Operating device for switchgear circuit breaker trolley

Abstract

This application discloses an operating device for a switchgear circuit breaker trolley, comprising a handle, an operating lever, and a planetary gear assembly disposed between the handle and the operating lever. The planetary gear assembly includes a gear ring; a planet carrier disposed in the inner cavity of the gear ring, the planet carrier being connected to one end of the handle; planetary gears disposed on the planet carrier and meshing with the gear ring; and a sun gear meshing with the planetary gears, the sun gear being connected to one end of the operating lever. This operating device for a switchgear circuit breaker trolley features a planetary gear assembly between the handle and the operating lever. This planetary gear assembly transmits the motion received by the handle to the operating lever, enabling rapid advancement or withdrawal of the trolley to adjust the circuit breaker position with fewer turns of the handle, thus reducing the number of handle turns required.

Description

Technical Field

[0001] This utility model belongs to the field of switchgear technology, specifically relating to an operating device for a switchgear circuit breaker trolley. Background Technology

[0002] Truck-mounted circuit breakers are a common installation method in high-voltage switchgear. They mount the circuit breaker and its operating mechanism on a movable truck. The truck is connected to the switchgear cabinet via guide rails, allowing for the truck to be moved forward and out of the cabinet. The advent of truck-mounted circuit breakers has greatly improved the convenience of maintenance and operational flexibility of high-voltage switchgear. When the circuit breaker needs maintenance or replacement, there is no need to shut down the entire switchgear; simply pulling the truck out of the cabinet allows for maintenance work to be carried out in a safe environment, reducing power outage time and improving the reliability of the power supply system. Furthermore, truck-mounted circuit breakers have comprehensive anti-misoperation functions, such as mechanical and electrical interlocking devices, ensuring that the truck cannot move when the circuit breaker is closed; and that the circuit breaker can only be operated when the truck is in the working or test position, effectively protecting the safety of operators and equipment.

[0003] The operating lever for switchgear circuit breaker trolleys, as a specialized tool for operating trolley-type circuit breakers, directly impacts the operational efficiency and safety of these trolley-type circuit breakers due to its ease of operation, reliability, and compatibility with the switchgear and circuit breakers. Traditional operating levers for switchgear circuit breaker trolleys are typically manual, requiring operators to manually crank the lever to advance and withdraw the trolley. Therefore, efficiently advancing and withdrawing trolley-type circuit breakers in high-voltage switchgear is imperative. Currently, existing trolley speed-increasing operating levers in substations have simple, heavy components and require numerous cranking rotations. Advancing and withdrawing the trolley demands considerable endurance and a long operating stroke from substation maintenance personnel. The excessive cranking in the control room often leads to strenuous operation, reduced operational quality, and considerable inconvenience for substation maintenance staff. A more efficient and reliable operating tool is needed to facilitate safe operation by substation maintenance personnel and ensure efficient and reliable advancement and withdrawal of the trolley. To improve the timeliness and safety of substation switching operations, ensure the safety and reliability of power grid equipment shutdown and restoration, and reduce safety hazards, it is urgent to optimize and upgrade the speed-increasing operating lever of the high-voltage switchgear.

[0004] Therefore, developing a convenient, safe, and reliable operating device for switchgear circuit breaker trolleys is of great practical significance. Utility Model Content

[0005] To address some or all of the aforementioned technical problems in the existing technology, this utility model proposes an operating device for a switchgear circuit breaker trolley. This operating device for the switchgear circuit breaker trolley features a planetary gear assembly between the handle and the operating lever. This planetary gear assembly transmits the motion received by the handle to the operating lever, enabling the trolley to be quickly advanced or withdrawn to adjust the circuit breaker position with a smaller number of handle rotations, thus reducing the number of handle rotations required.

[0006] According to this utility model, an operating device for a switchgear circuit breaker trolley is provided, including a handle, an operating lever, and a planetary gear assembly disposed between the handle and the operating lever, the planetary gear assembly comprising:

[0007] Gear ring,

[0008] A planetary carrier is disposed within the inner cavity of the gear ring, and the planetary carrier is connected to one end of the handle.

[0009] The planetary gears are mounted on the planet carrier and mesh with the ring gear.

[0010] A sun gear is meshed with the planetary gears, and the sun gear is connected to one end of the operating lever.

[0011] In one embodiment, the planet carrier is constructed in a cross shape, and the planetary gears are connected to each side of the planet carrier by cylindrical pins.

[0012] In one embodiment, baffles are respectively provided on both ends of the gear ring along the axial direction, the handle passes through the baffles and is connected to the planet carrier, and the operating lever passes through the baffles and is connected to the sun gear.

[0013] In one embodiment, the baffle is attached to the gear ring by screws.

[0014] In one embodiment, a positioning pin is provided on the outer end face of the baffle near one end of the operating lever.

[0015] In one embodiment, the planetary carrier is threaded to one end of the handle.

[0016] In one embodiment, the sun gear is threaded to one end of the operating lever.

[0017] In one embodiment, the handle is configured as a Z-shaped handle.

[0018] In one embodiment, an insulating layer is provided on the surface of the handle at the end furthest from the planet carrier.

[0019] In one embodiment, the surface of the insulating layer is provided with anti-slip texture.

[0020] Compared with the prior art, the advantages of this utility model are as follows: During use, the operating lever is connected to the handcart, and the gear ring is fixed to the cabinet of the switchgear. By rotating the handle, the planet carrier of the planetary gear assembly is rotated, which in turn drives the planetary gears to rotate. The planetary gears then drive the sun gear to rotate, thereby actuating the operating lever. By setting a matching gear ratio, the operating lever can be accelerated by only a small amount of shaking of the handle, achieving a speed increase of several times. This effectively solves the problems of high workload and laborious operation for power plant operators. Attached Figure Description

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, in which:

[0022] Figure 1 An exploded view of an operating device for a switchgear circuit breaker trolley according to an embodiment of the present invention is shown;

[0023] Figure 2 This shows a front view of an operating device for a switchgear circuit breaker trolley according to an embodiment of the present invention;

[0024] Figure 3 A three-dimensional view of a baffle near the operating lever end of an operating device for a switchgear circuit breaker trolley according to an embodiment of the present invention is shown.

[0025] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0026] To make the technical solution and advantages of this utility model clearer, the exemplary embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0027] In the description of this utility model, it should be noted that the terms "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] An embodiment of this utility model provides an operating device for a switchgear circuit breaker trolley. For example... Figures 1 to 3 As shown, the operating device for the switchgear circuit breaker trolley includes a handle 11, an operating lever 1, and a planetary gear assembly. During use, the handle 11 is primarily used by the operator as the power input. The operating lever 1 is connected to the trolley and is used to drive the trolley for pushing and pulling. The planetary gear assembly is located between the handle 11 and the operating lever 1, and is mainly used for power transmission.

[0030] Structurally, the planetary gear assembly includes a ring gear 4, a planet carrier 7, planet gears 6, and a sun gear 5. The planet carrier 7 is housed within the cavity of the ring gear 4 and is connected to one end of the handle 11. The planet gears 6 are mounted on the planet carrier 7 and mesh with the ring gear 4. The sun gear 5 meshes with the planet gears 6 and is connected to one end of the operating lever 1.

[0031] Therefore, during operation, the operating lever 1 is connected to the handcart, while the gear ring 4 is fixed to the switchgear cabinet. Rotating the handle 11 drives the planetary carrier 7 of the planetary gear assembly to rotate, which in turn drives the planetary gears 6 to rotate. The planetary gears 6 then drive the sun gear 5 to rotate, which in turn actuates the operating lever 1. By setting the matching gear ratio of the planetary gear assembly, a mechanical gain effect can be achieved, converting a small input torque into a large output torque. This allows for accelerated rotation of the operating lever 1 with only a small amplitude of cranking the handle 11, achieving a speed increase of several times, effectively solving the problems of high workload and strenuous operation for power plant operators.

[0032] In one example, the planet carrier 7 is constructed in a cross shape. Planetary gears 6 are connected to each side of the cross-shaped planet carrier 7. Four planetary gears 6 are visible. The cross-shaped planet carrier 7 ensures that the four planetary gears 6 are evenly distributed, resulting in a more balanced load distribution and improved transmission smoothness and load-bearing capacity. This structure achieves synchronous movement of multiple planetary gears through rigid connections, effectively reducing vibration and noise. Furthermore, the structure is compact and has high space utilization.

[0033] For example, the planetary gear 6 is connected to the planet carrier 7 via the cylindrical pin 8. This arrangement effectively simplifies the assembly operation of the planetary gear 6 and improves work efficiency.

[0034] Baffles 3 are respectively provided on both ends of the gear ring 4 along the axial direction. After connection, the handle 11 passes through the baffle 3 at the same end and connects to the planet carrier 7. The operating lever 1 passes through the baffle 3 at the same end and connects to the sun gear 5. It can be seen that the double baffle design clamps the gear ring 4 in a fixed axial position, preventing the axial movement of the gear assembly, while forming a closed cavity to protect the gear and prevent external dust from entering.

[0035] Preferably, the baffle 3 is connected to the gear ring 4 by screws 2. This setup is simple and easy to implement.

[0036] A positioning pin 9 is provided on the outer end face of the baffle 3 near the operating lever 1. During use, this positioning pin 9 is used for positioning with the cabinet body of the switchgear. There are two positioning pins 9. Figure 1 The positioning pins 9 are spaced apart in the front and back directions. On the one hand, the positioning pins 9 can facilitate the quick positioning and installation of the baffle 3 onto the cabinet; on the other hand, the positioning pins 9 also limit the position of the gear ring 4, preventing the gear ring 4 from rotating with the planetary gear 6.

[0037] The planetary carrier 7 is threaded to one end of the handle 11. This design facilitates the installation and removal of the handle 11 from the planetary carrier 7. In particular, during use, it allows for easy replacement of handles 11 of different sizes, varying the torque function of the handle 11 to meet practical engineering needs and improve the practicality of the handle 11.

[0038] The sun gear 5 is threaded to one end of the operating lever 1. This design facilitates the installation and removal of the sun gear 5 and the operating lever 1. In particular, during use, when dealing with circuit breaker trucks of different specifications, different sizes of operating lever 1 can be used to adapt to various configurations, thus achieving the effect of multiple forms applicable to circuit breaker trucks of different specifications and solving the problem of low applicability.

[0039] Handle 11 is constructed as a Z-shaped handle. This design facilitates operation by allowing for torque optimization through dimensional adjustments.

[0040] An insulating layer 12 is provided on the surface of the handle 11 at the end away from the planetary carrier 7. This insulating layer can be a rubber insulating layer. The design of the rubber insulating layer in this solution can prevent electric shock during operation, improving work safety. In addition, the rubber insulating layer can also increase friction, making it easier for the operator to apply force. Anti-slip texture is provided on the surface of the insulating layer 12. This anti-slip texture can be a diamond-shaped grid pattern. The anti-slip texture further improves friction, making it easier for the operator to control the handle.

[0041] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and / or modifications falling within the scope of the present invention, and all changes and / or modifications made according to the embodiments of the present invention should be covered within the protection scope of the present invention.

Claims

1. An operating device for a switchgear circuit breaker trolley, characterized in that, It includes a handle, a lever, and a planetary gear assembly disposed between the handle and the lever, the planetary gear assembly comprising: Gear ring, A planetary carrier is disposed within the inner cavity of the gear ring, and the planetary carrier is connected to one end of the handle. The planetary gears are mounted on the planet carrier and mesh with the ring gear. A sun gear is meshed with the planetary gears, and the sun gear is connected to one end of the operating lever.

2. The operating device for a switchgear circuit breaker trolley according to claim 1, characterized in that, The planet carrier is cross-shaped, and the planetary gears are connected to each side of the planet carrier by cylindrical pins.

3. The operating device for a switchgear circuit breaker trolley according to claim 2, characterized in that, A baffle is provided on each of the two axial end faces of the gear ring. The handle passes through the baffle and is connected to the planet carrier. The operating lever passes through the baffle and is connected to the sun gear.

4. The operating device for a switchgear circuit breaker trolley according to claim 3, characterized in that, The baffle is attached to the gear ring by screws.

5. The operating device for a switchgear circuit breaker trolley according to claim 3, characterized in that, A positioning pin is provided on the outer end face of the baffle near one end of the operating lever.

6. The operating device for a switchgear circuit breaker trolley according to claim 1, characterized in that, The planetary carrier is threaded to one end of the handle.

7. The operating device for a switchgear circuit breaker trolley according to claim 1, characterized in that, The sun gear is threadedly connected to one end of the operating lever.

8. The operating device for a switchgear circuit breaker trolley according to any one of claims 1 to 7, characterized in that, The handle is constructed as a Z-shaped handle.

9. The operating device for a switchgear circuit breaker trolley according to claim 8, characterized in that, An insulating layer is provided on the surface of the handle at the end away from the planetary carrier.

10. The operating device for a switchgear circuit breaker trolley according to claim 9, characterized in that, Anti-slip textures are provided on the surface of the insulating layer.

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