CN110265240B

CN110265240B - Operating mechanism of dual-power transfer switch

Info

Publication number: CN110265240B
Application number: CN201910412427.5A
Authority: CN
Inventors: 冯科让; 付青松; 黄正乾
Original assignee: SHENZHEN TAIYONG ELECTRICAL TECHNOLOGY CO LTD
Current assignee: SHENZHEN TAIYONG ELECTRICAL TECHNOLOGY CO LTD
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2021-01-01
Anticipated expiration: 2039-05-17
Also published as: CN110265240A

Abstract

The invention discloses an operating mechanism of a dual-power transfer switch, which comprises a shell, a shaft-driven component, an excitation driving device, a swing arm component, a translational shaft and a connecting rod component, wherein the shaft-driven component is positioned outside the shell and is arranged on the shell at one end; the connecting rod assembly comprises a first guide rail and a second guide rail which are arranged at intervals relatively, and a first connecting rod and a second connecting rod which are arranged between the first guide rail and the second guide rail and are relatively and rotatably connected, wherein the first connecting rod is connected with the translation shaft, and the second connecting rod is rotatably connected with the shaft-driven assembly; and rolling shafts which are respectively in sliding fit with the first guide rail and the second guide rail are arranged on two sides of one end of the first connecting rod, which is connected with the second connecting rod. According to the operating mechanism, the switching-on and switching actions of the operating mechanism are smoother and more reliable through the arrangement of the connecting rod assembly.

Description

Operating mechanism of dual-power transfer switch

Technical Field

The invention relates to the technical field of double-power-supply change-over switches, in particular to an operating mechanism of a double-power-supply change-over switch.

Background

The change-over switch is a common low-voltage electrical appliance, is commonly used in important power distribution occasions (such as hospital power supply systems), is used for switching two paths of power supplies, and can be quickly switched to a standby power supply when the common power supply fails in the power supply process, so that the normal power supply of a load end is ensured.

In the existing dual-power transfer switch, an operating mechanism realizes switching-on conversion between two switches by utilizing a structural mode of adding a poking plate to a Y-shaped groove. Because of the force component problem, the excitation mechanism is required to provide large power to complete the closing action. For a double-ended switch, the driving capability of the excitation mechanism must be doubled, which is generally not feasible in practical applications. Therefore, it is necessary to improve the operation mechanism of the dual power transfer switch so that it is feasible in practical applications.

Disclosure of Invention

The present invention is directed to an improved operating mechanism for a dual power transfer switch, which overcomes the above-mentioned drawbacks of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the operating mechanism comprises a shell, a shaft-driven component, an excitation driving device, a swing arm component, a translation shaft and a connecting rod component, wherein the shaft-driven component is positioned outside the shell and can be rotatably arranged on the shell at one end, the excitation driving device is arranged in the shell, the swing arm component is in linkage connection with the excitation driving device and can swing back and forth relative to the shell, the translation shaft is arranged in the swing arm component in a penetrating way and can move back and forth relative to the shell along with the swing of the swing arm component, and the connecting rod component is arranged on the shell and is in linkage connection with the translation shaft;

the connecting rod assembly comprises a first guide rail and a second guide rail which are arranged oppositely at intervals, and a first connecting rod and a second connecting rod which are arranged between the first guide rail and the second guide rail and are relatively and rotatably connected, wherein the first connecting rod is connected with the translation shaft, and the second connecting rod is rotatably connected with the shaft motion assembly; two sides of one end of the first connecting rod connected with the second connecting rod are provided with rolling shafts respectively matched with the first guide rail and the second guide rail in a sliding manner;

the excitation driving device acts to drive the swing arm assembly to swing back and forth, and the swing arm assembly swings back and forth to drive the translational shaft to move back and forth, so that the first connecting rod is driven to rotate along the first guide rail or the second guide rail, and the shaft moving assembly is driven to rotate.

Preferably, the shaft-driven assembly comprises a rotating shaft which is positioned outside the housing and is rotatably mounted on a first side plate of the housing with a first end, a first swing arm which is arranged on the first end of the rotating shaft, and two first auxiliary switches which are oppositely arranged on the outer surface of the first side plate at intervals;

the connecting rod assembly is arranged on the outer surface of the first side plate and is respectively positioned on two sides of the rotating shaft together with the first auxiliary switch; one end of the first swing arm faces the connecting rod assembly and is rotatably connected with the second connecting rod, the other end of the first swing arm is located between the two first auxiliary switches, and the first swing arm swings under the pushing of the rotation of the connecting rod assembly, and the other end of the first swing arm touches one first auxiliary switch.

Preferably, the shaft motion assembly further comprises two first microswitches arranged on two opposite sides of the second end of the rotating shaft; and a second swing arm is arranged at the second end of the rotating shaft, swings along with the rotation of the rotating shaft and touches the first microswitch.

Preferably, the connecting rod assembly further comprises a second microswitch arranged on one side of the first connecting rod away from the second connecting rod, and a positioning spring arranged between the first connecting rod and the translational shaft;

the first connecting rod moves back and forth along with the translational shaft, so that one end of the first connecting rod, which is far away from the second connecting rod, touches or leaves the second microswitch; two elastic arms with included angles of the positioning springs are respectively hooked on the first connecting rod and tightly abutted against the outer surface of the first side plate to drive the first connecting rod to abut against the first guide rail or the second guide rail through a rolling shaft on one side of the first connecting rod.

Preferably, the housing comprises a bottom plate, a first side plate and a second side plate which are oppositely connected to two sides of the bottom plate; the first side plate and the second side plate define an accommodating space on the bottom plate; the excitation driving device and the swing arm assembly are positioned at two ends in the accommodating space;

the swing arm assembly comprises a connecting shaft which is rotatably arranged between the first side plate and the second side plate in a penetrating way, and a swing frame which is connected to the connecting shaft through the lower end of the swing arm assembly close to the bottom plate; the driving rod of the excitation driving device extends towards the direction of the swing frame and is connected with the swing frame;

the translational shaft penetrates through the upper end of the swing frame, and two opposite end parts of the translational shaft are respectively matched in kidney-shaped holes formed in the first side plate and the second side plate.

Preferably, the operating mechanism further comprises a closing latch assembly mounted within the housing; the closing lock catch assembly comprises at least one lock rod which can rotate relative to the shell and is positioned on one side of the translational shaft, and a lock catch position which can be locked on the translational shaft or unlocked from the translational shaft is arranged on the lock rod;

when the lock catch position is locked on the translational shaft, the translational shaft is limited to move;

and when the lock catch position is separated from the translational shaft, the movement limitation on the translational shaft is removed.

Preferably, the brake closing latch assembly further includes a first electromagnet, a first lever connected to the first electromagnet, a swing rod rotatably penetrating the housing, a third swing arm connected to the swing rod and abutting against one end of the first lever, a second auxiliary switch disposed at the other end of the first lever and in separable contact with the other end, and a pulling member connected between the third swing arm and the housing; the lock rod is connected to the swing rod;

the pulling piece pulls the third swing arm to rotate, the swing rod drives the lock rod to rotate to be close to the translational shaft, and the lock rod is locked on the translational shaft until the lock position on the lock rod is locked;

the first electromagnet acts to drive the first lever to rotate, the first lever rotates to drive the third swing arm abutted against the first lever to rotate, and the third swing arm rotates to drive the lock rod to rotate through the swing rod and keep away from the horizontal moving shaft, so that the lock catch is separated from the horizontal moving shaft.

Preferably, the pulling member is a tension spring.

Preferably, the operating mechanism further comprises a closing switching assembly mounted in the housing;

the switching-on conversion component comprises a second electromagnet, a second lever connected to the second electromagnet, a push rod connected to one end of the second lever and corresponding to one side of the connection position of the first connecting rod and the second connecting rod, and a third microswitch arranged at the other end of the second lever and in separable contact with the other end;

the second electromagnet acts to pull the second lever to rotate, the second lever rotates to drive the push rod to move and press down the joint of the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod rotate relatively and are linked to drive the shaft motion assembly to rotate.

Preferably, the operating mechanism further comprises a switching-on and switching-off indicating device arranged in the shell;

the opening and closing indicating device comprises an indicating piece; the shaft-driven component is arranged on one end of the shell and is provided with a convex column protruding into the shell, the lower end of the indicating piece is provided with a clamping groove, and the indicating piece is matched on the convex column through the clamping groove and is connected with the shaft-driven component;

when the shaft movement assembly rotates relative to the shell, the indicating piece is driven to swing back and forth so as to indicate the position state of the shaft movement assembly.

The operating mechanism of the dual-power transfer switch has the function of realizing three-stage conversion, wherein the switching-on and conversion actions of the operating mechanism are smoother and more reliable through the arrangement of the connecting rod assembly; and the switching-on force at the tail end of the shaft-driven component is increased, so that the switch contact can obtain enough contact pressure and switching-off energy storage in the dual-power transfer switch, and the dual-power transfer switch can realize ideal functions on the basis of common power (the function that translational shaft-driven power theoretically approaches to zero).

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural diagram of an operating mechanism according to an embodiment of the present invention;

FIG. 2 is a top view of an operating mechanism according to one embodiment of the present invention;

FIG. 3 is a schematic view of the actuator with the housing removed according to one embodiment of the present invention;

FIG. 4 is a schematic structural view of an outer surface of a first side plate of the housing in the operating mechanism according to one embodiment of the present invention;

FIG. 5 is a schematic structural view of a closing latch assembly in the operating mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic view of the operating mechanism with the closing latch assembly on the second side plate of the housing according to one embodiment of the present invention;

fig. 7 is a schematic structural diagram of a closing switching assembly and a switching indicating device on a first side plate of a housing in an operating mechanism according to an embodiment of the present invention.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, an operating mechanism of a dual power transfer switch according to an embodiment of the present invention includes a housing 10, a shaft-moving assembly 20 mounted on the housing 10, an excitation driving device 30, a swing arm assembly 40, a translation shaft 50, and a connecting rod assembly 60.

The axial-motion assembly 20 is located outside the housing 10 and is rotatably mounted on the housing 10 at one end, the excitation driving device 30 is mounted in the housing 10, the swing arm assembly 40 is linked with the excitation driving device 30 and can swing back and forth relative to the housing 10, the translational shaft 50 is arranged in the swing arm assembly 40 in a penetrating manner and can move back and forth relative to the housing 10 along with the swing of the swing arm assembly 40, and the connecting rod assembly 60 is mounted on the housing 10 and is linked with the translational shaft 50. When the excitation driving device 30 is started, the excitation driving device 30 acts to drive the swing arm assembly 40 to swing back and forth, the swing arm assembly 40 swings back and forth to drive the translation shaft 50 to move back and forth, and therefore the connecting rod assembly 60 is driven to rotate and the shaft motion assembly 20 is driven to rotate, and switching-on and switching-off are achieved.

Specifically, the housing 10 may include a bottom plate 13, and a first side plate 11 and a second side plate 12 vertically connected to opposite sides of the bottom plate 13. The first side plate 11 and the second side plate 12 define a receiving space on the bottom plate 13 for receiving the excitation driving device 30, the swing arm assembly 40, the translation shaft 50, and the like.

The shaft moving assembly 20 may include a rotating shaft 21, a first swing arm 22, and two first auxiliary switches 23. The rotating shaft 21 is located outside the housing 10 and is rotatably mounted at a first end thereof to the first side plate 11 of the housing 10. The first swing arm 22 is provided at a first end of the rotating shaft 21 and close to the first side plate 11, and is swingable back and forth in a clockwise or counterclockwise direction on an outer surface of the first side plate 11. The two first auxiliary switches 23 are disposed on the outer surface of the first side plate 11, and are relatively spaced at two sides of one end of the first swing arm 22, so that when the first swing arm 22 swings back and forth, the first swing arm 22 can be switched on or off under touch, and a circuit can be switched on and off in time.

The first swing arm 22 is linked to the link assembly 60 at one end thereof, and the opposite end is located between the two first auxiliary switches 23 and is movably connected to the first side plate 11 through a pin, so that the first swing arm 22 is rotatable relative to the housing 10 while the balance thereof is ensured, and the problem of inclination and the like is avoided. The other end of the first swing arm 22 is further provided with a return spring, and the first swing arm 22 can be pulled to return after the first swing arm 22 rotates. The return spring may be a tension spring, one end of which is connected to the first swing arm 22 and the other end of which is positioned on the first side plate 11 of the housing 10.

The shaft drive assembly 20 may also include two first microswitches 24. The two first micro switches 24 are far away from the first side plate 11 of the housing 10, are arranged on two opposite sides of the second end of the rotating shaft 21, and can be touched by the rotating shaft 21 to be switched on or switched off. Corresponding to the first micro switches 24, the second end of the rotating shaft 21 is provided with a second swing arm 211, the second swing arm 211 swings along with the rotation of the rotating shaft 21, when the first swing arm 22 swings and touches one first auxiliary switch 23, the second swing arm 211 correspondingly touches one of the two first micro switches 24, so that the touched first micro switch 24 is switched on or switched off, and the circuit switching state is sensed.

In this embodiment, the length direction of the first swing arm 22 and the length direction of the second swing arm 211 are perpendicular to each other on the rotating shaft 21.

The excitation driving device 30 and the swing arm assembly 40 are located at both ends in the accommodating space of the housing 10. The driving rod 31 of the excitation driving device 30 extends towards the swing arm assembly 40 and is connected with the swing arm assembly, and the swing arm assembly 40 is driven to swing relative to the housing 10 through the back-and-forth expansion and contraction of the driving rod 31.

The swing arm assembly 40 may include a connecting shaft 41 and a swing frame 42. The connecting shaft 41 is rotatably inserted between the first side plate 11 and the second side plate 12 of the housing 10 and is close to the bottom plate 13 of the housing 10. The swing frame 42 is coupled to the coupling shaft 41 at a lower end thereof adjacent to the base plate 13 such that the swing frame 42 is positioned in the housing 10 by the coupling shaft 41. The upper end of the swing frame 42 is connected to the driving rod 31 of the excitation driving device 30, so that the swing frame 42 can rotate around the connecting shaft 41 under the driving of the driving rod 31, and swing back and forth in the direction approaching to and away from the excitation driving device 30.

The swing frame 42 may be a U-shaped frame body, or a plurality of swing pieces are arranged in parallel at intervals and connected to be integrally formed.

The translation shaft 50 is disposed through the upper end of the swing frame 42 and can translate relative to the housing 10 along with the swing frame 42. Corresponding to the translational shaft 50, the first side plate 11 and the second side plate 12 of the housing 10 are respectively provided with a waist-shaped hole 14, and opposite end portions of the translational shaft 50 are respectively fitted in the waist-shaped holes 14 of the first side plate 11 and the second side plate 12, so that the translational shaft 50 is positioned in the housing 10.

The length direction of the slotted hole 14 is parallel to the extending and contracting direction of the driving rod 31 of the excitation driving device 30, so that the translational shaft 50 can move back and forth in the slotted hole 14 along the length direction of the slotted hole 14.

As shown in fig. 1 and 4, the link assembly 60 is mounted on the first side plate 11 of the housing 10. In this embodiment, the connecting rod assembly 60 is located on the outer surface of the first side plate 11 and on one side of the shaft moving assembly 20, so as to be located on two opposite sides of the rotating shaft 21 of the shaft moving assembly 20 with the first auxiliary switch 23.

The linkage assembly 60 may include first and

second rails

61 and 62 disposed in spaced relation to one another, and first and

second links

63 and 64 disposed between the first and

second rails

61 and 62 and rotatably coupled to one another. The first link 63 is connected to the translation shaft 50 and the second link 64 is rotatably connected to the pivoting assembly 20. The excitation driving device 30 acts to drive the swing arm assembly 40 to swing back and forth, the swing arm assembly 40 swings back and forth to drive the translational shaft 50 to move back and forth, so that the first connecting rod 63 is driven to rotate along the first guide rail 61 or the second guide rail 62, the shaft moving assembly 20 is driven to rotate through the second connecting rod 64, and smooth and reliable switching-on or switching-off is realized.

Specifically, one end of the first link 63 is fixedly connected to the end of the translational shaft 50 penetrating the first side plate 11, the other end of the first link 63 opposite to the second link 64 is rotatably connected to the second side plate 11 through a pin, and the pin penetrates the first side plate 11 to position the first link 63 and the second link 64 on the outer surface of the first side plate 11. The second link 64 is rotatably connected at one end thereof to the first link 63 and at the opposite end thereof to the first swing arm 22 of the pivoting assembly 20. When the translational shaft 50 moves to drive the first connecting rod 63 to rotate, the second connecting rod 64 also drives the first swing arm 22 to swing back and forth in a clockwise or counterclockwise direction to touch a first auxiliary switch 23, and the first swing arm 22 swings and simultaneously drives the rotating shaft 21 to rotate, thereby driving the second swing arm 211 to swing and touch the first micro switch 24.

The first guide rail 61 and the second guide rail 62 are located on two opposite sides (upper and lower sides as shown in fig. 1) of the first link 63, rollers 65 are respectively arranged on two sides of one end of the first link 63 connected with the second link 64, and the rollers 65 on the two sides are respectively in sliding fit with the first guide rail 61 and the second guide rail 62. When the first link 63 rotates along with the movement of the translation shaft 50, it can contact the corresponding guide rail through the roller 65 on one side and rotate obliquely upward or obliquely downward along the guide rail.

The first rail 61 and the second rail 62 are symmetrically disposed on the first side plate 11, and the rollers 65 are also symmetrically disposed on the first link 63.

Further, the link assembly 60 further includes a second microswitch 66 disposed on a side of the first link 63 remote from the second link 64, and a positioning spring 67 disposed between the first link 63 and the translation shaft 40.

The first connecting rod 63 moves back and forth along with the translational shaft 40, so that one end of the first connecting rod 63, which is far away from the second connecting rod 64, touches or leaves the second microswitch 66, and the second microswitch 66 is switched on or switched off; the position states of the first link 63 and the second link 64 are judged by turning on or off the second microswitch 66. The positioning spring 67 is a torsion spring, and two elastic arms with included angles thereof are respectively hooked on the first connecting rod 63 and abutted against the outer surface of the first side plate 11. The positioning spring 67 is provided to make the first link 63 abut against the first rail 61 or the second rail 62 with the roller 65 on one side thereof before being driven to rotate.

As shown in fig. 1 and 4, in the present embodiment, the first guide rail 61 and the second guide rail 62 are disposed at an interval from top to bottom on the first side plate 11, and two elastic arms of the positioning spring 67 are respectively hooked on a lower edge of the first link 63 and abutted against a position of the first side plate 11 below the first link 63, so as to abut the roller 65 of the first link 63 on the upper side against the first guide rail 61.

Further, as shown in fig. 1-3 and 5, the operating mechanism of the present invention further includes a closing latch assembly 70 mounted in the housing 10. In this embodiment, the closing latch assembly 70 is located within the housing 10 adjacent the second side plate 12.

The closing locking assembly 70 may include at least one locking lever 71 rotatable with respect to the housing 10 and located at one side of the translational shaft 40, and the locking lever 71 is provided with a locking position 710, and the locking position 710 is locked on the translational shaft 40 or unlocked from the translational shaft 40 along with the rotation of the locking lever 71. When the locking position 710 is locked on the translational shaft 40, the translational shaft 40 is limited to move; when the lock position 710 is disengaged from the translational shaft 40, the movement restriction of the translational shaft 40 is released.

Specifically, when the translational shaft 40 moves to the closing position, the lock lever 71 rotates in a direction approaching the translational shaft 40, and the lock position 710 on the lock lever engages with the translational shaft 40 to lock and lock the translational shaft 40, thereby restricting the translational shaft 40 from moving in the opening direction. When the lock rod 71 rotates in a direction away from the translational shaft 40, the lock position 710 on the lock rod is driven to be separated from the translational shaft 40, and the translational shaft 40 can move in a direction of the opening position.

The locking position 710 may be a notch that fits into a surface of the translation shaft 40.

As shown in fig. 5 and 6, the closing latch assembly 70 further includes a first electromagnet 72, a first lever 73 connected to the first electromagnet 72, a swing rod 74 rotatably inserted into the housing 10, a third swing arm 75 connected to the swing rod 74 and abutting against one end of the first lever 73, a second auxiliary switch 76 disposed at the other end of the first lever 73 and detachably contacting with the other end, and a pulling member 77 connected between the third swing arm 75 and the housing 10. The swing link 74 is rotatably disposed between the first side plate 11 and the second side plate 12 of the housing 10, and the lock lever 71 is connected to the swing link 74 and rotates with the swing link 74.

The first lever 73 is connected to the first electromagnet 72 mainly at a middle portion thereof, and opposite ends thereof face the third swing arm 75 and the second auxiliary switch 76, respectively. One end of the first lever 73 facing the third swing arm 75 is connected to the inner surface of the second side plate 12 by a pin, and when the first electromagnet 72 is actuated, the first lever 73 is pulled to rotate around the pin. The pulling member 77 is specifically located below the third swing arm 75, and both ends of the pulling member are connected to the third swing arm 75 and the second side plate 12. The pulling member 77 may be a tension spring.

The pulling member 77 pulls the third swing arm 75 to rotate (counterclockwise as shown in fig. 6), and the swing link 74 drives the lock lever 71 to rotate close to the translational shaft 40, until the locking position 710 on the lock lever 71 is locked on the translational shaft 40, so that the translational shaft 40 is positioned at the closing position. When the first electromagnet 72 operates to drive the first lever 73 to rotate (counterclockwise as shown in fig. 6), the first lever 73 rotates to drive the third swing arm 75 abutted against the first lever to rotate (clockwise), the third swing arm 75 rotates to drive the lock rod 71 to rotate away from the translational shaft 40 through the swing rod 74, so that the lock catch 710 is separated from the translational shaft 40, and at this time, the translational shaft 40 can move to the opening position.

As shown in fig. 2 and 7, the operating mechanism of the present invention further includes a closing switching assembly 80 installed in the housing 10.

The closing switching assembly 80 includes a second electromagnet 81, a second lever 82 connected to the second electromagnet 81, a push rod 83 connected to one end of the second lever 82 and corresponding to a side where the first link 63 and the second link 64 of the link assembly 60 are connected, and a third micro switch 84 provided at and separably contacting the other end of the second lever 82. The second electromagnet 81 acts to pull the second lever 82 to rotate, and the second lever 82 rotates to drive the push rod 83 to move and press the joint of the first connecting rod 63 and the second connecting rod 64, so that the first connecting rod 63 and the second connecting rod 64 rotate relatively and the shaft driving assembly 20 is driven to rotate in a linkage manner.

Specifically, the second electromagnet 81 of the closing switching assembly 80 is positioned on the bottom plate 13 of the housing 10, and the second lever 82 and the third microswitch 84 are both mounted on the inner surface of the first side plate 11 of the housing 10, so as to be located on the opposite surfaces of the first side plate 11 from the connecting rod assembly 60. The second lever 82 is connected to the second electromagnet 81 at its middle portion, and both ends extend to both sides of the second electromagnet 81. The push rod 83 is connected to one end of the second lever 82, and is perpendicular or inclined relative to the second lever 82, and an end of the push rod 83 away from the second lever 82 abuts against or is close to a connection position of the first connecting rod 63 and the second connecting rod 64 (such as a pin shaft between the first connecting rod 63 and the second connecting rod 64), and when the second lever 82 rotates, the push rod 83 can be driven to move towards the first connecting rod 63 to press against the connection position of the first connecting rod 63 and the second connecting rod 64, so that the first connecting rod 63 and the second connecting rod 64 rotate relatively (such as a joint formed by connecting the first connecting rod 63 and the second connecting rod 64 bends downward). In order to facilitate the pushing rod 83 to press against the first connecting rod 63, the pushing rod 83 is disposed on the outer surface of the first side plate 11, specifically between the first connecting rod 63 and the first side plate 11.

The third microswitch 84 is located at the other end of the second lever 82 opposite to the other end, and is located in the rotating direction of the other end, when the second lever 82 rotates, the other end is driven to touch the third microswitch 84, so that the third microswitch 84 is switched on or off, the switching state of the switching-on switching assembly 80 can be sensed, and the circuit can be switched in time.

The roller 65 on the upper side of the first link 63 abuts against the first rail 61 in conjunction with the provision of the positioning spring 67 in the link assembly 60. The closing conversion component 80 acts to make the push rod 83 press down the connection between the first link 63 and the second link 64, so as to drive the roller 65 of the first link 63 located at the lower side to abut against the second rail 62, and when the translation shaft 40 moves to drive the first link 63 to rotate, the roller 65 of the first link 63 abuts against and moves along the second rail 62.

Further, as shown in fig. 1 to 3 and 7, the operating mechanism of the present invention further includes a switching-on/off indication device 90 installed in the housing 10 for indicating the state of switching-on/off.

The opening and closing indicating device 90 may include an indicating member 91, and the indicating member 91 may have a bar-like and long-bar structure. In this embodiment, the indicator 91 is mounted inside the first side plate 11 of the housing 10 by a vertical bottom plate 13, and can swing back and forth relative to the first side plate 11.

The indicator 91 is disposed in cooperation with the pivoting assembly 20. One end of the shaft-driven assembly 20 (specifically, one end of the rotating shaft 21) mounted on the housing 10 is provided with a convex pillar 25 protruding in the housing 10, and the convex pillar 25 protrudes on the inner surface of the first side plate 11. Correspondingly, the lower end of the indicator 91 is provided with a slot 92, and the indicator 91 is connected with the shaft-driven component 20 by fitting the slot 92 on the convex column 25. When the shaft-driven component 20 rotates relative to the housing 10, the indicator 91 is driven to swing back and forth to indicate the position state of the shaft-driven component 20, and further indicate the switching-on/off state.

The top of the indicator 91 is exposed at the top of the housing 10, and when the indicator 91 swings with the rotation of the shaft motion assembly 20, the swinging direction of the indicator 91 can be observed from the housing 10, so that the position state of the shaft motion assembly 20 can be known.

Alternatively, the locking groove 92 may be an inverted U-shape with its opening fitted over the stud 25 from top to bottom.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The operating mechanism of the dual-power transfer switch is characterized by comprising a shell (10), a shaft-driven assembly (20) which is positioned outside the shell (10) and is rotatably installed on the shell (10) at one end, an excitation driving device (30) installed in the shell (10), a swing arm assembly (40) which is in linkage connection with the excitation driving device (30) and can swing back and forth relative to the shell (10), a translation shaft (50) which is arranged in the swing arm assembly (40) in a penetrating way and can move back and forth relative to the shell (10) along with the swing of the swing arm assembly (40), and a connecting rod assembly (60) which is installed on the shell (10) and is in linkage connection with the translation shaft (50);

the connecting rod assembly (60) comprises a first guide rail (61) and a second guide rail (62) which are arranged oppositely at intervals, and a first connecting rod (63) and a second connecting rod (64) which are arranged between the first guide rail (61) and the second guide rail (62) and are relatively rotatably connected, wherein the first connecting rod (63) is connected with the translational shaft (50), and the second connecting rod (64) is rotatably connected with the axial motion assembly (20); two sides of one end of the first connecting rod (63) connected with the second connecting rod (64) are provided with rolling shafts (65) which are respectively in sliding fit with the first guide rail (61) and the second guide rail (62);

the excitation driving device (30) acts to drive the swing arm assembly (40) to swing back and forth, the swing arm assembly (40) swings back and forth to drive the translational shaft (50) to move back and forth, and therefore the first connecting rod (63) is driven to rotate along the first guide rail (61) or the second guide rail (62), and the shaft motion assembly (20) is driven to rotate.

2. The operating mechanism according to claim 1, wherein the shaft-driven assembly (20) comprises a rotating shaft (21) located outside the housing (10) and rotatably mounted at a first end on a first side plate (11) of the housing (10), a first swing arm (22) disposed at the first end of the rotating shaft (21), and two first auxiliary switches (23) disposed at opposite intervals on an outer surface of the first side plate (11);

the connecting rod assembly (60) is arranged on the outer surface of the first side plate (11) and is respectively positioned on two sides of the rotating shaft (21) together with the first auxiliary switch (23); one end of the first swing arm (22) faces the connecting rod assembly (60) and is rotatably connected with the second connecting rod (64), the other end of the first swing arm is located between the two first auxiliary switches (23), and the first swing arm (22) swings under the rotating pushing of the connecting rod assembly (60) and touches one first auxiliary switch (23) with the other end of the first swing arm.

3. Operating mechanism according to claim 2, wherein the shaft-moving assembly (20) further comprises two first microswitches (24) arranged on opposite sides of the second end of the rotating shaft (21); and a second swing arm (211) is arranged at the second end of the rotating shaft (21), and the second swing arm (211) swings along with the rotation of the rotating shaft (21) and touches the first microswitch (24).

4. The operating mechanism according to claim 1, wherein the link assembly (60) further comprises a second microswitch (66) arranged on a side of the first link (63) remote from the second link (64), a positioning spring (67) arranged between the first link (63) and the translational shaft (50);

the first connecting rod (63) touches or leaves the second microswitch (66) with one end of the first connecting rod (63) far away from the second connecting rod (64) along with the back and forth movement of the translation shaft (50); two elastic arms with included angles of the positioning spring (67) are respectively hooked on the first connecting rod (63) and tightly abutted against the outer surface of the first side plate (11) of the shell (10), and the first connecting rod (63) is driven to abut against the first guide rail (61) or the second guide rail (62) through a rolling shaft (65) on one side of the first connecting rod.

5. Operating mechanism according to claim 1, characterized in that the housing (10) comprises a bottom plate (13), a first side plate (11) and a second side plate (12) connected opposite on both sides of the bottom plate (13); the first side plate (11) and the second side plate (12) define an accommodating space on the bottom plate (13); the excitation driving device (30) and the swing arm assembly (40) are positioned at two ends in the accommodating space;

the swing arm assembly (40) comprises a connecting shaft (41) and a swing frame (42) which are rotatably arranged between the first side plate (11) and the second side plate (12) in a penetrating mode, and the swing frame (42) is connected to the connecting shaft (41) by the lower end close to the bottom plate (13); a driving rod (31) of the excitation driving device (30) extends towards the direction of the swing frame (42) and is connected with the swing frame (42);

the horizontal moving shaft (50) penetrates through the upper end of the swing frame (42), and two opposite end parts of the horizontal moving shaft (50) are respectively matched in waist-shaped holes (14) formed in the first side plate (11) and the second side plate (12).

6. Operating mechanism according to any of claims 1-5, characterized in that it further comprises a switch-on latch assembly (70) mounted in the housing (10); the brake closing lock catch assembly (70) comprises at least one lock rod (71) which can rotate relative to the shell (10) and is positioned on one side of the horizontal moving shaft (50), and a lock catch position (710) which can be locked on the horizontal moving shaft (50) or unlocked from the horizontal moving shaft (50) is arranged on the lock rod (71);

when the locking position (710) is locked on the translational shaft (50), the translational shaft (50) is limited to move;

when the lock position (710) is separated from the translational shaft (50), the movement restriction of the translational shaft (50) is released.

7. The operating mechanism according to claim 6, wherein the closing latch assembly (70) further comprises a first electromagnet (72), a first lever (73) connected to the first electromagnet (72), a swing link (74) rotatably disposed through the housing (10) with respect to the housing (10), a third swing arm (75) connected to the swing link (74) and abutting one end of the first lever (73), a second auxiliary switch (76) disposed at and detachably contacting the other end of the first lever (73), and a pulling member (77) connected between the third swing arm (75) and the housing (10); the lock rod (71) is connected to the swing rod (74);

the pulling piece (77) pulls the third swing arm (75) to rotate, the swing rod (74) drives the lock rod (71) to rotate to be close to the translational shaft (50), and a lock catch position (710) on the lock rod (71) is locked on the translational shaft (50);

first electro-magnet (72) action drives first lever (73) are rotated, first lever (73) rotate order rather than the butt third swing arm (75) rotate, third swing arm (75) rotate pass through pendulum rod (74) drive locking lever (71) rotate and keep away from translational axis (50), make hasp position (710) break away from translational axis (50).

8. Operating mechanism according to claim 7, characterized in that the pulling member (77) is a tension spring.

9. Operating mechanism according to claim 6, characterized in that it further comprises a closing switch assembly (80) mounted inside said housing (10);

the switching-on conversion assembly (80) comprises a second electromagnet (81), a second lever (82) connected to the second electromagnet (81), a push rod (83) connected to one end of the second lever (82) and corresponding to one side of the connection position of the first connecting rod (63) and the second connecting rod (64), and a third microswitch (84) arranged at the other end of the second lever (82) and in separable contact with the other end;

the second electromagnet (81) acts and pulls the second lever (82) to rotate, the second lever (82) rotates and drives the push rod (83) to move and press down the joint of the first connecting rod (63) and the second connecting rod (64), and the first connecting rod (63) and the second connecting rod (64) rotate relatively and are linked to drive the shaft motion assembly (20) to rotate.

10. Operating mechanism according to any of claims 1-5, characterized in that it further comprises a switch-off and switch-on indicating device (90) mounted in the housing (10);

the switching-on and switching-off indicating device (90) comprises an indicating piece (91); one end of the shaft-driven component (20) mounted on the shell (10) is provided with a convex column (25) protruding in the shell (10), the lower end of the indicator (91) is provided with a clamping groove (92), and the indicator (91) is matched with the convex column (25) through the clamping groove (92) to be connected with the shaft-driven component (20);

when the shaft movement assembly (20) rotates relative to the shell (10), the indicating piece (91) is driven to swing back and forth so as to indicate the position state of the shaft movement assembly (20).