CN203433092U

CN203433092U - Multifunctional detection bench for mining switches

Info

Publication number: CN203433092U
Application number: CN201320499105.7U
Authority: CN
Inventors: 安建华; 王海泉; 王义雷; 郭海强
Original assignee: 郭海强
Priority date: 2013-08-15
Filing date: 2013-08-15
Publication date: 2014-02-12
Anticipated expiration: 2023-08-15

Abstract

The utility model discloses a multifunctional detection bench for mining switches. The multifunctional detection bench is mainly composed of a disconnecting switch QS, a test transformer T, a control transformer TC, a three-phase contactor KM1, a three-phase contactor KM2, a motor integration protector JDB, an I starting button SB3, an I starting button SB4, a II starting button SB1, a II starting button SB2, an I work indicating lamp HL1, a II work indicating lamp HL2, a three-phase input voltmeter V1 and a three-phase output voltmeter V2. Through operation of the I starting button SB3, the I starting button SB4, the II starting button SB1 and the II starting button SB2, the switches can be maintained under no load, work tests of the switches with loads can be carried out, leakage wounding prevention of motor integration protection is realized, and an over-current protection effect when a short circuit occurs due to wrong wiring because of carelessness is also realized.

Description

Mine Switch multifunctional examining scaffold tower

Technical field

The utility model relates to a kind of test unit, especially a kind of Mine Switch multifunctional examining scaffold tower.

Background technology

For a long time, the maintenance of coal mine switch is all directly to send electrical source of power work, in maintenance process, be there is to very large hidden danger in those careless and inadvertent maintainers, the lighter causes device damage, the severe one personnel that cause get an electric shock injures and deaths or electric burn, therefore, designing the Mine Switch multifunctional examining scaffold tower that in a kind of fundamentally solution personnel electric shock and maintenance process, wrong line causes the electric arc of large short circuit current generation to hurt sb.'s feelings, is the current technical issues that need to address.

Summary of the invention

Technical problem to be solved in the utility model is to provide the Mine Switch multifunctional examining scaffold tower that in a kind of fundamentally solution personnel electric shock and maintenance process, wrong line causes the electric arc of large short circuit current generation to hurt sb.'s feelings.

The technical scheme in the invention for solving the technical problem is:

Mine Switch multifunctional examining scaffold tower, mainly by disconnector QS, testing transformer T, control transformer TC, three-phase contactor KM1, three-phase contactor KM2, comprehensive protector of motor JDB, I start button SB3, I stop button SB4, II start button SB1, II stop button SB2, I relay indicating light HL1, II relay indicating light HL2, three-phase input voltage Table V 1, three-phase output voltage Table V 2 forms, and the input end of disconnector QS meets respectively the A of three-phase supply, B, C phase, the input end of the output termination three-phase contactor KM1 of disconnector QS, the output terminal of three-phase contactor KM1 connects the input end of comprehensive protector of motor JDB and the input end of three-phase contactor KM2 simultaneously, the input end of the output termination testing transformer T of three-phase contactor KM2, the output terminal of the output termination disconnector QS of testing transformer T, three-phase input voltage Table V 1 is connected on the output terminal of testing transformer T, and three-phase output voltage Table V 2 is connected to the output terminal U of comprehensive protector of motor JDB, V, on W, the input end of control transformer TC is connected on any two output terminals of disconnector QS, control transformer TC has 220V and two output terminals of 36V, I relay indicating light HL1 is connected in parallel on the 220V output terminal of control transformer TC, on the 220V output terminal of control transformer TC, work socket is installed, II relay indicating light HL2 is connected in parallel on the 36V output terminal of control transformer TC, the 36V output terminal of control transformer TC respectively with the L of comprehensive protector of motor JDB, M pin connects, at the L of comprehensive protector of motor JDB, an inner contact Y0 by comprehensive protector of motor JDB between M pin is connected with two parallel control loops, and what one of them control loop was connected is KM1 coil, normally closed contact KM2-2 of KM2, II stop button SB2 and II start button SB1, be parallel with a KM1 normally opened contact KM1-1 at II start button SB1 two ends, what another control loop was connected is KM2 coil, a normally closed contact KM1-2 of KM1, I stop button SB4 and I start button SB3, at I start button SB3 two ends, be parallel with a KM2 normally opened contact KM2-1, the R+ pin ground connection of comprehensive protector of motor JDB is in series with the normally closed contact KM1-3 of a KM1 and the normally closed contact KM2-3 of a KM2 between the R-of comprehensive protector of motor JDB pin and any one output terminal of comprehensive protector of motor JDB.By operation I start button SB3, I stop button SB4, II start button SB1, II stop button SB2, can carry out the unloaded maintenance of switch, the test of switch band load operation and realize motor comprehensive protection prevent that electric leakage from hurting sb.'s feelings and careless and inadvertent wrong line is short-circuited time overcurrent protection.

As a kind of preferred version of the present utility model, between the output terminal of disconnector QS and the input end of three-phase contactor KM1, be provided with fuse FU1, FU2 and FU3; On the loop of the 220V of control transformer TC output terminal and I relay indicating light HL1 formation, be provided with fuse FU4; On the loop of the 36V of control transformer TC output terminal and II relay indicating light HL2 formation, be provided with fuse FU5.

Principle of the present utility model:

The unloaded maintenance of switch part: this circuit has been the service work of switch, it delivers to testing transformer T by FU1 FU2 FU3 insurance by voltage after having QS disconnector power transmission, with control transformer TC, three-phase voltage meter shows source voltage simultaneously, 36 volts of power supplys of control transformer, by insurance, FU5 delivers to comprehensive protector of motor, and send into control loop by protector JDB contact M-Y0, press start button SB3, if now comprehensive protector of motor detects, there is no leak current fault M-Y junction closure, stop button SB4 junction closure, by KM1-2, interlock contact, the adhesive of KM2 contactor, KM2-1 self-insurance, three-phase output voltage table shows rated voltage, the little current switch of rated voltage detects and can carry out, while stopping, pressing SB4 stop button, can make KM2 relay disconnect quits work, 220 volts of power supplys of control transformer are the standby power supplies that facilitates maintainer to use electric soldering iron and detecting instrument to use in maintenance process.

Switch band load operation: this circuit is to have overhauled on-load real work after switch; the actual on-load ability of the good switch of trouble hunt ing; it completes after the unloaded maintenance of switch part operation; SB1 start button is pressed in the test of last on-load ability of carrying out, and now the power supply of operation circuit is by the M-Y0 contact of comprehensive protector of motor JDB, and SB2 stop button and KM2-2 interlocking contact make KM1-1 contactor inhale merga pass KM1-1 self-insurance three-phase output voltage table to show that output voltage completes on-load test.

Motor comprehensive protection part: this circuit is to prevent that maintainer from touching the power supply personnel that cause at maintenance process and injuring with switch and answer wrong line to cause overload or the control section of open-phase protection, this is an integrated protection plug-in unit, there is overcurrent, disconnected phase, the three kinds of protections of leaking electricity, L-M connects 36 volts of AC power and powers to protector under normal circumstances, when detection line is over the ground by the auxiliary contact KM1-3 of contactor KM1, send into comprehensive protector of motor R-with the auxiliary contact KM2-3 of contactor KM2, R+ ground connection formation detection loop judgement earth leakage current M-Y0 contact opening operation loop when lower than setting value disconnects starting plays earth leakage protection object.Overcurrent and open-phase protection judge whether balance of size of current and electric current by the three-phase mutual inductor in comprehensive protector of motor; when surpassing setting value or current imbalance; M-Y0 contact opening operation loop disconnects; control loop releasing contactor KM1 with no pressure or KM2 disconnect, and play overcurrent and open-phase protection object.

Compared with prior art, the utility model has solved the technical matters that the coal mine switch electric shock that operating personnel's negligence causes in maintenance process is hurted sb.'s feelings, reduced that spare part that large short circuit current that switch operating personnel's negligence in maintenance process causes causes damages or equipment scrapping ，Wei enterprise brings remarkable benefit.

Accompanying drawing explanation

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

Mine Switch multifunctional examining scaffold tower, mainly by disconnector QS, testing transformer T, control transformer TC, three-phase contactor KM1, three-phase contactor KM2, comprehensive protector of motor JDB, I start button SB3, I stop button SB4, II start button SB1, II stop button SB2, I relay indicating light HL1, II relay indicating light HL2, three-phase input voltage Table V 1, three-phase output voltage Table V 2 forms, and the input end of disconnector QS meets respectively the A of three-phase supply, B, C phase, the input end of the output termination three-phase contactor KM1 of disconnector QS, the output terminal of three-phase contactor KM1 connects the input end of comprehensive protector of motor JDB and the input end of three-phase contactor KM2 simultaneously, the input end of the output termination testing transformer T of three-phase contactor KM2, the output terminal of the output termination disconnector QS of testing transformer T, three-phase input voltage Table V 1 is connected on the output terminal of testing transformer T, and three-phase output voltage Table V 2 is connected to the output terminal U of comprehensive protector of motor JDB, V, on W, the input end of control transformer TC is connected on any two output terminals of disconnector QS, control transformer TC has 220V and two output terminals of 36V, I relay indicating light HL1 is connected in parallel on the 220V output terminal of control transformer TC, on the 220V output terminal of control transformer TC, work socket is installed, II relay indicating light HL2 is connected in parallel on the 36V output terminal of control transformer TC, the 36V output terminal of control transformer TC respectively with the L of comprehensive protector of motor JDB, M pin connects, at the L of comprehensive protector of motor JDB, an inner contact Y0 by comprehensive protector of motor JDB between M pin is connected with two parallel control loops, and what one of them control loop was connected is KM1 coil, normally closed contact KM2-2 of KM2, II stop button SB2 and II start button SB1, be parallel with a KM1 normally opened contact KM1-1 at II start button SB1 two ends, what another control loop was connected is KM2 coil, a normally closed contact KM1-2 of KM1, I stop button SB4 and I start button SB3, at I start button SB3 two ends, be parallel with a KM2 normally opened contact KM2-1, the R+ pin ground connection of comprehensive protector of motor JDB is in series with the normally closed contact KM1-3 of a KM1 and the normally closed contact KM2-3 of a KM2 between the R-of comprehensive protector of motor JDB pin and any one output terminal of comprehensive protector of motor JDB.

Between the output terminal of disconnector QS and the input end of three-phase contactor KM1, be provided with fuse FU1, FU2 and FU3; On the loop of the 220V of control transformer TC output terminal and I relay indicating light HL1 formation, be provided with fuse FU4; On the loop of the 36V of control transformer TC output terminal and II relay indicating light HL2 formation, be provided with fuse FU5.

Claims

1. Mine Switch multifunctional examining scaffold tower, mainly by disconnector QS, testing transformer T, control transformer TC, three-phase contactor KM1, three-phase contactor KM2, comprehensive protector of motor JDB, I start button SB3, I stop button SB4, II start button SB1, II stop button SB2, I relay indicating light HL1, II relay indicating light HL2, three-phase input voltage Table V 1, three-phase output voltage Table V 2 forms, it is characterized in that, the input end of disconnector QS meets respectively the A of three-phase supply, B, C phase, the input end of the output termination three-phase contactor KM1 of disconnector QS, the output terminal of three-phase contactor KM1 connects the input end of comprehensive protector of motor JDB and the input end of three-phase contactor KM2 simultaneously, the input end of the output termination testing transformer T of three-phase contactor KM2, the output terminal of the output termination disconnector QS of testing transformer T, three-phase input voltage Table V 1 is connected on the output terminal of testing transformer T, three-phase output voltage Table V 2 is connected to the output terminal U of comprehensive protector of motor JDB, V, on W, the input end of control transformer TC is connected on any two output terminals of disconnector QS, control transformer TC has 220V and two output terminals of 36V, I relay indicating light HL1 is connected in parallel on the 220V output terminal of control transformer TC, on the 220V output terminal of control transformer TC, work socket is installed, II relay indicating light HL2 is connected in parallel on the 36V output terminal of control transformer TC, the 36V output terminal of control transformer TC respectively with the L of comprehensive protector of motor JDB, M pin connects, L at comprehensive protector of motor JDB, an inner contact Y0 by comprehensive protector of motor JDB between M pin is connected with two parallel control loops, what one of them control loop was connected is KM1 coil, normally closed contact KM2-2 of KM2, II stop button SB2 and II start button SB1, at II start button SB1 two ends, be parallel with a KM1 normally opened contact KM1-1, what another control loop was connected is KM2 coil, a normally closed contact KM1-2 of KM1, I stop button SB4 and I start button SB3, at I start button SB3 two ends, be parallel with a KM2 normally opened contact KM2-1, the R+ pin ground connection of comprehensive protector of motor JDB, between the R-of comprehensive protector of motor JDB pin and any one output terminal of comprehensive protector of motor JDB, be in series with the normally closed contact KM1-3 of a KM1 and the normally closed contact KM2-3 of a KM2.

2. Mine Switch multifunctional examining scaffold tower according to claim 1, is characterized in that, between the output terminal of disconnector QS and the input end of three-phase contactor KM1, is provided with fuse FU1, FU2 and FU3; On the loop of the 220V of control transformer TC output terminal and I relay indicating light HL1 formation, be provided with fuse FU4; On the loop of the 36V of control transformer TC output terminal and II relay indicating light HL2 formation, be provided with fuse FU5.