Spring operating mechanism for sulfur hexafluoride arc extinguishing load switch

Abstract

The utility model relates to a spring operating mechanism for a sulfur hexafluoride arc extinguishing load switch, which comprises a first supporting plate, a second supporting plate, a motor main body and a motor gearbox, a driving shaft is arranged between the first supporting plate and the second supporting plate, the motor gearbox is arranged on one side, far away from the second supporting plate, of the first supporting plate, and the driving shaft is connected with the motor main body. An output shaft of the motor gearbox is coaxially arranged and connected to the driving shaft, and the axis of the motor body is perpendicular to the arrangement direction of the transmission assemblies. The spring operating mechanism is compact in overall structure, the occupied space of the supporting plate in the length direction is saved, and the miniaturization design of the spring operating mechanism is achieved.

Description

Technical Field

[0001] This application relates to the field of load switches, and more particularly to a spring operating mechanism for a sulfur hexafluoride arc-extinguishing load switch. Background Technology

[0002] Sulfur hexafluoride (SF6) arc-extinguishing load switches are widely used in various power systems, especially in applications requiring high reliability and long service life. They are simple in structure and easy to operate. SF6 load switches are typically used in conjunction with fuses to handle the making and breaking of transformer normal operating current and overload current, and are also responsible for breaking transfer current.

[0003] In the prior art, the spring operating mechanism in a sulfur hexafluoride arc-extinguishing load switch includes a first support plate and a second support plate. The first and second support plates are used to fix and install a transmission assembly, which is arranged along the length of the first and second support plates. The spring operating mechanism, through a drive shaft and gear mechanism, causes the closing spring to stretch and store energy. When closing, the closing half-shaft rotates, releasing the closing spring. The cam then rotates the output crank arm, driving the main shaft to move in the closing direction, completing the closing operation. Due to the increasing demand for miniaturization of opening and closing mechanisms, this application provides a novel spring operating mechanism for sulfur hexafluoride arc-extinguishing load switches, resulting in a compact overall structure and smaller footprint. Utility Model Content

[0004] To meet the requirement of miniaturization of the opening and closing mechanism, this application provides a spring operating mechanism for a sulfur hexafluoride arc-extinguishing load switch.

[0005] This application provides a spring operating mechanism for a sulfur hexafluoride arc-extinguishing load switch, which adopts the following technical solution:

[0006] A spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch includes a first support plate, a second support plate, a motor body, and a motor gearbox. A drive shaft is provided between the first support plate and the second support plate. The motor gearbox is located on the side of the first support plate away from the second support plate. The output shaft of the motor gearbox is coaxially connected to the drive shaft. The axis of the motor body is perpendicular to the arrangement direction of the transmission components.

[0007] By adopting the above technical solution, the axis of the motor body is perpendicular to the arrangement direction of the transmission components. Compared with setting the motor cover on one side of the length direction of the first support plate and the second support plate, the overall structure of the spring operating mechanism is compact, saving the space occupied in the length direction of the support plate and realizing the miniaturization design of the spring operating mechanism.

[0008] Optionally, the motor body is simultaneously mounted on the first support plate and the second support plate, and both the second support plate and the first support plate are provided with clearance grooves, which are used to avoid the motor body.

[0009] By adopting the above technical solution and creating clearance slots, the overall space occupied is further reduced without affecting other structures.

[0010] Optionally, the sidewall of the clearance groove abuts against the outer wall of the motor body.

[0011] By adopting the above technical solution, the side wall of the positioning groove abuts against the outer wall of the motor cover, so that the second support plate plays an auxiliary support role for the motor cover, reducing the structural strength requirements of the motor body.

[0012] Optionally, the motor gearbox is detachably connected to the first support plate.

[0013] By adopting the above technical solution, the motor gearbox is detached from the first support plate. When the motor gearbox malfunctions or is damaged, the staff can remove the motor for repair or replacement.

[0014] Optionally, a manual switch is provided on the end of the drive shaft that extends out of the second support plate, and the manual switch is used to allow the user to drive the drive shaft to rotate.

[0015] By adopting the above technical solution and setting a manual switch, the closing energy storage of the spring operating mechanism can be controlled by both electric and manual methods. In the event of motor failure, the spring operating mechanism can still work normally, thus improving the stability of the mechanism's operation.

[0016] Optionally, the end of the drive shaft that extends out of the second support plate is provided with a plug, and the manual switch is provided with a slot for the plug to be inserted, so as to fix the manual switch on the drive shaft and make the manual switch engage with the drive shaft for transmission.

[0017] By adopting the above technical solution, the manual switch can be easily assembled by plugging and connecting the plug and the slot, and the manual switch and the drive shaft can rotate synchronously.

[0018] Optionally, the motor body is provided with a hook, and the first support plate is provided with a mounting hole. The motor body is snapped together with the first support plate through the hook and the mounting hole.

[0019] By adopting the above technical solution, the hook assembly has a simple structure, is easy to process, and the snap-fit ​​connection makes it easier for operators to disassemble and assemble the motor.

[0020] Optionally, the end of the hook away from the motor body is provided with multiple barbs.

[0021] By adopting the above technical solution, multiple barbs can improve the stability of a snap-fit ​​connection and increase the connection strength.

[0022] Optionally, the drive shaft is provided with a helix, and the second support plate is provided with a worm gear. The worm gear meshes with the drive shaft for transmission. The worm gear is provided with a first protrusion, and the second support plate is provided with a second protrusion. The first protrusion is used to abut against the second protrusion.

[0023] By adopting the above technical solution, a speed reduction effect is achieved through worm gear transmission, and the number of rotations of the drive shaft is limited by the contact between the first and second protrusions. This is suitable for situations where the drive shaft is driven by a manual switch, preventing excessive manual rotation.

[0024] Optionally, the first bump and the second bump are magnetic.

[0025] By adopting the above technical solution, the first protrusion and the second protrusion are attracted to each other, so as to avoid the first protrusion and the second protrusion from reversing under the reaction force after they collide, so that the drive shaft stops at the appropriate position.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The spring operating mechanism has a compact overall structure, saving space occupied in the length direction of the support plate and realizing the miniaturization design of the spring operating mechanism;

[0028] 2. The side wall of the clearance groove abuts against the outer wall of the motor cover, so that the second support plate plays an auxiliary supporting role for the motor cover, reducing the structural strength requirements of the motor body;

[0029] 3. The number of rotations of the drive shaft is limited by the contact between the first and second protrusions to prevent excessive manual rotation. Attached Figure Description

[0030] Figure 1 This is an exploded view of the motor and the first support plate in Embodiment 1 of this application.

[0031] Figure 2 This is an exploded view of the drive shaft and manual switch in Embodiment 1 of this application.

[0032] Figure 3 This is an exploded view of the motor and the first support plate in Embodiment 2 of this application.

[0033] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0034] Figure 5 This is a schematic diagram of the assembly of the drive shaft with the first support plate 2 and the second support plate 3 in Embodiment 3 of this application.

[0035] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0036] Explanation of reference numerals in the attached drawings: 1. Motor; 11. Motor body; 12. Motor gearbox; 2. First support plate; 3. Second support plate; 31. Relief groove; 32. Second protrusion; 4. Drive shaft; 41. Insert block; 42. Helical line; 5. Manual switch; 51. Slot; 6. Mounting plate; 7. Hook; 8. Barb; 9. Through hole; 10. Worm gear; 101. First protrusion. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0038] Example 1:

[0039] Embodiment 1 of this application discloses a spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch. (Refer to...) Figure 1 It includes a motor 1, a first support plate 2 and a second support plate 3. A drive shaft 4 is rotatably mounted between the first support plate 2 and the second support plate 3. The end of the drive shaft 4 is fixedly connected to the output shaft of the motor 1. The motor 1 drives the drive shaft 4 to rotate.

[0040] Reference Figure 1 The motor 1 includes a motor body 11 and a motor gearbox 12. The motor gearbox 12 is detachably connected to the side wall of the first support plate 2 facing away from the second support plate 3 via a bolt assembly. The length extension direction of the motor body 11 is parallel to the direction from the first support plate 2 to the second support plate 3, and the motor body 11 is simultaneously mounted on the sides of both the first support plate 2 and the second support plate 3 along its extension direction. The axis of the motor body 11 is perpendicular to the length direction of the first support plate 2 and the second support plate 3. The sides of the first support plate 2 and the second support plate 3 are provided with clearance grooves 31, and the side walls of the clearance grooves 31 abut against the outer wall surface of the motor body 11, so that the second support plate 3 provides auxiliary support for the motor body 11.

[0041] Reference Figure 1 and Figure 2 The second support plate 3 extends through the end of the drive shaft 4, and a manual switch 5 is fixed on the end. The manual switch 5 is for manual rotation by the operator. A square insert 41 is integrally formed on the end of the drive shaft 4. The manual switch 5 has a square slot 51 for inserting the insert 41. The insert 41 and the slot 51 are fitted together to fix the manual switch 5 on the drive shaft 4 and allow it to rotate together with the drive shaft 4.

[0042] The implementation principle of the spring operating mechanism for a sulfur hexafluoride arc-extinguishing load switch in Embodiment 1 of this application is as follows: When it is necessary to install the spring operating mechanism for the sulfur hexafluoride arc-extinguishing load switch, the motor gearbox 12 is first fixedly installed on the front side of the first support plate 2 by bolt assembly. At this time, the motor body 11 is inserted into the relief groove 31 and abuts against the side wall of the relief groove 31. The end of the drive shaft 4 near the first support plate 2 is fixedly connected to the output shaft of the motor 1, and the drive shaft 4 passes through the second support plate 3. The first support plate 2 and the second support plate 3 are bolted together. Finally, the manual switch 5 is installed on the end of the drive shaft 4 near the second support plate 3 (the installation steps of other components are not described).

[0043] Example 2:

[0044] Reference Figure 3 and Figure 4 Unlike Embodiment 1, in this embodiment, the motor gearbox 12 is snap-fitted to the first support plate 2. Four hooks 7 are fixed to the motor gearbox 12 and evenly distributed on it. The first support plate 2 has four through holes 9, each corresponding to a hook 7. Two barbs 8 are located on the end of each hook 7 near the first support plate 2, facing away from each other. The operator snaps the motor gearbox 12 to the first support plate 2 by inserting the hooks 7 into the through holes 9. The hooks 7 are made of a high-hardness material with a certain degree of elasticity, such as metal.

[0045] Example 3:

[0046] Reference Figure 5 and Figure 6 Unlike Embodiment 1, in this embodiment, a spiral 42 protrudes from the drive shaft 4. A mounting plate 6 is fixed to the side of the second support plate 3 near the first support plate 2. A worm gear 10 is rotatably mounted on the mounting plate 6 via a bearing assembly, and the worm gear 10 meshes with the drive shaft 4 for transmission. A first protrusion 101 is integrally formed on the worm gear 10, and a second protrusion 32 is integrally formed on the second support plate 3. The first protrusion 101 and the second protrusion 32 are permanent magnets. When the operator turns the manual switch 5 to perform closed-circuit energy storage, it drives the drive shaft 4 to rotate, which in turn drives the worm gear 10 to rotate until the first protrusion 101 collides with the second protrusion 32. At this point, the operator can no longer turn the manual switch 5. The first protrusion 101 and the second protrusion 32 are attracted to each other, and the first protrusion 101 will not cause the drive shaft 4 to reverse due to the reaction force generated by the collision, thus completing the closed-circuit energy storage.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch, characterized in that: The device includes a first support plate (2), a second support plate (3), a motor body (11), and a motor gearbox (12). A drive shaft (4) is provided between the first support plate (2) and the second support plate (3). The motor gearbox (12) is located on the side of the first support plate (2) away from the second support plate (3). The output shaft of the motor gearbox (12) is coaxially connected to the drive shaft (4). The axis of the motor body (11) is perpendicular to the arrangement direction of the transmission components.

2. The spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch according to claim 1, characterized in that: The motor body (11) is simultaneously mounted on the first support plate (2) and the second support plate (3). Both the second support plate (3) and the first support plate (2) are provided with clearance grooves (31), which are used to avoid the motor body (11).

3. The spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch according to claim 2, characterized in that: The sidewall of the clearance groove (31) abuts against the outer wall of the motor body (11).

4. The spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch according to claim 1, characterized in that: The motor gearbox (12) is detachably connected to the first support plate (2).

5. The spring operating mechanism for a sulfur hexafluoride arc-extinguishing load switch according to claim 1, characterized in that: The end of the drive shaft (4) that protrudes from the second support plate (3) is provided with a manual switch (5), which is used by the user to drive the drive shaft (4) to rotate.

6. The spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch according to claim 5, characterized in that: The end of the drive shaft (4) that protrudes from the second support plate (3) is provided with a plug (41), and the manual switch (5) is provided with a slot (51). The slot (51) is used for the plug (41) to be inserted so as to fix the manual switch (5) on the drive shaft (4) and make the manual switch (5) mesh with the drive shaft (4) for transmission.

7. The spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch according to claim 4, characterized in that: The motor gearbox (12) is provided with a hook (7), and the first support plate (2) is provided with a mounting hole (21). The motor gearbox (12) is connected to the first support plate (2) by the hook (7) and the mounting hole (21).

8. The spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch according to claim 7, characterized in that: The hook (7) has multiple barbs (8) on its end away from the motor gearbox (12).

9. The spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch according to claim 1, characterized in that: The drive shaft (4) is provided with a spiral (42), and the second support plate (3) is provided with a worm gear (10). The worm gear (10) meshes with the drive shaft (4) for transmission. The worm gear (10) is provided with a first protrusion (101), and the second support plate (3) is provided with a second protrusion (32). The first protrusion (101) is used to abut against the second protrusion (32).

10. The spring-operated mechanism for a sulfur hexafluoride arc-extinguishing load switch according to claim 9, characterized in that: The first protrusion (101) and the second protrusion (32) are magnetic.

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