CN209282130U - Monitor the safety relay of mechanical switch - Google Patents
Monitor the safety relay of mechanical switch Download PDFInfo
- Publication number
- CN209282130U CN209282130U CN201920141871.3U CN201920141871U CN209282130U CN 209282130 U CN209282130 U CN 209282130U CN 201920141871 U CN201920141871 U CN 201920141871U CN 209282130 U CN209282130 U CN 209282130U
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- relay
- safety
- forced guiding
- mechanical switch
- circuit
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Abstract
The utility model relates to relay technical fields, disclose a kind of safety relay for monitoring mechanical switch, including power circuit, stopping signal input module, enabling signal input module, Safety output contact and forced guiding relay module, the stopping signal input module is for constantly receiving external idle trigger signal, and it reacts in time to stopping signal, the Safety output contact is made of the contact series of two groups of forced guiding relays, the Safety output contact is connect with the forced guiding relay module, for controlling external loading power loop.The safety relay structure of the technical solution of the utility model is simple, it is easy to operate, it can realize that the monitoring to safety device (mechanical switch) reduces manufacturing cost while the class of safety protection for meeting equipment without complicated Connection Mode.
Description
Technical field
The utility model relates to relay technical field, in particular to a kind of safety relay for monitoring mechanical switch.
Background technique
For monitoring the safety relay of the lower safety device of class of safety protection requirement (mechanical switch), into
Before the design of row equipment safety circuit, entry evaluation is carried out to the danger classes of equipment first, since its danger classes is lower, if
Safety return circuit design is carried out with the higher safety relay of security level, although the class of safety protection of equipment reaches requirement,
But it needs to put into very big manufacturing cost.In order to meet the requirements the class of safety protection in the lower equipment of danger classes,
And manufacturing cost can be reduced, therefore, design the safety relay of single channel input.
Utility model content
The main purpose of the utility model is to propose a kind of safety relay for monitoring mechanical switch, it is intended to be solved existing
The high technical problem of the safety relay manufacturing cost of (mechanical switch).
To achieve the above object, the utility model proposes monitoring mechanical switch safety relay, including power circuit,
Stopping signal input module, enabling signal input module, Safety output contact and forced guiding relay module, the shutdown
Signal input module in time reacts to stopping signal for constantly receiving external idle trigger signal, and the safety is defeated
Contact is made of the contact series of two groups of forced guiding relays out, the Safety output contact and the forced guiding relay
Module connection, for controlling external loading power loop.
Further, the power circuit include power input port, overcurrent protection circuit, filter rectifier and
Power detection system, the power input port is for receiving 24VDC power supply；The overcurrent protection circuit, for protecting electricity
Road；The filter rectifier, for being modulated to external input power；The power detection system, for detecting outside
Whether power supply normally provides power supply for safety relay.
Further, the forced guiding relay module includes forced guiding relay and latching circuit, the pressure
Guiding relay is for providing contact switch, after the lock circuit receives enabling signal for forced guiding relay, maintains
Forced guiding relay is in running order always.
Further, the enabling signal input module includes electrical-optical-electrical converting system, for isolation input and defeated
Electric signal out.
It further, further include interlock circuit system, the interlock circuit system and the forced guiding relay module
Connection, for the mutual detection between signal input channel.
Using the technical solution of the utility model, have the advantages that the technical solution of the utility model, by
Signal input part is inputted using single channel, and output end uses the mentality of designing of redundancy.Due to the assessment of risks grade of mechanical equipment
It is relatively low, therefore protective device only needs a mechanical switch acquisition signal, therefore safety relay only need to be to a machine
Tool switch is monitored.When mechanical switch breaks down, fault-signal can be detected and be shown by safety relay, be prevented
Safety return circuit is activated again.Safety relay itself breaks down and causes equipment can not safe shutdown phenomenon in order to prevent
Occur, we use the mentality of designing of forced guiding relay module redundancy in circuit, in signal output end by two groups of pressures
It is oriented to the normally opened contact series connection of relay, ensures that safe shutdown reduces system while the class of safety protection for meeting equipment
Cause this.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is that a kind of integral frame structure of the safety relay of monitoring mechanical switch of an embodiment of the present invention is shown
It is intended to；
Fig. 2 is a kind of circuit diagram of the safety relay of monitoring mechanical switch of an embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
The utility model proposes a kind of safety relays for monitoring mechanical switch.
As depicted in figs. 1 and 2, in an embodiment of the utility model, the safety relay of the monitoring mechanical switch includes
Power circuit 10, stopping signal input module, enabling signal input module 20, Safety output contact 60 and forced guiding relay
Device module 40, the stopping signal input module make stopping signal for constantly receiving external idle trigger signal, and in time
It reacts out, the Safety output contact 60 is made of the contact series of two groups of forced guiding relays, the Safety output contact
60 connect with the forced guiding relay module 40, for controlling external loading power loop.
Specifically, the power circuit 10 include power input port, overcurrent protection circuit, filter rectifier and
Power detection system, the power input port is for receiving 24VDC power supply；The overcurrent protection circuit, for protecting electricity
Road；The filter rectifier, for being modulated to external input power；The power detection system, for detecting outside
Whether power supply normally provides power supply for safety relay.
Specifically, the forced guiding relay module 40 includes forced guiding relay and latching circuit, the pressure
Guiding relay is for providing contact switch, after the lock circuit receives enabling signal for forced guiding relay, maintains
Forced guiding relay is in running order always.
Specifically, the enabling signal input module 20 includes electrical-optical-electrical converting system, for isolation input and defeated
Electric signal out.
It specifically, further include interlock circuit system, the interlock circuit system and the forced guiding relay module 40
Connection, for the mutual detection between signal input channel.
Specifically, the working principle of the safety relay are as follows: power on circuit, starting safety relay (can manually or
Automatic starting), start two groups of forced guiding relay module in safety relay, self-locking circuit is connected, and forced guiding is made
Relay module circuit continually and steadily works；Interlock circuit in starting-up later time also disconnects, and prevents from continuing starting and damaging starting
Circuit.The Safety output contact closure of output end, safety return circuit start work.Stop when safety relay signal input part receives
After machine signal, control system powers off forced guiding relay module, and Safety output contact disconnects, and equipment realizes safe shutdown.
During use, since state of the safety relay to mechanical switch carries out real-time monitoring, so working as safety device
Mechanical switch break down when, fault-signal can be recorded and be fed back by safety relay, prevent mechanical switch be in therefore
This starting device again when barrier state.
The safety relay is suitable for the lower safety return circuit design of danger classes, and safety relay construction is simple, behaviour
Facilitate, can realize the monitoring to safety device (mechanical switch) without complicated Connection Mode, meet equipment
Class of safety protection while, reduce manufacturing cost.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Under all utility models in the utility model are conceived, equivalent structure made based on the specification and figures of the utility model
Transformation, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (5)
1. it is a kind of monitor mechanical switch safety relay, which is characterized in that including power circuit, stopping signal input module,
Enabling signal input module, Safety output contact and forced guiding relay module, the stopping signal input module are used for
External idle trigger signal is constantly received, and is reacted in time to stopping signal, the Safety output contact is by two groups of pressures
It is oriented to the contact series composition of relay, the Safety output contact is connect with the forced guiding relay module, for controlling
External loading power loop processed.
2. the safety relay of monitoring mechanical switch according to claim 1, which is characterized in that the power circuit includes
Power input port, overcurrent protection circuit, filter rectifier and power detection system, the power input port are used for
Receive 24VDC power supply；The overcurrent protection circuit, for protecting circuit；The filter rectifier, for external input
Power supply is modulated；The power detection system, for detecting whether external power supply normally provides power supply for safety relay.
3. the safety relay of monitoring mechanical switch according to claim 1, which is characterized in that the forced guiding relay
Device module includes forced guiding relay and latching circuit, and the forced guiding relay is for providing contact switch, the lock
After circuit receives enabling signal for forced guiding relay, maintain forced guiding relay in running order always.
4. the safety relay of monitoring mechanical switch according to claim 1, which is characterized in that the enabling signal input
Module includes electrical-optical-electrical converting system, for isolation input and output electric signal.
5. the safety relay of monitoring mechanical switch according to claim 1, which is characterized in that further include interlock circuit system
System, the interlock circuit system is connect with the forced guiding relay module, for the mutual inspection between signal input channel
It surveys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920141871.3U CN209282130U (en) | 2019-01-24 | 2019-01-24 | Monitor the safety relay of mechanical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920141871.3U CN209282130U (en) | 2019-01-24 | 2019-01-24 | Monitor the safety relay of mechanical switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209282130U true CN209282130U (en) | 2019-08-20 |
Family
ID=67605808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920141871.3U Active CN209282130U (en) | 2019-01-24 | 2019-01-24 | Monitor the safety relay of mechanical switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209282130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855436A (en) * | 2021-03-25 | 2021-05-28 | 远景能源有限公司 | Safety device for wind driven generator |
-
2019
- 2019-01-24 CN CN201920141871.3U patent/CN209282130U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855436A (en) * | 2021-03-25 | 2021-05-28 | 远景能源有限公司 | Safety device for wind driven generator |
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