CN101780911A - Elevator protection device - Google Patents
Elevator protection device Download PDFInfo
- Publication number
- CN101780911A CN101780911A CN 201010114409 CN201010114409A CN101780911A CN 101780911 A CN101780911 A CN 101780911A CN 201010114409 CN201010114409 CN 201010114409 CN 201010114409 A CN201010114409 A CN 201010114409A CN 101780911 A CN101780911 A CN 101780911A
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- Prior art keywords
- elevator
- protection device
- relay
- circuit
- loop
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Abstract
The invention discloses an elevator protection device which is electrically connected with an elevator master control loop through a relay. The elevator protection device comprises a seal core contactor coil loop which is controlled by the relay, and a normally-opened contact of the relay is serially connected with a normally-opened contact of a seal core contactor and then connected to the seal core contactor coil loop. The invention can effectively prevent an elevator from rolling, and improve the operation security of the elevator.
Description
Technical field
The present invention relates to a kind of elevator protection device, particularly relate to a kind of elevator protection device that is applied on the elevator synchronous dynamo and can prevents elevator slide car.
Background technology
The towing machine elevator all is provided with velocity limiter-safety tongs system usually at present, its objective is when the car downstream rate surpasses 115%～150% (different ladder speed) of command speed by the effective stop car of systemic effect.And the car of elevator is the up-and-down movement parts, just need install velocity limiter-safety tongs protection or the protection of car bidirectional safety tongs additional to heavy side for up-running over-speed protection, and this makes structure become complicated.Only have an appointment in the elevator that uses in the world today and 5% bidirectional protective is housed, 95% elevator does not all have this type of protection, causes and lacks the actv. protection when slipping car when the towing machine band-type brake loses efficacy.
Summary of the invention
Technical matters to be solved by this invention is to exist and lack because of the lost efficacy defective of the effective protection when causing that elevator slips car of towing machine band-type brake in order to overcome existing elevator, provides a kind of elevator that can prevent to slip car and improve the safety of operation and the elevator protection device of reliability.
The present invention solves above-mentioned technical matters by following technical proposals: a kind of elevator protection device; this device is electrically connected with the elevator main control loop by a relay; it is characterized in that; it comprises: one by the envelope core contactless coil loop under this relay control, and the open contact of this relay is connected in series the back by a governor outlet contactless coil and inserts this envelope core contactless coil loop with the open contact of this envelope core contactless switch.
Wherein, it also is electrically connected a time delay circuit at this relay and this envelope core contactless coil loop, and this time delay circuit is used for the time-delay behind the coil losing electricity.
Wherein, the delay time of this time delay circuit control is 2s～5s.
Wherein, also be electrically connected an overcurrent protection circuit between this relay and this envelope core contactless coil loop, this overcurrent protection circuit is used for the protection of tamper seal core contactless switch.
Wherein, this elevator main control loop also comprises an armature winding circuit, and the normally closed contact of this envelope core contactless switch inserts this armature winding circuit, is used for this armature loop of short circuit.
Wherein, the open contact of this governor outlet contactless switch is electrically connected with the synchronous dynamo of this armature winding circuit, is used to control the output of this synchronous dynamo.
Positive progressive effect of the present invention is: the present invention is applied on the elevator synchronous dynamo, and can effectively prevent elevator slide car, has improved the safety and the reliability of elevator operation.
Description of drawings
Fig. 1 is the schematic circuit diagram of a preferred embodiment of the present invention.
Fig. 2 is the motor governor circuit figure of a preferred embodiment of the present invention.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
As depicted in figs. 1 and 2, the invention provides a kind of elevator protection device, it is by time delay circuit, overvoltage crowbar and control envelope core contactless switch KAY wire loop, and governor outlet contactless switch KMY forms.Power supply AC is inserted by the relay K 1 of elevator main control loop, through being added on the envelope core contactless switch KAY coil break-make of control envelope core contactless switch KAY wire loop after time delay circuit and the overvoltage crowbar.The road open contact of envelope core contactless switch KAY is connected in the envelope core contactless switch KAY wire loop, and two groups of normally closed contacts of envelope core contactless switch KAY insert armature winding circuits, is used for the short circuit armature loop.Time delay circuit is used for producing the time-delay of 2s～5s, time-delay can be set at about 3s, dead electricity again after the time-delay of envelope core contactless switch KAY coil avoids sealing core contactless switch KAY normally closed contact when current of electric is very big when guaranteeing that elevator stops, directly short circuit armature loop and burn out motor.Overvoltage crowbar can play when external voltage raises, and prevents to burn out the effect of envelope core contactless switch.
As depicted in figs. 1 and 2, control principle of the present invention is specific as follows:
During the elevator operation, the state of the open contact of the relay K 1 on the elevator main control loop becomes closure by disconnection, the coil of envelope core contactless switch KAY immediately electric, its normally closed contact state becomes disconnection by closure thereupon, the while, its open contact state became closure by disconnection.The coil of the contactless switch of governor outlet afterwards KMY gets electric, and the open contact state of governor outlet contactless switch KMY becomes closure by disconnection, and governor is normally exported, and synchronous dynamo gets electric, and elevator brings into operation.
When elevator stops, the state of the open contact of the relay K 1 on the elevator main control loop becomes disconnection by closure, the coil of governor outlet contactless switch KMY is dead electricity immediately, the state of its open contact becomes disconnection by closure thereupon, the coil that seals core contactless switch KAY afterwards is through time delay circuit dead electricity after time-delay a period of time, the state of envelope core contactless switch KAY normally closed contact becomes closure by disconnection, and armature loop is by short circuit.The magnetic field that the permanent magnet of static armature loop cutting rotation this moment produces and induce electro-motive force, in the armature winding circuit of closure, cause electric current, this electric current produces a torque under the effect of magnetic field, this torque makes rotor get off by rotation is static on rotor.Permanent magnet and closed armature winding circuit mutual action are realized the self-closing noncontact bidirectional protective that stops.
The present invention is applied on the elevator synchronous dynamo, can effectively prevent elevator slide car, has improved the safety and the reliability of elevator operation greatly.Elevator main control loop part of the present invention and time delay circuit, overvoltage crowbar are prior art partly, do not give unnecessary details at this.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only are casehistorys, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these embodiments.Therefore, protection scope of the present invention is limited by appended claims.
Claims (6)
1. elevator protection device; this device is electrically connected with the elevator main control loop by a relay; it is characterized in that; it comprises: one by the envelope core contactless coil loop under this relay control, and the open contact of this relay is connected in series the back by a governor outlet contactless coil and inserts this envelope core contactless coil loop with the open contact of this envelope core contactless switch.
2. elevator protection device as claimed in claim 1 is characterized in that, it also is electrically connected a time delay circuit at this relay and this envelope core contactless coil loop, and this time delay circuit is used for the time-delay behind the coil losing electricity.
3. elevator protection device as claimed in claim 2 is characterized in that, the delay time of this time delay circuit control is 2s～5s.
4. elevator protection device as claimed in claim 2 is characterized in that, also is electrically connected an overcurrent protection circuit between this relay and this envelope core contactless coil loop, and this overcurrent protection circuit is used for the protection of tamper seal core contactless switch.
5. elevator protection device as claimed in claim 1 is characterized in that, this elevator main control loop also comprises an armature winding circuit, and the normally closed contact of this envelope core contactless switch inserts this armature winding circuit, is used for this armature loop of short circuit.
6. elevator protection device as claimed in claim 5 is characterized in that, the open contact of this governor outlet contactless switch is electrically connected with the synchronous dynamo of this armature winding circuit, is used to control the output of this synchronous dynamo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010114409 CN101780911A (en) | 2010-02-26 | 2010-02-26 | Elevator protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010114409 CN101780911A (en) | 2010-02-26 | 2010-02-26 | Elevator protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101780911A true CN101780911A (en) | 2010-07-21 |
Family
ID=42521083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010114409 Pending CN101780911A (en) | 2010-02-26 | 2010-02-26 | Elevator protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101780911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611265A (en) * | 2011-12-09 | 2012-07-25 | 江南嘉捷电梯股份有限公司 | Bridging device applied to synchronous motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6475382A (en) * | 1987-09-14 | 1989-03-22 | Toshiba Corp | Controller for elevator |
| CN2210172Y (en) * | 1994-08-27 | 1995-10-18 | 黄文辉 | Safety monitoring and controlling device for construction lifting machine |
| CN201130850Y (en) * | 2007-12-11 | 2008-10-08 | 罗安全 | Multifunctional motor protector |
| CN201665454U (en) * | 2010-02-26 | 2010-12-08 | 上海新时达电气股份有限公司 | Elevator protector |
-
2010
- 2010-02-26 CN CN 201010114409 patent/CN101780911A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6475382A (en) * | 1987-09-14 | 1989-03-22 | Toshiba Corp | Controller for elevator |
| CN2210172Y (en) * | 1994-08-27 | 1995-10-18 | 黄文辉 | Safety monitoring and controlling device for construction lifting machine |
| CN201130850Y (en) * | 2007-12-11 | 2008-10-08 | 罗安全 | Multifunctional motor protector |
| CN201665454U (en) * | 2010-02-26 | 2010-12-08 | 上海新时达电气股份有限公司 | Elevator protector |
Non-Patent Citations (1)
| Title |
|---|
| 《机电元件》 20021231 宿云辉 直流电动机用延时、过流保护接触器的研制 第13-16页 2-4 , 第2期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611265A (en) * | 2011-12-09 | 2012-07-25 | 江南嘉捷电梯股份有限公司 | Bridging device applied to synchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100721 |