CN212810087U - Direct current dual supply change over switch contact system - Google Patents
Direct current dual supply change over switch contact system Download PDFInfo
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- CN212810087U CN212810087U CN202021867602.4U CN202021867602U CN212810087U CN 212810087 U CN212810087 U CN 212810087U CN 202021867602 U CN202021867602 U CN 202021867602U CN 212810087 U CN212810087 U CN 212810087U
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Abstract
The utility model relates to a contact system, especially a direct current dual supply change-over switch contact system. Including contact group subassembly, stationary contact subassembly and moving contact subassembly, contact group subassembly and stationary contact subassembly be movable contact and switch on, stationary contact subassembly and moving contact subassembly be movable contact and switch on. The contact synchronism is ensured, the breaking capacity of the fracture is improved, the rapid and reliable breaking electric arc of a contact system is ensured, the arc extinguishing performance of the direct-current dual-power-supply changeover switch is further improved, and the safety is better.
Description
Technical Field
The utility model relates to a contact system, especially a direct current dual supply change-over switch contact system.
Background
The existing dual-power automatic transfer switch is mostly arranged on an alternating current power utilization side, and the design of the direct current dual-power transfer switch has specific difficulties because the direct current does not have a natural zero crossing point, and the problems mainly comprise that: (1) higher direct voltage operating capability. A single stage switch of the same construction can operate at AC 690V but will typically not exceed DC 250V when used in a DC system. (2) Critical current breaking capability. The self-excitation field of the direct current low current is weak, the air blowing effect of the direct current low current is weak, the direct current arc cannot be extinguished at all only by means of arc discharge of contacts between fractures if the direct current low current is stopped between a positive contact and a negative contact without entering an arc extinguish chamber for a long time, the long-time low current arc can affect the service life of the switch, and the switch is burnt and even a short circuit fault is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve exist not enough among the prior art, provide a DC double power supply change-over switch contact system who improves the arc extinguishing performance.
The above technical problem of the present invention can be solved by the following technical solutions:
the utility model provides a direct current dual supply change over switch contact system, includes contact group subassembly, quiet contact subassembly and moving contact subassembly, contact group subassembly and quiet contact subassembly be movable contact and switch on, quiet contact subassembly and moving contact subassembly be movable contact and switch on.
Preferably, the contact group assembly comprises a first contact group, a second contact group, a third contact group, a fourth contact group and a contact group transmission shaft, the contact group transmission shaft is respectively in rotary connection with the first contact group, the second contact group, the third contact group and the fourth contact group through plastic connecting rods, the bottom end of each plastic connecting rod is in rotary connection with a metal connecting rod, each metal connecting rod drives a copper-based contact of the corresponding contact group to be in rotary connection, the outer end of the bottom end of each copper-based contact of the corresponding contact group is provided with a contact group silver-based contact, the contact group transmission shaft rotates to drive the plastic connecting rods to rotate, each plastic connecting rod drives a metal connecting rod to rotate, each metal connecting rod drives a copper-based contact of the corresponding contact group to rotate, each copper-based contact of the corresponding contact group drives a silver-based contact of the corresponding contact group to move up and down, and the first contact group, the second contact group, the third contact group and the contact group transmission shaft, The fourth contact groups are distributed at intervals;
the static contact component comprises a static contact connecting row, two ends of the static contact connecting row are respectively provided with a static contact copper-based contact, the upper part of the static contact copper-based contact is provided with a static contact silver-based contact, and the static contact silver-based contact at the inner end is in movable contact conduction with the contact group silver-based contact;
the number of the fixed contact assemblies is 4, the 4 fixed contact assemblies are respectively a first fixed contact, a second fixed contact, a third fixed contact and a fourth fixed contact, and the first fixed contact is connected and conducted with the second fixed contact;
the moving contact component comprises a first moving contact, a second moving contact, a third moving contact, a fourth moving contact and a moving contact transmission shaft, wherein the moving contact transmission shaft is respectively and rotatably connected with the first moving contact, the second moving contact, the third moving contact and the fourth moving contact through a moving contact plastic connecting rod, the bottom end of the moving contact plastic connecting rod is rotatably connected with a moving contact metal connecting rod, the moving contact metal connecting rod drives a moving contact copper-based contact to be rotatably connected, a moving contact silver-based contact is arranged at the outer end of the bottom end of the moving contact copper-based contact, the moving contact transmission shaft rotates to drive the moving contact plastic connecting rod to rotate, the moving contact plastic connecting rod drives the moving contact metal connecting rod to rotate, the moving contact metal connecting rod drives the copper-based moving contact to rotate, and the moving contact copper-, the static contact silver-based contact at the outer end is in movable contact conduction with the moving contact silver-based contact;
the first moving contact and the second moving contact are distributed at intervals, the second moving contact and the third moving contact are conducted through a connecting plate, and the third moving contact and the fourth moving contact are distributed at intervals;
and the bottom of the second moving contact and the bottom of the third moving contact are respectively provided with a moving contact connecting row extending outwards.
The contact system adopts a four-fracture design, the four groups of contacts have equal intervals, the contacts are connected in series on a transmission shaft and perform opening and closing actions along with the rotation of a main shaft, and because the four groups of contacts are arranged in a mirror image manner, the overtravel, final pressure and other parameters of the contacts are the same, and each pole of contact can share the same voltage and the contact arcing energy is the same; the contact synchronism is ensured, the breaking capacity of the fracture is improved, the rapid and reliable breaking electric arc of a contact system is ensured, the arc extinguishing performance of the direct-current dual-power-supply changeover switch is further improved, and the safety is better.
The contact system mainly comprises four groups of contacts in sequence 1-4, wherein the contact group comprises a plastic connecting rod, a metal connecting rod, a contact group copper-based contact and a contact group silver-based contact, the first contact group is connected with the transmission shaft through the plastic connecting rod and is distributed on the transmission shaft with the second contact group, the third contact group and the fourth contact group in an array mode, and the contact group silver-based contact synchronously acts to ensure the action consistency of each contact group.
The static contact is composed of a static contact silver-based contact, a static contact copper-based contact and a static contact connecting row, and the first static contact is connected with the second static contact;
the second moving contact is connected with the third moving contact, the second fixed contact extends out of the moving contact connecting row, the third fixed contact extends out of the moving contact connecting row to serve as a load outgoing line, and finally the string is in a four-fracture design structure. Because the four groups of contacts are arranged in a mirror image manner, the parameters of over travel, final pressure and the like of the contacts are the same, each pole of contact can share the same voltage, and the arcing energy of the contacts is the same; the contact synchronism is ensured, the breaking capacity of the fracture is improved, the rapid and reliable breaking electric arc of a contact system is ensured, the arc extinguishing performance of the direct-current dual-power-supply changeover switch is further improved, and the safety is better.
Drawings
FIG. 1 is an electrical wiring diagram of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example 1: as shown in the figure, a direct current dual supply change over switch contact system, includes contact group subassembly, stationary contact subassembly and moving contact subassembly, contact group subassembly and stationary contact subassembly be movable contact and switch on, stationary contact subassembly and moving contact subassembly be movable contact and switch on.
The contact group assembly comprises a first contact group 1, a second contact group 2, a third contact group 3, a fourth contact group 4 and a contact group transmission shaft 5, wherein the contact group transmission shaft 5 is respectively connected with the first contact group 1, the second contact group 2, the third contact group 3 and the fourth contact group 4 in a rotating way through a plastic connecting rod 6, the bottom end of the plastic connecting rod 6 is connected with a metal connecting rod 7 in a rotating way, the metal connecting rod 7 drives a contact group copper-based contact 8 in a rotating way, the outer end of the bottom end of the contact group copper-based contact 8 is provided with a contact group silver-based contact 9, the contact group transmission shaft 5 rotates to drive the plastic connecting rod 6 to rotate and the plastic connecting rod 6 drives the metal connecting rod 7 to rotate, the metal connecting rod 7 drives a contact group copper-based contact 8 to rotate, the contact group copper-based contact 8 drives the contact group silver-based contact 9 to move up and down, the first contact group 1, the second contact group 2, the third contact group 3 and the fourth contact group 4 are distributed at intervals;
the static contact component comprises a static contact connecting row 10, two ends of the static contact connecting row 10 are respectively provided with a static contact copper-based contact 11, the upper part of the static contact copper-based contact 11 is provided with a static contact silver-based contact 12, and the static contact silver-based contact 12 at the inner end is in movable contact conduction with the contact group silver-based contact 9;
the number of the static contact assemblies is 4, the 4 static contact assemblies are respectively a first static contact 13, a second static contact 14, a third static contact 15 and a fourth static contact 16, and the first static contact 13 is connected and conducted with the second static contact 14;
the moving contact component comprises a first moving contact 17, a second moving contact 18, a third moving contact 19, a fourth moving contact 20 and a moving contact transmission shaft 21, the moving contact transmission shaft 21 is respectively connected with the first moving contact 17, the second moving contact 18, the third moving contact 19 and the fourth moving contact 20 in a rotating way through a moving contact plastic connecting rod 22, the bottom end of the moving contact plastic connecting rod 22 is connected with a moving contact metal connecting rod 23 in a rotating way, the moving contact metal connecting rod 23 drives a moving contact copper-based contact 24 to be connected in a rotating way, the outer end of the bottom end of the moving contact copper-based contact 24 is provided with a moving contact silver-based contact 25, the moving contact transmission shaft 21 rotates to drive the moving contact plastic connecting rod 22 to rotate, the moving contact plastic connecting rod 22 drives the moving contact metal connecting rod 23 to rotate, the moving contact metal connecting rod 23 drives the moving contact copper-based contact 24 to rotate, the static contact silver-based contact 12 at the outer end is in movable contact conduction with the moving contact silver-based contact 25;
the first moving contact 17 and the second moving contact 18 are distributed at intervals, the second moving contact 18 and the third moving contact 19 are conducted through a connecting plate 26, and the third moving contact and the fourth moving contact 19 are distributed at intervals 20;
the bottom of the second moving contact 18 and the bottom of the third moving contact 19 are respectively provided with a moving contact connecting row 27 extending outwards.
Claims (2)
1. The utility model provides a direct current duplicate supply change over switch contact system which characterized in that: including contact group subassembly, stationary contact subassembly and moving contact subassembly, contact group subassembly and stationary contact subassembly be movable contact and switch on, stationary contact subassembly and moving contact subassembly be movable contact and switch on.
2. The direct current dual power transfer switch contact system of claim 1, wherein: the contact group assembly comprises a first contact group (1), a second contact group (2), a third contact group (3), a fourth contact group (4) and a contact group transmission shaft (5), wherein the contact group transmission shaft (5) is respectively in rotating connection with the first contact group (1), the second contact group (2), the third contact group (3) and the fourth contact group (4) through a plastic connecting rod (6), the bottom end of the plastic connecting rod (6) is in rotating connection with a metal connecting rod (7), the metal connecting rod (7) drives a contact group copper-based contact (8) to be in rotating connection, the outer end of the bottom end of the contact group copper-based contact (8) is provided with a contact group silver-based contact (9), the contact group transmission shaft (5) rotates to drive the plastic connecting rod (6) to rotate, the plastic connecting rod (6) drives the metal connecting rod (7) to rotate, and the metal connecting rod (7) drives the contact group copper-based contact (8) to rotate, the contact group copper-based contact (8) drives the contact group silver-based contact (9) to move up and down, and the first contact group (1), the second contact group (2), the third contact group (3) and the fourth contact group (4) are distributed at intervals;
the static contact component comprises a static contact connecting row (10), two ends of the static contact connecting row (10) are respectively provided with a static contact copper-based contact (11), the upper part of the static contact copper-based contact (11) is provided with a static contact silver-based contact (12), and the static contact silver-based contact (12) at the inner end is in movable contact conduction with the contact group silver-based contact (9);
the number of the static contact assemblies is 4, the 4 static contact assemblies are respectively a first static contact (13), a second static contact (14), a third static contact (15) and a fourth static contact (16), and the first static contact (13) is connected and conducted with the second static contact (14);
the moving contact component comprises a first moving contact (17), a second moving contact (18), a third moving contact (19), a fourth moving contact (20) and a moving contact transmission shaft (21), the moving contact transmission shaft (21) is respectively connected with the first moving contact (17), the second moving contact (18), the third moving contact (19) and the fourth moving contact (20) in a rotating way through a moving contact plastic connecting rod (22), the bottom end of the moving contact plastic connecting rod (22) is connected with a moving contact metal connecting rod (23) in a rotating way, the moving contact metal connecting rod (23) drives a moving contact copper-based contact (24) to be connected in a rotating way, a moving contact silver-based contact (25) is arranged at the outer end of the bottom end of the copper-based moving contact (24), the moving contact transmission shaft (21) rotates to drive the moving contact plastic connecting rod (22) to rotate, and the moving contact plastic connecting rod (22) drives the, the moving contact metal connecting rod (23) drives the moving contact copper-based contact (24) to rotate, the moving contact copper-based contact (24) drives the moving contact silver-based contact (25) to move up and down, and the static contact silver-based contact (12) at the outer end is in movable contact conduction with the moving contact silver-based contact (25);
the first moving contact (17) and the second moving contact (18) are distributed at intervals, the second moving contact (18) and the third moving contact (19) are communicated through a connecting plate (26), and the third moving contact (19) and the fourth moving contact (20) are distributed at intervals;
the bottom of the second movable contact (18) and the bottom of the third movable contact (19) are respectively provided with a movable contact connecting row (27) extending outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021867602.4U CN212810087U (en) | 2020-08-31 | 2020-08-31 | Direct current dual supply change over switch contact system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021867602.4U CN212810087U (en) | 2020-08-31 | 2020-08-31 | Direct current dual supply change over switch contact system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212810087U true CN212810087U (en) | 2021-03-26 |
Family
ID=75088118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021867602.4U Active CN212810087U (en) | 2020-08-31 | 2020-08-31 | Direct current dual supply change over switch contact system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212810087U (en) |
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2020
- 2020-08-31 CN CN202021867602.4U patent/CN212810087U/en active Active
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