided by this utility model can improve the problem in the prior art where the installation of the disconnector switch 11 adapted to high-voltage frequency converters is difficult, or even impossible, or the disconnector switch 11 cannot be operated after installation.

[0043] It is worth noting that when the transmission part 401 and the waist-shaped hole 301 are engaged, the transmission part 401 can be assembled to different positions of the waist-shaped hole 301 based on the actual situation. Therefore, when different installation errors occur, the transmission part 401 can be assembled to different positions of the waist-shaped hole 301 to realize the transmission connection between the transmission part 401 and the rocker arm 300, thereby eliminating the error.

[0044] Furthermore, in this embodiment, the transmission part 401 is cylindrical, and the width of the oblong hole 301 is greater than the diameter of the transmission part 401. Based on this, the number of mounting positions in the oblong hole 301 that can be used to install the transmission part 401 can be increased, thereby eliminating large installation errors and ensuring a stable transmission connection between the transmission part 401 and the rocker arm 300.

[0045] Of course, in this embodiment, to ensure the sensitivity of the operating component 400 when operating the disconnector switch 11, the transmission part 401 abuts against one of the inner sidewalls in the width direction of the oblong hole 301. That is, when the operating component 400 is moved by force, it can synchronously drive the rocker arm 300 to rotate, and then synchronously drive the rotating shaft 111 to rotate, which is beneficial to the accurate and timely operation of the closing and opening actions of the disconnector switch 11. Correspondingly, if a gap is formed between the transmission part 401 and the inner wall of the oblong hole 301, it will cause the operating component 400 to spin freely in the initial stage of rotation, which may result in the disconnector switch 11 not being operated in place. Therefore, in this embodiment, it is preferable to abut the transmission part 401 against the inner wall of the oblong hole 301.

[0046] It is worth noting that when the transmission part 401 abuts against one of the inner walls of the oblong hole 301, it indicates that the transmission part 401 is spaced apart from the other opposing inner wall. Based on this, after the transmission part 401 rotates in sync with the operating component 400 to synchronously rotate the rocker arm 300 to complete a movement, when the operating component 400 rotates in the opposite direction, the rocker arm 300 can achieve the purpose of abutting against the transmission part 401 through its own gravity, thereby also achieving the purpose of synchronous rotation of the rocker arm 300 and the operating component 400. Therefore, in practical applications, the initial position of the rocker arm 300 can be set to its naturally hanging position.

[0047] In this embodiment, the operating component 400 includes an operating handle 410 and a turntable 420; a connecting part 421 is provided at the center of one side of the turntable 420 in the thickness direction, and a transmission part 401 is eccentrically disposed on the other side of the turntable 420 in the thickness direction; the turntable 420 is disposed inside the housing 100, and the connecting part 421 passes through the housing 100 and is connected to the operating handle 410 outside the housing 100 in a transmission connection.

[0048] When the operator rotates the operating handle 410, the power is transmitted through the turntable 420 to the transmission unit 401, which then transmits the power to the rocker arm 300, which in turn drives the rotating shaft 111 to rotate.

[0049] In this embodiment, the distance from the transmission part 401 on the rocker arm 300 to the rotating shaft 111 is L1, the rotation radius of the operating handle 410 is L2, and the required operating torque of the disconnect switch 11 is M. M can be equivalent to the product of F1 and L1, or it can be equivalent to the product of F2 and L2, i.e., M = F1 × L1 = F2 × L2; where F2 represents the force applied by the operator. It can be deduced that F2 = (F1 × L1) / L2. Based on this, the force applied by the operator can be adjusted by adjusting the ratio of L1 and L2.

[0050] Furthermore, the operating component 400 also includes a fixed base 430, which is fixedly disposed inside the housing 100, and a limiting part 431 is provided on the fixed base 430. The turntable 420 is provided with an arc-shaped groove 422, and the limiting part 431 is disposed in the arc-shaped groove 422; when the disconnecting switch 11 is in the closed or open position, the limiting part 431 abuts against one end of the arc-shaped groove 422. Through the cooperation of the limiting part 431 and the arc-shaped groove 422, the rotation stroke of the turntable 420 can be limited, preventing excessive rotation of the turntable 420 and thus excessive rotation of the rocker arm 300; simultaneously, the abutment between the limiting part 431 and the end of the arc-shaped groove 422 can be used to determine whether the operation is in place, facilitating operation.

[0051] In addition, in this embodiment, the two ends of the arc-shaped groove 422 form a first line and a second line with the center of the turntable 420, respectively, and the center of the transmission part 401 forms a third line with the center of the turntable 420. The first line and the third line form an obtuse angle, and the second line and the third line form an acute angle. The first line and the second line are located at... Figure 7 The middle lines are labeled B and C, while the third line is labeled D. From Figure 7 From a certain perspective, it can be seen that if the rocker arm 300 is set vertically and the waist-shaped hole 301 is set vertically, then on the turntable 420, the position of the transmission part 401 is slightly offset to the left relative to the vertical center line of the turntable 420. This makes it easier for the transmission part 401 to abut against the inner wall of the waist-shaped hole 301, ensuring assembly stability.

[0052] In this embodiment, the operating component 400 further includes a pad 440, which is disposed between the turntable 420 and the housing 100. The thickness of the pad 440 is greater than the thickness of the fixed base 430, so that a gap is formed between the turntable 420 and the fixed base 430. This avoids friction between the turntable 420 and the fixed base 430, thus preventing wear on the turntable 420 and avoiding the problem of increased operating difficulty caused by friction between the turntable 420 and the fixed base 430.

[0053] In this embodiment, a slot 112 is provided on the end face of the rotating shaft 111; the rocker arm 300 is also provided with an assembly part 310, which has a mounting groove 311, and a locking block 312 is provided on the bottom wall of the mounting groove 311; the rotating shaft 111 extends into the mounting groove 311, and the locking block 312 cooperates with the slot 112. Through the cooperation of the slot 112 and the locking block 312, the rocker arm 300 and the rotating shaft 111 can be stably coupled.

[0054] Furthermore, to improve assembly efficiency, the rotating shaft 111 is fitted with the mounting groove 311 with a clearance fit, and the retaining block 312 is fitted with the retaining groove 112 with a clearance fit. This clearance fit facilitates rapid assembly and also makes disassembly and maintenance easier.

[0055] Based on the aforementioned disconnector operating mechanism 12, the switching device 10 provided in this embodiment includes a disconnector 11 and the aforementioned disconnector operating mechanism 12. The connection relationship and technical effects between the disconnector 11 and the disconnector operating mechanism 12 are as described above and will not be repeated here.

[0056] In summary, the disconnector operating mechanism 12 and the switch device 10 provided in this embodiment can achieve power transmission between the operating component 400 and the disconnector 11 through the cooperation of the rocker arm 300 and the transmission part 401. The rocker arm 300 is provided with a slotted hole 301. During the assembly of the transmission part 401 and the rocker arm 300, the space allowance in the slotted hole 301 can eliminate the influence caused by installation errors of the operating component 400. On the one hand, this reduces the assembly difficulty between the operating component 400 and the disconnector 11 and improves assembly efficiency; on the other hand, it ensures that after assembly, the disconnector 11 can complete the closing and opening actions through the transmission of the rocker arm 300. Based on this, the disconnector operating mechanism 12 provided by this utility model can improve the problem in the prior art where the disconnector 11 adapted to high-voltage frequency converters is difficult to install, or even impossible to install, or cannot complete the operation of the disconnector 11 after installation. By setting the width of the oblong hole 301 to be greater than the diameter of the transmission part 401, the number of mounting positions for the transmission part 401 in the oblong hole 301 can be increased, thereby eliminating large installation errors and ensuring a stable transmission connection between the transmission part 401 and the rocker arm 300. In addition, the transmission part 401 abuts against one of the inner sidewalls in the width direction of the oblong hole 301. When the operating component 400 is moved under force, it can synchronously drive the rocker arm 300 to rotate, thereby synchronously driving the rotating shaft 111 to rotate. This is beneficial for the precise operation of the closing and opening actions of the disconnecting switch 11.

[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A disconnector operating mechanism (12) for operating a disconnector (11) to close or open, wherein the disconnector (11) has a rotating shaft (111) for performing closing or opening, characterized in that, The disconnector switch operating mechanism (12) includes: Outer shell (100); The mounting body (200) is located inside the housing (100) and is used to install the disconnecting switch (11). A rocker arm (300) is used to rotatably connect with the rotating shaft (111); the rocker arm (300) is provided with an oblong hole (301) spaced apart from the rotating shaft (111). An operating component (400) is rotatably connected to the housing (100) and has a transmission part (401) that extends into the waist-shaped hole (301) and is connected to the rocker arm (300) in a transmission manner; the operating component (400) is used to achieve closing or opening the circuit breaker by rotating the housing (100) to drive the rotating shaft (111) to rotate via the rocker arm (300).

2. The disconnector operating mechanism (12) according to claim 1, characterized in that, The transmission part (401) is cylindrical, and the width of the waist-shaped hole (301) is greater than the diameter of the transmission part (401).

3. The disconnector operating mechanism (12) according to claim 2, characterized in that, The transmission part (401) abuts against one of the inner sidewalls of the waist-shaped hole (301) in the width direction.

4. The disconnector operating mechanism (12) according to claim 2, characterized in that, The operating component (400) includes an operating handle (410) and a turntable (420); a connecting part (421) is provided at the center of one side of the turntable (420) in the thickness direction, and a transmission part (401) is eccentrically disposed on the other side of the turntable (420) in the thickness direction; the turntable (420) is disposed inside the housing (100), and the connecting part (421) passes through the housing (100) and is connected to the operating handle (410) outside the housing (100) in a transmission connection.

5. The disconnector operating mechanism (12) according to claim 4, characterized in that, The operating component (400) further includes a fixing seat (430), which is fixedly disposed inside the housing (100), and a limiting part (431) is provided on the fixing seat (430). The turntable (420) is provided with an arc-shaped groove (422), and the limiting part (431) is provided in the arc-shaped groove (422); when the disconnecting switch (11) is in the closed position or the open position, the limiting part (431) abuts against one end of the arc-shaped groove (422).

6. The disconnector operating mechanism (12) according to claim 5, characterized in that, The two ends of the arc groove (422) form a first line and a second line with the center of the turntable (420), respectively. The center of the transmission part (401) forms a third line with the center of the turntable (420). The first line and the third line form an obtuse angle, and the second line and the third line form an acute angle.

7. The disconnector operating mechanism (12) according to claim 5, characterized in that, The operating component (400) further includes a pad (440) disposed between the turntable (420) and the housing (100), the thickness of the pad (440) being greater than the thickness of the fixing seat (430) to form a gap between the turntable (420) and the fixing seat (430).

8. The disconnector operating mechanism (12) according to claim 1, characterized in that, The end face of the rotating shaft (111) is provided with a slot (112); the rocker arm (300) is also provided with an assembly part (310), the assembly part (310) is provided with an installation groove (311), and the bottom wall of the installation groove (311) is provided with a locking block (312); the rotating shaft (111) extends into the installation groove (311), and the locking block (312) cooperates with the slot (112).

9. The disconnector operating mechanism (12) according to claim 8, characterized in that, The rotating shaft (111) is in clearance fit with the mounting groove (311), and the locking block (312) is in clearance fit with the locking groove (112).

10. A switching device (10), characterized in that, It includes a disconnect switch (11) and a disconnect switch operating mechanism (12) as described in claim 1, wherein the disconnect switch (11) is mounted on the mounting body (200), and the rocker arm (300) is connected to the rotating shaft (111) in a transmission connection.

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