CN202272647U - Control circuit and crane using control circuit - Google Patents
Control circuit and crane using control circuit Download PDFInfo
- Publication number
- CN202272647U CN202272647U CN 201120373924 CN201120373924U CN202272647U CN 202272647 U CN202272647 U CN 202272647U CN 201120373924 CN201120373924 CN 201120373924 CN 201120373924 U CN201120373924 U CN 201120373924U CN 202272647 U CN202272647 U CN 202272647U
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- contactor
- counting device
- enabling counting
- control circuit
- rotating
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Abstract
The utility model provides a control circuit of an alternate current contactor and a crane using the control circuit. The crane comprises a mechanism breaker, a mechanism motor, a forward rotation alternate current contactor corresponding to the mechanism motor, a backward rotation alternate current contactor and a starting counter. A data input end of the starting counter is serially connected onto the back of another auxiliary normally opened contact of the forward rotation alternate current contactor, and a normally closed contact of the starting counter is serially connected above a coil of the forward rotation alternate current contactor for counting the opening and closing times of a main contact of the forward rotation alternate current contactor. When the starting counter reaches set times, the normally closed contact of the starting counter can be cut off so as to lead the forward rotation alternate current contactor not to be capable of working, then the forward rotation alternate current contactor and the backward rotation alternate current contactor can be performed with maintenance, service life of the alternate current contactors can be prolonged, and stable operation of the crane can be ensured.
Description
Technical field
The utility model relates to a kind of control circuit and uses the hoisting crane of above-mentioned control circuit.
Background technology
The rotating AC contactor needs to carry out continually under the situation of normal operation deciliter, per hour deciliters hundreds of times and even more than thousand times, deciliter number of times of AC contactor has determined its life-span length.Existing control circuit comprises just changes ac contactor control circuit and counter-rotating ac contactor control circuit, all includes auto-lock function, is interlocking between the rotating AC contactor.But existing this ac contactor control circuit could be found after having only AC contactor adhesion by the time, and AC contactor has been caused damage, has reduced AC contactor service life.
Many bridges (door) formula hoisting crane hoist with translation mechanism in; The rotating AC contactor need close power machine continually under the situation of normal operation; Per hour break-make is hundreds of time and even more than thousand times, deciliter number of times of AC contactor has determined its life-span length.The lifting mechanism of existing bridge (door) formula hoisting crane and the positive and negative ac contactor control circuit of translation mechanism all include auto-lock function; And be interlocking between the positive and negative AC contactor; The rotating AC contactor that can guarantee hoisting crane can not connected simultaneously; To avoid short circuit, cause crane motor to damage.But the hoisting crane that uses this ac contactor control circuit could be found after only can waiting until its AC contactor adhesion, not only AC contactor has been caused damage, has also shortened the service life of crane motor greatly.
The utility model content
The purpose of the utility model is to provide a kind of control circuit of AC contactor, can before AC contactor sticks together, maintain it.
Another purpose of the utility model is to provide a kind of hoisting crane that uses above-mentioned control circuit.
For realizing above-mentioned purpose; The utility model provides a kind of control circuit that is applicable to hoisting crane; The control circuit that comprises the control circuit of just delivering the stream contactless switch and the AC contactor that reverses; Be interlocking between the rotating AC contactor wherein; The auxiliary normally closed contact of just delivering the stream contactless switch is connected in the counter-rotating AC contactor, and the auxiliary normally closed contact of counter-rotating AC contactor is connected on just to be delivered in the stream contactless switch, and the described ac contactor control circuit that just changeing also comprises an enabling counting device; The data input pin of this enabling counting device is connected on just delivers another auxiliary open contact back of stream contactless switch, and the normally closed contact of enabling counting device is connected on the top of just delivering the stream contactless coil.
Described enabling counting device is provided with enabling counting device reset button, and this reset button is connected in parallel in the control loop of enabling counting device.
When stream Contactor Starting button is just being delivered in startup; The auxiliary open contact of just delivering the stream contactless switch is closed; The enabling counting device can align delivers the automatic counting of stream contactless switch 1 time, and when the enabling counting device reached the number of times that sets, the normally closed contact of enabling counting device broke off; The coil that causes just delivering the stream contactless switch can't be switched on, and just can flow contactless switch to reciprocal cross and maintain this moment.
For realizing another purpose; The utility model also provides a kind of hoisting crane that uses above-mentioned control circuit; Comprise translation motor, bridge motor and respectively with they pairing rotating ac contactor control circuits; The auxiliary normally closed contact of just delivering the stream contactless switch is connected in the counter-rotating AC contactor, and the auxiliary normally closed contact of counter-rotating AC contactor is connected on just to be delivered in the stream contactless switch, and the described ac contactor control circuit that just changeing also comprises an enabling counting device; The data input pin of this enabling counting device is connected on just delivers another auxiliary open contact back of stream contactless switch, and the normally closed contact of enabling counting device is connected on the top of just delivering the stream contactless coil.
Described enabling counting device is provided with enabling counting device reset button, and this reset button is connected in parallel in the control loop of enabling counting device.
When stream Contactor Starting button was just being delivered in startup, the open contact of just delivering the stream contactless switch was closed, and the enabling counting device can align delivers the automatic counting of stream contactless switch 1 time; Just delivering the main electric shock adhesive of stream contactless switch, motor is just being changeed, when the enabling counting device reaches the number of times that sets; The normally closed contact of enabling counting device breaks off; The main contact that causes just delivering the stream contactless switch can't adhesive, and motor no longer just changes, and just can flow contactless switch to reciprocal cross and maintain this moment.
The beneficial effect of the utility model is: through in the control circuit of just delivering the stream contactless switch, adding an enabling counting device; Make it align deciliter number of times of main contact of delivering the stream contactless switch and count, and reach at the enabling counting device and AC contactor to be quit work when setting number of times.Not only can before AC contactor sticks together, maintain like this, prolong the service life of AC contactor, also can point out the maintenance personnel simultaneously, get rid of potential safety hazard, guarantee the smooth operation of hoisting crane other mechanism's inspection to it.
Description of drawings
Fig. 1 is the control principle figure of hoisting crane control circuit;
Fig. 2 is the hoisting crane main circuit diagram corresponding to Fig. 1.
The specific embodiment
Further specify below in conjunction with the specific embodiment of accompanying drawing the utility model.
Be applicable to the embodiment of the control circuit of hoisting crane
In conjunction with Fig. 1; This control circuit comprises the start button SB1 and the SB2 of AC380V power lead, rotating AC contactor, rotating ac contactor coil, a pair of auxiliary open contact of rotating AC contactor and normally closed contact, just delivers another auxiliary open contact, enabling counting device JSQ1, the normally closed contact of enabling counting device JSQ1 and the reset button of enabling counting device JSQ1 of stream contactless switch K10.Wherein just delivering normally closed contact and the coil of just delivering stream contactless switch K10 of auxiliary normally closed contact, the enabling counting device JSQ1 of auxiliary open contact, the counter-rotating AC contactor K20 of stream contactless switch K10 and connecting successively, and the auxiliary open contact of just delivering stream contactless switch K10 is parallel with and just delivers stream Contactor Starting button SB1.The auxiliary open contact of counter-rotating AC contactor K20, just deliver the auxiliary normally closed contact of stream contactless switch K10 and the coil of counter-rotating AC contactor K20 and connect successively, and the auxiliary open contact of counter-rotating AC contactor K20 is parallel with counter-rotating AC contactor start button SB2.The data input pin of enabling counting device JSQ1 is connected on just delivers another auxiliary open contact back of stream contactless switch K10, and the reset button SB3 of enabling counting device JSQ1 is connected in parallel in its control loop.
Its working process is following: according to field working conditions, deciliter number of times of just delivering the stream contactless switch is set on enabling counting device JSQ1, starts and just delivering stream Contactor Starting button SB1 once, enabling counting device JSQ1 can align and deliver the automatic counting of stream contactless switch K10 once; When enabling counting device JSQ1 reached deciliter number of times of setting, enabling counting device JSQ1 automatically locked, and the normally closed contact of enabling counting device JSQ1 breaks off, and just delivering stream contactless coil K10 can not self-locking, causes cisco unity malfunction.Repair and maintenance personnel can align and deliver stream contactless switch K10 and maintain with counter-rotating AC contactor K20 this moment.After maintenance finished, through the reset button SB3 of enabling counting device JSQ1, enabling counting device JSQ1 self-zeroing can align and deliver stream contactless switch K10 and count again.
The embodiment of a kind of bridge (door) formula hoisting crane
Bridge (door) formula hoisting crane comprises lifting mechanism and translation mechanism, wherein lifting mechanism comprise the circuit breaker that hoists, hoist rotating AC contactor, lifting motor, translation mechanism comprises translation circuit breaker, translation rotating AC contactor and translation motor.In conjunction with Fig. 1 and Fig. 2; In bridge (door) formula hoisting crane; Lifting mechanism with or the control circuit of the positive and negative AC contactor of translation mechanism can be following structure: normally closed contact and the coil of just delivering stream contactless switch K10 of just delivering auxiliary normally closed contact, the enabling counting device JSQ1 of auxiliary open contact, the counter-rotating AC contactor K20 of stream contactless switch K10 are connected successively, and the auxiliary open contact of just delivering stream contactless switch K10 is parallel with and just delivers stream Contactor Starting button SB1; The auxiliary open contact of counter-rotating AC contactor K20, just deliver the auxiliary normally closed contact of stream contactless switch K10 and the coil of counter-rotating AC contactor K20 and connect successively, and the auxiliary open contact of counter-rotating AC contactor K20 is parallel with counter-rotating AC contactor start button SB2; The data input pin of enabling counting device JSQ1 is connected on just delivers another auxiliary open contact back of stream contactless switch K10, and the reset button SB3 of enabling counting device JSQ1 is connected in parallel in the control loop of enabling counting device JSQ1.Just delivering three of stream contactless switch K10 often open main contact be connected on lifting motor with or three phase sequences of translation motor on; Three of counter-rotating AC contactor K20 often open main contact also be connected on after through the phase sequence of changing-over power supply lifting motor with or three phase sequences of translation motor motor M 10 on, so just realized lifting motor and or the rotating and reverse of translation motor.
The working process of this hoisting crane is following: according to field working conditions, to lifting mechanism with or the enabling counting device of translation mechanism on deciliter number of times that it is just delivering the stream contactless switch is set.Be that example is explained its working process below with the crane hoisting mechanism; The circuit breaker that hoists at first closes; Starting hoists just delivers stream Contactor Starting button SB1 once, and the enabling counting device JSQ1 that hoists can just deliver stream contactless switch K10 to hoisting and count once automatically, hoists and just delivers the coil electricity of stream contactless switch K10; Three of just delivering stream contactless switch K10 of hoisting often open the main contact adhesive, make lifting motor M10 take place just to change; When startup hoisted counter-rotating AC contactor start button SB2, the auxiliary normally closed contact of the counter-rotating AC contactor K20 that hoists broke off, and the enabling counting device JSQ1 that hoists just no longer counts, and this moment, lifting motor M10 can reverse; When the enabling counting device JSQ1 that hoists reached deciliter number of times of setting, the enabling counting device JSQ1 that hoists automatically locked, and the normally closed contact of the enabling counting device JSQ1 that hoists breaks off, hoist just deliver stream contactless coil K10 can not self-locking, cause cisco unity malfunction.Repair and maintenance personnel can just deliver stream contactless switch K10 to hoisting and maintained with counter-rotating AC contactor K20 this moment.After maintenance finished, through the enabling counting device reset button SB3 that hoists, this enabling counting device JSQ1 self-zeroing can just be delivered stream contactless switch K10 to hoisting and count again.The control process of hoisting crane translation mechanism also is like this.
Claims (4)
1. control circuit that is applicable to hoisting crane; Comprise and just change ac contactor control circuit, counter-rotating ac contactor control circuit; The auxiliary normally closed contact of just delivering the stream contactless switch is connected in the counter-rotating AC contactor; The auxiliary normally closed contact of counter-rotating AC contactor is connected on just to be delivered in the stream contactless switch; It is characterized in that: the described ac contactor control circuit that just changeing also comprises an enabling counting device, and the data input pin of this enabling counting device is connected on just delivers another auxiliary open contact back of stream contactless switch, and the normally closed contact of enabling counting device is connected on the top of just delivering the stream contactless coil.
2. control circuit according to claim 1 is characterized in that: described enabling counting device is provided with enabling counting device reset button, and described reset button is connected in parallel in the control loop of enabling counting device.
3. hoisting crane; Comprise translation motor, lifting motor and respectively with they pairing rotating ac contactor control circuits; The auxiliary normally closed contact of just delivering the stream contactless switch is connected in the counter-rotating AC contactor; The auxiliary normally closed contact of counter-rotating AC contactor is connected on just to be delivered in the stream contactless switch; It is characterized in that: described translation motor with or the pairing ac contactor control circuit that just changeing of lifting motor also comprise an enabling counting device, the data input pin of this enabling counting device is connected on just delivers another auxiliary open contact back of stream contactless switch, the normally closed contact of enabling counting device is connected on the top of just delivering the stream contactless coil.
4. a kind of hoisting crane according to claim 3 is characterized in that: described enabling counting device is provided with enabling counting device reset button, and described reset button is connected in parallel in the control loop of enabling counting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120373924 CN202272647U (en) | 2011-09-30 | 2011-09-30 | Control circuit and crane using control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120373924 CN202272647U (en) | 2011-09-30 | 2011-09-30 | Control circuit and crane using control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202272647U true CN202272647U (en) | 2012-06-13 |
Family
ID=46193020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120373924 Expired - Fee Related CN202272647U (en) | 2011-09-30 | 2011-09-30 | Control circuit and crane using control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202272647U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449311A (en) * | 2013-09-13 | 2013-12-18 | 河南江河重工集团有限公司 | Crane and control circuit thereof |
| CN103523673A (en) * | 2013-10-31 | 2014-01-22 | 长城汽车股份有限公司 | Overhead traveling crane main hook lifting control device and method |
-
2011
- 2011-09-30 CN CN 201120373924 patent/CN202272647U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449311A (en) * | 2013-09-13 | 2013-12-18 | 河南江河重工集团有限公司 | Crane and control circuit thereof |
| CN103449311B (en) * | 2013-09-13 | 2015-07-15 | 河南江河重工集团有限公司 | Crane and control circuit thereof |
| CN103523673A (en) * | 2013-10-31 | 2014-01-22 | 长城汽车股份有限公司 | Overhead traveling crane main hook lifting control device and method |
| CN103523673B (en) * | 2013-10-31 | 2016-03-02 | 长城汽车股份有限公司 | Overhead traveling crane main hook apparatus for controlling of lifting and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |