CN202021542U - Portable alternating current pulse type grinder for contact of relay - Google Patents
Portable alternating current pulse type grinder for contact of relay Download PDFInfo
- Publication number
- CN202021542U CN202021542U CN2011200932525U CN201120093252U CN202021542U CN 202021542 U CN202021542 U CN 202021542U CN 2011200932525 U CN2011200932525 U CN 2011200932525U CN 201120093252 U CN201120093252 U CN 201120093252U CN 202021542 U CN202021542 U CN 202021542U
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- relay
- pulse
- circuit
- output end
- contact
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Abstract
The utility model discloses a portable alternating current pulse type grinder for a contact of a relay, which comprises a direct current conversion circuit, a pulse triggering control circuit and a two-way current source output circuit, wherein the input end of the direct current conversion circuit is connected with a direct current power supply, the direct current conversion circuit is further provided with a first voltage output end and a second voltage output end, the first voltage output end is connected with the pulse triggering control circuit, and the second voltage output end is connected with the contact of the relay through the two-way current source output circuit; the output end of the pulse triggering control circuit is connected with the two-way current source output circuit and the pulse triggering control circuit is used for controlling and outputting pulse current; and the second voltage output end of the direct current conversion circuit is further connected with a relay coil and the direct current conversion circuit is used for controlling the closing of the contact of the relay. The portable alternating current pulse type grinder for the contact of the relay has the following obvious advantages: an oxidation film or defilement of the contact of the relay can be cleared on an application scene of the relay under the situation of not decomposing the relay so as to repair the conductive performance of the contact of the relay.
Description
Technical field
The utility model relates to the grinding prosthetic device of relay contact, particularly a kind of portable alternating-current pulse formula relay contact mill.
Background technology
At present, in the electric automatization field, switching regulator element miscellaneous is extensively used.The contact contact-making surface of switch element through regular meeting because oxidation, carbon distribution and stained and lost efficacy or performance descends.Traditional restorative procedure is to decompose after the element removed, takes out contact, and contact contact working face is carried out the artificial mechanism polishing.Can only scrap replacing for the hermetic switchgear of part.Traditional polishing process need decompose and assembling again switch element, the complicated operation labor intensive and again the fit clearance after the assembling be difficult to guarantee to return to original optimum state.Polishing also has extra loss to the contact copper face, and contact is only done once and just need be scrapped to twice polishing reparation usually, and the contact polishing is also higher to operating personnel's specification requirement.
Summary of the invention
At above-mentioned defective of the prior art, the purpose of this utility model is to provide a kind of portable alternating-current pulse formula relay contact mill.
The technical scheme that the utility model adopted: a kind of portable alternating-current pulse formula relay contact mill, comprise DC transfer circuit, Pulse-trigger control circuit and bidirectional current source follower circuit, the input of described DC transfer circuit is connected with dc source, and be provided with first voltage output end and second voltage output end, its first voltage output end is connected with the Pulse-trigger control circuit, and second voltage output end is connected with relay contact by the bidirectional current source follower circuit; The output of described Pulse-trigger control circuit is connected with the bidirectional current source follower circuit, is used for control output pulse current; Second voltage output end of described DC transfer circuit also is connected with relay coil, is used for the closure of control relay contact.
The output voltage of first voltage output end of above-mentioned DC transfer circuit is direct current 5V; The output voltage of second voltage output end is direct current 110V.
Above-mentioned dc source is a storage battery power supply, so that carry.
The pulse current of above-mentioned bidirectional current source follower circuit output is positive and negative bidirectional pulse electric current.
Distinguishing feature of the present utility model is to be implemented in the site of deployment of relay, under the situation of not decomposing relay, and to the oxide-film or stained cleaning of relay contact, thus the electric conductivity of reparation relay contact.Overcome existing alternating-current pulse formula relay and ground the promptness problem that workbench is repaired relay, and reduced the deposit of turnover part and the expenditure of reduction maintenance surcharge etc., avoided complicated step such as artificial mechanism polishing.
Description of drawings
Fig. 1 is stained and the equivalent circuit of the closed contact of oxidation;
Fig. 2 is a schematic block circuit diagram of the present utility model;
Fig. 3 is physical circuit figure of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing concrete structure of the present utility model is further described.
On the conductive contact surfaces of contacts such as electric switch, relay, dirt and local the air gap on the closed contact have formed a series of little electric capacity, and the copper-cupric oxide structure at the oxidation copper film place different with dirt, its rectifying effect has formed a series of equivalent diode, for a pair of equivalent-circuit model that has oxidation, stained closed contact is a capacitance-resistance diode parallel circuit, as shown in Figure 1.When repairing contact, because rectifying effect oxidation copper film can not be fully breakdown by unidirectional DC pulse.And on resistance, form voltage drop by applying the alternating-current pulse electric current, form charging voltage at the equivalent capacity two ends, when voltage greater than stained equivalent capacity and puncture the equivalent diode of withstand voltage and cupric oxide when withstand voltage, stained and oxide layer will be punctured by electric current and form spark discharge, the stained thing and the Cu oxide that adhere to can be cleaned out by electric spark, and the metal covering of contact or the coat of metal then can not be subjected to too big wearing and tearing.Because the equivalent diode that oxide forms has directionality, therefore, applies the weakness that alternating-current pulse can overcome dc pulse current.
As shown in Figure 2, portable alternating-current pulse formula relay contact mill described in the utility model, comprise DC transfer circuit (or claiming the DC/DC booster circuit), Pulse-trigger control circuit and bidirectional current source follower circuit, the input of described DC transfer circuit is connected with dc source (battery), and be provided with first voltage output end (DC5V) and second voltage output end (DC110V), its first voltage output end is connected with the Pulse-trigger control circuit, and second voltage output end is connected with relay contact by the bidirectional current source follower circuit; The output of described Pulse-trigger control circuit is connected with the bidirectional current source follower circuit, is used for control output pulse current (alternating-current pulse electric current); Second voltage output end of described DC transfer circuit also is connected with relay coil, is used for the closure of control relay contact.This mill also is provided with guidance panel, is used for switchgear, adjusts the amplitude, pulsewidth of alternating-current pulse electric current, the umber of pulse that applies of action once, and the output switch is used for applying of control impuls electric current.
During use, the out splice going splice of bidirectional current source follower circuit is connected on the corresponding binding post of relay contact to be repaired, second voltage output end of DC transfer circuit is connected on the binding post of relay coil, and adjust to the load voltage value of coil, console switch, DC transfer circuit arrives the sealing voltage that relay needs with the boost in voltage of battery, and generates the operating voltage that bidirectional current source follower circuit (alternating-current pulse current source) needs.Wherein, the DC transfer circuit output DC is pressed onto on the relay coil, closed contact (as normally open contact) to be repaired; The bidirectional current source follower circuit then applies specific size to the closed contact that needs place cleaning alternating-current pulse electric current grinds reparation.
As shown in Figure 3, wherein, battery (DC18V), DC/DC DC transfer circuit and support capacitor C 1 are formed dc transformating power, and the DC/DC DC transfer circuit is converted to dc source 110V (connecing second voltage output end) and dc source 5V (connecing first voltage output end) with dc source 18V.Triode T1, T2, diode D1, photo-coupler PCI, PC2, and resistance R 1～R6 formed the bidirectional current source follower circuit.In addition, with time base circuit 555 (IC1) is that core and switch S 1, capacitor C 2, C3, resistance R 8 have been formed single positive pulse trigger control circuit, time base circuit 555 (IC2) has been formed single negative pulse trigger control circuit with switch S 2, capacitor C 4, C5, resistance R 9, is used for driving control photo-coupler PCI and PC2.By adjusting the resistance of resistance R 6, can adjust the size of bidirectional current source follower circuit output current, adjust the resistance of resistance R 8 and R9, can adjust the output width of positive and negative pulse respectively, switch S 1 is used to trigger the output of positive pulse, switch S 2 is used to trigger the output of negative pulse, and a pulse is once exported in every action, and switch S 3 is used for the closed of control relay or disconnects.Binding post V0, G0 are used to connect relay contact to be polished, and binding post 5,6 is used to connect pending relay coil (this circuit disables is closed simultaneously with switch S 1, S2).
The utility model carries out electric spark grinding by using the alternating-current pulse electric current to relay contact, be implemented in the site of deployment of relay, under the situation of not decomposing relay, to the oxide-film or stained cleaning of relay contact, thus the electric conductivity of reparation relay contact.
Claims (5)
1. portable alternating-current pulse formula relay contact mill, it is characterized in that, comprise DC transfer circuit, Pulse-trigger control circuit and bidirectional current source follower circuit, the input of described DC transfer circuit is connected with dc source, and be provided with first voltage output end and second voltage output end, its first voltage output end is connected with the Pulse-trigger control circuit, and second voltage output end is connected with relay contact by the bidirectional current source follower circuit; The output of described Pulse-trigger control circuit is connected with the bidirectional current source follower circuit, is used for control output pulse current; Second voltage output end of described DC transfer circuit also is connected with relay coil, is used for the closure of control relay contact.
2. according to the described portable alternating-current pulse formula relay contact mill of claim 1, it is characterized in that the output voltage of first voltage output end of described DC transfer circuit is direct current 5V.
3. according to the described portable alternating-current pulse formula relay contact mill of claim 1, it is characterized in that the output voltage of second voltage output end of described DC transfer circuit is direct current 110V.
4. according to the described portable alternating-current pulse formula relay contact mill of claim 1, it is characterized in that described dc source is a storage battery power supply.
5. according to the described portable alternating-current pulse formula relay contact mill of claim 1, it is characterized in that the pulse current of described bidirectional current source follower circuit output is positive and negative bidirectional pulse electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200932525U CN202021542U (en) | 2011-04-01 | 2011-04-01 | Portable alternating current pulse type grinder for contact of relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200932525U CN202021542U (en) | 2011-04-01 | 2011-04-01 | Portable alternating current pulse type grinder for contact of relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202021542U true CN202021542U (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200932525U Expired - Lifetime CN202021542U (en) | 2011-04-01 | 2011-04-01 | Portable alternating current pulse type grinder for contact of relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202021542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610382A (en) * | 2014-11-13 | 2016-05-25 | 博泽哈尔施塔特汽车零件两合公司 | Method for operating electromotive adjusting device, and electromotive adjusting device |
-
2011
- 2011-04-01 CN CN2011200932525U patent/CN202021542U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610382A (en) * | 2014-11-13 | 2016-05-25 | 博泽哈尔施塔特汽车零件两合公司 | Method for operating electromotive adjusting device, and electromotive adjusting device |
| CN105610382B (en) * | 2014-11-13 | 2019-11-05 | 博泽哈尔施塔特汽车零件两合公司 | For running the method and electric adjusting device of electric adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111102 |