A manual two-position operating mechanism for a high-voltage switch

Abstract

The present invention provides a manual two-position operating mechanism for a high-voltage switch, which relates to the field of high-voltage composite electrical appliances. It includes an operating box, a large support plate is installed on the bottom plate of the operating box, a gear transmission assembly is installed on the large support plate, a rocker arm is connected to the driving end of the gear transmission assembly, and an auxiliary switch is connected to the conversion end of the gear transmission assembly; a limit pin is installed on the rocker arm, a reset structure is arranged on the limit pin, and an open position fixing hole and a closed position fixing hole that cooperate with the limit pin are arranged on the large support plate; a mounting plate is fixed on the large support plate; a travel switch is installed on the mounting plate, and an aviation plug is installed on the operating box. Through the design of the gear transmission assembly, the rocker arm can be rotated to different positions and fixed by the limit pin, so as to realize the switching of two positions. Moreover, the mechanism has a large output torque, is convenient and labor-saving, and has a small volume, which can effectively save materials.

Description

Technical Field

[0001] The present invention relates to a manual two-position operating mechanism for a high-voltage switch of a gas-insulated metal-enclosed switchgear, and particularly to a high-voltage combined electrical appliance. Background Art

[0002] Gas-insulated metal-enclosed switchgear (GIS) is widely used in power construction both domestically and internationally. Its protective devices, voltage transformers and lightning arresters, are crucial components of high-voltage combination electrical equipment. Because some components in the equipment have high charging currents or voltage restrictions, certain components, such as power transformers, certain voltage transformers, and lightning arresters, need to be isolated during testing. State Grid and China Southern Power Grid also require the addition of an isolation break before the lightning arrester or voltage transformer to facilitate on-site testing. Currently, the isolation break function is implemented using a manual isolation operating mechanism. Its open / close indication status is difficult to observe, the operating angle is 90°, and the output torque is low. When the switch becomes stuck, the mechanism often suffers damage, causing production stagnation during maintenance and, in severe cases, impacting power safety.

[0003] Based on the above situation, there is an urgent need to develop a large-torque manual operating mechanism. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a manual two-position operating mechanism for a high-voltage switch to solve the above-mentioned technical problems.

[0005] The present invention provides a manual two-position operating mechanism for a high-voltage switch, comprising an operating box and an aviation plug, wherein a large support plate, a mounting plate, an auxiliary switch, a rocker arm and a gear transmission assembly are installed in the operating box; the large support plate is mounted on the bottom plate of the operating box, the gear transmission assembly is mounted on the large support plate, the rocker arm is connected to the driving end of the gear transmission assembly, and the auxiliary switch is connected to the conversion end of the gear transmission assembly; a limit pin is installed on the rocker arm, and an open position fixing hole and a closed position fixing hole cooperating with the limit pin are provided on the large support plate; the aviation plug is mounted on the operating box.

[0006] Furthermore, the gear transmission assembly includes an auxiliary branch plate, a large gear support, an oil-free bearing, a large gear, an output gear, an operating gear and a pin shaft. The operating gear is coaxially installed with the rocker arm, and the operating gear is installed between the large support plate and the bottom plate of the operating box through a bearing. The operating gear is meshed with the output gear, and the output gear is installed between the large support plate and the bottom plate of the operating box through a bearing. The output gear is meshed with the large gear, and the large gear is installed on the large gear support through an oil-free bearing. The large gear support is installed on the auxiliary branch plate, the auxiliary switch is installed on the auxiliary branch plate, and the auxiliary branch plate is installed on the large branch plate; a fixing hole is provided on the large gear, a positioning hole is provided on the bottom plate of the operating box, and the pin shaft passes through the fixing hole and the positioning hole.

[0007] Furthermore, a reset structure is provided on the limit pin.

[0008] Furthermore, a limit hole is provided on the rocker arm. The reset structure includes a limit pin, a spring and a retaining ring. The limit pin and the spring are installed in the limit hole of the rocker arm, and the retaining ring plugs the limit hole and restricts the axial movement of the limit pin.

[0009] Furthermore, a driving hole is provided on the rocker arm. A crank is detachably installed in the operation box, and the crank is structurally matched with the driving hole.

[0010] Furthermore, the operation box includes a box body and a box cover. The box cover is detachably connected to the box body through a buckle, and a ventilation cover is provided on the box cover.

[0011] Furthermore, a rubber strip is provided around the flanging of the box body. One end of the buckle is fixed on the box cover, and the other end of the buckle is fixed on the box body.

[0012] Furthermore, an observation window is provided on the operation box. The observation window is made of a sealing ring and toughened glass, and the sealing ring is made of weather-resistant ethylene propylene diene monomer (EPDM) material.

[0013] Furthermore, a split type indicator board is provided on the rocker arm, and the position of the split type indicator board is matched with the position of the observation window.

[0014] Furthermore, a travel switch is provided. The travel switch is installed on the mounting plate, and the travel switch senses the position of the rocker arm.

[0015] The beneficial effects of the present invention are as follows. The manual two-position operating mechanism for high-voltage switches provided by the present invention designs a gear transmission component, connects the rocker arm to the driving end of the gear transmission component, and connects the auxiliary switch to the conversion end of the gear transmission component. The user can directly rotate the rocker arm to different positions and fix it through the limit pin, thereby indirectly adjusting the opening and closing states of the auxiliary switch and realizing the switching of two positions.

[0016] The cooperation between the gear transmission component and the rocker arm increases the output torque of the mechanism. When switching states, the large rotation of the rocker arm is converted into the rotation of the output shaft, which is convenient and labor-saving.

[0017] Moreover, the overall layout of the mechanism is compact and the volume is small, which can effectively save materials.

[0018] In addition, the design principle of the present invention is reliable, the structure is simple, and it has a very wide application prospect. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is Figure 1 top view schematic diagram of;

[0022] Figure 3 is Figure 1 right view schematic diagram of;

[0023] Figure 4 Schematic diagram of the open state of the present invention;

[0024] Figure 5 is Figure 4 A - A cross - sectional schematic diagram in;

[0025] Figure 6 Schematic diagram of the closed state of the present invention.

[0026] In the figure, 1. Ventilation cover, 2. Box cover, 3. Rubber strip, 4. Buckle, 5. Aviation plug, 6. Box body, 7. Sealing ring, 8. Tempered glass, 9. Mounting plate, 10. Travel switch, 11. Rocker arm, 12. Crank, 13. Operation identification plate, 14. Open - close indicator plate, 15. Auxiliary opening plate, 16. Auxiliary switch, 17. Large gear support, 18. Large gear, 19. Oil - free bearing, 20. Pin shaft, 21. Large support plate, 22. Output gear, 23. Operation gear, 24. Limit pin, 25. Spring, 26. Retaining ring. Specific embodiments

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] A manual two - position operating mechanism for a high - voltage switch includes an operation box and an aviation plug. The operation box includes a box body 6 and a box cover 2. The box cover 2 is detachably connected to the box body 6 through a buckle 4, and a ventilation cover 1 is provided on the box cover 2.

[0029] The operation identification plate 13 is fixed on the bottom plate of the box body 6 by screws, and the split type indicating plate 14 is fixed on the rocker arm 11 by screws. An observation window is provided on the operation box, and the observation window is made of toughened glass 8 and a sealing ring 7, and the sealing ring 7 is made of weather-resistant ethylene propylene diene monomer material. The position of the split type indicating plate 14 is matched with the position of the observation window to facilitate observing the opening and closing state.

[0030] The rubber strip 3 is buckled around the flanging of the box body 6. One end of the buckle 4 is fixed on the box cover 2 by a rivet, and the other end is fixed on the box body 6 by a screw. Through the connection of the buckle 4, the rubber strip 3 is tightly pressed between the box cover 2 and the box body 6, and the aviation plug 5 is fixed on the box body 6 by a nut.

[0031] A large support plate 21, a mounting plate 9, a travel switch 10, an auxiliary switch 16, an aviation plug 5, a rocker arm 11 and a gear transmission component are installed in the operation box; the large support plate 21 is installed on the bottom plate of the operation box, the gear transmission component is installed on the large support plate 21, the rocker arm 11 is connected to the driving end of the gear transmission component, and the auxiliary switch 16 is connected to the conversion end of the gear transmission component; a limit pin 24 is installed on the rocker arm 11, a reset structure is provided on the limit pin 24, and an open position fixing hole and a closed position fixing hole for cooperating with the limit pin 24 are provided on the large support plate 21; the mounting plate 9 is fixed on the large support plate 21 by bolts, the travel switch 10 is fixed on the mounting plate 9 by screws, the travel switch 10 senses the position of the rocker arm 11, and the aviation plug 5 is installed on the operation box.

[0032] Further, the gear transmission component includes an auxiliary support plate 15, a large gear support 17, an oil-free bearing 19, a large gear 18, an output gear 22, an operation gear 23 and a pin shaft 20. The operation gear 23 is coaxially installed with the rocker arm 11, the operation gear 23 is installed between the large support plate 21 and the bottom plate of the box body 6 through a bearing, the operation gear 23 meshes with the output gear 22, the output gear 22 is installed between the large support plate 21 and the bottom plate of the operation box, the output gear 22 meshes with the large gear 18, the large gear 18 is installed on the large gear support 17 through the oil-free bearing 19, the large gear support 17 is installed on the auxiliary support plate 15, and the auxiliary switch 16 is installed on the auxiliary support plate 15; the auxiliary support plate 15 is installed on the large support plate 21.

[0033] A fixing hole is provided on the large gear 18, and a positioning hole is provided on the bottom plate of the operation box. The pin shaft 20 passes through the fixing hole and the positioning hole. The gear transmission component is arranged in a straight line, and the included angle formed by the open position fixing hole and the closed position fixing hole and the rotating shaft of the rocker arm is greater than 90°;

[0034] The rocker arm 11 is provided with a limiting hole. The reset structure includes a limiting pin 24, a spring 25 and a retaining ring 26. The limiting pin 24 and the spring 25 are installed in the limiting hole of the rocker arm 11. The retaining ring 26 seals the limiting hole and restricts the axial movement of the limiting pin 24. The limiting pin 24 and the spring 25 are fixed on the rocker arm 11 by the retaining ring 26.

[0035] The rocker arm 11 is provided with a driving hole. The crank handle 12 is detachably fixed on the bottom plate of the box body 6 by bolts. The crank handle 12 is structurally matched with the driving hole.

[0036] When performing opening and closing operations, the box cover 2 is removed by loosening the buckle 4. The bolt on the crank handle 12 is loosened and the crank handle 12 is removed and inserted into the driving hole of the rocker arm 11. The limiting pin 24 is pulled upward and the crank handle 12 is rotated to drive the operating gear 23 to rotate. The output gear 22 is driven to rotate through gear meshing. At the same time, the output gear 22 drives the large gear 18 to rotate through gear meshing. The square hole of the large gear 18 is matched with the square shaft of the auxiliary switch 16 to realize the conversion of the auxiliary switch 16. The opening and closing operations are realized through the above process.

[0037] After the opening or closing is in place, the limiting pin 24 is released. Under the action of the spring 25, the limiting pin 24 automatically inserts into the corresponding hole of the large support plate 21 to realize the locking function.

[0038] The manual two-position operating mechanism for high-voltage switches provided by the present invention designs a gear transmission component. The rocker arm 11 is connected to the driving end of the gear transmission component, and the auxiliary switch 16 is connected to the conversion end of the gear transmission component. The user can directly rotate the rocker arm 11 to different positions and fix it with the limiting pin 24 to realize the switching of two positions, and at the same time switch the opening and closing states of the auxiliary switch 16.

[0039] The sealing ring 7 made of weather-resistant ethylene propylene diene monomer material and the toughened glass 8 are used as the observation window structure. The installation is convenient, the sealing effect is good, and the opening and closing indication states of the mechanism are convenient to observe.

[0040] The output torque of the mechanism is large, which is convenient and labor-saving. Moreover, the structure of the device is compact and the volume is small, which can save materials.

[0041] Except for the output gear 22 connected to the rocker arm 11, there are no through holes on the box body 6. The waterproof structure is good, the service life is long, and the maintenance cost is low.

[0042] The box cover 2 and the box body 6 are connected by a buckle 4. During operation, the box cover 2 can be easily removed, which is convenient and time-saving.

[0043] Although the present invention has been described in detail by referring to the accompanying drawings and in conjunction with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope covered by the present invention. Any person familiar with the technical field of the present invention can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims

1. A manual two-position operating mechanism for a high-voltage switch, characterized by: It comprises an operating box and an aviation plug (5), wherein a large support plate (21), a mounting plate (9), an auxiliary switch (16), a rocker arm (11) and a gear transmission assembly are installed in the operating box; The large support plate (21) is mounted on the bottom plate of the operating box, the gear transmission assembly is mounted on the large support plate (21), the rocker arm (11) is connected to the driving end of the gear transmission assembly, and the conversion shaft of the auxiliary switch (16) is connected to the conversion end of the gear transmission assembly; A limit pin (24) is installed on the rocker arm (11), and an open position fixing hole and a closed position fixing hole that match the limit pin (24) are provided on the large support plate (21); The aviation plug (5) is installed on the operation box; The gear transmission assembly comprises an auxiliary branch plate (15), a large gear support (17), an oil-free bearing (19), a large gear (18), an output gear (22), and an operating gear (23); The operating gear (23) is coaxially mounted with the rocker arm (11), the operating gear (23) is mounted between the large support plate (21) and the bottom plate of the operating box via a bearing, the operating gear (23) is meshed with the output gear (22), the output gear (22) is mounted between the large support plate (21) and the bottom plate of the operating box via a bearing, the output gear (22) is meshed with the large gear (18), the large gear (18) is mounted on the large gear support (17) via an oil-free bearing (19), the large gear support (17) is mounted on the auxiliary branch plate (15), the auxiliary switch (16) is mounted on the auxiliary branch plate (15), and the auxiliary branch plate (15) is mounted on the large support plate (21); The large gear (18) is rotatably connected to the bottom plate of the operating box; A reset structure is provided on the limit pin (24); A limiting hole is provided on the rocker arm (11), and the reset structure comprises a limiting pin (24), a spring (25) and a retaining ring (26). The limiting pin (24) and the spring (25) are installed in the limiting hole of the rocker arm (11), and the retaining ring (26) blocks the limiting hole and limits the axial movement of the limiting pin (24).

2. The manual two-position operating mechanism for a high-voltage switch according to claim 1, characterized in that: A driving hole is provided on the rocker arm (11), and a crank handle (12) is detachably installed in the operating box, and the crank handle (12) is structurally matched with the driving hole.

3. The manual two-position operating mechanism for a high-voltage switch according to claim 1, characterized in that: The operating box comprises a box body (6) and a box cover (2); the box cover (2) is detachably connected to the box body (6) via a buckle (4); and a breathable cover (1) is provided on the box cover (2).

4. The manual two-position operating mechanism for a high-voltage switch according to claim 3, characterized in that: A circle of rubber strip (3) is provided at the flange of the box body (6), one end of the buckle (4) is fixed on the box cover (2), and the other end of the buckle (4) is fixed on the box body (6).

5. The manual two-position operating mechanism for a high-voltage switch according to claim 4, characterized in that: The operation box is provided with an observation window, which is made of a sealing ring and tempered glass, and the sealing ring (7) is made of weather-resistant EPDM material.

6. The manual two-position operating mechanism for a high-voltage switch according to claim 5, characterized in that: The rocker arm (11) is provided with a split-and-close indicator plate (14), and the position of the split-and-close indicator plate (14) matches the position of the observation window.

7. The manual two-position operating mechanism for a high-voltage switch according to claim 1, characterized in that: The invention comprises a travel switch (10), wherein the travel switch (10) is mounted on a mounting plate (9), and the travel switch (10) senses the position of a rocker arm (11).

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