CN204857599U - Modular open dynamic relay system - Google Patents
Modular open dynamic relay system Download PDFInfo
- Publication number
- CN204857599U CN204857599U CN201520571025.7U CN201520571025U CN204857599U CN 204857599 U CN204857599 U CN 204857599U CN 201520571025 U CN201520571025 U CN 201520571025U CN 204857599 U CN204857599 U CN 204857599U
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- connecting rod
- fixed
- fixed contact
- contacts
- contact
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- 229920001342 Bakelite® Polymers 0.000 claims abstract description 9
- 239000004637 bakelite Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 13
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Thermally Actuated Switches (AREA)
Abstract
The utility model belongs to the electric power field, concretely relates to modular open dynamic relay system. Opening dynamic relay including the combination formula, opening dynamic relay and include the shell, be equipped with two stationary contacts on the shell, two stationary contacts belows are equipped with the sheetmetal, and the sheetmetal both ends correspond with two stationary contacts and set up two movable contacts, swing joint connecting rod in the middle of the sheetmetal, and the sheetmetal below is equipped with armature, armature and connecting rod swing joint, all on the fixed shell, the connecting rod outer lane sets up the spring, opens dynamic relay inside and still is equipped with the coil for the both ends of connecting rod, still include the bakelite box, inside resistance wire, butterfly piece and two stationary contacts of being equipped with of bakelite box, butterfly piece correspond with two stationary contacts and set up two movable contacts, set up adjusting screw in the middle part of the butterfly piece. The utility model discloses a low current starting heavy current, starting switch's frequent damage is avoided to the protection motor, thermal protection function still has, can the auto -power -off when electric current increase and heat dissipation are bad, and the security is high.
Description
Technical field
The utility model belongs to power domain, is specifically related to a kind of composite type starting relay system.
Background technology
Relay is a kind of electronic control device, is usually applied in automatic control circuit, plays the effects such as automatic adjustment, safeguard protection, change-over circuit in circuit.And in circuit, electric current is excessive or when dispelling the heat bad, easily produces security incident.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of composite type starting relay system, adopts low current to start big current, and protection motor, avoids the frequent breakage of starting switch; Have heat protection function simultaneously, to increase and can auto-breaking when dispelling the heat bad when electric current, fail safe is high.
Composite type starting relay system described in the utility model, comprise composite type starting relay, starting relay comprises shell, shell is provided with two fixed contacts, be respectively the first fixed contact and the second fixed contact, sheet metal is provided with below two fixed contacts, sheet metal two ends are corresponding with two fixed contacts arranges the first moving contact and the second moving contact, sheet metal intermediate active connects connecting rod, armature is provided with below sheet metal, armature is flexibly connected with connecting rod, on the equal fixed housing in two ends of connecting rod, connecting rod outer ring arranges spring, starting relay inside is also provided with coil, composite type starting relay also comprises bakelite box, bakelite box inside is provided with resistance wire, butterfly sheet and two fixed contacts, two fixed contacts are respectively the 3rd fixed contact and the 4th fixed contact, butterfly sheet is corresponding with two fixed contacts arranges two moving contacts, be respectively the 3rd moving contact and the 4th moving contact, in the middle part of butterfly sheet, set screw is set.
4th fixed contact is connected with resistance wire, power supply, switch, Working winding, coil and the 3rd fixed contact successively; Second moving contact is connected with the 3rd fixed contact, and start winding one end and be connected with the first fixed contact, the other end is connected with switch, and the second fixed contact is connected with Working winding.
Connecting rod is positioned at the centre of sheet metal, is also positioned at the centre of armature, and adopt prior art to connect, make sheet metal can be up and down along connecting rod, armature also can be up and down along connecting rod.
During use, open switch, switch on power, very large by the electric current of coil, stronger magnetic field is produced in the coil of starting relay, armature is inhaled, and armature promotes spring and moves upward, under the action of the spring, first moving contact and the first fixed contact are connected, second moving contact and the second fixed contact are connected, and make the starting winding of motor also switch on power, thus motor is started rapidly to rated speed after connection.After motor enters normal operation, suddenly motor rated current is reduced to again by the electric current in starting relay coil, therefore the field weakening produced, first moving contact and the first fixed contact are disconnected, second moving contact and the second fixed contact disconnect, start winding power-off, Working winding normally runs.During normal use, the 3rd fixed contact contacts with the 3rd moving contact, and the 4th fixed contact contacts with the 4th moving contact, when in circuit, electric current is excessive, increased by the electric current of resistance wire, caloric value increases, toast butterfly sheet, or when system radiating is bad, make butterfly sheet because crossing thermal expansion deformation until oppositely arch, the 3rd fixed contact is separated with the 3rd moving contact, 4th fixed contact is separated with the 4th moving contact, circuit is cut off, and butterfly sheet thickness is 0.1 millimeter, and butterfly sheet is metal material.
In sum, the utility model has the following advantages:
(1) the utility model adopts low current to start big current, and protection motor, avoids the frequent breakage of starting switch;
(2) the utility model also has heat protection function, increases and can auto-breaking when dispelling the heat bad when electric current, and fail safe is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-shell, 2-first fixed contact, 3-second fixed contact, 4-sheet metal, 5-first moving contact, 6-second moving contact, 7-connecting rod, 8-armature, 9-spring, 10-coil, 11-bakelite box, 12-resistance wire, 13-butterfly sheet, 14-the 4th fixed contact, 15-the 3rd fixed contact, 16-the 3rd moving contact, 17-the 4th moving contact, 18-set screw, 19-power supply, 20-switch, 21-Working winding, 22-starts winding.
Embodiment
Below in conjunction with embodiment, the utility model is described further.
Embodiment
A kind of composite type starting relay system, as shown in Figure 1, comprise composite type starting relay, starting relay comprises shell 1, shell 1 is provided with two fixed contacts, be respectively the first fixed contact 2 and the second fixed contact 3, sheet metal 4 is provided with below two fixed contacts, sheet metal 4 two ends are corresponding with two fixed contacts arranges the first moving contact 5 and the second moving contact 6, sheet metal 4 intermediate active connects connecting rod 7, armature 8 is provided with below sheet metal 4, armature 8 is flexibly connected with connecting rod 7, on the equal fixed housing 1 in two ends of connecting rod 7, connecting rod 7 outer ring arranges spring 9, starting relay inside is also provided with coil 10, composite type starting relay also comprises bakelite box 11, bakelite box 11 inside is provided with resistance wire 12, butterfly sheet 13 and two fixed contacts, two fixed contacts are respectively the 3rd fixed contact 15 and the 4th fixed contact 14, corresponding with two fixed contacts on butterfly sheet 13 two moving contacts are set, be respectively the 3rd moving contact 16 and the 4th moving contact 17, set screw 18 is set in the middle part of butterfly sheet 13.
4th fixed contact 14 is connected with resistance wire 12, power supply 19, switch 20, Working winding 21, coil 10 and the 3rd fixed contact 15 successively; Second moving contact 6 is connected with the 3rd fixed contact 15, and start winding 22 one end and be connected with the first fixed contact 2, the other end is connected with switch 20, and the second fixed contact 3 is connected with Working winding 21.
During use, open switch 20, switch on power 19, very large by the electric current of coil 10, stronger magnetic field is produced in the coil 10 of starting relay, armature 8 is dynamic by suction, and armature 8 promotes spring 9 and moves upward, under the effect of spring 9, first moving contact 5 and the first fixed contact 2 are connected, second moving contact 6 and the second fixed contact 3 are connected, and make the starting winding 22 of motor also switch on power 19, thus motor is started rapidly to rated speed after connection.After motor enters normal operation, suddenly motor rated current is reduced to again by the electric current in starting relay coil 10, therefore the field weakening produced, first moving contact 5 and the first fixed contact 2 are disconnected, second moving contact 6 and the second fixed contact 3 disconnect, start winding 22 power-off, Working winding 21 normally runs.During normal use, 3rd fixed contact 15 contacts with the 3rd moving contact 16,4th fixed contact 14 contacts with the 4th moving contact 17, when in circuit, electric current is excessive, increased by the electric current of resistance wire 12, caloric value increases, toast butterfly sheet 13, or when system radiating is bad, make butterfly sheet 13 because crossing thermal expansion deformation until oppositely arch, the 3rd fixed contact 15 is separated with the 3rd moving contact 16,4th fixed contact 14 is separated with the 4th moving contact 17, circuit is cut off, and butterfly sheet 13 thickness is 0.1 millimeter, and butterfly sheet 13 is metal material.
Claims (2)
1. a composite type starting relay system, it is characterized in that: comprise composite type starting relay, starting relay comprises shell (1), shell (1) is provided with two fixed contacts, be respectively the first fixed contact (2) and the second fixed contact (3), sheet metal (4) is provided with below two fixed contacts, sheet metal (4) two ends are corresponding with two fixed contacts arranges the first moving contact (5) and the second moving contact (6), sheet metal (4) intermediate active connects connecting rod (7), sheet metal (4) below is provided with armature (8), armature (8) is flexibly connected with connecting rod (7), on the equal fixed housing in the two ends (1) of connecting rod (7), connecting rod (7) outer ring arranges spring (9), starting relay inside is also provided with coil (10), composite type starting relay also comprises bakelite box (11), bakelite box (11) inside is provided with resistance wire (12), butterfly sheet (13) and two fixed contacts, two fixed contacts are respectively the 3rd fixed contact (15) and the 4th fixed contact (14), butterfly sheet (13) is upper correspondingly with two fixed contacts arranges two moving contacts, be respectively the 3rd moving contact (16) and the 4th moving contact (17), butterfly sheet (13) middle part arranges set screw (18).
2. composite type starting relay system according to claim 1, is characterized in that: the 4th fixed contact (14) is connected with resistance wire (12), power supply (19), switch (20), Working winding (21), coil (10) and the 3rd fixed contact (15) successively; Second moving contact (6) is connected with the 3rd fixed contact (15), start winding (22) one end to be connected with the first fixed contact (2), the other end is connected with switch (20), and the second fixed contact (3) is connected with Working winding (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571025.7U CN204857599U (en) | 2015-07-31 | 2015-07-31 | Modular open dynamic relay system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571025.7U CN204857599U (en) | 2015-07-31 | 2015-07-31 | Modular open dynamic relay system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204857599U true CN204857599U (en) | 2015-12-09 |
Family
ID=54748126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520571025.7U Active CN204857599U (en) | 2015-07-31 | 2015-07-31 | Modular open dynamic relay system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204857599U (en) |
-
2015
- 2015-07-31 CN CN201520571025.7U patent/CN204857599U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |