AU2020103934A4

AU2020103934A4 - Frame type integrated dual power supply

Info

Publication number: AU2020103934A4
Application number: AU2020103934A
Authority: AU
Inventors: Dajiang CHEN; Gang DAI; Kui HOU; Zhong Wang
Original assignee: Daqo Group Co Ltd; Nanjing Daqo Electrical Institute Co Ltd; Jiangsu Daqo Kfine Electric Co Ltd
Current assignee: Daqo Group Co Ltd; Nanjing Daqo Electrical Institute Co Ltd; Jiangsu Daqo Kfine Electric Co Ltd
Priority date: 2018-05-25
Filing date: 2020-12-07
Publication date: 2021-02-11
Anticipated expiration: 2026-08-01

Abstract

The invention discloses the frame type integrated dual power supply, belongs to the technical field of low-voltage electrical component equipment. The invention including a change-over mechanism, an operation mechanism and two groups of contact components, wherein the contact components include movable contacts and fixed contacts; the two movable contacts are connected with each other through a connection shaft; the connection shaft is provided with a rotating shaft; the two movable contacts can rotate around the rotating shaft serving as a center; one end of the change-over mechanism is provided with two branches separately connected with the movable contacts, and the other end of the change-over mechanism pre-selects a closing direction by means of shifting a handle; and the operation mechanism pushes the change-over mechanism to cause the change-over mechanism to push the fixed contact in the pre-selected closing direction, so that the contact component at the end is closed. 12 3 4 5 6 7 9 30 29 12 2 ___ __ 13 14 15 16 17 27 26 25 24 23 22 21 20 19 is Fig. 1 115

Description

12 3 4 5 6 7

9

29 12

2 ___ __ 13

14

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27 26 25 24 23 22 21 20 19 is Fig. 1

FRAME TYPE INTEGRATED DUAL POWER SUPPLY

Field 10001] The invention belongs to the technical field of low-voltage electrical component equipment, and more particularly relates to a dual power supply switch used for protecting circuits and capable of being changed over automatically.

Background 10002] In power distribution appliances, dual power switches are used to protect lines and equipment from being subjected to faults such as overload and short-circuit. At the same time, another backup power supply can be quickly and automatically switched to ensure continuous power supplying of a line. With more and more reuse places, and higher and higher power consumption of equipment, etc., the demand for large-capacity dual power switches is increasing.

10003] At present, a large-capacity dual power supply on the market is mainly used by connecting two frame type circuit breakers, so that the large-capacity dual power supply is large in size and high in cost, and cannot meet the requirements of some reuse places. 10004] Chinese patent application 201210050095.9 discloses an interlocking device for a dual power supply change-over switch, including a switching mechanism, an operation mechanism, an indication mechanism and an interlocking mechanism. The switching mechanism includes a switching main shaft and a reversing plate; the edge of the reversing plate is provided with a sliding surface; a frame and a closing half shaft are arranged in the operation mechanism; the indication mechanism includes a main indication member, a main reset spring and an auxiliary reset spring; the interlocking mechanism includes an interlocking plate, a main interlocking rod and an auxiliary interlocking rod; the interlocking plate is of a Y shape provided with three protrusive plates, and the center of the interlocking plate is rotatably arranged on the frame of the operation mechanism; an interlocking hole is formed in each protrusive plate in the interlocking plate; one protrusive plate sleeves the closing half shaft through the corresponding interlocking hole; the other two protrusive plates are connected with the main interlocking rod or the auxiliary interlocking rod through the corresponding interlocking holes; the other end of the main interlocking rod is connected with the main indication member; and the auxiliary interlocking rod is connected with the auxiliary indication member. According to the invention, the closing half shaft can be limited through the linkage of the indication mechanism according to a state of the switching main shaft, so as to effectively prevent mis-operation and improve the safety. However, the interlocking device is relatively complicated in structure and relatively inconvenient to operate, and the reliability of changing a power supply is a little insufficient, which cannot meet the requirements of some reuse places.

Summary

10005] The invention is directed to provide a frame type integrated dual power supply for a problem that automatic change-over of high-current power supplies is difficult to carry out in a reuse place. Power supplying is carried out by two power supplies. When a frequently-used power supply is powered off or faulted, the frequently-used power supply is helped to be quickly cut off and changed over to the other power supply.

10006] Specifically, the invention is realized by using the following technical solution:

10007] A frame type integrated dual power supply, including a change-over mechanism, an operation mechanism and two groups of contact components, wherein the contact components include movable contacts and fixed contacts; the two movable contacts are connected with each other through a connection shaft; the connection shaft is provided with a rotating shaft; the two movable contacts can rotate around the rotating shaft serving as a center; one end of the change-over mechanism is provided with two branches separately connected with the movable contacts, and the other end of the change-over mechanism pre-selects a closing direction by means of shifting a handle; and the operation mechanism pushes the change-over mechanism to cause the change-over mechanism to push the fixed contact in the pre-selected closing direction, so that the contact component at the end is closed.

10008] Wherein the change-over mechanism includes a handle and a turntable; the handle and the turntable are linked through a first connection rod mechanism; the turntable and one movable contact are linked through a second connection rod mechanism; and the turntable and the other movable contact are linked through a third connection rod mechanism.

10009] Wherein the first connection rod mechanism includes a first connection rod and a rotary plate; the turntable is provided with a first waist-shaped hole; one end of the first connection rod is limited by the waist-shaped hole, and the other end of the first connection rod is hinged to the rotary plate; the middle portion of the first connection rod movably sleeves a rotating shaft; and the rotation of the rotary plate is driven by the handle.

10010] Wherein the second connection rod mechanism includes a second connection rod, a third cantilever and a second main shaft; the turntable is provided with a second waist-shaped hole; one end of the second connection rod is limited to the second waist-shaped hole, and the other end of the second connection rod is hinged to one end of the third cantilever; the other end of the third cantilever is fixed onto the second main shaft; a connection rod is further fixed on the second main shaft; the connection rod is connected with the fixed contacts, and pushes or pulls the fixed contacts according to the rotation of the second main shaft; the third cantilever is further connected with an elastic component stretching for energy storage; and the structure of the third connection rod mechanism is the same as the structure of the second connection rod mechanism.

10011] Wherein the operation mechanism includes a first main shaft, a second cantilever and a sliding block; one end of the second cantilever is fixed onto the first main shaft, and the other end of the second cantilever is hinged to the sliding block; and the rotating shaft used for supporting the rotation of the rotary plate is arranged on the sliding block.

10012] Wherein when a main circuit is closed, the corresponding elastic component stretches to store energy; and when the main circuit is opened, the energy in the elastic component is released.

10013] Wherein the second waist-shaped hole in the turntable bends along a circumferential direction of the turntable.

10014] Wherein the rotary plate is of an isosceles triangle, and a vertex of the rotary plate is connected with the first connection rod; and a bottom edge of the rotary plate abuts against the bottom of the handle.

10015] Wherein the vertex of the rotary plate is provided with a waist-shaped hole; and the end portion of the first connection rod is limited to move in the waist-shaped hole.

10016] Wherein the frame type integrated dual power supply is arranged on a body; the half upper part of the body is provided with the first group of contact component, and is an upper main circuit; when the part is closed, a main power supply is switched on; the half lower part of the body is provided with the other group of contact component, and is a lower main circuit; and when the part is closed, a backup power supply is switched on. 10017] The invention has the following beneficial effects. 10018] The frame type integrated dual power supply of the invention allows the two power supplies to be disconnected simultaneously, but only allows one power supply to be connected. Since the frame type integrated dual power supply of the invention is only provided with one operation mechanism, when one power supply is in a connected state, the other power supply cannot be closed and connected; therefore, the safety of a main circuit is reliably ensured. The frame type integrated dual power supply of the invention makes use of a high-capacity rated current and a breakage indicator and of a frame type short-circuiter and the structural features of a body and a mechanism, thereby reducing the product space and the cost. Brief Description of the Drawings 10019] Fig. 1 is an isometric drawing of the frame type integrated dual power supply of the embodiment of the invention.

10020] Fig. 2 is a structural schematic diagram of the frame type integrated dual power supply in a dual disconnection state before an upper contact is closed according to the embodiment of the invention. 10021] Fig. 3 is a structural schematic diagram of an upper contact in a closed state of the embodiment of the invention.

10022] Fig. 4 is a structural schematic diagram of the frame type integrated dual power supply in a dual disconnection state before a lower contact is closed according to the embodiment of the invention.

10023] Fig. 5 is a structural schematic diagram of a lower contact in a closed state of the embodiment of the invention.

10024] Numerals in the drawings: 1: rear base; 2: front base; 3: first cantilever; 4: first spring fixing shaft; 5: first tension spring; 6: first shaft; 7: second shaft; 8: operation component; 9: first main shaft; 10: second cantilever; 11: third shaft; 12: sliding block; 13: first connection rod; 14: fourth shaft; 15: handle; 16: fifth shaft; 17: rotary plate; 18: sixth shaft; 19: seventh shaft; 20: eighth shaft; 21: second tension spring; 22: second spring fixing shaft; 23: third cantilever; 24: ninth shaft; 25: second connection rod; 26: second main shaft; 27: tenth shaft; 28: turntable; 29: third connection rod; 30: third main shaft; 31: first fixed contact; 32: first movable contact; 33: movable contact busbar; 34: second movable contact; : second fixed contact; 36: first waist-shaped hole; 37: second waist-shaped hole; and 38: third waist-shaped hole.

Detailed Description of the Embodiments 10025] The invention will be further described below in detail in combination with the embodiments and with reference to the accompanying drawings.

10026] Embodiment 1 10027] The structural schematic diagram of a frame type integrated dual power supply of the specific embodiment of the invention refers to Fig. 1. The frame type integrated dual power supply is mainly composed of a body, a change-over mechanism, an operation mechanism, and the like. The body includes a rear base 1, a front base 2, a first fixed contact 31, a first movable contact 32, a movable contact busbar 33, a second movable contact 34 and a second fixed contact 35. From the view of Fig. 1, the half upper part of the body is an upper main circuit (or a first main circuit); after the frame type integrated dual power supply is connected to the half upper part, a main power supply can be switched on; the half lower part of the body is a lower main circuit (or a second main circuit); after the frame type integrated dual power supply is connected to the half lower part, a backup power supply can be switched on; the change-over mechanism includes a handle 15, a fifth shaft 16, a rotary plate 17, a sixth shaft 18, a seventh shaft 19, an eighth shaft 20 and a turntable 28; and the operation mechanism includes an operation component 8, a first main shaft 9, a second cantilever 10, a sliding block 12, a second main shaft 26 and a third main shaft 30. The three constituents are connected and transmitted mainly through parts such as the connection rods or tension springs. 10028] The rame type integrated dual power supply can allow two power supplies to be disconnected at the same time, i.e., a dual disconnection state, referring to Fig. 2 and Fig. 4, but does not allow the two power supplies to be connected at the same time. Only one power supply can be connected within the same time. Fig. 3 illustrates a closed state of an upper contact, or Fig. 5 illustrates a closed state of a lower contact.

10029] Referring to Fig. 2, when the power supplies of the two main circuits are disconnected, the change-over mechanism may be changed to a direction for preparation of closing, i.e., closing the upper main circuit (the first main circuit) or the lower main circuit (the second main circuit). When the handle 15 is rotated anticlockwise (based on the view of Fig. 2), the handle 15 pushes the bottom edge of the triangular rotary plate 17 to anticlockwise rotate around the fourth shaft 14; the rotary plate 17 anticlockwise rotates to drive, through the sixth shaft 18, a first connection rod 13 connected to a vertex of the rotary plate 17 to clockwise (based on the view of Fig. 2) rotate around the seventh shaft 19; the first connection rod 13 clockwise rotates to drive the eighth shaft 20 to be located above the third waist-shaped hole 38 of the turntable 28, thus proceeding to a state of preparing to close the upper main circuit (the first main circuit) shown in Fig. 2. 10030] Referring to Fig. 3, when the operation mechanism closes the upper main circuit

(the first main circuit), the operation mechanism drives the first main shaft 9 to clockwise rotate (based on the view of Fig. 3), and drives the second cantilever 10 at the same time to clockwise rotate around the first main shaft 9; the second cantilever 10 clockwise rotates to drive, through the third shaft 11, the sliding block 12 to slide to the left; and the sliding block 12 slides to the left to drive, through the seventh shaft 19, the first connection rod 13 to move to the left. Since the turntable 28 can rotate only, the first connection rod 13 slides to the left to push, through the eighth shaft 20, the turntable 28 to anticlockwise rotate. The third main shaft 30 is fixed to the first cantilever 3, and thefirst cantilever 3 is connected with the turntable 28 through the first shaft 6, the third connection rod 29, and the second shaft 7; the anticlockwise rotation of the turntable 28 pulls, through the first shaft 6, the third connection rod 29, and the second shaft 7, the first cantilever 3 to clockwise rotate, and the third main shaft 30 also clockwise rotates; at this moment, the second shaft 7 on the third connection rod 29 is located at the end, close to the third waist-shaped hole 38, of the first waist-shaped hole 36 in the turntable 28; the tenth shaft 27 on the second connection rod 25 is located on the end, away from the third waist-shaped hole 38, of the second waist-shaped hole 37 in the turntable 28; and at the same time, a first tension spring 5 is pulled to an energy storage state. The clockwise rotation of the third main shaft 30 may push the second movable contact 34 and the second static contact 35 to be closed, thus connecting the upper main circuit (the first main circuit). 10031] Referring to Fig. 2, if it is desired to connect the lower main circuit (the second main circuit), the upper main circuit (the first main circuit) must be disconnected at first. When the operation mechanism is opened, the first main shaft 9 drives the second cantilever to anticlockwise rotate, and the second cantilever 10 drives, through the third shaft 11, the sliding block 12 to slide to the right; and the rightward sliding of the sliding block 12 drives, through the seventh shaft 19, the first connection rod 13 and the eighth shaft 20 to move to the right. Since the turntable 28 is not subjected to a thrust from the eighth shaft 20, the turntable may clockwise rotate; when the upper main circuit (the first main circuit) is connected, the energy of the first tension spring 5 has been stored; at this moment, the first tension spring 5 pulls the first cantilever 3 and the third main shaft 30 to anticlockwise rotate; the anticlockwise rotation of the first cantilever 3 pulls, through the first shaft 6, the third connection rod 29, and the second shaft 7, the turntable 28 to clockwise rotate; the second shaft 7 is located at the end, close to the third waist-shaped hole 38, of the first waist-shaped hole 36; the anticlockwise rotation of the third main shaft 30 may drive the second movable contact 34 and the second fixed contact 35 to be separated, thus disconnecting the upper main circuit (the first main circuit). 10032] Referring to Fig. 4, when the handle 15 is clockwise rotated, the handle 15 pushes the rotary plate 17 to clockwise rotate around the fourth shaft 14; the clockwise rotation of the rotary plate 17 drives, through the sixth shaft 18, the first connection rod 13 to anticlockwise rotate around the seventh shaft 19; and the anticlockwise rotation of the first connection rod 13 drives the eighth shaft 20 to be located below the third waist-shaped hole 38 of the turntable 28, thus proceeding to a state of preparing to close the lower main circuit (the second main circuit) shown in Fig. 4. 10033] Referring to Fig. 5, when the operation mechanism closes the lower main circuit (the second main circuit), the first main shaft 9 clockwise rotates, and drives the second cantilever 10 to clockwise rotate around the first main shaft 9 at the same time; the clockwise rotation of the second cantilever 10 drives, through the third shaft 11, the sliding block 12 to slide to the left; and the leftward sliding of the sliding block 12 drives, through the seventh shaft 19, the first connection rod 13 to move to the left at the same time. Since the turntable 28 can rotate only, the first connection rod 13 slides to the left to push, through the eighth shaft 20, the turntable 28 to clockwise rotate. The second main shaft 26 is fixed to the third cantilever 23, and the third cantilever 23 is connected with the turntable 28 through the ninth shaft 24, the second connection rod 25, and the tenth shaft 27; the clockwise rotation of the turntable 28 pulls, through the ninth shaft 24, the second connection rod 25, and the tenth shaft 27, the third cantilever 23 to anticlockwise rotate, and the second main shaft 26 also anticlockwise rotates; at this moment, the second shaft 7 on the third connection rod 29 is located at the end, away from the third waist-shaped hole 38, of the first waist-shaped hole 36 in the turntable 28; the tenth shaft 27 on the second connection rod 25 is located at the end, close to the third waist-shaped hole 38, of the second waist-shaped hole 37 in the turntable 28; a second tension spring 21 is pulled to an energy storage state; the anticlockwise rotation of the second main shaft 26 may push the first movable contact 32 and the first fixed contact 31 to be closed, thus connecting the lower main circuit (the second main circuit). 10034] Referring to Fig. 4, when the operation mechanism is opened, the first main shaft 9 drives the second cantilever 10 to anticlockwise rotate, and the second cantilever 10 drives, through the third shaft 11, the sliding block 12 to slide to the right; and the rightward sliding of the sliding block 12 drives, through the seventh shaft 19, the first connection rod 13 and the eighth shaft 20 to move to the right. Since the turntable 28 is not subjected to a thrust from the eighth shaft 20, the turntable 28 can anticlockwise rotate; when the lower main circuit (the second main circuit) is connected, the energy of the second tension spring 21 has been stored; at this moment, the second tension spring 21 pulls the third cantilever 23 and the second main shaft 26 to clockwise rotate; the clockwise rotation of the third cantilever 23 pulls, through the ninth shaft 24, the second connection rod 25, and the tenth shaft 27, the turntable 28 to anticlockwise rotate; the tenth shaft 27 is located at the end, close to the third waist-shaped hole 38, of the second waist-shaped hole 37; the clockwise rotation of the second main shaft 26 may drive the first movable contact 32 and the first fixed contact 31 to be separated, thus disconnecting the lower main circuit (the second main circuit).

10035] Although the invention has been disclosed as above in preferred embodiments, the embodiments are not intended to limit the invention. Any equivalent changes or modifications made without departing from the spirit and scope of the invention also belong to the protection scope of the invention. Therefore, the protection scope of the invention should be based on the content defined by the claims of this application as the standard.

Claims

1. A frame type integrated dual power supply, including a change-over mechanism, an operation mechanism and two groups of contact components, wherein the contact components include movable contacts and fixed contacts; the two movable contacts are connected with each other through a connection shaft; the connection shaft is provided with a rotating shaft; the two movable contacts can rotate around the rotating shaft serving as a center; one end of the change-over mechanism is provided with two branches separately connected with the movable contacts, and the other end of the change-over mechanism pre-selects a closing direction by means of shifting a handle; and the operation mechanism pushes the change-over mechanism to cause the change-over mechanism to push the fixed contact in the pre-selected closing direction, so that the contact component at the end is closed.

2. The frame type integrated dual power supply as recited in claim 1, wherein the change-over mechanism includes a handle and a turntable; the handle and the turntable are linked through a first connection rod mechanism; the turntable and one movable contact are linked through a second connection rod mechanism; and the turntable and the other movable contact are linked through a third connection rod mechanism.

3. The frame type integrated dual power supply as recited in claim 2, wherein the first connection rod mechanism includes a first connection rod and a rotary plate; the turntable is provided with a first waist-shaped hole; one end of the first connection rod is limited by the waist-shaped hole, and the other end of the first connection rod is hinged to the rotary plate; the middle portion of the first connection rod movably sleeves a rotating shaft; and the rotation of the rotary plate is driven by the handle.

4. The frame type integrated dual power supply according as recited in 2 or 3, wherein the second connection rod mechanism includes a second connection rod, a third cantilever and a second main shaft; the turntable is provided with a second waist-shaped hole; one end of the second connection rod is limited to the second waist-shaped hole, and the other end of the second connection rod is hinged to one end of the third cantilever; the other end of the third cantilever is fixed onto the second main shaft; a connection rod is further fixed on the second main shaft; the connection rod is connected with the fixed contacts, and pushes or pulls the fixed contacts according to the rotation of the second main shaft; the third cantilever is further connected with an elastic component stretching for energy storage; and the structure of the third connection rod mechanism is the same as the structure of the second connection rod mechanism.

5. The frame type integrated dual power supply as recited in claim 3, wherein the operation mechanism includes a first main shaft, a second cantilever and a sliding block; one end of the second cantilever is fixed onto the first main shaft, and the other end of the second cantilever is hinged to the sliding block; and the rotating shaft used for supporting the rotation of the rotary plate is arranged on the sliding block.

6. The frame type integrated dual power supply as recited in claim 4, wherein when a main circuit is closed, the corresponding elastic component stretches to store energy; and when the main circuit is opened, the energy in the elastic component is released.

7. The frame type integrated dual power supply as recited in claim 4, wherein the second waist-shaped hole in the turntable bends along a circumferential direction of the turntable.

8. The frame type integrated dual power supply as recited in claim 4, wherein the rotary plate is of an isosceles triangle, and a vertex of the rotary plate is connected with the first connection rod; and a bottom edge of the rotary plate abuts against the bottom of the handle.

9. The frame type integrated dual power supply as recited in claim 4 or 8, wherein the vertex of the rotary plate is provided with a waist-shaped hole; and the end portion of the first connection rod is limited to move in the waist-shaped hole.

10. The frame type integrated dual power supply as recited in claim 1, wherein the frame type integrated dual power supply is arranged on a body; the half upper part of the body is provided with the first group of contact component, and is an upper main circuit; when the part is closed, a main power supply is switched on; the half lower part of the body is provided with the other group of contact component, and is a lower main circuit; and when the part is closed, a backup power supply is switched on.