Transmission mechanism and isolating switch

Abstract

The utility model belongs to the field of disconnecting switches, and particularly relates to a transmission mechanism and a disconnecting switch, comprising a transmission assembly, the transmission assembly is connected between a lower connecting rod of an operating mechanism and a first main shaft and a second main shaft of a switch body, and the transmission assembly is configured to transmit the driving force of the operating mechanism to the first main shaft and the second main shaft of the switch body. The transmission assembly comprises a driving gear, an upper transmission gear, a lower transmission gear and a connecting rod, the driving gear is rotationally arranged on a mechanism frame of the operating mechanism and is in linkage fit with the lower connecting rod, the upper transmission gear and the lower transmission gear are arranged on a first main shaft and a second main shaft of the switch body in a linkage mode respectively, and the connecting rod is connected between the upper transmission gear and the lower transmission gear; the driving gear is meshed with the upper transmission gear; the transmission mechanism adopts a gear transmission structure design, so that the distance between the transmission point of the operating mechanism and the first main shaft of the switch body is effectively shortened, and the design requirement of miniaturization of the isolating switch can be met.

Description

Technical Field

[0001] This utility model belongs to the field of disconnecting switch technology, specifically relating to a transmission mechanism and a disconnecting switch. Background Technology

[0002] A disconnecting switch is a device that isolates a de-energized section from a energized section, creating a clear disconnect point to isolate faulty equipment or facilitate maintenance during power outages. When electrical equipment is under maintenance during a power outage, isolating the equipment from the power source and creating a clear disconnect point prevents safety accidents.

[0003] In the existing technology, the operating mechanism of the disconnecting switch is connected to the switch body by a linkage transmission. The distance between the transmission point of the operating mechanism and the main shaft of the switch body is relatively far, and the linkage occupies a large transmission space, which cannot meet the development trend of miniaturization of disconnecting switches. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a transmission mechanism and disconnecting switch that can meet the design requirements for miniaturization of disconnecting switches.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A transmission mechanism includes a transmission component, which is connected between the lower connecting rod of the operating mechanism and the first and second main shafts of the switch body. The transmission component is configured to transmit the driving force of the operating mechanism to the first and second main shafts of the switch body, so that the switch body opens or closes. The transmission component includes a drive gear, an upper transmission gear, a lower transmission gear, and a connecting rod. The drive gear is rotatably mounted on the frame of the operating mechanism and is linked with the lower connecting rod. The upper and lower transmission gears are respectively linked on the first and second main shafts of the switch body. The connecting rod is connected between the upper and lower transmission gears, and the drive gear meshes with the upper transmission gear.

[0006] In some embodiments, the drive gear has a section of arc-shaped teeth, and the upper transmission gear has transmission teeth that mesh with the arc-shaped teeth.

[0007] In some embodiments, the drive gear has a drive arm that engages with the lower link of the operating mechanism, and a drive shaft is connected between the drive arm and the lower link.

[0008] In some embodiments, the drive gear is provided with a rotating shaft, and the two ends of the rotating shaft are respectively rotatably connected to the two side plates of the mechanism frame.

[0009] In some embodiments, the upper drive gear and the lower drive gear are respectively provided with a plurality of positioning grooves arranged in a circular array, and the first spindle and the second spindle are respectively provided with a plurality of limiting blocks that cooperate with the plurality of positioning grooves. The plurality of limiting blocks are respectively engaged in the plurality of positioning grooves, and constitute a linkage between the first spindle and the second spindle and the upper drive gear and the lower drive gear, respectively.

[0010] In some embodiments, the upper transmission gear and the lower transmission gear are respectively provided with an upper transmission arm and a lower transmission arm connected to both ends of the connecting rod.

[0011] In some embodiments, the upper transmission arm, the lower transmission arm, and the connecting rod are respectively connected to transmission shafts at both ends.

[0012] In some embodiments, the connecting rod includes two transmission plates distributed on both sides of the upper transmission arm and the lower transmission arm, with the two ends of the two transmission plates respectively connected to the two ends of the transmission shaft.

[0013] A disconnecting switch includes an operating mechanism and at least one-pole switch body, wherein the operating mechanism and the switch body are connected by the transmission mechanism.

[0014] In some embodiments, the switch bodies of the multi-pole switch are stacked along the axial direction of the first main shaft and the second main shaft, and a protective frame is provided inside the switch body of the multi-pole switch, which surrounds the transmission component. A receiving cavity for placing the transmission component is formed between the protective frame and the outer shell of the switch body.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a transmission mechanism and a disconnecting switch. The transmission mechanism adopts a gear transmission structure design, which makes the transmission more stable and reliable, has a long service life, small size, and high transmission efficiency. It can also effectively shorten the distance between the transmission point of the operating mechanism and the first main shaft of the switch body, thus meeting the design requirements for miniaturization of the disconnecting switch. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a perspective view of the isolating switch according to an embodiment of the present utility model;

[0018] Figure 2 This is an internal structural diagram of the disconnecting switch according to an embodiment of the present utility model;

[0019] Figure 3 This is an assembly drawing of the operating mechanism and transmission components according to an embodiment of the present utility model;

[0020] Figure 4 This is a perspective view of the transmission component according to an embodiment of the present utility model. Detailed Implementation

[0021] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0023] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0025] like Figure 2-4As shown, a transmission mechanism includes a transmission assembly 10. The transmission assembly 10 is connected between the lower connecting rod 21 of the operating mechanism 20 and the first main shaft 31 and the second main shaft 32 of the switch body 30. The transmission assembly 10 is configured to transmit the driving force of the operating mechanism 20 to the first main shaft 31 and the second main shaft 32 of the switch body 30, so that the switch body 30 opens or closes. The transmission assembly 10 includes a drive gear 11, an upper transmission gear 12, a lower transmission gear 13, and a connecting rod 14. The drive gear 11 is rotatably mounted on the mechanism frame 22 of the operating mechanism 20 and is linked with the lower connecting rod 21. The upper transmission gear 12 and the lower transmission gear 13 are respectively linked on the first main shaft 31 and the second main shaft 32 of the switch body 30. The connecting rod 14 is connected between the upper transmission gear 12 and the lower transmission gear 13. The drive gear 11 meshes with the upper transmission gear 12. The drive gear 11 has a section of arc-shaped teeth 111, and the upper transmission gear 12 has transmission teeth 120 that mesh with the arc-shaped teeth 111. The meshing of the arc-shaped teeth with the transmission teeth of the upper transmission gear ensures the reliability of the transmission between the drive gear and the three transmission gears. The drive gear 11 has a drive arm 112 that is linked to the lower connecting rod 21 of the operating mechanism 20, and a drive shaft 113 connects the drive arm 112 and the lower connecting rod 21. The drive gear is connected to the lower connecting rod via the drive arm, ensuring the reliability of the transmission between the drive gear and the lower connecting rod. A rotating shaft 114 is provided on the drive gear 11, with both ends of the rotating shaft 114 rotatably connected to two side plates 221 of the mechanism frame 22. The drive gear is connected to the two side plates of the operating mechanism via the rotating shaft, facilitating the assembly of the drive gear with the mechanism frame and ensuring reliable rotation of the drive gear on the mechanism frame.

[0026] like Figure 3 and 4As shown, the upper transmission gear 12 and the lower transmission gear 13 are each provided with multiple positioning grooves 100 arranged in a circular array. The first spindle 31 and the second spindle 32 are each provided with multiple limiting blocks 300 that cooperate with the multiple positioning grooves 100. The multiple limiting blocks 300 are respectively engaged in the multiple positioning grooves 100, and constitute the linkage between the first spindle 31 and the second spindle 32 and the upper transmission gear 12 and the lower transmission gear 13, respectively. The first spindle and the second spindle are respectively engaged in the positioning grooves of the upper transmission gear and the lower transmission gear through the multiple limiting blocks, which facilitates the assembly of the first spindle and the second spindle with the upper transmission gear and the lower transmission gear, respectively, and ensures more reliable transmission between the first spindle and the second spindle and the upper transmission gear and the lower transmission gear, respectively. The upper transmission gear 12 and the lower transmission gear 13 are respectively provided with upper transmission arms 121 and lower transmission arms 131 that are connected to both ends of the connecting rod 14. The upper and lower transmission gears are connected to both ends of the connecting rod via upper and lower transmission arms, respectively, facilitating the assembly of the connecting rod with the upper and lower transmission gears. The upper transmission arm 121 and lower transmission arm 131 are connected to the transmission shafts 101 at both ends of the connecting rod 14. The connecting rod 14 includes two transmission plates 141 distributed on both sides of the upper transmission arm 121 and lower transmission arm 131, with both ends of the two transmission plates 141 connected to the two ends of the transmission shafts 101. The connecting rod adopts a double transmission plate structure design, resulting in higher strength and higher transmission reliability.

[0027] like Figure 1 As shown in Figure 2, a disconnecting switch includes an operating mechanism 20 and at least one-pole switch body 30. A transmission mechanism connects the operating mechanism 20 and the switch body 30. The operating mechanism 20 drives the first main shaft 31 and the second main shaft 31 of the switch body 30 to operate, causing the switch body 30 to open or close. The multi-pole switch body 30 is stacked along the axial direction of the first main shaft 31 and the second main shaft 32. A protective frame 33 is provided inside the multi-pole switch body 30, surrounding the transmission assembly 10. A receiving cavity 3000 for placing the transmission assembly 10 is formed between the protective frame 33 and the outer shell 34 of the switch body 30. Placing the transmission assembly inside the receiving cavity avoids exposing the transmission assembly to the switch body, resulting in better protection and facilitating the assembly of the transmission assembly with the switch body, thus increasing assembly efficiency.

[0028] This utility model provides a transmission mechanism and a disconnecting switch. The transmission mechanism adopts a gear transmission structure design, which makes the transmission more stable and reliable, has a long service life, small size, and high transmission efficiency. It can also effectively shorten the distance between the transmission point of the operating mechanism and the first main shaft of the switch body, thus meeting the design requirements for miniaturization of the disconnecting switch.

[0029] The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A transmission mechanism, characterized in that: The device includes a transmission assembly connected between the lower connecting rod of the operating mechanism and the first and second main shafts of the switch body. The transmission assembly is configured to transmit the driving force of the operating mechanism to the first and second main shafts of the switch body to open or close the switch body. The transmission assembly includes a drive gear, an upper transmission gear, a lower transmission gear, and a connecting rod. The drive gear is rotatably mounted on the frame of the operating mechanism and is linked with the lower connecting rod. The upper and lower transmission gears are respectively linked on the first and second main shafts of the switch body. The connecting rod connects the upper and lower transmission gears, and the drive gear meshes with the upper transmission gear.

2. The transmission mechanism according to claim 1, characterized in that: The drive gear has a section of arc-shaped teeth, and the upper transmission gear has transmission teeth that mesh with the arc-shaped teeth.

3. The transmission mechanism according to claim 2, characterized in that: The drive gear has a drive arm that is linked with the lower link of the operating mechanism, and a drive shaft is connected between the drive arm and the lower link.

4. The transmission mechanism according to claim 3, characterized in that: The drive gear is equipped with a rotating shaft, and the two ends of the rotating shaft are respectively rotatably connected to the two side plates of the mechanism frame.

5. The transmission mechanism according to claim 1, characterized in that: The upper and lower transmission gears are respectively provided with multiple positioning grooves arranged in a circular array. The first and second main shafts are respectively provided with multiple limiting blocks that cooperate with the multiple positioning grooves. The multiple limiting blocks are respectively engaged in the multiple positioning grooves, and form a linkage between the first and second main shafts and the upper and lower transmission gears, respectively.

6. The transmission mechanism according to claim 5, characterized in that: The upper and lower transmission gears are respectively provided with upper and lower transmission arms that are connected to both ends of the connecting rod.

7. The transmission mechanism according to claim 6, characterized in that: The upper drive arm, lower drive arm, and connecting rod are each connected to a drive shaft at both ends.

8. The transmission mechanism according to claim 7, characterized in that: The connecting rod includes two transmission plates distributed on both sides of the upper and lower transmission arms, with the two ends of the two transmission plates respectively connected to the two ends of the transmission shaft.

9. A disconnecting switch, characterized in that: It includes an operating mechanism and at least one-pole switch body, wherein the operating mechanism and the switch body are connected by a transmission mechanism as described in any one of claims 1-8.

10. The disconnecting switch according to claim 9, characterized in that: The switch bodies of the multi-pole type are stacked along the axial direction of the first main shaft and the second main shaft. A protective frame is provided inside the switch body of the multi-pole type, which surrounds the transmission component. A receiving cavity for placing the transmission component is formed between the protective frame and the outer shell of the switch body.

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