CN205941742U

CN205941742U - Lock loopback test appearance

Info

Publication number: CN205941742U
Application number: CN201620892150.2U
Authority: CN
Inventors: 管亚峰
Original assignee: Odie Promise Elevator Co Ltd Is Newly Spun In Wuxi
Current assignee: Odie Promise Elevator Co Ltd Is Newly Spun In Wuxi
Priority date: 2016-08-17
Filing date: 2016-08-17
Publication date: 2017-02-08
Anticipated expiration: 2026-08-17

Abstract

The utility model discloses a lock loopback test appearance, including circuit board and test probes, the circuit board includes fuse, return circuit equivalent load resistance, display circuit, buzzer circuit and switching power supply circuit, test probes in proper order with fuse, test button, return circuit equivalent load series resistance after ground connection, display circuit and return circuit equivalent load resistor parallel with, buzzer circuit and return circuit equivalent load resistor parallel with, switching power supply circuit and return circuit equivalent load resistor parallel with. The utility model discloses can detect each safe lock return circuit and carry state voltage down in the equivalence area, accurate, high -efficient, directly perceived, judge the state and the performance of each switch safely, the snap judgments of fault point in debugging and keeping in repair improves and installs and maintenance speed, and the reduction stops the terraced time, wins customer's satisfaction, has improved service speed and quality, has improved the credit worthiness, establishes good basis for the sustainable development of enterprise.

Description

Loop of the door lock tester

Technical field

This utility model is related to a kind of tester, more particularly, to a kind of loop of the door lock tester.

Background technology

In the actual installation of elevator, maintenance, the fault of safety and loop of the door lock accounts for 80%, existing observational method, general-purpose Table voltage detecting method and resistance detection method accurately and rapidly can not lock trouble point, have a strong impact on installation and debugging progress, maintenance Expend a lot of times, the use of impact client.

, in hoistway, the environment of hoistway is poor, high humidity for the most switch of safety and loop of the door lock, the oxidation of switch and connecing It is inevitable for touching bad, and particularly hall door lock loop, in the case of safety return circuit and loop of the door lock loose contact：(1) with ten thousand It is can not accurately to judge the switch of loose contact with the voltage gear detection voltage of table, because the input impedance of circuit tester is very high, MF47 pointer gauge is 20K Ω/V, and DC250V shelves input impedance is 20K Ω/V*250V=5M Ω, and digital table is 10M Ω.Such Under big input impedance, the loose contact of switch is to affect little (loop when therefore is Light Condition) on the voltage of measurement, That is measurement voltage normally just may not can judge that switch is normal, functional (contact resistance is little)；(2) other method resistance Measurement method, machine room short circuit loop of the door lock, slough original door lock return line, cage top overhauling runs successively measures hall door lock-switch contact electricity Resistance, but now it mostly is skyscraper, take from top to bottom and well imagine, extremely inefficient.

Content of the invention

In view of the shortcomings of the prior art, the purpose of this utility model is that and provides a kind of loop of the door lock test Instrument, detects (the load under equivalent band load state of each safety door latch loop：Run contactor coil, band-type brake contactor coil, Feng Xing Contactor coil) voltage, accurately, efficiently, state and performance directly perceived, that safely judge each switch, debugged and keeped in repair The quick judgement of middle trouble point, improves and installs and maintenance speed, reduce and stop the terraced time, and the satisfaction of Win Clients improves service Speed and quality, improve credit worthiness, are that the sustainable development of enterprise lays a good foundation.

To achieve these goals, the technical solution adopted in the utility model is such：A kind of loop of the door lock tester, Including circuit board and test probe, described circuit board includes electric fuse, loop equivalent load resistance, display circuit, buzzer Circuit and switching power circuit, after described test probe is connected with electric fuse, testing button, loop equivalent load resistance successively Ground connection；Described display circuit includes charactron, and display circuit is in parallel with loop equivalent load resistance；Described buzzer circuit bag Include active buzzer, and buzzer circuit is in parallel with loop equivalent load resistance；Described switching power circuit includes loop voltage Input filter circuit, oscillating circuit, on-off circuit, feedback circuit, mu balanced circuit and current rectifying and wave filtering circuit, and switch power supply Road is in parallel with loop equivalent load resistance.

As a kind of preferred version, described circuit board is encapsulated by lip pencil shell, and described test probe is arranged at lip pencil shell Written position.

As a kind of preferred version, described testing button, active buzzer, charactron are arranged at lip pencil shell pen.

As a kind of preferred version, an afterbody for described lip pencil shell is provided with alligator clamp, described alligator clamp ground connection.

As a kind of preferred version, described display circuit adopts two wires three bit digital voltmeter.

Compared with prior art, the beneficial effects of the utility model：This utility model can detect each safety door latch loop (load under equivalent band load state：Run contactor coil, band-type brake contactor coil, envelope star contactor coil) voltage, accurate Really, state and the performance of each switch efficiently, intuitively, are safely judged, in being debugged and keeping in repair, the quick judgement of trouble point, carries High installation and maintenance speed, reduce and stop the terraced time, and the satisfaction of Win Clients improves service rate and quality, improves prestige Degree, is that the sustainable development of enterprise lays a good foundation.

Brief description

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

Fig. 2 is structural representation of the present utility model.

Specific embodiment

With reference to specific embodiment, this utility model is further described.Following examples are only used for clearly The technical solution of the utility model is described, and protection domain of the present utility model can not be limited with this.

Embodiment：

As shown in figure 1, a kind of loop of the door lock tester, including circuit board and test probe 1, described circuit board includes guarantor Dangerous silk, loop equivalent load resistance, display circuit, buzzer circuit and switching power circuit, described test probe successively with Electric fuse, testing button S1, loop equivalent load resistance are grounded after connecting；Described display circuit includes charactron 2, and shows electricity Road is in parallel with loop equivalent load resistance；Described buzzer circuit includes active buzzer U1 and buzzer circuit is equivalent with loop Load resistance is in parallel；Described switching power circuit includes loop voltage input filter circuit, oscillating circuit, on-off circuit, feedback Circuit, mu balanced circuit and current rectifying and wave filtering circuit, and switching power circuit is in parallel with loop equivalent load resistance.

When being embodied as, first resistor R1, second resistance R2 composition loop equivalent load resistance, equivalent contactor coil, Make measure loop under band load state, the loop voltage obtaining is just true and reliable, solves the problems, such as that circuit tester input impedance is high (MF47 pointer gauge is 20K Ω/V, and DC250V shelves input impedance is 20K Ω/V*250V=5M Ω, and digital table is 10M Ω), this reality It is less than 1.5K Ω with the input impedance of new tester；Tester of the present utility model inputs electric fuse F1, press test by Button S1 works, safety return circuit rated voltage 110V, the first diode D1, the first electric capacity C1,3rd resistor R3, the first audion Q1, transformator T1, the 5th resistance R5, the 3rd electric capacity C3, the second diode D2, the 4th resistance R4, the second electric capacity C2, the three or two pole Pipe D3, the 4th diode D4, the 4th electric capacity C4, the 5th diode D5, the 5th electric capacity C5 constitute 5V switching power circuit, and wherein the One diode D1 and the first electric capacity C1 constitutes 110V loop voltage input filter circuit, 3rd resistor R3, the first audion Q1, change Depressor T1, the 5th resistance R5, the 3rd electric capacity C3, the second diode D2, the 4th resistance R4, the second electric capacity C2, the 3rd diode D3, 4th stabilivolt D4, the 4th electric capacity C4 constitute oscillating circuit, on-off circuit, feedback circuit, mu balanced circuit, the 5th diode D5 with 5th electric capacity C5 constitutes 5V current rectifying and wave filtering circuit and provides working power, the 7th resistance R7, the 6th voltage stabilizing for active buzzer U1 Pipe D6, the 6th resistance R6, the second audion Q2, active buzzer U1 constitute buzzer circuit, active honeybee when loop voltage is normal Ring device U1 pipes, and as more than voltage 100V, catalyst can reliable adhesive.When actually used, in switch board, short circuit hall door is locked back Road, disengages the output lead of former hall door lock, beats maintenance, upper car top, tester alligator clamp ground connection of the present utility model, test probe connects Loop of the door lock, numeral method loop voltage, switching power circuit exports 5V power supply, when loop voltage is more than 100V, the 6th Stabilivolt D6 punctures, the first audion Q1 conducting, and active buzzer U1 pipes, and shows that this front loop and this switch are normal, after adopt Take method of fractionation, the half position of the total floor of first straight, check upper semisection or lower semisection it is determined that upper semisection and lower semisection Afterwards, then divide 1/2nd, the rest may be inferred, can find trouble point quickly, greatly improves trouble shooting accuracy and efficiency；Segmentation The drawbacks of test solves resistance and need to successively test, greatly improves overhaul efficiency, reduces maintenance time.

As shown in Fig. 2 the preferably described circuit board of this utility model is encapsulated by lip pencil shell 3, described test probe 1 is arranged at The written position of lip pencil shell 3；Described testing button S1, active buzzer U1, charactron 2 are arranged at 3, lip pencil shell；Institute The afterbody stating lip pencil shell 3 is provided with alligator clamp 4, and described alligator clamp 4 is grounded；During enforcement, compact, without battery, take Band is convenient, and using simple, intuitive display, measurement is accurately.

The preferably described display circuit of this utility model adopts two wires three bit digital voltmeter, numerical monitor, accurately, directly perceived.

The above is only preferred implementation of the present utility model it is noted that common skill for the art For art personnel, on the premise of without departing from this utility model know-why, some improvement can also be made and deform, these change Enter and deform also to should be regarded as protection domain of the present utility model.

Claims

1. a kind of loop of the door lock tester, including circuit board with test probe it is characterised in that：Described circuit board includes insurance Silk, loop equivalent load resistance, display circuit, buzzer circuit and switching power circuit, described test probe successively with guarantor Dangerous silk, testing button, loop equivalent load resistance are grounded after connecting；Described display circuit includes charactron, and display circuit with Loop equivalent load resistance is in parallel；Described buzzer circuit includes active buzzer, and buzzer circuit and loop equivalent load Resistor coupled in parallel；Described switching power circuit include loop voltage input filter circuit, oscillating circuit, on-off circuit, feedback circuit, Mu balanced circuit and current rectifying and wave filtering circuit, and switching power circuit is in parallel with loop equivalent load resistance.

2. a kind of loop of the door lock tester according to claim 1 it is characterised in that：Described circuit board is sealed by lip pencil shell Dress, described test probe is arranged at lip pencil shell nib position.

3. a kind of loop of the door lock tester according to claim 2 it is characterised in that：Described testing button, active buzzing Device, charactron are arranged at lip pencil shell pen.

4. a kind of loop of the door lock tester according to claim 2 it is characterised in that：An afterbody for described lip pencil shell sets It is equipped with alligator clamp, described alligator clamp ground connection.

5. a kind of loop of the door lock tester according to claim 1 it is characterised in that：Described display circuit adopts two wires three Bit digital voltmeter.