CN205791474U - A kind of automatic protective system of elevator traction machine - Google Patents
A kind of automatic protective system of elevator traction machine Download PDFInfo
- Publication number
- CN205791474U CN205791474U CN201620513281.5U CN201620513281U CN205791474U CN 205791474 U CN205791474 U CN 205791474U CN 201620513281 U CN201620513281 U CN 201620513281U CN 205791474 U CN205791474 U CN 205791474U
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- China
- Prior art keywords
- phase
- relay
- traction machine
- normally open
- contactor
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Abstract
This utility model provides the automatic protective system of a kind of elevator traction machine; including start-up circuit; it includes single phase alternating current power supply, three-phase alternating-current supply, A.C. contactor; single phase alternating current power supply connects A.C. contactor by activate switch; A.C. contactor has three normally open contacts; one end of three normally open contacts connects three-phase traction machine respectively, and the other end of three normally open contacts is connected with A, B, C of three-phase alternating-current supply after being all connected with fuse respectively；Open-phase detection circuit, it includes transformator, filter capacitor, commutation diode, the first relay, the second relay, audion, resistance, light sensitive diode.A.C. contactor energising adhesive during normal startup, its three groups of normally open contacts connections, three-phase alternating-current supply is for electrically activating traction machine；Disconnected phase, the first relay power adhesive of open-phase detection circuit once occur, and its normally closed interlock disconnects, the second relay and A.C. contactor power-off release, cuts off the working power of traction machine, it is achieved open-phase automatic protection.
Description
Technical field
This utility model belongs to elevator technology field, and be specifically related to a kind of elevator traction machine protects system automatically
System.
Background technology
Hoisting motor (traction machine) by driving after decelerator speed change traction sheave to rotate, by hoist ropes with
The fricative pull strength of traction sheave realizes the lifting of car and counterweight, reaches the purpose of elevator traffic.Drag
Drawing machine is the core component that elevator runs, in actual use, due to line voltage reduction, electric current
Reducing, the reasons such as motor load is excessive can cause the break accident of phase of traction machine power supply to occur, and once occurs disconnected
Phase, traction machine underpower, it is impossible to normally work, the most possible motor damage, even cause other more
Serious security incident.Therefore, before traction machine comes into operation, open-phase protection is carried out most important.
Summary of the invention
For solving above-mentioned technical problem, what this utility model provided a kind of elevator traction machine protects system automatically
System, occurs disconnected phase time to cut off the working power of traction machine in time at traction machine, prevents traction machine from transporting mutually because of disconnected
Go and damage.
For reaching above-mentioned purpose, the technical solution of the utility model is as follows: the automatic guarantor of a kind of elevator traction machine
Protecting system, it is characterised in that: include traction machine start-up circuit and open-phase detection circuit,
Described start-up circuit includes single phase alternating current power supply, three-phase alternating-current supply, A.C. contactor KM, blow-up
Stream power supply connects A.C. contactor KM by activate switch S1, and A.C. contactor has three normally open contacts,
Being respectively the first normally open contact KM1, the second normally open contact KM2, the 3rd normally open contact KM3, three normally opened
One end of contact connects the U phase of three-phase traction machine, V phase, W phase, the other end of three normally open contacts respectively
It is connected with the A phase of three-phase alternating-current supply, B phase, C respectively after being all connected with fuse FU；
Described open-phase detection circuit includes transformator T, filter capacitor C, commutation diode VD, the first relay
Device K1, the second relay K 2, audion Q, resistance R, light sensitive diode VLS, the first relay has
One normally closed interlock K1-1, the second relay have a normally open contact K2-1, normally open contact K2-1 with
Activate switch S1 is in parallel, and the primary coil of transformator T is connected blow-up after connecting with normally open contact K2-1
Stream power supply, the secondary coil of transformator T connects filter capacitor C, the second relay K 2 and normally closed interlock K1-1
After series connection in parallel with filter capacitor C, with filter capacitor after the first relay K 1 connecting triode Q colelctor electrode
C is in parallel, the colelctor electrode of the first relay K 1 connecting triode Q, resistance R and light sensitive diode VLS string
The base stage of connecting triode Q after connection, resistance R connects the anode of light sensitive diode VLS, light sensitive diode
The negative electrode of VLS connects the first relay K 1, and the positive pole of commutation diode VD connects filter capacitor C, and it is born
The secondary coil of pole connection transformer T.
In one preferred embodiment of this utility model, farther include it and also include testing circuit, described test
Circuit includes test switch S2, test display lamp L1, after test switch S2 connects with test display lamp L1
Connect single phase alternating current power supply, described test display lamp L1 be sealingly mounted at light sensitive diode VLS together with shape
Become photodiode.
In one preferred embodiment of this utility model, farther include described open-phase detection circuit and also include three
Open-phase indicting lamp L2, L3, L4, three open-phase indicting lamps are in parallel with three described fuse FU respectively.
The beneficial effects of the utility model are: a kind of elevator traction machine of the present utility model automatically protect system
System, A.C. contactor energising adhesive during normal startup, its three groups of normally open contacts connections, three-phase alternating-current supply
For electrically activating traction machine；The once disconnected phase of generation, the first relay power adhesive of open-phase detection circuit, its
Normally closed interlock disconnects, the second relay and A.C. contactor power-off release, cuts off the working power of traction machine,
Realize the open-phase automatic protection of traction machine.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment technology, below will be to enforcement
In the description of example technology, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is only embodiments more of the present utility model, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the power principle figure of this utility model preferred embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technology in this utility model embodiment
Scheme is clearly and completely described, it is clear that described embodiment is only this utility model one
Divide embodiment rather than whole embodiments.Based on the embodiment in this utility model, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into this
The scope of utility model protection.
Embodiment
As it is shown in figure 1, the present embodiment discloses the automatic protective system of a kind of elevator traction machine, including draging
Draw machine start-up circuit, open-phase detection circuit and test circuit,
Described start-up circuit includes single phase alternating current power supply, three-phase alternating-current supply, A.C. contactor KM, blow-up
Stream power supply connects A.C. contactor KM by activate switch S1, and A.C. contactor has three normally open contacts,
Being respectively the first normally open contact KM1, the second normally open contact KM2, the 3rd normally open contact KM3, three normally opened
One end of contact connects the U phase of three-phase traction machine, V phase, W phase, the other end of three normally open contacts respectively
It is connected with the A phase of three-phase alternating-current supply, B phase, C respectively after being all connected with fuse FU；
Described open-phase detection circuit includes transformator T, filter capacitor C, commutation diode VD, the first relay
Device K1, the second relay K 2, audion Q, resistance R, light sensitive diode VLS, the first relay has
One normally closed interlock K1-1, the second relay have a normally open contact K2-1, normally open contact K2-1 with
Activate switch S1 is in parallel, and the primary coil of transformator T is connected blow-up after connecting with normally open contact K2-1
Stream power supply, the secondary coil of transformator T connects filter capacitor C, the second relay K 2 and normally closed interlock K1-1
After series connection in parallel with filter capacitor C, with filter capacitor after the first relay K 1 connecting triode Q colelctor electrode
C is in parallel, the colelctor electrode of the first relay K 1 connecting triode Q, resistance R and light sensitive diode VLS string
The base stage of connecting triode Q after connection, resistance R connects the anode of light sensitive diode VLS, light sensitive diode
The negative electrode of VLS connects the first relay K 1, and the positive pole of commutation diode VD connects filter capacitor C, and it is born
The secondary coil of pole connection transformer T；
Described test circuit includes test switch S2, test display lamp L1, test switch S2 and test instruction
Connecting single phase alternating current power supply after lamp L1 series connection, described test display lamp L1 and light sensitive diode VLS seals
It is installed together formation photodiode.
Described open-phase detection circuit also includes three open-phase indicting lamp L2, L3, L4, and three open-phase indicting lamps divide
Not in parallel with three described fuse FU.
Based on foregoing circuit structure, this utility model realizes traction machine startup, open-phase protection and test function
Work process is as follows:
During startup: connect activate switch S1, A.C. contactor KM is energized adhesive, and its three groups of normally open contacts connect
Logical, traction machine starts rotation, and single phase alternating current power supply is whole through transformator T blood pressure lowering, commutation diode VD simultaneously
After stream and filter capacitor C filtering, make the second relay through the normally closed interlock K1-1 of the first relay K 1
K2 is energized adhesive, and its normally open contact K2-1 connects so that AC relay KM is unclamping activate switch S1
After remain to lock adhesive.
During open-phase protection: when traction machine normally starts, three open-phase indicting lamp L2, L3, L4 all do not work,
Disconnected phase, the fuse blows of corresponding phase once occur, the open-phase indicting lamp in parallel with this fuse is lighted,
Making light sensitive diode VLS conducting internal resistance diminish, audion Q saturation conduction, the first relay K 1 energising is inhaled
Closing, its normally closed interlock K1-1 disconnects, the second relay K 2 and A.C. contactor KM power-off release, cuts off
The working power of traction machine, it is achieved the purpose of open-phase protection.
During test: when traction machine is properly functioning, pressing test switch S2, test display lamp L1 lights,
Also light sensitive diode VLS and audion Q conducting, the first relay K 1 adhesive, the second relay K 2 can be made
Discharge with A.C. contactor KM, traction machine power-off stall.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this
Utility model.To the multiple amendment of these embodiments will be for those skilled in the art aobvious and
Being clear to, generic principles defined herein can be without departing from spirit or scope of the present utility model
In the case of, realize in other embodiments.Therefore, this utility model is not intended to be limited to illustrated herein
These embodiments, and be to fit to consistent with principles disclosed herein and features of novelty the widest
Scope.
Claims (3)
1. the automatic protective system of an elevator traction machine, it is characterised in that: include traction machine start-up circuit and
Open-phase detection circuit,
Described start-up circuit includes single phase alternating current power supply, three-phase alternating-current supply, A.C. contactor (KM), single
Cross streams power supply connects A.C. contactor (KM) by activate switch (S1), and A.C. contactor has three
Individual normally open contact, the respectively first normally open contact (KM1), the second normally open contact (KM2), the 3rd normal
Open contact (KM3), one end of three normally open contacts connects the U phase of three-phase traction machine, V phase, W phase respectively,
The other end of three normally open contacts be all connected with after fuse (FU) respectively with A phase, the B of three-phase alternating-current supply
Phase, C are connected；
Described open-phase detection circuit include transformator (T), filter capacitor (C), commutation diode (VD),
First relay (K1), the second relay (K2), audion (Q), resistance (R), photosensitive two poles
Pipe (VLS), the first relay has a normally closed interlock (K1-1), and the second relay often has one
Open contact (K2-1), normally open contact (K2-1) is in parallel with activate switch (S1), transformator (T)
Primary coil is connected single phase alternating current power supply, the secondary of transformator (T) after connecting with normally open contact (K2-1)
Coil connect filter capacitor (C), the second relay (K2) connect with normally closed interlock (K1-1) after with filter
Ripple electric capacity (C) is in parallel, with filter capacitor after the first relay (K1) connecting triode (Q) colelctor electrode
(C) in parallel, the colelctor electrode of the first relay (K1) connecting triode (Q), resistance (R) and photosensitive
The base stage of connecting triode (Q) after diode (VLS) series connection, resistance (R) connects light sensitive diode (VLS)
Anode, the negative electrode of light sensitive diode (VLS) connects the first relay (K1), commutation diode (VD)
Positive pole connect filter capacitor (C), the secondary coil of its negative pole connection transformer (T).
The automatic protective system of a kind of elevator traction machine the most according to claim 1, it is characterised in that:
It also includes testing circuit, and described test circuit includes test switch (S2), test display lamp (L1),
Test switch (S2) is connected single phase alternating current power supply after test display lamp (L1) series connection, and described test refers to
Show that lamp (L1) forms photodiode together with being sealingly mounted at light sensitive diode (VLS).
The automatic protective system of a kind of elevator traction machine the most according to claim 2, it is characterised in that:
Described open-phase detection circuit also includes three open-phase indicting lamps (L2, L3, L4), three open-phase indicting lamps
In parallel with three described fuses (FU) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620513281.5U CN205791474U (en) | 2016-05-31 | 2016-05-31 | A kind of automatic protective system of elevator traction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620513281.5U CN205791474U (en) | 2016-05-31 | 2016-05-31 | A kind of automatic protective system of elevator traction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205791474U true CN205791474U (en) | 2016-12-07 |
Family
ID=58139388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620513281.5U Expired - Fee Related CN205791474U (en) | 2016-05-31 | 2016-05-31 | A kind of automatic protective system of elevator traction machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205791474U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711923A (en) * | 2017-02-17 | 2017-05-24 | 中领世能（天津）科技有限公司 | Isolation protection device and power supply system |
| CN106711922A (en) * | 2017-02-17 | 2017-05-24 | 中领世能（天津）科技有限公司 | Electrical shock protection device and power supply system |
-
2016
- 2016-05-31 CN CN201620513281.5U patent/CN205791474U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711923A (en) * | 2017-02-17 | 2017-05-24 | 中领世能（天津）科技有限公司 | Isolation protection device and power supply system |
| CN106711922A (en) * | 2017-02-17 | 2017-05-24 | 中领世能（天津）科技有限公司 | Electrical shock protection device and power supply system |
| CN106711922B (en) * | 2017-02-17 | 2018-06-08 | 中领世能（天津）科技有限公司 | Electrical shock protective device and electric power system |
| CN106711923B (en) * | 2017-02-17 | 2018-06-19 | 中领世能（天津）科技有限公司 | Isolating and protecting device and electric power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20210531 |