CN202121300U - Overload protection device of electric winch - Google Patents
Overload protection device of electric winch Download PDFInfo
- Publication number
- CN202121300U CN202121300U CN2011201633234U CN201120163323U CN202121300U CN 202121300 U CN202121300 U CN 202121300U CN 2011201633234 U CN2011201633234 U CN 2011201633234U CN 201120163323 U CN201120163323 U CN 201120163323U CN 202121300 U CN202121300 U CN 202121300U
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Abstract
The utility model discloses an overload protection device of an electric winch, which can alarm, is safe, reliable and long in service life, consumes little time in usage recovery after overload, and provides protection for the electric winch. The overload protection device comprises a signal acquisition module, a signal processing module and an execution module, wherein the signal acquisition module comprises a shunt resistor, wherein one end of the shunt resistor is electrically connected with an input end of a motor of the electric winch and an input end of the signal processing module, the other end of the shunt resistor is grounded, the execution module comprises a sound alarming unit and a contactor control unit, the contactor control unit is used for controlling powering on and powering off of a contactor serially connected with a motor input circuit, and an output end of the signal processing module is respectively electrically connected with an input end of the voice alarming unit and an input end of the contactor control unit.
Description
Technical field
The utility model relates to the electric capstan technical field, specifically is a kind of overload protection arrangement of electric capstan.
Background technology
The overload protection arrangement of present electric capstan is when electric capstan transships, and motor generally can be rotated further, and power can not in time break off; And break off the back and could recover use, reduced the reliability of overload protection arrangement and the useful life of overload protection arrangement, and be unfavorable for protection electric capstan because overload protection arrangement itself needs requirement such as heat radiation can expend long time; Because overload the time does not have real-time reminding user's device, to transship often after a period of time, the user just knows transships and handles; Like this; Steel wire rope danger such as break easily, hurt sb.'s feelings, motor also burns out easily, is unfavorable for the protection to electric capstan.
The utility model content
The technical problem that the utility model will solve is, provides a kind of and both can report to the police, and security reliability is not only good, useful life but also length, recovers after the overload to use institute's elapsed time short again, and helps the overload protection arrangement to the electric capstan of the protection of electric capstan.
The technical scheme of the utility model is; The overload protection arrangement of the utility model electric capstan; It comprises signal acquisition module, signal processing module and Executive Module; Said signal acquisition module comprises shunt resistance, and an end of shunt resistance is electrically connected the other end ground connection of shunt resistance with the input of the motor of electric capstan and the input of signal processing module respectively; Executive Module comprises sound caution unit and contactor control unit; The contactor control unit is used to control the break-make that is serially connected in the contactor on the motor input circuit, and the output of said signal processing module is electrically connected with the input of sound caution unit and the input of contactor control unit respectively.
After adopting said structure, the utility model compared with prior art has the following advantages: the utility model is sampled through shunt resistance and is judged the operating condition of motor; During when motor overload or near overload, signal processing module can be dealt with rapidly and command execution module is carried out corresponding actions, i.e. sound caution unit carries out audible alarm real-time reminding user; Contactor control unit control contactor breaks off the motor outage is stopped, thereby accomplishes the overload protection to electric capstan, when the overload phenomenon is eliminated; Electric capstan can be reused again at once, and overload protection arrangement resets only needs 5 seconds, need not basically to wait for just can recover to use; This shows that the utility model can make the quick stall of motor, when having overcome prior art electric capstan overload; Motor can be rotated further, and power can not in time break off, and causes that steel wire rope breaks or other fault; Cause the defective of hidden danger, and have the advantage that shunt resistance sampling is sensitive, precision is high, and have sound caution unit can real-time reminding; Can report to the police so both the utlity model has; Security reliability is not only good, useful life but also length, recovers after the overload to use institute's elapsed time short again, and helps the advantage to the protection of electric capstan.
As improvement, said signal processing module comprises signal amplification unit, control unit and power supply unit of voltage regulation, and power supply unit of voltage regulation is electrically connected with signal amplification unit, control unit respectively, and the output of signal amplification unit is electrically connected with the input of control unit; One end of said shunt resistance is electrically connected an end that is meant shunt resistance and is electrically connected with the input of signal amplification unit with the input of signal processing module; The output of said signal processing module is electrically connected with the input of the input of sound caution unit and contactor control unit respectively that the output that is meant control unit is warned the input of unit with sound respectively and the input of contactor control unit is electrically connected; Owing to possess power supply unit of voltage regulation; Like this; More help under the situation of the subsidiary storage battery power supply of the vehicles such as automobile, ship itself, using, make the reliability of the utility model can not receive the battery voltage influence of fluctuations.
Description of drawings
Accompanying drawing is the circuit theory diagrams of the overload protection arrangement of the utility model electric capstan.
Shown in the figure, 1, signal acquisition module, 2.1, signal amplification unit, 2.2, control unit, 2.3, power supply unit of voltage regulation, 3.1, sound caution unit, 3.2, the contactor control unit.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The overload protection arrangement of the utility model electric capstan; It comprises signal acquisition module 1, signal processing module and Executive Module; Said signal acquisition module 1 comprises shunt resistance RR; The end of shunt resistance RR is electrically connected the other end ground connection of shunt resistance RR with the input of the motor of electric capstan and the input of signal processing module respectively; Executive Module comprises sound caution unit 3.1 and contactor control unit 3.2; Contactor control unit 3.2 is used to control the break-make that is serially connected in the contactor on the motor input circuit; Control the start and stop of motor through the break-make of contactor, the output of said signal processing module is electrically connected with the input of sound caution unit 3.1 and the input of contactor control unit 3.2 respectively.
Said signal processing module comprises signal amplification unit 2.1, control unit 2.2 and power supply unit of voltage regulation 2.3; Power supply unit of voltage regulation 2.3 is electrically connected with signal amplification unit 2.1, control unit 2.2 respectively, and the output of signal amplification unit 2.1 is electrically connected with the input of control unit 2.2; The end of said shunt resistance RR is electrically connected an end that is meant shunt resistance RR and is electrically connected with the input of signal amplification unit 2.1 with the input of signal processing module; The output of said signal processing module is electrically connected with the input of the input of sound caution unit 3.1 and contactor control unit 3.2 respectively that the output that is meant control unit 2.2 is warned the input of unit 3.1 with sound respectively and the input of contactor control unit 3.2 is electrically connected.
In this example; Said signal acquisition module 1 also comprises resistance R 1 and capacitor C 1; One end of resistance R 1 is electrically connected with the end of said shunt resistance RR; One end of the other end of resistance R 1 and capacitor C 1 is electrically connected with No. 3 pins of signal amplification unit 2.1 amplifier IC2A, the other end ground connection of capacitor C 1, and the purpose that is provided with like this is the sampling better reliability that makes signal acquisition module 1.
Said signal amplification unit 2.1, control unit 2.2 and power supply unit of voltage regulation 2.3 are prior art, and control unit 2.2 is a single-chip microcomputer, does not add and gives unnecessary details.
Said sound caution unit 3.1 all adopts the form of triode control relay to realize output with contactor control unit 3.2; Triode is by said Single-chip Controlling; The break-make of the relay control buzzer in the sound caution unit 3.1 realizes voice output, and the break-make of the relay control contactor of contactor control unit 3.2 is controlled the start and stop of motor.
Claims (2)
1. the overload protection arrangement of an electric capstan; It comprises signal acquisition module, signal processing module and Executive Module; It is characterized in that; Said signal acquisition module comprises shunt resistance, and an end of shunt resistance is electrically connected the other end ground connection of shunt resistance with the input of the motor of electric capstan and the input of signal processing module respectively; Executive Module comprises sound caution unit and contactor control unit; The contactor control unit is used to control the break-make that is serially connected in the contactor on the motor input circuit, and the output of said signal processing module is electrically connected with the input of sound caution unit and the input of contactor control unit respectively.
2. the overload protection arrangement of a kind of electric capstan according to claim 1; It is characterized in that; Said signal processing module comprises signal amplification unit, control unit and power supply unit of voltage regulation; Power supply unit of voltage regulation is electrically connected with signal amplification unit, control unit respectively, and the output of signal amplification unit is electrically connected with the input of control unit; One end of said shunt resistance is electrically connected an end that is meant shunt resistance and is electrically connected with the input of signal amplification unit with the input of signal processing module; The output of said signal processing module is electrically connected with the input of the input of sound caution unit and contactor control unit respectively that the output that is meant control unit is warned the input of unit with sound respectively and the input of contactor control unit is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201633234U CN202121300U (en) | 2011-05-20 | 2011-05-20 | Overload protection device of electric winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201633234U CN202121300U (en) | 2011-05-20 | 2011-05-20 | Overload protection device of electric winch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202121300U true CN202121300U (en) | 2012-01-18 |
Family
ID=45462337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201633234U Expired - Fee Related CN202121300U (en) | 2011-05-20 | 2011-05-20 | Overload protection device of electric winch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202121300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185282A (en) * | 2011-05-20 | 2011-09-14 | 宁波赤马绞盘有限公司 | Overload protection device for electric capstan |
-
2011
- 2011-05-20 CN CN2011201633234U patent/CN202121300U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185282A (en) * | 2011-05-20 | 2011-09-14 | 宁波赤马绞盘有限公司 | Overload protection device for electric capstan |
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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: 20120118 Termination date: 20200520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |