CN101645682A - Motor forward and backward rotation protection loop of limited switch - Google Patents
Motor forward and backward rotation protection loop of limited switch Download PDFInfo
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- CN101645682A CN101645682A CN200910168510A CN200910168510A CN101645682A CN 101645682 A CN101645682 A CN 101645682A CN 200910168510 A CN200910168510 A CN 200910168510A CN 200910168510 A CN200910168510 A CN 200910168510A CN 101645682 A CN101645682 A CN 101645682A
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- limit switch
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Abstract
The embodiment of the invention discloses a motor forward and backward rotation protection loop of a limited switch, comprising a motor forward rotation starting button, a motor backward rotation starting button, a stop dog, a forward stroke limit switch, a backward stroke limit switch, a motor forward rotation coil, a motor backward rotation coil, a forward direction additional stroke limit switch and a backward direction additional stroke limit switch, wherein, the switch contact of the forward direction additional stroke limit switch is connected in the loop of the motor backward rotation coil in series for cutting off the loop of the motor backward rotation coil; the forward direction additional stroke limit switch is set to be not later than that the forward direction stroke limit switch is triggered by the stop dog; the switch contact of the backward direction additional stroke limit switch is connected in the loop of the motor forward rotation coil in series for cutting off theloop of the motor forward rotation coil. The embodiment of the invention effectively avoids mechanical sticking or equipment loss caused by mechanical sticking by adding the scheme of additional limiting.
Description
Technical field
The present invention relates to the field, more particularly, relate to the motor positive and inverse protection loop of a kind of Cheng Kaiguan of limit.
Background technology
The motor positive and inverse control loop that the limit journey that we use is at present opened the Central Shanxi Plain comprises that motor is just changeing start button, motor counter-rotating start button, block, positive direction lead limit switch, opposite direction lead limit switch, the positive switch coil of motor and motor counter-rotating coil.After described starter motor was just changeing start button, positive switch coil running of described motor and driving device equipment were by the positive direction motion.Reach the desired location of positive direction when plant equipment after, described block triggers described positive direction lead limit switch.Disconnecting the positive switch coil of motor after described positive direction lead limit switch is triggered by described block powers.Thereby plant equipment stops to continue to move to positive direction.Equally, after starting described motor counter-rotating start button, motor counter-rotating coil running and driving device equipment are by motion in the other direction.After plant equipment reached reciprocal desired location, described block triggered lead limit switch in the other direction.Described opposite direction lead limit switch is subjected to described block to trigger back disconnection motor counter-rotating coil power supply.Thereby plant equipment stops to continue to motion in the other direction.
The direction of motion of above plant equipment is that power phase is essential correct by the prerequisite of direction initialization motion.When power phase connects inverse time, after starting described motor and just changeing start button, thereby the positive switch coil backward rotation of motor driving device equipment is to motion in the other direction.After arriving the opposite direction desired location, described opposite direction lead limit switch is subjected to described block to trigger back disconnection motor counter-rotating coil power supply.Owing to trigger the positive direction position that plant equipment can't reach setting, thereby described block can't trigger described positive direction lead limit switch.So described positive direction lead limit switch can't disconnect the positive switch coil power supply of motor.This moment, plant equipment continued under the driving of positive switch coil to motion in the other direction, thereby caused machinery stuck.Equally, when power phase connects inverse time, behind the described starter motor counter-rotating start button, owing to trigger the opposite direction position that plant equipment can't reach setting, thus described block can't trigger lead limit switch in the other direction.Described opposite direction lead limit switch can't disconnect motor counter-rotating coil power supply.This moment, plant equipment continued under the driving of counter-rotating coil to the positive direction motion, thereby also can cause machinery stuck.
Machinery is stuck not only can be caused damage to the production work of equipment or influence, and might cause equipment damage.
Summary of the invention
In view of this, the invention provides a kind of power phase and connect the protection loop that also can effectively avoid machinery stuck inverse time as limit Cheng Kaiguan.
For achieving the above object, the utility model provides following technical scheme:
A kind of motor positive and inverse protection loop of limitting Cheng Kaiguan comprises that motor is just changeing start button, motor counter-rotating start button, block, positive direction lead limit switch, opposite direction lead limit switch, the positive switch coil of motor, motor counter-rotating coil, forward additional travel limit switch and retroactive addition lead limit switch;
The switch contact of described forward additional travel limit switch is connected in the loop of described motor counter-rotating coil; Described forward additional travel limit switch is used to disconnect the loop of described motor counter-rotating coil;
Described forward additional travel limit switch is set to be not later than described positive direction lead limit switch and is triggered by described block;
The switch contact of described retroactive addition lead limit switch is connected in the loop of the positive switch coil of described motor; Described retroactive addition lead limit switch is used to disconnect the loop of the positive switch coil of described motor;
Described retroactive addition lead limit switch is set to be not later than described opposite direction lead limit switch and is triggered by described block.
When preferably, described forward additional travel limit switch and forward additional travel limit switch are the swing arm lead limit switch:
Described forward additional travel limit switch is located at the inboard of described positive direction lead limit switch, and described forward additional travel limit switch is set to only disconnect described motor counter-rotating coil when the block positive movement;
Described retroactive addition lead limit switch is located at the inboard of described opposite direction lead limit switch, and described retroactive addition lead limit switch is set to only disconnect the positive switch coil of described motor when the block counter motion.
Preferably, described forward additional travel limit switch and forward additional travel limit switch are the swing arm lead limit switch, comprise swing arm, axle, pin;
Described swing arm is provided with the circular hole that is used to hold described axle, and is being provided with the groove that is communicated with circular hole with the vertical direction of described round hole axial;
Described pin is arranged in the groove and is fixed on the described axle.
Preferably, when described forward additional travel limit switch and retroactive addition lead limit switch are the straight-bar type lead limit switch:
Described forward additional travel limit switch and forward additional travel limit switch are designed to be triggered by described block simultaneously;
Described retroactive addition lead limit switch and retroactive addition lead limit switch are designed to be triggered by described block simultaneously.
From above-mentioned technical scheme as can be seen, the embodiment of the invention is by having increased the scheme of forward additional travel limit switch and retroactive addition lead limit switch, and make positive direction additional travel switch can disconnect the counter-rotating coil additional design, the additional travel switch can disconnect positive switch coil in the other direction.Thereby make limit Cheng Kaiguan connect under the anti-situation also and can make the plant equipment stop motion so that the block on the stroke disconnects the coil circuit of respective action when arriving desired location in phase sequence.Thereby effectively avoided mechanical equipment loss stuck and that bring because of machinery is stuck.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of embodiment of the invention limit Cheng Kaiguan;
Fig. 2 is the structural representation of embodiment of the invention forward additional travel limit switch 31.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention discloses the motor positive and inverse protection loop of a kind of Cheng Kaiguan of limit, to realize also can effectively avoiding machinery stuck inverse time when power phase connects.
As shown in Figure 1, the motor positive and inverse of embodiment of the invention protection loop comprises that motor is just changeing start button, motor counter-rotating start button, block 5, positive direction lead limit switch 3, opposite direction lead limit switch 4, forward additional travel limit switch 31, retroactive addition lead limit switch 41, the positive switch coil of motor and motor counter-rotating coil; Described forward additional travel limit switch 31 is located at the inboard of described positive direction lead limit switch 3.Like this, the described block 5 that being used on plant equipment triggered travel switch is moving to positive direction, promptly when 3 motions of described positive direction lead limit switch, at first will through and trigger described forward additional travel limit switch 31 after could arrive described positive direction lead limit switch 3.The switch contact of described forward additional travel limit switch 31 is connected in the loop of described motor counter-rotating coil, and described forward additional travel limit switch 31 only is set to disconnect the described motor coil that reverses when described block 5 positive movements.
Described retroactive addition lead limit switch 41 is located at the inboard of described opposite direction lead limit switch 4, like this, the described block 5 that being used on plant equipment triggered travel switch is moving to opposite direction, promptly when described opposite direction lead limit switch 4 moves, at first to pass through and trigger described retroactive addition lead limit switch 41 to arrive described opposite direction lead limit switch 4.The switch contact of described retroactive addition lead limit switch 41 is connected in the loop of the positive switch coil of described motor, and described retroactive addition lead limit switch 41 only is set to disconnect the positive switch coil of described motor when described block 5 counter motions.
As shown in Figure 2, the described forward additional travel limit switch 31 in the embodiment of the invention can be the swing arm lead limit switch.Its structure comprises swing arm 33, axle 34, pin 35.Described swing arm 33 is provided with the circular hole 36 that is used to hold described axle 34, and is provided with the groove 37 that is communicated with circular hole in the direction with described circular hole 36 axis normal; Described pin is arranged in the described groove 37 and is fixed on the described axle 34.Like this, when described swing arm 33 is stirred by the described block 5 that moves along positive direction and when rotating counterclockwise around described axle 34, described pin 35 will make described axle 34 rotate counterclockwise under the impetus on the right edge edge of described groove 37, and then the rotation of described axle 34 will trigger the switch contact in the described motor counter-rotating coil that described forward additional travel limit switch 31 connected.Make described motor counter-rotating coil circuit disconnect.
When the motion in the other direction of described block 5, described swing arm 33 is stirred along the described block 5 that moves in the other direction and when clockwise rotating around described axle 34, because the left side of described groove 37 is not used in the edge that promotes described pin 35, described pin 35 will can not be pushed, thereby described axle 34 is rotated, so can not trigger the switch contact in the described motor counter-rotating coil that described forward additional travel limit switch 31 connected, be used for disconnecting described motor counter-rotating coil.
The structure of described retroactive addition lead limit switch 41 and described forward additional travel limit switch 31 are similar.It can be opposite with described forward additional travel limit switch 31 by the direction that described block 5 triggers, promptly have only when active force being arranged when described block 5 motion in the other direction and to described retroactive addition lead limit switch 41, can make described retroactive addition lead limit switch 41 trigger the switch contact of the positive switch coil of described forward motor, be used for disconnecting the positive switch coil of described motor.
Thereby, the additional travel limit switch structure of the embodiment of the invention makes that described block 5 only could the trigger switch contact when specific direction moves, and the wire loop that described forward additional travel limit switch 31 or retroactive addition lead limit switch 41 are connected disconnects.
In embodiments of the present invention, when power phase is correct, need to press described motor and just changeing start button under the just commentaries on classics situation, the positive switch coil of then described motor gets electric, and motor just changes.The described block 5 of plant equipment promptly moves to described positive direction lead limit switch 3 to positive direction, when to during near extreme position described block 5 at first trigger described forward additional travel limit switch 31, but because described forward additional travel limit switch 31 switch contacts are connected in the loop of described motor counter-rotating coil, the positive switch coil of described motor breaks not open, motor will remain in operation, when reaching the limit of the position, triggers described block 5 described positive direction lead limit switch 3, because being strings, positive direction lead limit switch 3 switch contacts just going back in the road, thereby make the positive switch coil outage of described motor, the described block 5 of plant equipment stops to the positive direction motion.Press described motor counter-rotating start button then, described motor counter-rotating coil gets the motor counter-rotating, the described block 5 of plant equipment moves to opposite direction from the extreme position of positive direction, what at this moment described block 5 was at first run into is forward additional travel limit switch 31, but because effective triggering of described forward additional travel limit switch 31 can only trigger when positive direction move and disconnect onset at described block 5, so 31 this moments of described forward additional travel limit switch and fail to disconnect the described motor coil that reverses.The described block 5 of plant equipment will continue to motion in the other direction this moment, when described block 5 at first triggers described retroactive addition lead limit switch 41, but because described retroactive addition lead limit switch 41 is connected in the positive switch coil of described motor, described motor counter-rotating coil breaks not open, motor will remain in operation, when described block 5 reaches capacity the position, trigger described opposite direction lead limit switch 4, make described motor counter-rotating coil blackout.Thereby make the described block 5 of plant equipment stop to motion in the other direction.
When power phase connects inverse time, to press described motor and just changeing start button, the positive switch coil of described motor gets electric, the motor direction of rotation also will change because power phase connects inverse time, and motor will just not be then be counter-rotating.At this moment plant equipment will be to motion in the other direction, described block 5 at first triggers described retroactive addition lead limit switch 41, because the switch contact of described retroactive addition lead limit switch 41 is to be connected in the positive switch coil of described motor, thereby make the positive switch coil outage of described motor, described block 5 motion in the other direction of tool equipment stops.Can not form that to form machinery because making the outage of the positive switch coil of described motor stuck, thereby play the effect of protection plant equipment.Press described motor counter-rotating start button then, because phase sequence connects instead, so described motor counter-rotating coil gets motor will be counter-rotating but just change, at this moment the described block 5 of plant equipment moves to positive direction, what at this moment described block 5 at first triggered is described forward additional travel limit switch 31, because described forward additional travel limit switch 31 switch contacts are to be connected in the described motor counter-rotating coil, thereby make described motor counter-rotating coil blackout, the described block 5 positive directions motion of plant equipment stops.Can not make rotating protection loop malfunctioning so how embodiment of the invention power phase changes, it is stuck to have avoided forming machinery, thereby has played protective effect.
In another embodiment, the forward additional travel limit switch of the embodiment of the invention and retroactive addition lead limit switch can also be straight-bar type limit Cheng Kaiguan.
The switch contact of the forward additional travel limit switch of the embodiment of the invention is connected in the loop of motor counter-rotating coil, and the switch contact of retroactive addition lead limit switch is connected in the loop of the positive switch coil of motor.
The described forward additional travel limit switch of the embodiment of the invention is arranged side by side with described forward stroke limit switch is in the same place, and described retroactive addition lead limit switch is arranged side by side with described reverse stroke limit switch is in the same place.When power phase connects anti-the time, when pressing the forward start button, block can be because the forward direction of motor rotation moves in the opposite direction for counter-rotating, can trigger described retroactive addition lead limit switch and described reverse stroke limit switch simultaneously when arriving reciprocal extreme position.Because described retroactive addition lead limit switch is used for disconnecting positive switch coil loop, thus positive switch coil loop can cut off the power supply this moment, thereby make described block stop to continue to the trend of motion in the other direction, and then avoided mechanical stuck.In like manner, when pressing reverse start button, described block can trigger described forward additional travel limit switch and described forward stroke limit switch when arriving the direct limit position simultaneously.Because described forward additional travel limit switch is used for disconnecting the counter-rotating wire loop, thus counter-rotating can cut off the power supply wire loop at this moment, thereby make described block stop to continue trend to the positive direction motion, and then avoided mechanical stuck.
In sum, the embodiment of the invention is by being provided with forward additional travel limit switch and retroactive addition lead limit switch, and making described forward additional travel limit switch when the block of plant equipment moves to desired location, disconnect the scheme of counter-rotating coil, described retroactive addition lead limit switch disconnects positive switch coil when the block of plant equipment moves to desired location.Make to connect and also can not cause plant equipment stuck in anti-, and then also just avoided because the damage of the stuck plant equipment that causes of plant equipment because of the coil circuit that can't disconnect the work of switching at power phase.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1, a kind of motor positive and inverse protection loop of limitting Cheng Kaiguan, it is characterized in that, comprising: motor is just changeing start button, motor counter-rotating start button, block, positive direction lead limit switch, opposite direction lead limit switch, the positive switch coil of motor, motor counter-rotating coil, forward additional travel limit switch and retroactive addition lead limit switch;
The switch contact of described forward additional travel limit switch is connected in the loop of described motor counter-rotating coil; Described forward additional travel limit switch is used to disconnect the loop of described motor counter-rotating coil;
Described forward additional travel limit switch is set to be not later than described positive direction lead limit switch and is triggered by described block;
The switch contact of described retroactive addition lead limit switch is connected in the loop of the positive switch coil of described motor; Described retroactive addition lead limit switch is used to disconnect the loop of the positive switch coil of described motor;
Described retroactive addition lead limit switch is set to be not later than described opposite direction lead limit switch and is triggered by described block.
2, according to the described protection of claim 1 loop, it is characterized in that, when described forward additional travel limit switch and forward additional travel limit switch are the swing arm lead limit switch:
Described forward additional travel limit switch is located at the inboard of described positive direction lead limit switch, and described forward additional travel limit switch is set to only disconnect described motor counter-rotating coil when the block positive movement;
Described retroactive addition lead limit switch is located at the inboard of described opposite direction lead limit switch, and described retroactive addition lead limit switch is set to only disconnect the positive switch coil of described motor when the block counter motion.
According to the described protection of claim 2 loop, it is characterized in that 3, described forward additional travel limit switch and forward additional travel limit switch are the swing arm lead limit switch, comprise swing arm, axle, pin;
Described swing arm is provided with the circular hole that is used to hold described axle, and is being provided with the groove that is communicated with circular hole with the vertical direction of described round hole axial;
Described pin is arranged in the groove and is fixed on the described axle.
4, according to the described protection of claim 1 loop, it is characterized in that, when described forward additional travel limit switch and retroactive addition lead limit switch are the straight-bar type lead limit switch:
Described forward additional travel limit switch and forward additional travel limit switch are designed to be triggered by described block simultaneously;
Described retroactive addition lead limit switch and retroactive addition lead limit switch are designed to be triggered by described block simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101685109A CN101645682B (en) | 2009-08-21 | 2009-08-21 | Motor forward and backward rotation protection loop of limited switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101685109A CN101645682B (en) | 2009-08-21 | 2009-08-21 | Motor forward and backward rotation protection loop of limited switch |
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| Publication Number | Publication Date |
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| CN101645682A true CN101645682A (en) | 2010-02-10 |
| CN101645682B CN101645682B (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101685109A Active CN101645682B (en) | 2009-08-21 | 2009-08-21 | Motor forward and backward rotation protection loop of limited switch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687768A (en) * | 2018-12-29 | 2019-04-26 | 深圳市越疆科技有限公司 | A kind of detection method, device and the controller of firing pin type band-type brake |
| CN110474579A (en) * | 2018-05-11 | 2019-11-19 | 青岛海尔滚筒洗衣机有限公司 | A kind of control device of stepper motor rotation |
| CN110772978A (en) * | 2019-09-17 | 2020-02-11 | 天津市华邦科技发展有限公司 | Electrical control system for catalytic oxidation of high-concentration organic gas tail gas |
| CN116613925A (en) * | 2023-06-03 | 2023-08-18 | 深圳市格尔机电科技有限公司 | Stroke limit control method for electric push rod |
-
2009
- 2009-08-21 CN CN2009101685109A patent/CN101645682B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474579A (en) * | 2018-05-11 | 2019-11-19 | 青岛海尔滚筒洗衣机有限公司 | A kind of control device of stepper motor rotation |
| CN109687768A (en) * | 2018-12-29 | 2019-04-26 | 深圳市越疆科技有限公司 | A kind of detection method, device and the controller of firing pin type band-type brake |
| CN110772978A (en) * | 2019-09-17 | 2020-02-11 | 天津市华邦科技发展有限公司 | Electrical control system for catalytic oxidation of high-concentration organic gas tail gas |
| CN116613925A (en) * | 2023-06-03 | 2023-08-18 | 深圳市格尔机电科技有限公司 | Stroke limit control method for electric push rod |
| CN116613925B (en) * | 2023-06-03 | 2024-05-17 | 深圳市格尔机电科技有限公司 | Stroke limit control method for electric push rod |
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| Publication number | Publication date |
|---|---|
| CN101645682B (en) | 2012-08-08 |
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