CN103446679B - A kind of steel ball, bar rib formula descending lifeline damping unit - Google Patents
A kind of steel ball, bar rib formula descending lifeline damping unit Download PDFInfo
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- CN103446679B CN103446679B CN201310429345.4A CN201310429345A CN103446679B CN 103446679 B CN103446679 B CN 103446679B CN 201310429345 A CN201310429345 A CN 201310429345A CN 103446679 B CN103446679 B CN 103446679B
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- bar rib
- blade
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 238000013016 damping Methods 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 239000010687 lubricating oil Substances 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims abstract description 3
- 230000009471 action Effects 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 abstract 1
- 239000007769 metal material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
nullA kind of steel ball、Bar rib formula descending lifeline damping unit，Including box body、Axis、Impeller、Steel ball，Wherein，Impeller and axis assembling and synchronous axial system，Impeller rotates in box body，The gear assembling of axis and cable drum or rope winding mechanism or its speed increasing mechanism concomitant rotation，It is characterized in that: in the space formed between each blade and inboard wall of cartridge of impeller, fill a number of steel ball and lubricating oil，Box body inner headed face、Side etc. is provided with several equally distributed bar ribs，Inhibition due to the centrifugal force of steel ball and each rib，Steel ball both rolled up and down in the blade pushing course rotated、Multi-direction vibration and mutually extruding，Move integrally forward again simultaneously，The frictional force suffered by the common centrifugal-block of resistance ratios suffered by impeller is big，Damping and reliability are very prominent，Not by water、The impact of wet goods lubricant medium，Ordinary metallic material can be used，Processing、Manufacturing cost is relatively low.
Description
Technical field
The present invention relates to a kind of high-altitude slow-descending equipment, be specifically related to a kind of steel ball, bar rib formula descending lifeline damping unit.
Background technology
The slow descending device of high-altitude lifesaving slow descender of the prior art or the use of other occasion, majority makes to produce between friction pair friction, the rotary speed of restriction rope winding mechanism by the centrifugal force of rotary part, reaches to delay and drops purpose.Because centrifugal force is directly proportional to linear velocity square, so if it is desired to obtain enough centrifugal force and frictional force, being necessary for enough rotating speeds, and high rotating speed is accomplished by the speed increasing mechanism of relatively big speed ratio.
Some descending lifelines utilize hydraulic damper, air damping device, and structure is complicated, and requirement on machining accuracy is high, and cost is also high.Some descending lifelines are because the intermolecular forces of critical piece is relatively big, pressure is big, stress is unreasonable, thus select high duty alloy material, and cost is high；Majority utilizes that the descending lifeline of frictional damping is all water funk, be afraid of oil, once have water, wet goods medium to enter, damping is greatly lowered, and even slow drops effect inefficacy；Some descending lifeline force analysis are not comprehensive, though having damping action in the circular motion at 360 degree of angles, have the accelerating function and side effect that do not give consideration yet, and integral damping effect is likely to have a greatly reduced quality, and lack test certification and test data support.The descending lifeline also having together falls with whereabouts person, speed controlling is realized by manual control, but as high-altitude escape slow descent device, can not everyone can at normal operating slow descending device under flurried, nervous, panic states, now can ensure that slow the dropping of safety is topmost and most basic design object, " fool " formula lifesaving appliance is likely to more practical.
Summary of the invention
It is an object of the invention to: a kind of steel ball, bar rib formula descending lifeline damping unit are provided, and realize following target:
1. adopting steel ball, bar rib formula damping mode, allow steel ball constantly by jack-up, rolling, extruding, damping action significantly improves, and stable, reliable.
2. selecting to be provided with the box body structure of strip fin, fill steel ball and lubricating oil between impeller and box body, population structure is simple, low cost of manufacture.
The present invention adopts the following technical scheme that
A kind of steel ball, bar rib formula descending lifeline damping unit, including box body, axis, impeller, steel ball, described impeller and axis assembling and synchronous axial system, impeller rotates in box body, the gear assembling of axis and cable drum or rope winding mechanism or its speed increasing mechanism concomitant rotation, technical measures is: load a number of steel ball and lubricating oil between each blade and box body of impeller, the inner headed face of box body is provided with bar rib, all steel balls were both constantly rolled up and down by jack-up in the blade pushing course rotated, multi-direction vibration and mutually extruding, entirety moves forward again, in addition the centrifugal force of steel ball, thus impeller is produced damping action.
Further, the side of box body and blade also can be provided with bar rib, jointly produce the damping action of impeller and the control action to axis rotating speed.Because damping action increases, it is adaptable to load capacity is big or more than 2 people uses the occasion of a descending lifeline simultaneously.
Further, diameter of the steel ball 4mm～12mm, too little damping action is inconspicuous, and impeller, box body, axis assembly precision require height.Very little, interaction force compares concentration to too big then steel ball quantity, when falling after rise after steel ball is by bar rib jack-up, owing to the centrifugal force of steel ball can make bar rib another side produce the side effect promoting steel ball to accelerate reach, affects damping again.
Further, the bar rib height on box body inner headed face, side and blade is 1st/1st to four/5th of diameter of the steel ball, and bar rib shape of cross section is the shapes such as circular arc, trapezoidal or triangle, and bar rib spacing is be more than or equal to diameter of the steel ball.Bar rib spacing is excessive, and damping can be greatly lowered.Two relative sides, one of them side is provided with bar rib, and another side correspondence position should become groove, otherwise can squeeze away too many steel ball and damping action is excessive, even causes weight or human body can not fall phenomenon.Bar rib height is more big, and damping action is also more big.
Further, the blade quantity of damping impeller selects 1～12, the forms of motion of steel ball can be made too much to simplify, affect damping.Blade quantity is more few, and damping action is more big.
Further, the steel ball quantity of loading is more many, and damping action is more big, but must not fill up, and otherwise impeller cannot rotate.Steel ball accounts for the space 50%～66% of damping cavity can meet needs.
Further, the gear ratio of speed increasing mechanism is more big, and wheel speed is more high, and steel ball centrifugal force is more big, and damping action is also more big.
Further, fill lubricating oil between steel ball, mainly prevent the serious corrosion of parts, the damping actions such as steel ball, box body, impeller from increasing and causing human body or weight not to fall.
Accompanying drawing explanation
Fig. 1: the front view of the assembling schematic diagram of the present invention；
Fig. 2: the partial side view of the assembling schematic diagram of the present invention；
In each figure: 1: box body, 2: axis, 3: impeller, 4: steel ball, 5: blade, 6: bar rib, 7: groove.
Detailed description of the invention
Below in conjunction with Fig. 1 and Fig. 2, a kind of steel ball that the present invention proposes, the concrete structure of bar rib formula descending lifeline damping unit and operation principle are described.
As it is shown in figure 1, the diameter of steel ball 4 selects 8mm, only box body 1 inner headed face is provided with equally distributed 18 bar rib ribs 6, and the height of bar rib 6 is 2mm, is shaped as semicircle, this circular arc place circle diameter 4mm.The quantity of the blade 5 of impeller 3 is 4, and and between box body 1, form 4 damping cavity, load 33～43 steel balls in each damping cavity, account for the 50%～66% of cavity volume.Box body 1 inwall axial dimension and width are 24.1mm～24.5mm, can hold 3 row's steel balls.The axis hole of impeller 3 assembles with key connected mode with axis 2.Impeller 3, in rotation process, when steel ball 4 runs into the bar rib 6 of the inner headed face of box body 1, namely moves to axis direction, and namely by jack-up, the centrifugal action of steel ball can hinder it to move；Also there is friction at the smooth position of steel ball and inboard wall of cartridge, also can form resistance, but value is relatively small.Steel ball overall operation trend is extruding backward, piles up, and the extruding of steel ball is as squeezed into chock, and between steel ball, mutual extruding force is maximum.Motive power causes all steel balls to roll up and down, multi-direction vibration, mutually extrude, and moves integrally forward again simultaneously.The above-mentioned various resistances from all directions, form enough damping actions.Rotating speed is more fast, and centrifugal force is more big, and damping action is also more strong, finally promotes damping impeller 3 uniform rotation.After box body 1 size is determined, the principal element affecting rotating speed namely decrease speed is loaded into the factors such as the smoothness of the quantity of steel ball, the height of bar rib, bar rib spacing and steel ball and contact surface thereof.Such scheme test data:
Speed increasing mechanism gear ratio is 1: 5, and loading steel ball quantity in each damping cavity is 33～43, and weight quality: 60～80 kilograms, impeller rotation is 8～13 turns per second, 0.35～0.56 meter per second of decrease speed；
As in figure 2 it is shown, except being provided with bar rib except box body 1 inner headed face, a side of box body 1 also is provided with bar rib, side, opposite is correspondingly provided with groove 7, and the both sides of each blade 5 are respectively arranged with 1 bar rib.The obstruction of the bar rib that steel ball can be subject on blade 5 when moving radially to axis direction, and extrude steel ball to circumferencial direction, suffered resistance is relatively large；Steel ball runs into the obstruction of box body side bar rib and can produce axially traversing, and the groove on opposite is dodged simultaneously, can be influenced by resistance during steel ball transverse reciprocating vibration.In this programme, the inwall side of box body 1, if bar rib is all designed in lateral symmetry position, too many steel ball can be squeezed away, resistance is excessive easily causes stuck phenomenon.This scheme only can adopt when carrying that weight is excessive or many people uses same descending lifeline simultaneously, and premise is must to design operation instructions in strict accordance with product export to use.
Obviously, above-described embodiment is only a citing, and is not the restriction to embodiments of the present invention.Apparent change that all genus technique scheme are extended out or variation are still in the row of protection scope of the present invention.
Claims (1)
- null1. a steel ball、Bar rib formula descending lifeline damping unit，Including box body、Axis、Impeller、Steel ball，Described impeller and axis assembling and synchronous axial system，Impeller rotates in box body，The gear assembling of axis and cable drum or rope winding mechanism or its speed increasing mechanism concomitant rotation，It is characterized in that: between each blade and box body of impeller, load a number of steel ball and lubricating oil，Diameter of the steel ball is 4mm～12mm，The blade quantity of impeller is 1～12，The inner headed face of box body、Side and blade are provided with equally distributed bar rib，Bar rib height is 1st/1st to four/5th of diameter of the steel ball，Bar rib shape of cross section is circular arc、Trapezoidal or triangle，Bar rib spacing is be more than or equal to diameter of the steel ball，When bar rib spacing is close to diameter of the steel ball，Box body inner headed face is ring gear shape，Box body side is sector gear shape，Blade side is rack shapes，When one of them side of box body arranges fin，Another side arranges the groove of correspondence，During wheel rotation，Both constantly by bar rib jack-up and extruding mutually in the blade pushing course that all of steel ball is rotated，Entirety moves forward again，Steel ball is also by centrifugal action simultaneously，Impeller is produced damping action by steel ball.
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| CN201310429345.4A CN103446679B (en) | 2013-09-09 | 2013-09-09 | A kind of steel ball, bar rib formula descending lifeline damping unit |
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| CN201310429345.4A CN103446679B (en) | 2013-09-09 | 2013-09-09 | A kind of steel ball, bar rib formula descending lifeline damping unit |
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| CN103446679A CN103446679A (en) | 2013-12-18 |
| CN103446679B true CN103446679B (en) | 2016-07-06 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104800982B (en) * | 2015-05-12 | 2017-08-25 | 上海海洋大学 | It is a kind of from speed-limited life line |
| CN107780062A (en) * | 2017-11-24 | 2018-03-09 | 陈志强 | Oil damping guide wheel, power reactor, micro- pulling force reactor and micro- pulling force sewing machine |
| CN109340027A (en) * | 2018-11-04 | 2019-02-15 | 山西省工业设备安装集团有限公司 | Water flow dynamic energy power generator in a kind of water pipe |
| CN109854661A (en) * | 2018-12-11 | 2019-06-07 | 珠海格力电器股份有限公司 | Absorbing box, compressor and marine cooling-water unit |
| CN116764128A (en) * | 2021-12-21 | 2023-09-19 | 北华大学 | Damping device of comb tooth pushing steel ball type descent control device |
| CN115531765B (en) * | 2021-12-21 | 2023-06-16 | 北华大学 | Steel ball collision type descent control device damping device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349585A (en) * | 2007-07-16 | 2009-01-21 | 邢念泽 | Steel belt type self-calibration weight dropper charge level indicator and measurement method thereof |
| CN101920073A (en) * | 2010-07-27 | 2010-12-22 | 福州大学 | Damping drum device and ball damping tall-building escape apparatus with same |
| CN202682587U (en) * | 2012-07-17 | 2013-01-23 | 张德芳 | Hydraulic damping type descending rescue device |
| CN202909329U (en) * | 2012-11-23 | 2013-05-01 | 李忠复 | Reciprocating type descending lifeline |
-
2013
- 2013-09-09 CN CN201310429345.4A patent/CN103446679B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349585A (en) * | 2007-07-16 | 2009-01-21 | 邢念泽 | Steel belt type self-calibration weight dropper charge level indicator and measurement method thereof |
| CN101920073A (en) * | 2010-07-27 | 2010-12-22 | 福州大学 | Damping drum device and ball damping tall-building escape apparatus with same |
| CN202682587U (en) * | 2012-07-17 | 2013-01-23 | 张德芳 | Hydraulic damping type descending rescue device |
| CN202909329U (en) * | 2012-11-23 | 2013-05-01 | 李忠复 | Reciprocating type descending lifeline |
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Address after: 210000 No. 19 Qingjiang South Road, Gulou District, Nanjing City, Jiangsu Province Patentee after: Li Xu Address before: 300 000 Wangyuanli Building 2 Gate 503, Shuishui East Road, Nankai District, Tianjin Patentee before: Li Xu |
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