CN101710492A - Magnetic stop mechanism in portable lifting device - Google Patents
Magnetic stop mechanism in portable lifting device Download PDFInfo
- Publication number
- CN101710492A CN101710492A CN200910234577A CN200910234577A CN101710492A CN 101710492 A CN101710492 A CN 101710492A CN 200910234577 A CN200910234577 A CN 200910234577A CN 200910234577 A CN200910234577 A CN 200910234577A CN 101710492 A CN101710492 A CN 101710492A
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- CN
- China
- Prior art keywords
- ferromagnetism
- slide block
- stop mechanism
- lifting device
- magnetic
- 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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- 230000005307 ferromagnetism Effects 0.000 claims description 34
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The invention discloses a magnetic stop mechanism in a portable lifting device. The magnetic stop mechanism comprises a strongly magnetic sliding block group, a slideguide, a moving part with hangers and an adjusting roller, wherein a pair of strongly magnetic sliding blocks in the strongly magnetic sliding block group are separately absorbed on the two sides of the slideguide, the N poles and S poles of the pair of the strongly magnetic sliding blocks are arranged oppositely; the strongly magnetic sliding block group is embedded in the moving part with hangers; the slideguide is provided with a rack, the moving part with hangers is provided with a gear matched with the rack and a rotary handle used for rotating the gear; and the strongly magnetic sliding block is pushed by the moving part with hangers to move up and down along the slideguide. The magnetic stop mechanism of the invention utilizes magnetic adsorption to increase the viscous resistance between the moving part and the fixed part of the lifting device, thus realizing stable stop function without affecting free lifting and being applicable to instruments with accurate and light structure.
Description
Technical field
The present invention relates to a kind of stop mechanism, the magnetic stop mechanism in specifically a kind of portable lifting device.
Background technology
In some accurate light and handy jacking gears, need lifting freely, accurate positioning, and require stop reliable, avoid the displacement of gliding.Thermal source liftings in for example lifting of the lifting of microscope lens barrel, enlarger lens, the metal specific heat measurement device etc. all will be used jacking gear.
Under the effect of external force, the jacking gear middle gear drives load and moves up and down by the rolling on tooth bar.If do not have stop mechanism or stop mechanism can not produce the enough power antagonism loads and the gravity of movable member self, in case the external force of removing, under the effect of gravity, movable member and load that gear must drive in the jacking gear are glided along tooth bar.
In the present existing jacking gear, up-down mode is not quite similar, and adopts the comparatively reliable of rack-and-pinion lifting, adopts the mode lifting of friction rolling that skidding takes place sometimes, and is not too reliable.
Stop mechanism in these devices, the general mode that adopts has: pawl locking, intensified pressure increase friction, the locking of spring roof pressure, utilize helical teeth to increase viscosity resistance etc.These means of retention respectively have relative merits, are summarized as follows:
Pawl locking, lock more reliable, but generally be used for monodirectional locking, bother relatively as if changing direction of displacement.
The method that adopts general intensified pressure to increase friction force locks, and method is simple, but lifting sometimes is not too freely, or the displacement phenomenon of skidding, not too reliable.
Adopt the locking of spring roof pressure, the displacement phenomenon of skidding sometimes, bearing accuracy is slightly poor.
Utilize twill gear viscosity resistance,, be difficult to locking sometimes for slightly heavy object.
Summary of the invention
In order to overcome the problem that stop mechanism exists in the existing jacking gear, the purpose of this invention is to provide the magnetic stop mechanism in a kind of portable lifting device, this stop mechanism utilizes the viscosity resistance between magnetic absorption increase jacking gear movable member and fixed part, both can realize reliable locking function, do not influence lifting freely again, be suitable for making up accurate light and handy instrument.
The objective of the invention is to be achieved through the following technical solutions:
Magnetic stop mechanism in a kind of portable lifting device, it is characterized in that: this magnetic stop mechanism comprises the movable part of ferromagnetism slide block group, rail plate, band hangers and regulates roller, a pair of ferromagnetism slide block in the described ferromagnetism slide block group is adsorbed on the both sides of rail plate, and this N to the ferromagnetism slide block, the S utmost point are oppositely arranged; Ferromagnetism slide block group is embedded in the movable part of band hangers; On rail plate, be provided with tooth bar, on the movable part of band hangers, be provided with the gear suitable, and be used for the rotary handle of transmitting gear with tooth bar; Ferromagnetism slide block group moves up and down at the movable part promotion lower edge of band hangers rail plate.
The present invention is provided with the adjusting roller that is used to improve the wheel and rack engagement on the movable part of band hangers.Ferromagnetism slide block group can be two ferromagnetism slide blocks or polylith ferromagnetism slide block.
Rail plate is made by ferrous material among the present invention.The ferromagnetism slide block in the ferromagnetism slide block group and the surface of contact of rail plate are plane or the corrugated for agreeing with mutually, utilize the ripple step to bear part gravity, thereby further increase viscosity resistance.
The present invention is at the additional ferromagnetism slide block of two opposite side of riser guide, and the magnetic force that produces between strong magnetic slider and guide rail is adsorbed on the guide rail magnetic slider.Under the rotary handle effect, when movable member moved up and down, movable member promoted magnetic slider moving on guide rail by hangers.If the viscosity resistance that the magnetic force between magnetic slider and guide rail produces is enough big, balancing gravity just can stop the movable member in the jacking gear to glide effectively, realizes the magnetic locking function.
Among the present invention, utilize the magnetic force between ferromagnetism slide block and guide rail, make magnetic patch be adjacent to guide rail surface, increase the friction force between them; If surface of contact is designed to corrugated, also can utilize the part gravity of bearing load and movable part self when wavy lines agrees with mutually between magnetic patch and guide rail.By the adhesive attraction between movable part and fixed part in the enhancing jacking gear, resist the downslide phenomenon that gravity causes, play stopping function.
Compared with prior art, the present invention utilizes the viscosity resistance between magnetic absorption increase jacking gear movable member and fixed part, both can realize reliable locking function, does not influence lifting freely again, is suitable for making up accurate light and handy instrument.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the movable part connection diagram of ferromagnetism slide block group, rail plate and band hangers among the present invention.
Embodiment
Magnetic stop mechanism in a kind of portable lifting device of the present invention is seen Fig. 1 and Fig. 2, and this magnetic stop mechanism comprises the movable part 3 of ferromagnetism slide block group 1, rail plate 2, band hangers and regulates roller 4.Ferromagnetism slide block group 1 is two ferromagnetism slide blocks, and this N to the ferromagnetism slide block, the S utmost point are relative every rail plate 2, and is adsorbed on the both sides of rail plate 2.Ferromagnetism slide block 1 is embedded in the movable part 3 of band hangers, is provided with spring 7 between ferromagnetism slide block 1 and hangers 6, keeps suitable activity surplus; On the movable part 3 of band hangers, be provided with the gear 31 suitable, and be used for the rotary handle 32 of transmitting gear 31 with tooth bar 21.Load 5 is connected with the movable part 3 of band hangers.The movable part of band hangers promotes magnetic slider by hangers 6 and moves up and down along rail plate 2.Rail plate 2 adopts ferrous material, and generally speaking, the surface of contact of magnetic slider and rail plate is the plane, and in order to increase viscosity resistance, rail plate 2 is processed into corrugated with the magnetic slider surface of contact, agrees with mutually.Except utilizing magnetic absorption to increase the friction force, utilize the step of ripple to bear part gravity, can more effectively play stopping effect.The rear portion of movable part is provided with regulates roller 4, regulates the engagement of the tooth bar 21 on gear 31 and the rail plate 2 of movable part 3 that roller 4 is used for improving the band hangers.The gear 31 that turning handle 32 can drive in the movable part rolls on rail plate 2 tooth bars 21, thereby drives load 5 liftings and ferromagnetism slide block moving on rail plate 2.
Apply external force by turning handle 32, the hangers 6 in the movable part 3 of band hangers promotes ferromagnetism slide block 1 and moves up and down along rail plate 2.After removing external force, the viscosity resistance that magnetic absorption produces stops and glides.
The present invention utilizes the viscosity resistance between magnetic absorption increase jacking gear movable member and fixed part, both can realize reliable locking function, does not influence lifting freely again, is suitable for making up accurate light and handy instrument.
Claims (6)
1. the magnetic stop mechanism in the portable lifting device, it is characterized in that: this magnetic stop mechanism comprises the movable part (3) of ferromagnetism slide block group (1), rail plate (2), band hangers and regulates roller (4), a pair of ferromagnetism slide block in the described ferromagnetism slide block group (1) is adsorbed on the both sides of rail plate (2), and this N to the ferromagnetism slide block, the S utmost point are oppositely arranged; Ferromagnetism slide block group (1) is embedded in the movable part (3) of band hangers; On rail plate (2), be provided with tooth bar (21), on the movable part (3) of band hangers, be provided with and the suitable gear (31) of tooth bar (21), and be used for the rotary handle (32) of transmitting gear (31); Ferromagnetism slide block group (1) moves up and down at movable part (3) the promotion lower edge rail plate (2) of band hangers.
2. the magnetic stop mechanism in the portable lifting device according to claim 1 is characterized in that: be provided with the adjusting roller (4) that is used to improve gear (31) and tooth bar (21) engagement on the movable part (3) of band hangers.
3. the magnetic stop mechanism in the portable lifting device according to claim 1 is characterized in that: rail plate (2) is made by ferrous material.
4. the magnetic stop mechanism in the portable lifting device according to claim 1 is characterized in that: the surface of contact of ferromagnetism slide block in the ferromagnetism slide block group (1) and rail plate (2) is the plane.
5. the magnetic stop mechanism in the portable lifting device according to claim 1 is characterized in that: the corrugated of the surface of contact of ferromagnetism slide block in the ferromagnetism slide block group (1) and rail plate (2) for agreeing with mutually.
6. the magnetic stop mechanism in the portable lifting device according to claim 1 is characterized in that: ferromagnetism slide block group (1) is two ferromagnetism slide blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102345778A CN101710492B (en) | 2009-11-23 | 2009-11-23 | Magnetic stop mechanism in portable lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102345778A CN101710492B (en) | 2009-11-23 | 2009-11-23 | Magnetic stop mechanism in portable lifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101710492A true CN101710492A (en) | 2010-05-19 |
| CN101710492B CN101710492B (en) | 2012-05-23 |
Family
ID=42403274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102345778A Expired - Fee Related CN101710492B (en) | 2009-11-23 | 2009-11-23 | Magnetic stop mechanism in portable lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101710492B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565218A (en) * | 2016-02-02 | 2016-05-11 | 珠海及力高空作业设备有限公司 | Electromagnetic locking structure oriented to mast type operation platform |
| CN106184488A (en) * | 2016-07-27 | 2016-12-07 | 陈春红 | A kind of supporting structure of sulky vehicle easily |
| CN106218755A (en) * | 2016-07-27 | 2016-12-14 | 金华市四维空间汽车用品有限公司 | A kind of New-support device of cart |
| CN106240678A (en) * | 2016-07-27 | 2016-12-21 | 金华市四维空间汽车用品有限公司 | The holder device that a kind of cart is parked |
| CN106240677A (en) * | 2016-07-27 | 2016-12-21 | 金华市四维空间汽车用品有限公司 | A kind of holder device for cart |
| CN108555075A (en) * | 2018-01-31 | 2018-09-21 | 湖北环电磁装备工程技术有限公司 | A kind of numerical control bender that no frame permanent magnet synchronous motor directly drives |
| CN111749538A (en) * | 2020-07-16 | 2020-10-09 | 干建飞 | Building construction safety encloses fender |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2527707A1 (en) * | 1982-05-27 | 1983-12-02 | Villejuif Etudes Indles | Relative locking device for two coaxial units of measuring probe - positions and centre elements with magnetic locking devices |
| CN2275595Y (en) * | 1996-10-04 | 1998-03-04 | 贺国平 | Electric lifter for wind-proof lifting clothes airer |
| CN2573642Y (en) * | 2002-07-16 | 2003-09-17 | 江露晖 | Energy-saving sealed dimmer |
| WO2005098109A1 (en) * | 2004-04-07 | 2005-10-20 | Rohit Verma | Electromagnetic weaving machine |
| CN2849108Y (en) * | 2005-11-04 | 2006-12-20 | 清远大中塑胶制品有限公司 | Composite magnetic attraction control device of double layer glass and shutter window curtain |
| CN2837486Y (en) * | 2005-12-08 | 2006-11-15 | 董士聪 | Disc spring type roller shutter door lifter |
-
2009
- 2009-11-23 CN CN2009102345778A patent/CN101710492B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565218A (en) * | 2016-02-02 | 2016-05-11 | 珠海及力高空作业设备有限公司 | Electromagnetic locking structure oriented to mast type operation platform |
| CN106184488A (en) * | 2016-07-27 | 2016-12-07 | 陈春红 | A kind of supporting structure of sulky vehicle easily |
| CN106218755A (en) * | 2016-07-27 | 2016-12-14 | 金华市四维空间汽车用品有限公司 | A kind of New-support device of cart |
| CN106240678A (en) * | 2016-07-27 | 2016-12-21 | 金华市四维空间汽车用品有限公司 | The holder device that a kind of cart is parked |
| CN106240677A (en) * | 2016-07-27 | 2016-12-21 | 金华市四维空间汽车用品有限公司 | A kind of holder device for cart |
| CN108555075A (en) * | 2018-01-31 | 2018-09-21 | 湖北环电磁装备工程技术有限公司 | A kind of numerical control bender that no frame permanent magnet synchronous motor directly drives |
| CN111749538A (en) * | 2020-07-16 | 2020-10-09 | 干建飞 | Building construction safety encloses fender |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101710492B (en) | 2012-05-23 |
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Granted publication date: 20120523 Termination date: 20121123 |