Energy storage operating mechanism of low voltage disconnecting switch

Abstract

The application provides a low-voltage isolating switch energy storage operating mechanism and relates to the field of electrical equipment, which comprises a clamping plate, a front operating part, at least a front shaft for bearing input torque and a front gear coaxially connected with the front shaft, a side operating part, at least a side shaft for bearing input torque, a side gear coaxially connected with the side shaft and a right rotating arm extending radially along the side gear, a rotating wheel part coaxially connected with the side shaft and capable of being connected with or separated from the contact of the isolating switch, a fork part comprising a right fork and a left fork, and an energy storage part comprising an energy storage spring and a spring shaft, the energy storage spring is released instantaneously after passing through the energy storage dead point position to drive the rotating wheel part to rotate rapidly. The application simultaneously has the front operating part and the side operating part, and each operating part can meet the requirement of unrelated manual operation, effectively ensures the stability of switch action and further guarantees the personal safety of the operator.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment, and more specifically, to an energy storage operating mechanism for a low-voltage disconnect switch. Background Technology

[0002] As a switching device used for voltage isolation, switching, and controlling the on / off state of small current circuits, low-voltage disconnect switches are widely used in the power and electrical equipment fields. Due to limitations imposed by usage scenarios, equipment requirements, and ease of operation, the operating mechanism of a disconnect switch is generally located on the front or side. Most existing disconnect switches do not simultaneously possess both front and side operating mechanisms. Those few that do possess both cannot meet the requirements of unauthorized manual operation: improper operation or errors by the operator often lead to deformation of the disconnect switch's opening / closing action, resulting in problems such as incomplete opening / closing or delayed opening / closing, threatening equipment safety or personal safety. Furthermore, existing disconnect switches with both front and side operating mechanisms often suffer from drawbacks such as complex structure, large size, and poor stability.

[0003] Therefore, how to ensure that the disconnecting switch has both a front operating mechanism and a side operating mechanism while meeting the requirements of unmanned operation has become a technical problem that needs to be solved. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies, and provides an energy storage operating mechanism for a low-voltage disconnect switch, which has both a front operating part and a side operating part, and each operating part can meet the requirements of unmanned operation, effectively ensuring the stability of the switch operation and thus protecting the personal safety of the operator.

[0005] This invention is achieved through the following technical solution: an energy storage operating mechanism for a low-voltage disconnector, comprising: a clamping plate; a front operating part disposed on the upper side of the clamping plate, having at least one front rotating shaft for bearing input torque and a front gear coaxially connected to the front rotating shaft; a side operating part disposed on the inner side of the clamping plate, having at least one side rotating shaft for bearing input torque, a side gear coaxially connected to the side rotating shaft, and a right rotating arm extending radially along the side gear; the front gear and the side gear can mesh with each other to transmit load or idle within a certain rotation angle; a rotating wheel part disposed on the inner side of the clamping plate, the rotating wheel part being coaxially connected to the side rotating shaft, capable of connecting or separating from the contacts of the disconnector, thereby performing closing or opening, the rotating wheel part having a left rotating arm extending radially along the rotating wheel body and... The rotating arm and the left rotating arm are at a certain angle. The shift fork section includes a right shift fork and a left shift fork. The middle part of the right shift fork is connected to one side of the clamping plate through the shift fork pivot, and the middle part of the left shift fork is connected to the clamping plate on the other side through the shift fork pivot. The upper part of the right shift fork has a sliding groove, which is slidably engaged with a protrusion on the right rotating arm. The upper part of the left shift fork also has a sliding groove, which is slidably engaged with a protrusion on the left rotating arm. The energy storage section includes an energy storage spring and a spring shaft. One end of the spring shaft is connected to the energy storage spring, and the other end of the energy storage spring is connected to the rotating arm through a first connecting rod. Both ends of the spring shaft are connected to the lower sides of the left shift fork and the right shift fork. The spring shaft is driven by the rotation of the shift fork section, which in turn stretches the energy storage spring. The energy storage spring is released instantaneously after passing the energy storage dead point position, so as to drive the rotating arm section to rotate rapidly.

[0006] In this technical solution, there is a free stroke between the front or side operation and the left and right rotating arms. After rotating a certain angle, the load is transmitted. The rotating arm drives the shift fork to rotate via a protrusion. The rotation of the shift fork drives the spring shaft to stretch the energy storage spring until the energy storage spring passes the dead point position and is actively released. The connecting rod drives the rotating wheel arm to rotate, so that the rotating wheel body can rotate on the clamp plate. During this period, the front operation mechanism and the side operation mechanism support mutual meshing and synchronous action and free stroke, so that the two operation mechanisms have the same function (unrelated to manual operation). Energy is stored by driving a pair of shift forks through the left / right rotating arms, ensuring the stability and smoothness of the energy storage process.

[0007] According to the energy storage operating mechanism of the low-voltage disconnector provided by the present invention, preferably, the first link specifically includes a front link and a rear link. One end of the front link is connected to the wheel arm, and the other end is connected to the rear link. One end of the rear link is connected to the front link, and the other end is connected to the fork shaft of the right shift fork.

[0008] The energy storage operating mechanism of the low-voltage disconnector provided by the present invention preferably further includes: a second connecting rod, one end of which is rotatably connected to the clamping plate, and the other end of which is connected to the free end of the energy storage spring.

[0009] In this technical solution, the second connecting rod is connected to the clamping plate through a rotating shaft, which allows it to rotate and further ensures the smoothness and stability of the transmission process.

[0010] According to the energy storage operating mechanism of the low-voltage disconnect switch provided by the present invention, preferably, the clamping plate includes a left clamping plate and a right clamping plate, the two clamping plates are fixedly connected by a plurality of positioning pins to form a top circular hole for connecting the front operating part so that the front rotating shaft can rotate in the top circular hole, and each side clamping plate has a side circular hole corresponding to the side operating part and the rotating wheel part so that the side operating part and the rotating wheel part can rotate in the hole.

[0011] According to the energy storage operating mechanism of the low-voltage disconnector provided by the present invention, preferably, both the front gear and the side gear have toothless portions with the same period, and the toothed portions of the front gear and the toothed portions of the side gear can mesh perpendicularly.

[0012] The beneficial effects achieved by this invention include at least the following: the overall volume of the disconnecting switch is not significantly increased while having both a front operating mechanism and a side operating mechanism; the front operating mechanism and the side operating mechanism operate synchronously, both of which meet the requirements of unrestricted human operation; the structure is simple and stable, with a low failure rate; the opening or closing action is rapid and not restricted by the operator's technical actions, effectively ensuring equipment safety and personal safety. Attached Figure Description

[0013] Figure 1 A schematic diagram of the right side structure of the energy storage operating mechanism of a low-voltage disconnector according to an embodiment of the present invention is shown.

[0014] Figure 2 A longitudinal cross-sectional view of the energy storage operating mechanism of a low-voltage disconnector according to an embodiment of the present invention is shown.

[0015] Figure 3 A schematic diagram of the front structure of the energy storage operating mechanism of a low-voltage disconnector according to an embodiment of the present invention is shown.

[0016] Figure 4 A schematic diagram of the rear structure of the energy storage operating mechanism of a low-voltage disconnector according to an embodiment of the present invention is shown.

[0017] Figure 5 A schematic diagram of the internal structure of the clamping plate of the energy storage operating mechanism of a low-voltage disconnector according to an embodiment of the present invention is shown.

[0018] Figure 6 An enlarged structural view of the rotating portion of the energy storage operating mechanism of a low-voltage disconnector according to an embodiment of the present invention is shown.

[0019] Figure 7An enlarged view of the side operating section of the energy storage operating mechanism of a low-voltage disconnector according to an embodiment of the present invention is shown.

[0020] Figure 8 A schematic diagram of the clamping plate structure of the energy storage operating mechanism of a low-voltage disconnector according to an embodiment of the present invention is shown. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. Those skilled in the art will understand the specific meaning of the above terms in this invention through specific circumstances.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this invention provides an energy storage operating mechanism for a low-voltage disconnector, comprising: a clamping plate 1; a front operating part disposed on the upper side of the clamping plate, having at least one front rotating shaft 2 for bearing input torque and a front gear 3 coaxially connected to the front rotating shaft; a side operating part disposed on the inner side of the clamping plate, having at least one side rotating shaft 4 for bearing input torque, a side gear 5 coaxially connected to the side rotating shaft, and a right rotating arm 6 extending radially along the side gear; the front gear and the side gear can mesh with each other to transmit load or idle within a certain rotation angle; a rotating wheel part disposed on the inner side of the clamping plate, coaxially connected to the side rotating shaft, capable of connecting or separating from the contacts of the disconnector, thereby performing closing or opening, the rotating wheel part having a rotating wheel body (see details) Figure 6The left rotating arm 7 and the wheel arm 8 extend radially, with a certain angle between them; the shift fork part includes a right shift fork 9 and a left shift fork 10. The middle part of the right shift fork is connected to one side of the clamping plate through the shift fork pivot 11, and the middle part of the left shift fork is connected to the clamping plate on the other side through the shift fork pivot 11. The upper part of the right shift fork has a sliding groove 12, which is slidably connected to the protrusion 13 on the right rotating arm. The upper part of the left shift fork has a sliding groove, which is slidably connected to the protrusion on the left rotating arm; the energy storage part includes an energy storage spring 14 and a spring shaft 15. The spring shaft is connected to one end of the energy storage spring, and the other end of the energy storage spring is connected to the wheel arm through the first connecting rod 16. The two ends of the spring shaft are connected to the lower side of the left shift fork and the lower side of the right shift fork. The spring shaft is driven by the rotation of the shift fork part, thereby stretching the energy storage spring. The energy storage spring is released instantaneously after passing the energy storage dead point position, so as to drive the wheel part to rotate rapidly.

[0024] In this embodiment, during the closing operation, the front gear drives the side gear to rotate clockwise. After the side gear rotates a certain angle, it drives the right rotating arm to rotate. The right rotating arm then drives the left rotating arm to rotate the shift fork. The left and right shift forks have the same structure and move synchronously. The spring shaft rotates with the shift fork, and the spring on the spring shaft is stretched during rotation. When the shift fork passes the dead center of the mechanism, the spring drives the first connecting rod to release instantaneously. The first connecting rod drives the rotating wheel arm to rotate (the rotating wheel rotates on the clamping plate). The rotating wheel body connects with the contact, thus realizing the closing operation. During this process, the left rotating arm rotates in the rotating part, the right rotating arm rotates in the side operating part, the side gear rotates on the clamping plate, the front gear rotates in the round hole on the upper surface of the clamping plate, and the shift fork rotates on the shift fork shaft, which is fixed to the clamping plate. During the opening operation, the front gear drives the side gear to rotate counterclockwise, and the remaining actions are the same.

[0025] like Figure 5 As shown, according to the above embodiment, preferably, the first link specifically includes a front link and a rear link. One end of the front link is connected to the wheel arm, and the other end is connected to the rear link. One end of the rear link is connected to the front link, and the other end is connected to the shift fork shaft of the right shift fork.

[0026] like Figure 4 As shown, according to the above embodiment, preferably, it further includes: a second connecting rod 17, one end of which is rotatably connected to the clamping plate, and the other end of which is connected to the upper part of the energy storage spring.

[0027] In this embodiment, the first link and the second link rotate synchronously, and during the rotation, they can jointly stretch the free end of the energy storage spring.

[0028] like Figure 6 and Figure 7As shown, according to the above embodiment, preferably, both the front gear and the side gear have toothless portions with the same period, and the toothed portions of the front gear and the toothed portions of the side gear can mesh perpendicularly.

[0029] like Figure 8 As shown, according to the above embodiment, preferably, the clamping plate includes a left clamping plate and a right clamping plate. The two clamping plates can be fixedly connected by multiple positioning pins to form a top circular hole for connecting the front operating part so that the front rotating shaft can rotate in the top circular hole. Each side clamping plate has a side circular hole corresponding to the side operating part and the rotating wheel part so that the side operating part and the rotating wheel part can rotate in the hole.

[0030] According to the above embodiments of the present invention, in the energy storage operating mechanism of the low-voltage disconnecting switch disclosed in the present invention, there is a free travel between the forward operation or side operation and the left and right rotating arms. After rotating a certain angle, the load is transmitted. The rotating arm will continue to rotate the shift fork until the energy storage spring passes the dead point position and is actively released. At the same time, the first link, the second link, and the rotating wheel arm rotate together, so that the rotating wheel body can quickly rotate to the predetermined position and connect with the switch contacts. Whether it is a forward operation or a side operation, it can meet the requirements of unrestricted manual operation and ensure the personal safety of the operator when opening and closing the switch.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An energy storage operating mechanism for a low-voltage disconnector, characterized in that, include: plywood; The front operating part is disposed on the upper side of the clamping plate and has at least one front rotating shaft for bearing input torque and a front gear coaxially connected to the front rotating shaft. The side operating part is provided on the inner side of the clamp plate and has at least a side rotating shaft for bearing input torque, a side gear coaxially connected to the side rotating shaft, and a right rotating arm extending radially along the side gear. The front gear and the side gear can mesh with each other to transmit load or idle within a certain rotation angle; Both the front gear and the side gear have toothless portions with the same period, and the toothed portions of the front gear and the toothed portions of the side gear can mesh perpendicularly. The rotating wheel is disposed on the inner side of the clamp plate. The rotating wheel is coaxially connected to the side rotating shaft and can be connected or separated from the contacts of the disconnecting switch to perform closing or opening. The rotating wheel has a left rotating arm and a rotating wheel arm extending radially along the rotating wheel body. There is a certain angle between the left rotating arm and the rotating wheel arm. The shift fork includes a right shift fork and a left shift fork. The middle part of the right shift fork is connected to one side of the clamping plate via a shift fork pivot. The middle part of the left shift fork is connected to the clamping plate on the other side via a shift fork pivot. The upper part of the right shift fork has a sliding groove, which is slidably engaged with a protrusion on the right rotating arm. The upper part of the left shift fork also has a sliding groove, which is slidably engaged with a protrusion on the left rotating arm. The energy storage unit includes an energy storage spring and a spring shaft. The spring shaft is connected to one end of the energy storage spring, and the other end of the energy storage spring is connected to the rotating wheel arm via a first connecting rod. Both ends of the spring shaft are connected to the lower side of the left shift fork and the lower side of the right shift fork. The spring shaft is driven by the rotation of the shift fork, thereby stretching the energy storage spring. The energy storage spring is released instantaneously after passing the energy storage dead point position, so as to drive the rotating wheel to rotate rapidly.

2. The energy storage operating mechanism of the low-voltage disconnector according to claim 1, characterized in that, The first connecting rod specifically includes a front connecting rod and a rear connecting rod. One end of the front connecting rod is connected to the wheel arm, and the other end is connected to the rear connecting rod. One end of the rear connecting rod is connected to the front connecting rod, and the other end is connected to the fork shaft of the right shift fork.

3. The energy storage operating mechanism of the low-voltage disconnector according to claim 1, characterized in that, Also includes: The second link has one end rotatably connected to the clamping plate and the other end connected to the energy storage spring.

4. The energy storage operating mechanism of the low-voltage disconnector according to claim 1, characterized in that, The clamping plate includes a left clamping plate and a right clamping plate. The two clamping plates are fixedly connected by multiple positioning pins to form a top circular hole for connecting the front operating part so that the front rotating shaft can rotate in the top circular hole. Each side clamping plate has a side circular hole corresponding to the side operating part and the rotating wheel part so that the side operating part and the rotating wheel part can rotate in the hole.

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