CN201494978U

CN201494978U - Fault detector of safety control circuit of mine temporary hoister

Info

Publication number: CN201494978U
Application number: CN2009202349859U
Authority: CN
Inventors: 冯旭东; 施云峰; 魏金山; 陈绪文; 陆杰
Original assignee: China Coal No 3 Construction Group Co Ltd
Current assignee: China Coal No 3 Construction Group Co Ltd
Priority date: 2009-08-01
Filing date: 2009-08-01
Publication date: 2010-06-02
Anticipated expiration: 2019-08-01

Abstract

The utility model discloses a fault detector of a safety control circuit of a mine temporary hoister, which belongs to a detecting instrument, and comprises a plurality of detection relays JC and a plurality of fault output relays JX, which are connected to all the protection branches of the security protecting circuit of a hoister, wherein the common terminals of all the detection relays JC are connected onto the power line of a safety circuit, and the other terminals are respectively connected onto all the detection points in all the protection braches in the safety circuit; and one group of normally-closed contacts of all the fault output relays JX is connected to the circuit and is used for signal locking in the fault output, one of the other two normally open contacts is connected with all the fault indicator lights L, and the other one is used for self protection. Once the safety circuit is powered down, the utility model can instantly display the fault position, simultaneously the fault problem can realize self locking to facilitate the overhauling personnel to check at any time, the fault detector is time and labor saving, fault can be effectively solved, and thereby unnecessary potential safety hazard can be avoided.

Description

The interim mine hoist safety control loop of mine fault detector

Technical field

The utility model relates to a kind of detecting instrument, specifically is the interim mine hoist safety control loop of a kind of mine fault detector.The real-time online that is specially adapted to the mine hoist safety control loop detects.

Technical background

The gig winch is as an important lifting means in the present coal construction industry, and its protection is cooresponding complete, and these protections are all gone here and there in the safety return circuit of winch one by one.Just because of more than the protection in the safety return circuit, so once unexpected power down appears in the mine hoist safety loop, cause safety return circuit to send and do not power on, this will bring certain degree of difficulty to the winch service personnel.

Certainly the power down of mine hoist safety loop also has another kind of situation, and that is exactly the just unexpected power down of safety return circuit in operational process of gig, and then send safety return circuit can serve electricity again.The reason of this problem might be which closing of contact in the safety return circuit is bad, and this in-and-out problem is also taken some times and just can be found out.That have even all can not check the reason of problem.In order not influence production, just taked the way to the safety return circuit short circuit at last, it is unfavorable that this has brought to safety.

The safety protective circuit of gig has 1. overtravel protection as shown in Figure 1; 2. overspeed protection; 3. overload and low-voltage protection; 4. speed-limiting protection; 5. depth indicator transmission failure protection; 6. brake rubber block wearing and tearing or brake clearance protection; 7. rope creep protection; 8. deceleration fender guard.These protections are serially connected in the safety return circuit one by one, so in case very big inconvenience during because of protection action power down suddenly, will be brought to maintenance in the mine hoist safety loop.Take long to each protection of winch is investigated one by one, influence the normal construction of engineering.If which closing of contact is bad in the safety return circuit, in the time of also can causing safety return circuit and during power down and normal.It is consuming time very big to make service personnel look into circuit, even can not check problem sometimes at all, have to cause the safety guard-safeguard disappearance directly with the safety return circuit short circuit, will bring great potential safety hazard to the gig running like this.

Summary of the invention

For solving the problems of the technologies described above, the utility model provides the interim mine hoist safety control loop of a kind of mine fault detector, and it can detect in real time to the fault in the mine hoist safety loop.In case power down appears in safe safety return circuit, it just can show the position that fault takes place at once, and this failure problems realizes self-locking, thereby make things convenient for service personnel to check at any time, time and labour saving, fault also can effectively be solved, and also avoid unnecessary potential safety hazard simultaneously for construction gains time.

The utility model is realized with following technical scheme: the interim mine hoist safety control loop of a kind of mine fault detector, it is characterized in that comprising that being connected the mine hoist safety protective circuit respectively protects on the branch road several to detect relay J C and several fault output relays JX, each common port that detects relay J C is connected on the power lead in the safety return circuit, and all the other each ends are connected on respectively on each check point of respectively protecting in the safety return circuit in the branch road by wire size; Each fault output relay JX has one group of normally closed contact to be connected in the circuit, uses as the signal block in the fault output, and one of two other open contact is connected the guaranteeing certainly of another conduct own with each failure problems indicator lamp L.

Gig is under normal service condition; the relay AC of its safety return circuit is in attracting state; so string each protection contact in safety return circuit all is closed conducting; therefore respectively detecting relay J C also all is adhesive; each detects relay J C can't form path; so any one adhesive can not occur, just not have any fault yet and show.

And when disconnecting appears in a certain point in its safety return circuit, its relevant detection relay J C dead electricity and disconnecting, its normally closed contact closure, cooresponding fault output relay JX relay adhesive and self-insurance, one group of normally closed point on the JX relay disconnects simultaneously, realize the locking of next stage with this, the closed cooresponding fault-indicating lamp of another group open contact is bright, thereby demonstrates location of fault.

The beneficial effects of the utility model are: can the fault in the mine hoist safety loop be detected in real time.In case power down appears in safe safety return circuit, can show the position that fault takes place at once, and this failure problems realizes self-locking, thereby make things convenient for service personnel to check at any time, time and labour saving, fault also can effectively be solved, and also avoid unnecessary potential safety hazard simultaneously for construction gains time.

Description of drawings

Fig. 1 is existing mine hoist safety protective circuit figure;

Fig. 2 is the utility model circuit diagram.

The specific embodiment

As shown in Figures 2 and 3, present embodiment has used 16 wireline inspection relay J C1-JC16 and 16 fault output relay JX1-JX16.Relay J C1～JC16 is respectively as the detection relay usefulness in mine hoist safety loop, and the common port of its each relay is connected on No. 301 lines in the mine hoist safety loop, and all the other each ends are connected on respectively on each check point in the safety return circuit by wire size.FA is a reset button, and as the fault output relay usefulness of each trouble point, as the locking of each trouble point use respectively by one group of normally closed contact above it for relay J X1～JX16.Two other open contact is used as itself self-insurance and failure problems indicator lamp respectively.Wherein 1020,1024 is the direct supply of DC24V, and 301,302 is that source of AC and the mine hoist safety loop feature of AC220V taken from same power supply.

In the safety return circuit of winch, each big protection all is the Fig. 1 that sees that is cascaded, and after the complete closure of each contact was good, AC in the safety return circuit and ACJ relay were just understood adhesive.

The utility model is that 16 wireline inspection relay J C1-JC16 are received respectively on the contact of each protection in the mine hoist safety loop.When each protection contact in the mine hoist safety loop contacts when good; JC1-JC16 is in attracting state; when the some protection contact open in the safety return circuit; its cooresponding detection relay will lose electricity and disconnect, and its ct-off signal is reflected on the fault output relay by the normally closed contact of self simultaneously.

16 fault output relay JX1-JX16 of safety return circuit detector are that the break-make with the protection contact in the mine hoist safety loop is directly reflected on 16 indicator lamp L1-L16; 16 indicator lamps are being represented 16 protections in the mine hoist safety loop respectively; when one of them indicator lamp is bright, just illustrate that its pairing that protection goes wrong.

For example: when the protection of the PLJ in mine hoist safety loop contact open; its all wireline inspection relays that are connected on before the PLJ protection contact all will be in off-state (as JC1-JC6), be connected on PLJ protection contact all wireline inspection relays afterwards and also will be in attracting state (as JC7-JC16).At this moment be in its normally closed point of JC1-JC6 under the off-state all with closure, thereby also cause the adhesive of JX6 relay, the one group of realization self-insurance of often making war of himself when the adhesive of JX6 relay, another organizes the spurious signal that normally closed point disconnects upper class, the normal battle of last group is connected on the indicator lamp, and just L6 will demonstrate the problem place.

Principle of work is: gig is under normal service condition; safety return circuit relay AC shown in its Fig. 1 is in attracting state; so string each protection contact in safety return circuit all is closed conducting; therefore detecting relay J C1～JC16 also all is adhesive; relay J X1～JX16 can't form path; so any one adhesive can not occur, just not have any fault yet and show.

And when disconnecting appears in a certain point in its safety return circuit, its relevant detection relay J C dead electricity and disconnecting, its normally closed contact closure, adhesive of cooresponding JX relay and self-insurance, one group of normally closed point on the JX relay disconnects simultaneously, realize the locking of next stage with this, the closed cooresponding fault-indicating lamp of another group open contact is bright, thereby demonstrates location of fault.

Gig is under normal operation, certain point in its safety return circuit is because of closure when bad, in the time of can occurring and when logical and disconnected phenomenon, but it can not influence the use of detector, in case disconnecting has appearred once in a point in the safety return circuit, though it oneself closed again, detector can show the point that broke down just now equally, reason is that the JX relay has individual self-insurance point, carries out trouble shooting unless click fault reset button FA.Bring great convenience so just for the gig check man.

Claims

1. the interim mine hoist safety control loop of mine fault detector, it is characterized in that comprising that being connected the mine hoist safety protective circuit respectively protects on the branch road several to detect relay J C and several fault output relays JX, each common port that detects relay J C is connected on the power lead in the safety return circuit, and all the other each ends are connected on respectively on each check point of respectively protecting in the safety return circuit in the branch road by wire size; Each fault output relay JX has one group of normally closed contact to be connected in the circuit, uses as the signal block in the fault output, and one of two other open contact is connected the guaranteeing certainly of another conduct own with each failure problems indicator lamp L.