CN201665454U - Elevator protector - Google Patents

Elevator protector Download PDF

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Publication number
CN201665454U
CN201665454U CN2010201196223U CN201020119622U CN201665454U CN 201665454 U CN201665454 U CN 201665454U CN 2010201196223 U CN2010201196223 U CN 2010201196223U CN 201020119622 U CN201020119622 U CN 201020119622U CN 201665454 U CN201665454 U CN 201665454U
Authority
CN
China
Prior art keywords
elevator
loop
relay
circuit
protection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2010201196223U
Other languages
Chinese (zh)
Inventor
王荣
孙恩涛
江振洲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Step Electric Corp
Shanghai Step Electric Co Ltd
Original Assignee
Shanghai Step Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Step Electric Corp filed Critical Shanghai Step Electric Corp
Priority to CN2010201196223U priority Critical patent/CN201665454U/en
Application granted granted Critical
Publication of CN201665454U publication Critical patent/CN201665454U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses an elevator protector which is electrically connected with a main control loop of the elevator through a relay and comprises a coil loop of a contactor with sealed core controlled by the relay. The constant open contact point of the relay is connected in series with the constant open contact point of the contactor with sealed core through a coil out contactor coil of a speed controller and then connected to the coil loop of the contactor with sealed core. The elevator protector can effectively prevent the elevator from car slip and improve the safety of elevator operation.

Description

Elevator protection device
Technical field
The utility model relates to a kind of elevator protection device, particularly relates 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.
The utility model content
Technical problem to be solved in the utility model 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 utility model solves above-mentioned technical matters by following technical proposals: this device is electrically connected with the elevator main control loop by a relay, it is characterized in that, it also comprises an envelope core contactless coil loop, 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 utility model is: the utility model 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 the utility model one preferred embodiment.
Fig. 2 is the motor governor circuit figure of the utility model one preferred embodiment.
The specific embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
As depicted in figs. 1 and 2, the utility model provides a kind of elevator protection device, and 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 utility model 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 utility model 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 utility model 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 utility model, but those skilled in the art is to be understood that, these only are casehistorys, under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these embodiments.Therefore, protection domain of the present utility model 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 also comprises an envelope core contactless coil loop, 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.
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.
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.
CN2010201196223U 2010-02-26 2010-02-26 Elevator protector Expired - Lifetime CN201665454U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201196223U CN201665454U (en) 2010-02-26 2010-02-26 Elevator protector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201196223U CN201665454U (en) 2010-02-26 2010-02-26 Elevator protector

Publications (1)

Publication Number Publication Date
CN201665454U true CN201665454U (en) 2010-12-08

Family

ID=43266409

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201196223U Expired - Lifetime CN201665454U (en) 2010-02-26 2010-02-26 Elevator protector

Country Status (1)

Country Link
CN (1) CN201665454U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101780911A (en) * 2010-02-26 2010-07-21 上海新时达电气股份有限公司 Elevator protection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101780911A (en) * 2010-02-26 2010-07-21 上海新时达电气股份有限公司 Elevator protection device

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20101208