CN105984776A - Direct fall preventing device for elevator - Google Patents
Direct fall preventing device for elevator Download PDFInfo
- Publication number
- CN105984776A CN105984776A CN201510052843.0A CN201510052843A CN105984776A CN 105984776 A CN105984776 A CN 105984776A CN 201510052843 A CN201510052843 A CN 201510052843A CN 105984776 A CN105984776 A CN 105984776A
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- China
- Prior art keywords
- elevator
- brake shoes
- car
- brake
- spring
- 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.)
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- Braking Arrangements (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
A direct fall preventing device for an elevator is characterized in that the direct fall preventing device is a safety measure using the principles of gravity, traction force and compression force to prevent the elevator from directly falling to the bottom story after the steel wire rope of the elevator is broken. The direct fall preventing device is low in manufacturing cost and applicable to elevators in service by slight modification.
Description
Technical field
The invention belongs to elevator technology.
Background technology
Current elevator is typically all and is controlled by motor, after motor shuts down, also can be locked, cause gliding, but, if pull rope fracture or locking device are malfunctioning, or maintenance error, it is possible to it is accidents caused, and retrieved by Baidu, also can find that elevator accident is much, owing to pull rope ruptures, elevator will the most directly may fall within the extremely short time, acceleration is more and more faster, when acceleration is near certain degree, will be uncontrollable, and general electric emergency system to there is also the regular hour poor, the most reliable.
Summary of the invention
Technical scheme, utilizes gravity, compression stress and pull strength jointly to realize, when elevator is properly functioning, there is pull strength in steel wire rope, and pull strength provides compression stress, brake portion cannot action, when, after the wire cable rupture of car top, pull strength has not existed, compression stress provides the work of powered brake portion, limit car and continue straight pendant, this device is mainly by traction element, brake portion, and triggering part forms.
nullDetailed description of the invention: brake shoes support is set on car by welding or other modes，Support to ensure when elevator is properly functioning，Brake shoes can not grazing car and hoistway parts，After typically requiring that brake shoes is placed，Bar and must be braked near hoistway side and have a small amount of angle，Hoistway arranges braking bar，Braking bar has the groove of similar washboard，After brake shoes is placed，Brake shoes support is generally located on the bottom of car，Brake shoes is wedge shape or triangle etc.，Require to use the material that coefficient of friction is higher to make，Brake shoes support also has spring and pulley，Pulley is usually fixed pulley，It is used for changing pull rope direction，Spring and brake shoes connect together，Pull rope connects the parts of compression spring，It is connected back to above the steel wire rope of car top board by pulley change side，Pull rope to have a certain distance with the steel wire rope bottom of car top，And need locking，In order to avoid occurring loosening，It is also noted that the installation direction of braking bar，After rope traction power disappears，The pull strength of pull rope is along with disappearance，Spring is upspring，By brake shoes jack-up，Form a chock type between car and braking bar blocks thing，Owing to braking bar has the groove of similar washboard，Under the action of gravity of car，Can block tighter and tighter，In order to strengthen braking effect，Loxosis can also be welded at suitable position, car bottom，Loxosis angle should be identical or close near the side of car with brake shoes，Loxosis area should equal to or more than the brake shoes contact area near car，So can increase the contact area of brake shoes and car，In addition，In order to prevent the elevator time of staying after the anoxia caused for a long time，Multiple apertures can be bored in the side of elevator or front-back，Covered by push-and-pull design，Whenever necessary，Push-pull device at fixed is pushed open，Typically do not advocate to hole in top and bottom，Operation is had any problem，Also foreign body it is easily accessible.
This scheme makes easily, for the elevator by rope traction dispatched from the factory, it is only necessary to just can apply through simple repacking.
Claims (4)
1. straight fall device prevented by an elevator, it is characterized in that: utilize gravity, compression stress and pull strength realize jointly, when elevator is properly functioning, there is pull strength in steel wire rope, pull strength provides compression stress, brake portion cannot action, when after the wire cable rupture of car top, pull strength has not existed, compression stress provides the work of powered brake portion, limit car and continue straight pendant, this device is mainly by traction element, brake portion, triggering part forms, in order to prevent anoxia, passage can be designed in elevator side or front-back, cover with push-and-pull design, can push open when needing, if hole is smaller or old elevator, can also directly bore aperture.
2. prevent straight fall device according to the elevator described in claim 1, described traction element is characterized in that: the more excellent scheme of traction element is the steel wire rope that pull rope connects car top, being connected with the parts of compression spring after changing direction by pulley, pull rope is preferably formed with a segment distance from the steel wire rope bottom of car top.
null3. prevent straight fall device according to the elevator described in claim 1，Described brake portion is characterized in that: the more excellent scheme of brake portion is that brake portion is by brake shoes，Braking bar，Brake shoes support forms，Brake shoes is made up of the material that coefficient of friction is higher，Wedge shaped or triangle，Braking bar is arranged on hoistway，Braking bar is preferably formed with the groove of similar washboard，Groove direction is should be noted during installation，Support to ensure when elevator is properly functioning，Brake shoes can not grazing car and hoistway parts，After typically requiring that brake shoes is placed，Bar and must be braked near hoistway side and have a small amount of angle，In order to reach optimum efficiency，Can be in cage bottom suitable position design braking loxosis，Loxosis angle should be identical or close near the side of car with brake shoes，Loxosis area should equal to or more than the brake shoes contact area near car，So can increase the contact area of brake shoes and car.
4. prevent straight fall device according to the elevator described in claim 1, described triggering part is characterized in that: the more excellent scheme of triggering part is that triggering part is by spring, spring-compressed parts form, spring is connected with brake shoes, spring-compressed parts are connected with pull rope, and the compression of spring causes the corresponding sports of brake shoes with upspringing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052843.0A CN105984776A (en) | 2015-02-03 | 2015-02-03 | Direct fall preventing device for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052843.0A CN105984776A (en) | 2015-02-03 | 2015-02-03 | Direct fall preventing device for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105984776A true CN105984776A (en) | 2016-10-05 |
Family
ID=57036833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510052843.0A Pending CN105984776A (en) | 2015-02-03 | 2015-02-03 | Direct fall preventing device for elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105984776A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3739654A1 (en) * | 1987-11-23 | 1989-06-01 | Freisl Paul Peter | Automatic brake device for cages |
| CN1420076A (en) * | 2001-11-21 | 2003-05-28 | 株式会社日立制作所 | Elevator emergency braking device |
| CN101318601A (en) * | 2008-07-03 | 2008-12-10 | 中国矿业大学 | Friction drive hoist cable brake and rope clamping device |
| CN202967819U (en) * | 2012-10-23 | 2013-06-05 | 孙谦 | Elevator |
| CN104030123A (en) * | 2014-06-23 | 2014-09-10 | 无锡市崇安区科技创业服务中心 | Lift fall protection device |
-
2015
- 2015-02-03 CN CN201510052843.0A patent/CN105984776A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3739654A1 (en) * | 1987-11-23 | 1989-06-01 | Freisl Paul Peter | Automatic brake device for cages |
| CN1420076A (en) * | 2001-11-21 | 2003-05-28 | 株式会社日立制作所 | Elevator emergency braking device |
| CN101318601A (en) * | 2008-07-03 | 2008-12-10 | 中国矿业大学 | Friction drive hoist cable brake and rope clamping device |
| CN202967819U (en) * | 2012-10-23 | 2013-06-05 | 孙谦 | Elevator |
| CN104030123A (en) * | 2014-06-23 | 2014-09-10 | 无锡市崇安区科技创业服务中心 | Lift fall protection device |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |
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| WD01 | Invention patent application deemed withdrawn after publication |