CN103466406A - Relief device allowing two brakes in construction lift to loose and brake at the same time - Google Patents
Relief device allowing two brakes in construction lift to loose and brake at the same time Download PDFInfo
- Publication number
- CN103466406A CN103466406A CN2013103991213A CN201310399121A CN103466406A CN 103466406 A CN103466406 A CN 103466406A CN 2013103991213 A CN2013103991213 A CN 2013103991213A CN 201310399121 A CN201310399121 A CN 201310399121A CN 103466406 A CN103466406 A CN 103466406A
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- handle
- brake
- brakes
- pressing plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention relates to the field of the application, production, installation, maintenance and inspection of construction lifts, in particular to a relief device allowing two brakes in a construction lift to loose and brake at the same time. The relief device is characterized in that a four-link mechanism comprises a linkage composed of two lever mechanisms. The two lever mechanisms are characterized in that original short handle lever mechanisms of the two motor brakes are connected with two crow bars respectively so as to lengthen power arms to save efforts. A line of lever action spots of rear end covers of two motors serves as a first link; a second link and a fourth link are two lengthened crow bars; a third link is a master handle; the links are all connected in a hinged manner. Therefore, the two lever mechanisms and the linkage of the four-link mechanism are formed. When pull force is applied out from the master handle, the two crow bars rotate around fulcrums of respective lever mechanisms immediately, and the two brakes loose at the same time. When the master handle is released, the two brakes brake immediately.
Description
Affiliated technical field
The present invention relates to a kind of use for building hoist and overcome difficulties, also relate to manufacture, installation, maintenance and the check of building hoist.
Background technology
At present, along with the development of skyscraper, the building hoist usage quantity is more and more.Domestic building hoist mostly is the SC type, usually configures 2 or 3 drive motor, and each motor is provided with a drg.Therefore, it has 2 or 3 drg brakings usually.Yet, when fault is cut off the power supply, it declutches and moves down disposal device that cage overcomes difficulties is to adopt single drg operating mode that declutches, in advance the screw positive opening of other drg, and only depend on a drg braking, and existing braking unreliable, cage easily hits the potential safety hazard at the end.(annotating: declutch and brake and must hocket, to move down at a slow speed cage).And the brake-releasing gear that was equipped with is imperfection very in the past, it is shorter that the first wife singly brakes the brake-releasing gear handle, and the required power that declutches can not meet the requirement that should be not more than 400N of GB26557-2011 " cage has the dual-purpose building hoist of people's goods of vertically-guided " far away.Traditional single drg mode of overcoming difficulties that declutches, driver (female) generally dare not operate, and wait for specialized maintenance work stair climbing, then climb steel structure and come.If that the operation dual brake declutches is just more difficult, even the specialized maintenance work all is difficult to control.Potential safety hazard is well imagined.
The rated load of the dual-purpose construction elevator cage of most domestic SC type people's goods is 2T, label energy carrying 24 people of dispatching from the factory, and the dual-purpose building hoist declaration of an accident of SC type people goods is a lot of in recent years, as Wuhan death by accident 19 people, Changsha death by accident 18 people.In November, 2012, we once moved one of the camp site of this area check the dual-purpose building hoist of SC200/200 people's goods installed, in the check of carrying out the left side cage, by the test failure of overcoming difficulties that declutches of installation personnel operation.This cage has 3 drive motor, 3 drgs are arranged, installation personnel is overcome difficulties in the test operation process declutching, at first 2 drgs are declutched with screw in advance, make 2 drg adjusting bolts be threaded to the position of declutching, then release and the braking of other 1 drg of M/C, its braking failure, the left side cage flings and hits at the end from the test height of 1.5m, fortunately limitation in height, otherwise consequence is hardly imaginable.
When building hoist adopts 2 motors to drive, every power of motor is 15KW; While adopting 3 motors to drive, every power of motor is 11KW.The traditional approach that brake service is overcome difficulties that only declutches, to 2 motor-driven elevators, its braking force is only 1/2nd of design value; 3 motors are driven to elevator, and its braking force is only 1/3rd of design value, and safety factor is very low.
Summary of the invention
Purpose of the present invention: be security hidden trouble and the operating difficulties problem for the above-mentioned background technology, design a kind of for the simultaneously brisk disposal device that declutches and brake rapidly of two drgs of building hoist simultaneously, apply at home, with solution the overcome difficulties potential safety hazard of process and the difficulty of operation, the generation of prevention grave accident.And its required power that declutches, can meet the requirement of GB26557-2011.
The present invention is achieved in that four-bar linkage internal sleeve of design has the link gear of 2 leverages.Four-bar linkage wherein is: first connecting rod is electric motor stand (fulcrum of 2 leverages, is embodied on 2 rear side housings of two electrical motors, holds together with frame); The second and the 4th connecting rod (2 pivot links) is the ripping bar parts (connecting respectively a leverage, as power arm) of two lengthenings; Third connecting rod (intermediate connecting rod) is total handle (U-joint is installed at its two ends); Between each connecting rod, be hinged.2 leverages are on the basis of the short handle leverage of first wife of two electromotor brakes, connect respectively the ripping bar parts of two lengthening power arms, to lengthen its power arm.And the other end of the ripping bar parts of two spreadings, by U-joint separately, is articulated in respectively total handle two ends, make the above-mentioned link gear that forms on the whole two leverages and a four-bar linkage.
When at intermediate connecting rod (total handle) while applying pulling force outward, 2 pivot links (two lengthening the ripping bar parts) are immediately around the fulcrum rotation of leverage separately, and two leverages that lengthen in the ripping bar parts make two brisk declutching of drgs while.They are different declutch moment and the stroke that declutches, adjust automatically by the U-joint that is arranged on total handle two ends and the variation of ripping bar hinged joint position.When artificial, will always shake hands to discharge the time, the band-type brake spring of two drive motor drgs makes rapidly drg brake sticking brake separately simultaneously.(annotate: must cut off the electricity supply in advance before declutching, must put by a pine one while declutching operation, the cage discontinuous is moved downwards slowly.) (seeing accompanying drawing 1, Fig. 2, Fig. 3)
Advantage of the present invention:
1. this device has been broken the two difficulty that declutches, the single unsafe traditional difficult problems of overcoming difficulties that declutch of braking of braking of domestic SC type building hoist.Realized the secured fashion that the two brakings of SC type building hoist are declutched and overcome difficulties.
2. the lock torque of two drgs and the skimble-scamble gordian technique of stroke that declutches have been solved.
3. the required power that declutches is less, meets the GB26557-2011 requirement.This device pulling force<100N that declutches, solution has become the required pulling force of former brake-loosing mechanism and has been greater than the requirement that 400N can not meet GB26557-2011.
4. simple to operate efficient, safe and reliable.Through in-place test, female driver one people just can complete operation, satisfactory for result.Solution has become former brake-loosing mechanism must the specialized maintenance personnel could operate the present situation that declutches and overcome difficulties.
5. this brake-releasing gear can be used for each drg is carried out the periodic inspection of performance, has phenomenon just to make up the number while preventing a plurality of drg braking.For 3 motor-driven 3 drgs, can unclamp arbitrarily two with brake-releasing gear, check the damped condition of another one; For 2 motor-driven 2 drgs, can only pull an end of total handle with brake-releasing gear, check another damped condition.
6. popularizing application prospect is wide.The current domestic type of the SC in use building hoist year, increased numbers was in ten thousand in recent years, and skyscraper is more, and usage quantity is larger.
7. the formulation for standard provides the failure-free technical support.
The accompanying drawing explanation
Fig. 1 is brake-releasing gear (two drgs shake hands situation in the same way);
Fig. 2 is brake-releasing gear (two drgs shake hands parallel situation);
Fig. 3 is the simplification device (two drgs shake hands situation in the same way) that declutches;
Fig. 3 is the simplification device of Fig. 1, and brake-releasing gear is applied to the occasion (application scenario is maximum at present) that building hoist two brakings arrange in the same way.
Fig. 2 is the occasion (appearance of new research and development is arranged at present) that brake-releasing gear is applied to building hoist two brakings and be arranged in parallel.
In figure, 1 for drive motor, 2 for short handle, 3 for adjusting screw(rod), 4 for the nut that declutches, 5 for pressing plate, 6 for panel nut, 7 for the pressing plate bolt of rear end plate, 8 for the pressing plate retracing spring, 9 for ripping bar, 10 for hinge bolt, 11 for U-joint, 12 for bolt, 13 for total handle, 14 be drive motor.
To the occasion of 3 drgs, open a drg with screw in advance, then another 2 drgs are adopted to the operation of this brake-releasing gear.U-joint 11 can turn to fixing, in above-mentioned Fig. 3, and U-joint 11 half-twists, brake-releasing gear is Fig. 2 state, always shakes hands on 13 to have opened several groups of symmetrical holes more, can adjust the installation site of U-joint 11; For two longer situations of drg distance, two ripping bar extending devices (comprising former handle) can oppositely be installed, with size and the material that reduces main handle.The building hoist of having finalized the design is manufactured a product, and supporting this brake-releasing gear can be made to measure, to reduce some sizes, material and some move fixedly link, connection fittings etc.
The specific embodiment
The method of overcoming difficulties that declutches is: at first cut off the electricity supply, according to the positional distance between 2 drgs, by the symmetrical two ends of installing and always shaking hands of 2 U-joints, the other end of U-joint is connected with ripping bar.(annotate: three is motor-driven, first middle electromotor brake is screwed with the spanner nut 4 that will declutch, it is declutched in advance), then, 2 ripping bars 9 are inserted respectively to the end of short handle 2 of the original configuration of two drgs together with pressing plate 5 parts, by hand two pressing plates 5 are screwed respectively, check two groups of gaps that the nut 4 that declutches is roughly the same with short handle 2 maintenances, general about 5mm, then, will always shake hands 13 to do outward discontinuous and pull, must put by a pine one, now, the rear side housing of two drive motor is respectively the fulcrum of two ripping bars; Declutch nut 4 and adjusting screw(rod) 3 above it, up move to form respectively under the effect of two ripping bars 9 simultaneously and declutch, then move down again the formation band-type brake simultaneously, form two drgs and carry out alternative expression one pine one simultaneously and put, thereby realize that the discontinuous of cage moves down.Flat bed is put people and unloading nearby.
Claims (4)
1. two disposal devices that drg declutches simultaneously and brakes for building hoist.It is by original short handle leverage, comprise drive motor rear side housing (1), short handle (2), adjusting screw(rod) (3), the nut that declutches (4), with newly-designed parts, comprise that pressing plate (5), panel nut (6), pressing plate bolt of rear end plate (7), pressing plate retracing spring (8), ripping bar (9), hinge bolt (10), U-joint (11), bolt (12), total handle (13) form.It is characterized in that: the leverage of two spreading power arms and a link gear that newly-designed four-bar linkage forms.
2. disposal device according to claim 1, it is characterized in that: difference spreading power arm on original 2 leverages, be about to two ripping bars (9) and be inserted in respectively two short handles of first wife (2) power arm end together with pressing plate (5) parts, the panel nut (6) at pressing plate (5) two ends is locked on short handle (2) with pressing plate fix screw (7), makes short handle (2) and ripping bar (9) form the spreading power arm.And the other end of the ripping bar of two spreadings (9) parts, by U-joint separately, is articulated in respectively total handle two ends, make it to form the Coupled motion mechanism of two leverages and a four-bar linkage.
3. disposal device according to claim 1, is characterized in that when when total handle applies pulling force outward, and 2 ripping bar parts, immediately around the fulcrum rotation of leverage separately, declutch two drgs simultaneously.When total handle discharges, two drg brakings simultaneously immediately.
4. disposal device according to claim 1, modify or the part technical characterictic be equal to replacement the specific embodiment of this disposal device; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103991213A CN103466406A (en) | 2013-09-05 | 2013-09-05 | Relief device allowing two brakes in construction lift to loose and brake at the same time |
| CN201410268819.6A CN104418208A (en) | 2013-09-05 | 2014-06-17 | Difficulty-overcoming device for simultaneously releasing and braking two brakes of building hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103991213A CN103466406A (en) | 2013-09-05 | 2013-09-05 | Relief device allowing two brakes in construction lift to loose and brake at the same time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103466406A true CN103466406A (en) | 2013-12-25 |
Family
ID=49791498
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103991213A Pending CN103466406A (en) | 2013-09-05 | 2013-09-05 | Relief device allowing two brakes in construction lift to loose and brake at the same time |
| CN201410268819.6A Pending CN104418208A (en) | 2013-09-05 | 2014-06-17 | Difficulty-overcoming device for simultaneously releasing and braking two brakes of building hoist |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410268819.6A Pending CN104418208A (en) | 2013-09-05 | 2014-06-17 | Difficulty-overcoming device for simultaneously releasing and braking two brakes of building hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103466406A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104418208A (en) * | 2013-09-05 | 2015-03-18 | 广西壮族自治区特种设备监督检验院 | Difficulty-overcoming device for simultaneously releasing and braking two brakes of building hoist |
| CN110723615A (en) * | 2019-07-17 | 2020-01-24 | 南通中天精密仪器有限公司 | Brake releasing device of elevator brake |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106586757B (en) * | 2017-01-17 | 2019-01-29 | 广西壮族自治区特种设备检验研究院 | Building hoist disposal device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU587072A1 (en) * | 1976-08-27 | 1978-01-05 | Всесоюзный Конструкторско-Технологически Институт По Механизации Монтажных И Специальных Строительных Работ | Device for emergency braking of an elevator cab |
| CN2934165Y (en) * | 2006-01-20 | 2007-08-15 | 杭州富沃德电子电器有限公司 | Elevator emergency remote brake-releasing gear |
| JP2010042890A (en) * | 2008-08-11 | 2010-02-25 | Mitsubishi Electric Corp | Braking force setting device of elevator hoist |
| JP2010173776A (en) * | 2009-01-29 | 2010-08-12 | Mitsubishi Electric Corp | Damping force setting device of elevator hoist |
| CN201605072U (en) * | 2009-12-18 | 2010-10-13 | 宁波申菱电梯配件有限公司 | Manual brake release of disc brake |
| CN102358544B (en) * | 2011-08-30 | 2013-09-11 | 昆山通祐电梯有限公司 | Elevator self rescuer |
| CN202321860U (en) * | 2011-11-03 | 2012-07-11 | 四川省建元升降机制造有限公司 | Bidirectional anti-falling safety device for construction elevator |
| CN204057547U (en) * | 2013-09-05 | 2014-12-31 | 广西壮族自治区特种设备监督检验院 | For the disposal device that building hoist two drgs declutch and brake simultaneously |
| CN103466406A (en) * | 2013-09-05 | 2013-12-25 | 广西壮族自治区特种设备监督检验院 | Relief device allowing two brakes in construction lift to loose and brake at the same time |
-
2013
- 2013-09-05 CN CN2013103991213A patent/CN103466406A/en active Pending
-
2014
- 2014-06-17 CN CN201410268819.6A patent/CN104418208A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104418208A (en) * | 2013-09-05 | 2015-03-18 | 广西壮族自治区特种设备监督检验院 | Difficulty-overcoming device for simultaneously releasing and braking two brakes of building hoist |
| CN110723615A (en) * | 2019-07-17 | 2020-01-24 | 南通中天精密仪器有限公司 | Brake releasing device of elevator brake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104418208A (en) | 2015-03-18 |
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Application publication date: 20131225 |