Auxiliary switch driving device for operating mechanism and high-voltage circuit breaker

Abstract

The invention discloses an auxiliary switch driving device for an operating mechanism and a high-voltage circuit breaker. The auxiliary switch driving device comprises a bearing assembly; the transmission assembly is arranged on the bearing assembly, one end of the transmission assembly is externally connected with power output equipment, and the other end of the transmission assembly is movably connected with a guide assembly located at the bottom of the bearing assembly; the supporting assembly is mounted at the end part of the guide assembly and is used for connecting an auxiliary switch; under the driving of the power output equipment, the transmission assembly drives the guide assembly to move and pushes the supporting assembly to enable the auxiliary switch to rotate at the same time, so that signals of the auxiliary switch are changed. The switching angle of the auxiliary switch is accurately calculated according to the requirement for switching positions through position signals, the supporting assembly can push the rotating shaft of the auxiliary switch to rotate by different angles through cooperation of the guiding assembly and the supporting assembly in the auxiliary switch driving device, and therefore the requirement for sending different position signals can be met; accurate transmission of position signals can be achieved, and misoperation of other devices is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of high-voltage switches, and in particular relates to an auxiliary switch driving device for an operating mechanism and a high-voltage circuit breaker. Background Art

[0002] As an important component in the operating mechanism, the auxiliary switch is used to realize functions such as opening, closing, signal control and interlocking protection. The position signal it provides is directly related to the state judgment and logic control of the high-voltage switch. In the use of existing auxiliary switches, after the auxiliary switch is fully in place, there is a situation where the position signal cannot be sent to the operating mechanism, resulting in frequent misoperation; the essential reason is that when the auxiliary switch is in place, the time when its in-place position confirmation signal is sent is earlier than the actual in-place position time. However, when the auxiliary switch is not in place, the in-place signal sent in the early stage has been received by the operating mechanism, resulting in the operating mechanism being operated when it is not fully closed or opened, which directly leads to the misoperation of other equipment, mistakenly thinking that the operating mechanism is in the correct position, and then proceeding to the next operation, but in fact the operating mechanism is not correctly closed or opened, thus causing overall equipment failure or safety accidents; secondly, since the driving components on the auxiliary switch use electronic signals, they will also be disturbed by the operating environment during the operation process, resulting in the auxiliary switch in-place position confirmation signal being sent earlier, increasing the risk of equipment damage. Summary of the invention

[0003] The object of the present invention is to provide an auxiliary switch driving device and a high-voltage circuit breaker for an operating mechanism. On the first aspect, it is used to solve the problem in the prior art that when the auxiliary switch is not in place, the time when its in-place position confirmation signal is sent is earlier than the actual in-place position time. However, when the auxiliary switch is not in place, the in-place signal sent in the early stage has been received by the operating mechanism, resulting in the operating mechanism being operated when it is not fully closed or opened, which directly leads to the misoperation of other equipment, mistakenly believing that the operating mechanism is in the correct position, and thus performing the next operation, but in fact the operating mechanism is not correctly closed or opened, thereby causing overall equipment failure or safety accidents; on the second aspect, it is used to solve the technical defect that since the driving component on the auxiliary switch adopts electronic signals, it will also be disturbed by the working environment during the operation process, resulting in the auxiliary switch in-place position confirmation signal sending time is early, increasing the risk of equipment damage.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] In a first aspect, an auxiliary switch driving device for an operating mechanism is provided, comprising:

[0006] Load bearing components;

[0007] A transmission assembly is arranged on the bearing assembly, one end of the transmission assembly is externally connected to a power output device, and the other end is movably connected to a guide assembly, and the guide assembly is located at the bottom of the bearing assembly;

[0008] A support assembly, mounted on the end of the guide assembly, the support assembly being used to connect an auxiliary switch;

[0009] Wherein, under the drive of the power output device, the transmission component drives the guide component to move while pushing the support component to rotate the auxiliary switch, thereby changing the auxiliary switch signal.

[0010] Furthermore, the bearing assembly comprises a bearing plate, a top of the bearing plate is provided with movable holes, and the movable holes are arranged along the entire length of the bearing plate;

[0011] The transmission assembly comprises a nut, the nut is installed in the movable hole, a lead screw is connected to the nut, and an end of the lead screw is externally connected to a power output device;

[0012] The guide assembly comprises a guide plate, the guide plate is movably connected to the bottom of the bearing plate, and the support assembly is arranged at one end of the guide plate away from the bearing plate.

[0013] Furthermore, the carrying plate is provided with a first fixing unit and a second fixing unit, and the first fixing unit and the second fixing unit are arranged at intervals;

[0014] The guide plate is provided with a first mounting hole, a second mounting hole and a guide groove, the first fixing unit is arranged in the first mounting hole, the second fixing unit is arranged in the second mounting hole, and the guide groove cooperates with a nut;

[0015] Wherein, under the drive of the power output device, the lead screw drives the nut to move in the guide groove, so that the guide plate is displaced toward the second fixing unit.

[0016] Further, the guide plate is a T-shaped structure having a horizontal end and a vertical end;

[0017] Wherein, the first mounting hole and the second mounting hole are arranged on the vertical end of the guide plate, and the guide groove is arranged on the horizontal end of the guide plate.

[0018] Furthermore, the guide groove is a long strip structure, and the two ends of the guide groove are inclined with respect to the middle of the guide groove.

[0019] Furthermore, the first mounting hole and the second mounting hole are also long strip structures.

[0020] Furthermore, the first fixing unit and the second fixing unit have the same structure.

[0021] Furthermore, one end of the first fixing unit is connected to the bearing plate, and the other end is connected to the guide plate.

[0022] Furthermore, the support assembly comprises a clamping fork and a crank arm, wherein the clamping fork is arranged at the top of one end of the guide assembly away from the bearing assembly, one end of the crank arm is connected to the clamping fork, and the other end is connected to the power output device.

[0023] In a second aspect, a high-voltage circuit breaker is provided, including a circuit breaker body, wherein an auxiliary switch is disposed in the circuit breaker body, and the auxiliary switch driving device as described above is mounted on the auxiliary switch.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The auxiliary switch switching angle is accurately calculated through the position signal switching position requirement. The cooperation between the guide component and the support component in the auxiliary switch drive device can enable the support component to push the auxiliary switch shaft to rotate at different angles, thereby meeting the needs of sending different position signals. Secondly, since the auxiliary switch drive device adopts a mechanized design as a whole, the problem of electronic interference is completely avoided, the position signal can be accurately sent, and the occurrence of misoperation of other equipment is avoided, thereby improving the safety of operation and reducing the risk of equipment damage.

[0026] 2. The bearing plate is the foundation of the entire device. The movable hole on it allows the nut to move freely along the length direction, providing the necessary movement space for the transmission component. The combination of the nut and the lead screw constitutes a spiral transmission mechanism, which has the advantages of high transmission efficiency, smooth movement, and accurate positioning. Finally, the guide plate is movably connected to the bottom of the bearing plate, providing stable guidance and support for the support component, and also making the structure of the entire device more compact.

[0027] 3. The first fixing unit and the second fixing unit arranged on the bearing plate provide stable fixing points for the guide plate. The interval arrangement not only enhances the stability of the structure, but also ensures the guiding property of the guide plate during movement. The guide groove enables the nut to move smoothly in it, avoiding errors or damage caused by unstable movement. At the same time, the cooperation between the guide groove and the nut also enhances the accuracy and reliability of the entire transmission system.

[0028] 4. The guide plate of the T-shaped structure has a larger cross-sectional area, thereby enhancing its structural strength and stability, making the guide plate more solid when bearing the force and torque from the transmission component, and less prone to deformation or damage. The first mounting hole and the second mounting hole are arranged on the vertical end of the guide plate, which can more effectively utilize the mechanical characteristics of the T-shaped structure, optimize the mechanical transmission path, and enable the power provided by the power output device to be more directly and effectively transmitted to the guide plate, reducing energy loss and friction wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 An overall schematic diagram of the auxiliary switch driving device for the operating mechanism provided by the present invention;

[0031] Figure 2 A first top view of the auxiliary switch driving device for the operating mechanism provided by the present invention;

[0032] Figure 3 A side view of the auxiliary switch driving device for the operating mechanism provided by the present invention;

[0033] Figure 4 A second top view of the auxiliary switch driving device for the operating mechanism provided by the present invention;

[0034] Figure 5 A schematic diagram of the operation of the auxiliary switch driving device for the operating mechanism provided by the present invention;

[0035] Wherein: 1. bearing plate; 101. movable hole; 2. nut; 3. lead screw; 4. guide plate; 401. first mounting hole; 402. second mounting hole; 403. guide groove; 5. first fixing unit; 6. second fixing unit; 7. clamping fork; 8. crank arm; 9. auxiliary switch. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] As an important component in the operating mechanism, the auxiliary switch is used to realize functions such as opening, closing, signal control and interlocking protection. The position signal it provides is directly related to the state judgment and logic control of the high-voltage switch. In the use of existing auxiliary switches, after the auxiliary switch is fully in place, there is a situation where the position signal cannot be sent to the operating mechanism, resulting in frequent misoperation; the essential reason is that when the auxiliary switch is in place, the time when its in-place position confirmation signal is sent is earlier than the actual in-place position time. However, when the auxiliary switch is not in place, the in-place signal sent in the early stage has been received by the operating mechanism, resulting in the operating mechanism being operated when it is not fully closed or opened, which directly leads to the misoperation of other equipment, mistakenly thinking that the operating mechanism is in the correct position, and then proceeding to the next operation, but in fact the operating mechanism is not correctly closed or opened, thus causing overall equipment failure or safety accidents; secondly, since the driving components on the auxiliary switch use electronic signals, they will also be disturbed by the operating environment during the operation process, resulting in the auxiliary switch in-place position confirmation signal being sent earlier, increasing the risk of equipment damage.

[0042] In order to solve the above technical defects, the inventor provides an auxiliary switch driving device for an operating mechanism and a high-voltage circuit breaker.

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0044] First, as Figure 1-Figure 5As shown, an embodiment of the present invention provides an auxiliary switch driving device for an operating mechanism, comprising: a bearing assembly; a transmission assembly, which is arranged on the bearing assembly, one end of the transmission assembly is externally connected to a power output device, and the other end is movably connected to a guide assembly, and the guide assembly is located at the bottom of the bearing assembly; a support assembly, which is installed at the end of the guide assembly, and the support assembly is used to connect the auxiliary switch 9; wherein, under the drive of the power output device, the transmission assembly drives the guide assembly to move while pushing the support assembly to rotate the auxiliary switch, thereby changing the auxiliary switch signal. During the application process, the auxiliary switch driving device accurately calculates the switching angle of the auxiliary switch 9 according to the position signal switching position requirement, and adopts the cooperation of the guide assembly and the support assembly in the auxiliary switch driving device, so that the support assembly can push the auxiliary switch 9 shaft to rotate at different angles, thereby meeting the requirement of sending different position signals; secondly, since the auxiliary switch driving device adopts a mechanized design as a whole, the problem of electronic interference is completely avoided, the accurate sending of the position signal can be realized, and the occurrence of misoperation of other equipment is avoided, the safety of the operation is improved, and the risk of equipment damage is reduced.

[0045] like Figure 1 and Figure 4 As shown, the bearing assembly includes a bearing plate 1, and a movable hole 101 is opened on the top of the bearing plate 1. The movable hole 101 is arranged along the length of the bearing plate 1. The bearing plate 1 serves as the basis of the entire device, ensuring the stability and load-bearing capacity of the entire device. The opening of the movable hole 101 not only meets the installation requirements of the transmission assembly, but also ensures the integrity of the structure; the movable hole 101 is arranged along the length of the bearing plate 1, so that the transmission assembly can move freely within a certain range, thereby realizing flexible control of the auxiliary switch 9. The transmission assembly includes a nut 2, which is installed in the movable hole 101. A lead screw 3 is connected to the nut 2, and the end of the lead screw 3 is externally connected to a power output device; the cooperation between the nut 2 and the lead screw 3 realizes a precise transmission mechanism, and the rotation of the lead screw 3 can be converted into a linear motion of the nut 2. This transmission method has high precision and stability, ensuring the accuracy and reliability of the rotation of the auxiliary switch 9. The end of the lead screw 3 is externally connected to a power output device, so that the external power can be efficiently transmitted to the transmission assembly, thereby driving the rotation of the auxiliary switch 9. The external power output device here is preferably a motor. The guide assembly includes a guide plate 4, which is movably connected to the bottom of the carrier plate 1, and a support assembly is arranged at one end of the guide plate 4 away from the carrier plate 1. The guide plate 4 is movably connected to the bottom of the carrier plate 1, and plays a guiding role for the transmission assembly, ensuring the stability and accuracy of the transmission assembly during movement. The support assembly is arranged at one end of the guide plate 4 away from the carrier plate 1, which not only provides stable support for the auxiliary switch 9, but also realizes the connection with the auxiliary switch 9. By adjusting the position of the guide plate 4, the rotation of the auxiliary switch 9 can be flexibly controlled.

[0046] like Figure 2 , Figure 3 and Figure 4 As shown, the bearing plate 1 is provided with a first fixing unit 5 and a second fixing unit 6, the structures of the first fixing unit 5 and the second fixing unit 6 are the same, and the first fixing unit 5 and the second fixing unit 6 are arranged at intervals; the guide plate 4 is provided with a first mounting hole 401, a second mounting hole 402 and a guide groove 403, the first mounting hole 401 and the second mounting hole 402 are long strip structures, the first fixing unit 5 is arranged in the first mounting hole 401, the second fixing unit 6 is arranged in the second mounting hole 402, and the guide groove 403 cooperates with the nut 2; wherein, under the drive of the power output device, the lead screw 3 drives the nut 2 to move in the guide groove 403, so that the guide plate 4 moves toward the second fixing unit 6. The first fixing unit 5 and the second fixing unit 6 are arranged at intervals on the bearing plate 1, and by being respectively installed in the first mounting hole 401 and the second mounting hole 402 of the guide plate 4, a stable connection with the guide plate 4 is realized, and the stability and reliability of the guide plate 4 during the movement process are ensured. The cooperation between the guide groove 403 and the nut 2 realizes the precise control of the moving path of the nut 2 , ensuring that the nut 2 can move along a predetermined trajectory under the drive of the lead screw 3 , thereby realizing the precise control of the guide plate 4 .

[0047] Furthermore, the guide plate 4 is a T-shaped structure with a horizontal end and a vertical end, which enhances the overall structural strength of the guide plate 4, making the guide plate 4 more stable when bearing a load and less prone to deformation or damage. Among them, the first mounting hole 401 and the second mounting hole 402 are arranged on the vertical end of the guide plate 4, which can ensure that they are stably and reliably connected with the first fixing unit 5 and the second fixing unit 6 on the carrier plate 1. The guide groove 403 is arranged on the horizontal end of the guide plate 4, and the guide groove 403 is a long strip structure. The two ends of the guide groove 403 are inclined to the middle of the guide groove 403. The inclined setting between the two ends and the middle of the guide groove 403 realizes the progressive transmission of the nut 2 under the drive of the screw 3, so that the nut 2 can gradually change its movement direction during the movement, thereby realizing the smooth and continuous control of the guide plate 4. When the external power output device drives the screw 3 to rotate, it can drive the nut 2 to move toward the end of the supporting plate 1 close to the external power output device. At this time, the guide plate 4 moves toward the first mounting hole 401, so that the supporting assembly drives the auxiliary switch 9 to rotate.

[0048] In the present solution, the first fixing unit 5 and the second fixing unit 6 have the same structure and can be manufactured using the same mold, process and material, thereby simplifying the production process, reducing manufacturing costs and improving production efficiency; and, since the first fixing unit 5 and the second fixing unit 6 have the same structure, they can be used interchangeably, increasing the flexibility of the device, making it easier for operators to find replacement parts during maintenance or replacement, thereby reducing downtime and maintenance costs.

[0049] In this solution, one end of the first fixing unit 5 is connected to the carrier plate 1, and the other end is connected to the guide plate 4. The first fixing unit 5 serves as a fixing component connecting the carrier plate 1 and the guide plate 4, ensuring the stable support of the guide plate 4 in the vertical direction, so that the guide plate 4 can be firmly fixed on the carrier plate 1 to prevent it from shaking or shifting during operation, thereby ensuring the stability and reliability of the entire device. Secondly, by connecting one end of the first fixing unit 5 to the carrier plate 1 and the other end to the guide plate 4, a reasonable structural layout is achieved, which not only makes the entire device more compact and beautiful, but also helps to optimize space utilization and reduce unnecessary material waste.

[0050] like Figure 1 As shown, the support assembly includes a clamping fork 7 and a crank arm 8. The clamping fork 7 is arranged at the top of the end of the guide assembly away from the load-bearing assembly. One end of the crank arm 8 is rotatably connected to the clamping fork 7, and the other end is connected to the power output device. The clamping fork 7 is arranged at the top of the end of the guide assembly away from the load-bearing assembly, which provides stable support for the entire guide assembly, ensures the stability of the guide assembly in the vertical direction, and prevents it from shaking or tilting due to gravity or external force. The crank arm 8 serves as a bridge connecting the clamping fork 7 and the power output device. By transferring power from the power output device to the clamping fork 7, and then transferring it to the guide assembly via the clamping fork 7, effective force transmission and conversion are achieved, and the transmission efficiency and response speed of the entire device are improved. Secondly, the design of the clamping fork 7 and the crank arm 8 enhances the structural strength of the entire support assembly, which can withstand the large torque and impact force from the power output device, ensuring the stable operation of the device under harsh working conditions.

[0051] In the second aspect, an embodiment of the present invention provides a high-voltage circuit breaker, including a circuit breaker body, wherein an auxiliary switch is provided in the circuit breaker body, and the auxiliary switch is installed with the auxiliary switch driving device as described above. The blocking switch driving device is installed on the high-voltage circuit breaker. When in use, the auxiliary switch switching angle is accurately calculated according to the position switching requirement of the position signal, and the cooperation between the guide component and the support component in the auxiliary switch driving device can enable the support component to push the auxiliary switch shaft to rotate at different angles; specifically, the switching angle of the auxiliary switch can be controlled by controlling the arm length of the crank arm, so that the auxiliary switch has the function of sending a signal in advance or delaying the sending of a signal, thereby meeting the need to send different position signals; secondly, since the auxiliary switch driving device adopts a mechanized design as a whole, the problem of electronic interference is completely avoided, the position signal can be accurately sent, and the occurrence of misoperation of other equipment is avoided, the safety of the operation is improved, and the risk of equipment damage is reduced.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. An auxiliary switch driving device for an operating mechanism, characterized in that: include: Load bearing components; A transmission assembly is arranged on the bearing assembly, one end of the transmission assembly is externally connected to a power output device, and the other end is movably connected to a guide assembly, and the guide assembly is located at the bottom of the bearing assembly; A support assembly, mounted on an end of the guide assembly, the support assembly being used to connect an auxiliary switch (9); Wherein, under the drive of the power output device, the transmission component drives the guide component to move while pushing the support component to rotate the auxiliary switch, thereby changing the auxiliary switch signal.

2. The auxiliary switch driving device for the operating mechanism according to claim 1, characterized in that: The bearing assembly comprises a bearing plate (1), a top of the bearing plate (1) is provided with a movable hole (101), and the movable hole (101) is arranged along the entire length of the bearing plate (1); The transmission assembly comprises a nut (2), the nut (2) is installed in the movable hole (101), a lead screw (3) is connected to the nut (2), and an end of the lead screw (3) is externally connected to a power output device; The guide assembly comprises a guide plate (4), the guide plate (4) is movably connected to the bottom of the carrier plate (1), and the support assembly is arranged at an end of the guide plate (4) away from the carrier plate (1).

3. The auxiliary switch driving device for the operating mechanism according to claim 2, characterized in that: The carrying plate (1) is provided with a first fixing unit (5) and a second fixing unit (6), wherein the first fixing unit (5) and the second fixing unit (6) are arranged at an interval; The guide plate (4) is provided with a first mounting hole (401), a second mounting hole (402) and a guide groove (403); the first fixing unit (5) is arranged in the first mounting hole (401), the second fixing unit (6) is arranged in the second mounting hole (402), and the guide groove (403) cooperates with the nut (2); Wherein, under the drive of the power output device, the lead screw (3) drives the nut (2) to move in the guide groove (403), so that the guide plate (4) is displaced toward the second fixing unit (6).

4. The auxiliary switch driving device for the operating mechanism according to claim 3, characterized in that: The guide plate (4) is a T-shaped structure having a horizontal end and a vertical end; The first mounting hole (401) and the second mounting hole (402) are arranged on the vertical end of the guide plate (4), and the guide groove (403) is arranged on the horizontal end of the guide plate (4).

5. The auxiliary switch driving device for the operating mechanism according to claim 3 or 4, characterized in that: The guide groove (403) is a long strip structure, and the two ends of the guide groove (403) and the middle of the guide groove (403) are arranged at an angle.

6. The auxiliary switch driving device for the operating mechanism according to claim 3 or 4, characterized in that: The first mounting hole (401) and the second mounting hole (402) are also long strip structures.

7. The auxiliary switch driving device for the operating mechanism according to claim 3, characterized in that: The first fixing unit (5) and the second fixing unit (6) have the same structure.

8. The auxiliary switch driving device for the operating mechanism according to claim 3, characterized in that: One end of the first fixing unit (5) is connected to the carrying plate (1), and the other end is connected to the guide plate (4).

9. The auxiliary switch driving device for the operating mechanism according to claim 1, characterized in that: The support assembly comprises a clamping fork (7) and a crank arm (8), wherein the clamping fork (7) is arranged at the top of one end of the guide assembly away from the bearing assembly, one end of the crank arm (8) is connected to the clamping fork (7), and the other end is connected to the power output device.

10. A high voltage circuit breaker, comprising a circuit breaker body, wherein an auxiliary switch is provided in the circuit breaker body, wherein: The auxiliary switch is mounted with the auxiliary switch driving device according to any one of claims 1 to 9.

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