CN203486832U - Intelligent limit switch - Google Patents
Intelligent limit switch Download PDFInfo
- Publication number
- CN203486832U CN203486832U CN201320557938.4U CN201320557938U CN203486832U CN 203486832 U CN203486832 U CN 203486832U CN 201320557938 U CN201320557938 U CN 201320557938U CN 203486832 U CN203486832 U CN 203486832U
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- CN
- China
- Prior art keywords
- relay
- switch
- limit switch
- phase
- contactor
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Abstract
The utility model discloses an intelligent limit switch. The limit switch comprises a relay, a contactor, a phase broken and phase sequence protection relay, wherein the contactor is connected between an input end of a motor and a control box, the phase broken and phase sequence protection relay is connected between the contactor and the control box, an output contact of the phase broken and phase sequence protection relay is connected with a coil of the relay in serials, a coil of the contactor is connected with a lower limit switch and an upper limit switch in serials, a normally open contact of the relay is connected with the lower limit switch in parallel, and a normally closed contact of the relay is connected with the upper limit switch in parallel. The contact is added to a power line supplied to an electrical block and a control circuit is connected with the limit switch in serials so as to achieve function of limit protection; the phase sequence relay is additionally arranged for detecting phase sequence of a power supply so as to judge the moving direction of the electrical block; the normally open contact and the normally closed contact of the relay are used for controlling the contactor selectively from upper limit and lower limit, the upper limit function is effective during rising and the lower limit function is effective during descending, so that limit control on the electric block is realized; moreover, an electrical rail is unnecessary, power distribution material is saved, and production cost is reduced.
Description
Technical field
The utility model has related to a kind of intelligent limit switch, belongs to electric block technical field.
Background technology
When electric block is used in conveyor line occasion; in order to control convenient and saving material; control part need to be unified to be arranged in total electronic box; and the high-low limit switch of every electric block all needs to take back total electronic box; to realize the function of limit protection; but need to increase a lot of electric rails, the controlling cost of increase.And some production company is for workout cost, high-low limit switch is not set on electric block, only with observation and the experience of operating personal, open control, but there is serious potential safety hazard in this product, operating personal is slightly neglected just can cause safety misadventure.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of intelligent limit switch, not only can realize the spacing control to electric block, and save distribution material, has reduced productive costs.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is:
An intelligent limit switch, comprises relay, contactless switch, disconnected phase and phase order protective relay, and described contactless switch is connected between the input end and control box of motor, and described disconnected phase and phase order protective relay is connected between contactless switch and control box; Its output contact that interrupts phase and phase order protective relay is connected with the coil of described relay, and the coil of described contactless switch and lower position switch, upper limit position switch are in series; The open contact of described relay is in parallel with described lower position switch, and normally closed contact is in parallel with described upper limit position switch.
Aforesaid a kind of intelligent limit switch, is characterized in that: also comprise voltage transformer, described voltage transformer is connected between contactless switch and control box.
The beneficial effects of the utility model are: at the power lead of supplying with electric block, increase contactless switch; control path serial connection limit switch; to realize the function of limit protection; set up phase sequence relay; detecting power phase is with the service direction of judgement electric block; and be upper limit or lower limit control contactor in conjunction with relay selection; while making to rise, upper limit function is effective; during decline, lower limiting function is effective; thereby realize the spacing control to electric block; and without increasing electric rail, saved distribution material, reduced productive costs.
Accompanying drawing explanation
Fig. 1 is the major loop figure of a kind of intelligent limit switch of the utility model;
Fig. 2 is the control drawing of a kind of intelligent limit switch of the utility model.
The specific embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As depicted in figs. 1 and 2, a kind of intelligent limit switch, it is characterized in that: comprise relay K 1, contactless switch KM1, disconnected phase and phase order protective relay, described contactless switch KM1 is connected between the input end and control box of motor, and described disconnected phase and phase order protective relay is connected between contactless switch KM1 and control box; Its output contact that interrupts phase and phase order protective relay is connected with the coil of described relay K 1, and the coil of described contactless switch KM1 and lower position switch SQD, upper limit position switch SQU are in series; The open contact of described relay K 1 is in parallel with described lower position switch SQD, and normally closed contact is in parallel with described upper limit position switch SQU.
While not touching bound bit switch in equipment running process, bound bit switch is all in closure state, and the coil of contactless switch KM1 obtains electric, makes its switch in closure state, motor energising, and equipment normally moves.In equipment running process, by the rotation direction of disconnected phase and phase order protective relay judgement motor, when motor forward rotation, while being equipment upward movement, the contact point of disconnected phase and phase order protective relay is closed, it is electric that thereby the coil of relay K 1 obtains, make its open contact closed, normally closed contact is opened, thereby lower position switch SQD is by short circuit, selected the achieve a butt joint control of tentaculum KM1 of upper limit position switch SQU, when equipment goes upward to ultimate limit state, upper limit position switch SQU disconnects, thereby the coil blackout of contactless switch KM1, its switch disconnects, be that motor is in off-position, realized the upper limit of equipment has been controlled.When disconnected phase and phase order protective relay detects motor reversion; its contact point disconnects; thereby the coil blackout of relay K 1; thereby make upper limit position switch SQU short circuit; by lower position switch SQD control contactor KM1; its control principle is consistent with upper limit position switch SQU control principle, does not repeat them here.Thereby realized the upper and lower spacing control of equipment.
Wherein, also comprise voltage transformer, described voltage transformer is connected between contactless switch and control box, for relay, contactless switch and disconnected phase and phase order protective relay provide corresponding low voltage.
In sum, a kind of intelligent limit switch provided by the invention, not only can realize the spacing control to electric block, and save distribution material, has reduced productive costs.
More than show and described groundwork of the present utility model, principal character and advantage.The technical personnel of the industry should be understood; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is by appending claims and equivalent circle thereof.
Claims (2)
1. an intelligent limit switch, it is characterized in that: comprise relay, contactless switch, disconnected phase and phase order protective relay, described contactless switch is connected between the input end and control box of motor, and described disconnected phase and phase order protective relay is connected between contactless switch and control box; Its output contact that interrupts phase and phase order protective relay is connected with the coil of described relay, and the coil of described contactless switch and lower position switch, upper limit position switch are in series; The open contact of described relay is in parallel with described lower position switch, and normally closed contact is in parallel with described upper limit position switch.
2. a kind of intelligent limit switch according to claim 1, is characterized in that: also comprise voltage transformer, described voltage transformer is connected between contactless switch and control box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320557938.4U CN203486832U (en) | 2013-09-10 | 2013-09-10 | Intelligent limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320557938.4U CN203486832U (en) | 2013-09-10 | 2013-09-10 | Intelligent limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203486832U true CN203486832U (en) | 2014-03-19 |
Family
ID=50257677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320557938.4U Expired - Lifetime CN203486832U (en) | 2013-09-10 | 2013-09-10 | Intelligent limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203486832U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088261A (en) * | 2017-12-26 | 2018-05-29 | 德昌电机（南京）有限公司 | Electrical kiln self- lift |
| CN112875517A (en) * | 2021-01-18 | 2021-06-01 | 牧德科技（北京）有限公司 | Crane direct control belt limiting control module and crane |
-
2013
- 2013-09-10 CN CN201320557938.4U patent/CN203486832U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088261A (en) * | 2017-12-26 | 2018-05-29 | 德昌电机（南京）有限公司 | Electrical kiln self- lift |
| CN108088261B (en) * | 2017-12-26 | 2023-08-29 | 德昌电机（南京）有限公司 | Automatic elevator for electric kiln |
| CN112875517A (en) * | 2021-01-18 | 2021-06-01 | 牧德科技（北京）有限公司 | Crane direct control belt limiting control module and crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140319 |
|
| CX01 | Expiry of patent term |