A transmission mechanism for a fusion switch

Abstract

This utility model relates to a transmission mechanism for a fusion switch, comprising: a pre-charge linkage component, which is coaxially arranged and rotates relative to a pre-charge transmission disk, with a fourth free travel distance between the pre-charge linkage component and the pre-charge transmission disk; a main charge linkage component, which is coaxially arranged and rotates relative to the main charge transmission disk, with a third free travel distance between the main charge linkage component and the main charge transmission disk; a main charge rotating shaft, which is coaxially arranged and rotates relative to the main charge linkage component, with a first free travel distance between the main charge rotating shaft and the main charge linkage component; and a linkage disk mechanism, through which the main charge rotating shaft is connected to the pre-charge linkage component. The beneficial effects of this utility model are: it enables the pre-charge circuit to open / close before the main charge circuit to open / close, ensuring the sequence and timeliness of the actions, and improving the safety of the fusion switch.

Description

Technical Field

[0001] This utility model relates to the field of fusion switch technology, and in particular to a transmission mechanism for a fusion switch. Background Technology

[0002] As a key electrical device integrating the main circuit switching and pre-charging functions, the integrated switch is used to first charge the bus capacitor through the pre-charging switch when the system is powered on, and then close the main charging switch after the voltage is balanced, thereby avoiding excessive inrush current and protecting circuit components.

[0003] However, existing integrated switches typically use two independent drive mechanisms to control the on / off state of the main charging circuit and the pre-charging circuit respectively. This results in a complex structure, a large number of parts, a large space occupation, and is not conducive to early assembly and later maintenance. Moreover, it is difficult for the two drive mechanisms to coordinate and link efficiently, and the linkage response speed is slow. If there is a deviation in the action sequence between the pre-charging circuit and the main charging circuit, the circuit will be turned on or off too early or too late, which will affect the safety of the system. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a transmission mechanism for a fusion switch to solve the above problems.

[0005] The technical solution of this utility model is implemented as follows: a transmission mechanism for a fusion switch includes a pre-charge transmission disk disposed inside the housing and connected to the pre-charge circuit for switching the open / closed state of the pre-charge circuit, and a main charging transmission disk connected to the main charging circuit for switching the open / closed state of the main charging circuit, and further includes:

[0006] A pre-charge linkage component is coaxially arranged with the pre-charge transmission disk and rotates relative to it. A fourth empty stroke is provided between the pre-charge linkage component and the pre-charge transmission disk. When the pre-charge linkage component rotates relative to the pre-charge transmission disk and completes the fourth empty stroke, the pre-charge linkage component drives the pre-charge transmission disk to rotate.

[0007] The main charging linkage component is coaxially arranged with the main charging transmission disk and rotates relative to it. A third free stroke is provided between the main charging linkage component and the main charging transmission disk. When the main charging linkage component rotates relative to the main charging transmission disk and completes the third free stroke, the main charging linkage component drives the main charging transmission disk to rotate.

[0008] The main charging shaft is coaxially arranged with the main charging linkage and rotates relative to it. There is a first free stroke between the main charging shaft and the main charging linkage. When the main charging shaft rotates relative to the main charging linkage and completes the first free stroke, the main charging shaft drives the main charging linkage to rotate.

[0009] The linkage mechanism connects the main charging shaft to the pre-charging linkage component, so that when the main charging shaft moves, it first drives the pre-charging linkage component to open / close, and then drives the main charging linkage component to open / close.

[0010] The present invention is further configured such that the linkage mechanism includes:

[0011] A pre-charge turntable, wherein the pre-charge turntable and the pre-charge linkage are coaxially arranged and rotate synchronously;

[0012] The main charging turntable is coaxially arranged with the main charging shaft and rotates relative to it. A second free stroke is provided between the main charging turntable and the main charging shaft. When the main charging shaft rotates relative to the main charging turntable and completes the second free stroke, the main charging shaft drives the main charging turntable to rotate.

[0013] The main charging turntable and the pre-charging turntable have a fifth empty stroke. After the main charging turntable completes the fifth empty stroke, it contacts the pre-charging turntable and drives the pre-charging turntable to rotate. When the main charging turntable completes the fifth empty stroke, the main charging shaft has not yet completed the first empty stroke.

[0014] The present invention is further configured such that: the pre-charge linkage component is provided with a first connecting pin connected to the pre-charge transmission disk, the pre-charge transmission disk is provided with a first connecting groove that cooperates with the first connecting pin, the fourth free stroke is provided as the moving path of the first connecting pin in the first connecting groove, and the pre-charge linkage component is fixedly connected to the pre-charge turntable through the first connecting pin.

[0015] The main charging linkage component is provided with a second connecting pin that connects to the main charging transmission disc. The main charging transmission disc is provided with a second connecting groove that cooperates with the second connecting pin. The third free stroke is set as the movement path of the second connecting pin in the second connecting groove.

[0016] One end of the main charging shaft is provided with a third connecting groove that cooperates with the second connecting pin, and the first empty stroke is set as the movement path of the second connecting pin in the third connecting groove.

[0017] The present invention is further configured such that: a lug protrudes from the outer wall of the main charging shaft, and a central hole that mates with the lug is opened at the center of the main charging turntable; the second idle stroke is configured as the moving path of the lug within the central hole.

[0018] The main charging turntable has protruding protrusions, and the pre-charging turntable has a strip-shaped opening. One end of the strip-shaped opening extends to the side wall of the pre-charging turntable and has an opening for the protrusion to enter. When the pre-charging drive disc is in the open state, the opening of the strip-shaped opening is located on the moving path of the protrusion when the main charging turntable rotates. This moving path is set as the fifth idle stroke. The main charging turntable drives the pre-charging turntable to rotate through the cooperation of the protrusion and the strip-shaped opening.

[0019] The present invention is further configured to include an energy storage mechanism, wherein multiple energy storage mechanisms are disposed between the first connecting pin and the outer casing and between the second connecting pin and the outer casing, and the energy storage mechanism includes:

[0020] A spring seat, which is rotatably connected to the housing via a connecting shaft;

[0021] A spring bracket, one end of which is hinged to a first connecting pin or a second connecting pin, and the other end of which has an oblong hole that is movably connected to a connecting shaft. A storage spring is fitted on the spring bracket, one end of which abuts against a spring seat and the other end is connected to the spring bracket.

[0022] By adopting the above technical solution, when the main charging shaft rotates, it first completes the first empty stroke, driving the main charging disc through the fifth empty stroke. When the protrusion enters the strip-shaped opening, it drives the pre-charging disc to rotate, causing the energy storage spring on the pre-charging linkage to be compressed and stored. At the same time, the pre-charging linkage completes the fourth empty stroke. When the energy storage mechanism on the pre-charging linkage reaches the dead point, the pre-charging linkage completes the fourth empty stroke, and the main charging shaft completes the first empty stroke. After passing the dead point, the energy storage spring releases energy, pushing the pre-charging linkage to rotate rapidly, realizing the rapid operation of the pre-charging circuit. The system performs a rapid closing action; then, through the continued rotation of the main charging shaft, the main charging turntable drives the main charging linkage to rotate, causing the energy storage spring on the main charging linkage to be compressed and stored. At the same time, as the energy storage mechanism on the main charging linkage passes the dead point after the third idle stroke, the energy storage spring releases energy, pushing the main charging linkage to rotate rapidly, thus realizing the rapid closing action of the main charging circuit. This achieves the pre-charging circuit opening / closing action first, followed by the main charging circuit opening / closing action, ensuring the sequence and timeliness of the actions and improving the safety of the fusion switch. Attached Figure Description

[0023] 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, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0025] Figure 2 This is a schematic diagram of a partial structure of the present invention. Figure 1 ;

[0026] Figure 3This is a schematic diagram of a partial structure of the present invention. Figure 2 ;

[0027] Figure 4 This is a schematic diagram of the structural operation of this utility model when it is in the open state (when the protrusion has not entered the strip opening);

[0028] Figure 5 This is a schematic diagram of the structural operation of this utility model when it is in the open state (after the protrusion enters the strip opening);

[0029] Figure 6 This is a schematic diagram of the structure of this utility model when it is in the dead point state of the precharge circuit;

[0030] Figure 7 This is a schematic diagram of the structure of this utility model when it is in the dead state of the main charging circuit (the pre-charging circuit has been closed).

[0031] Figure 8 This is a schematic diagram of the structural operation of the present invention when it is in the closed state. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1-8 As shown, this utility model discloses a transmission mechanism for a fusion switch, including a pre-charge transmission disk 20 disposed inside the housing 1 and connected to the pre-charge circuit for switching the open / closed state of the pre-charge circuit, and a main charging transmission disk 30 connected to the main charging circuit for switching the open / closed state of the main charging circuit, and further including:

[0034] A pre-charge linkage 21 is coaxially arranged with and rotates relative to the pre-charge transmission disk 20. A fourth free stroke is provided between the pre-charge linkage 21 and the pre-charge transmission disk 20. When the pre-charge linkage 21 rotates relative to the pre-charge transmission disk 20 and completes the fourth free stroke, the pre-charge linkage 21 drives the pre-charge transmission disk 20 to rotate. The pre-charge linkage 21 is provided with a first connecting pin 210 that connects to the pre-charge transmission disk 20. The pre-charge transmission disk 20 is provided with a first connecting groove 200 that cooperates with the first connecting pin 210. The fourth free stroke is the movement path of the first connecting pin 210 within the first connecting groove 200. The pre-charge linkage 21 is fixedly connected to the pre-charge turntable 22 through the first connecting pin 210.

[0035] The main charging linkage 31 is coaxially arranged with the main charging transmission disk 30 and rotates relative to it. A third free stroke is provided between the main charging linkage 31 and the main charging transmission disk 30. When the main charging linkage 31 rotates relative to the main charging transmission disk 30 and completes the third free stroke, the main charging linkage 31 drives the main charging transmission disk 30 to rotate. The main charging linkage 31 is provided with a second connecting pin 310 that connects to the main charging transmission disk 30. The main charging transmission disk 30 is provided with a second connecting groove 300 that cooperates with the second connecting pin 310. The third free stroke is the movement path of the second connecting pin 310 within the second connecting groove 300.

[0036] The main charging shaft 4 is coaxially arranged with the main charging linkage 31 and rotates relative to it. A first free stroke is provided between the main charging shaft 4 and the main charging linkage 31. When the main charging shaft 4 rotates relative to the main charging linkage 31 and completes the first free stroke, the main charging shaft 4 drives the main charging linkage 31 to rotate. A third connecting groove 40 is provided on one end of the main charging shaft 4 to cooperate with the second connecting pin 310. The first free stroke is the movement path of the second connecting pin 310 in the third connecting groove 40.

[0037] The linkage mechanism connects the main charging shaft 4 to the pre-charging linkage component 21, so that when the main charging shaft 4 moves, it first drives the pre-charging linkage component 21 to perform opening / closing actions, and then drives the main charging linkage component 31 to perform opening / closing actions.

[0038] In this embodiment of the utility model, the linkage mechanism includes:

[0039] Pre-charge turntable 22, which is coaxially arranged with pre-charge linkage 21 and rotates synchronously;

[0040] The main charging turntable 32 is coaxially arranged with the main charging shaft 4 and rotates relative to it. A second empty stroke is provided between the main charging turntable 32 and the main charging shaft 4. When the main charging shaft 4 rotates relative to the main charging turntable 32 and completes the second empty stroke, the main charging shaft 4 drives the main charging turntable 32 to rotate.

[0041] The main charging turntable 32 and the pre-charging turntable 22 are provided with a fifth empty stroke. After the main charging turntable 32 completes the fifth empty stroke, it will contact the pre-charging turntable 22 and drive the pre-charging turntable 22 to rotate. When the main charging turntable 32 completes the fifth empty stroke, the main charging shaft 4 has not yet completed the first empty stroke.

[0042] In this embodiment of the utility model, a lug 41 protrudes from the outer wall of the main charging shaft 4, and a central hole 320 that mates with the lug 41 is opened in the center of the main charging turntable 32. The second empty stroke is the movement path of the lug 41 within the central hole 320.

[0043] The main charging turntable 32 has a protruding protrusion 321, and the pre-charging turntable 22 has a strip-shaped opening 220. One end of the strip-shaped opening 220 extends to the side wall of the pre-charging turntable 22 and has an opening for the protrusion 321 to enter. When the pre-charging transmission disc 20 is in the open state, the opening of the strip-shaped opening 220 is located on the moving path of the protrusion 321 when the main charging turntable 32 rotates. This moving path is set as the fifth empty stroke. The main charging turntable 32 drives the pre-charging turntable 22 to rotate through the cooperation of the protrusion 321 and the strip-shaped opening 220.

[0044] In this embodiment of the utility model, an energy storage mechanism 5 is further included. Multiple energy storage mechanisms 5 are disposed between the first connecting pin 210 and the outer casing 1, and between the second connecting pin 310 and the outer casing 1. Each energy storage mechanism 5 includes:

[0045] Spring seat 50, which is rotatably connected to the housing 1 via connecting shaft 51;

[0046] A spring bracket 52 is provided, one end of which is hinged to a first connecting pin 210 or a second connecting pin 310. The other end of the spring bracket 52 is provided with an oblong hole 520 that is movably connected to a connecting shaft 51. A storage spring 53 is sleeved on the spring bracket 52. One end of the storage spring 53 abuts against a spring seat 50, and the other end is connected to the spring bracket 52.

[0047] By adopting the above technical solution, when the main charging shaft 4 rotates, the main charging shaft 4 first completes the first empty stroke, driving the main charging turntable 32 through the fifth empty stroke. When the protrusion 321 enters the strip-shaped opening 220, it drives the pre-charging turntable 22 to rotate, causing the energy storage mechanism 5 on the pre-charging linkage 21 to be compressed and stored. At the same time, the pre-charging linkage 21 completes the fourth empty stroke. When the energy storage mechanism 5 on the pre-charging linkage 21 reaches the dead point, the pre-charging linkage 21 completes the fourth empty stroke, and the main charging shaft 4 completes the first empty stroke. After passing the dead point, the energy storage spring 53 releases energy, pushing the pre-charging linkage 21 to rotate rapidly, realizing the pre-charging... The charging circuit is quickly closed; then, through the continued rotation of the main charging shaft 4, the main charging turntable 32 drives the main charging linkage 31 to rotate, so that the energy storage mechanism 5 on the main charging linkage 31 is compressed and stored. At the same time, the main charging linkage 31 passes through the third free stroke. When the energy storage mechanism 5 on the main charging linkage 31 passes the dead point, the energy storage spring 53 releases energy and pushes the main charging linkage 31 to rotate quickly, realizing the rapid closing action of the main charging circuit. Thus, the opening / closing action of the pre-charging circuit is performed first, and then the opening / closing action of the main charging circuit is performed, ensuring the sequence and timeliness of the actions and improving the safety of the fusion switch.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A transmission mechanism for a fusion switch, comprising a pre-charge transmission disk (20) disposed within a housing (1) and connected to a pre-charge circuit for switching the open / closed state of the pre-charge circuit, and a main charge transmission disk (30) connected to a main charge circuit for switching the open / closed state of the main charge circuit, characterized in that, Also includes: A pre-charge linkage component (21) is coaxially arranged with the pre-charge transmission disk (20) and rotates relative to it. A fourth empty stroke is provided between the pre-charge linkage component (21) and the pre-charge transmission disk (20). When the pre-charge linkage component (21) rotates relative to the pre-charge transmission disk (20) and completes the fourth empty stroke, the pre-charge linkage component (21) drives the pre-charge transmission disk (20) to rotate. The main charging linkage component (31) is coaxially arranged with the main charging transmission disk (30) and rotates relative to it. A third free stroke is provided between the main charging linkage component (31) and the main charging transmission disk (30). When the main charging linkage component (31) rotates relative to the main charging transmission disk (30) and completes the third free stroke, the main charging linkage component (31) drives the main charging transmission disk (30) to rotate. The main charging shaft (4) is coaxially arranged with the main charging linkage (31) and rotates relative to it. There is a first empty stroke between the main charging shaft (4) and the main charging linkage (31). When the main charging shaft (4) rotates relative to the main charging linkage (31) and completes the first empty stroke, the main charging shaft (4) drives the main charging linkage (31) to rotate. The linkage mechanism connects the main charging shaft (4) to the pre-charging linkage component (21) so that when the main charging shaft (4) moves, it first drives the pre-charging linkage component (21) to perform opening / closing actions, and then drives the main charging linkage component (31) to perform opening / closing actions.

2. A fused switch gear transmission mechanism according to claim 1, wherein, The linkage mechanism includes: The pre-charge turntable (22) is coaxially arranged with the pre-charge linkage (21) and rotates synchronously. The main charging turntable (32) is coaxially arranged with the main charging shaft (4) and rotates relative to it. A second empty stroke is provided between the main charging turntable (32) and the main charging shaft (4). When the main charging shaft (4) rotates relative to the main charging turntable (32) and completes the second empty stroke, the main charging shaft (4) drives the main charging turntable (32) to rotate. There is a fifth empty stroke between the main charging turntable (32) and the pre-charging turntable (22). When the main charging turntable (32) completes the fifth empty stroke, it will contact the pre-charging turntable (22) and drive the pre-charging turntable (22) to rotate. When the main charging turntable (32) completes the fifth empty stroke, the main charging shaft (4) has not yet completed the first empty stroke.

3. A fused switch gear transmission mechanism according to claim 2, wherein, The pre-charge linkage component (21) is provided with a first connecting pin (210) that connects to the pre-charge transmission disk (20). The pre-charge transmission disk (20) is provided with a first connecting groove (200) that cooperates with the first connecting pin (210). The fourth free stroke is set as the movement path of the first connecting pin (210) in the first connecting groove (200). The pre-charge linkage component (21) is fixedly connected to the pre-charge turntable (22) through the first connecting pin (210). The main charging linkage component (31) is provided with a second connecting pin (310) that is connected to the main charging transmission disk (30), and the main charging transmission disk (30) is provided with a second connecting groove (300) that cooperates with the second connecting pin (310). The third free stroke is set as the movement path of the second connecting pin (310) in the second connecting groove (300). The main charging shaft (4) has a third connecting groove (40) that cooperates with the second connecting pin (310) at one end. The first empty stroke is set as the movement path of the second connecting pin (310) in the third connecting groove (40).

4. The fused switch gear transmission mechanism of claim 2, wherein, The outer wall of the main charging shaft (4) is provided with a lug (41), and the center of the main charging turntable (32) is provided with a center hole (320) that matches the lug (41). The second empty stroke is the movement path of the lug (41) in the center hole (320). The main charging turntable (32) has a protruding protrusion (321), and the pre-charging turntable (22) has a strip-shaped opening (220). One end of the strip-shaped opening (220) extends to the side wall of the pre-charging turntable (22) and has an opening for the protrusion (321) to enter. When the pre-charging transmission disc (20) is in the open state, the opening of the strip-shaped opening (220) is located on the moving path of the protrusion (321) when the main charging turntable (32) rotates. This moving path is set as the fifth empty stroke. The main charging turntable (32) drives the pre-charging turntable (22) to rotate through the cooperation of the protrusion (321) and the strip-shaped opening (220).

5. The fused switch gear transmission mechanism of claim 3, wherein, It also includes an energy storage mechanism (5), wherein multiple energy storage mechanisms (5) are disposed between the first connecting pin (210) and the outer casing (1) and between the second connecting pin (310) and the outer casing (1), and the energy storage mechanism (5) includes: A spring seat (50) is rotatably connected to the housing (1) via a connecting shaft (51); A spring bracket (52) is provided. One end of the spring bracket (52) is hinged to a first connecting pin (210) or a second connecting pin (310). The other end of the spring bracket (52) is provided with a waist-shaped hole (520) that is movably connected to a connecting shaft (51). A storage spring (53) is sleeved on the spring bracket (52). One end of the storage spring (53) abuts against a spring seat (50), and the other end is connected to the spring bracket (52).

Images