CN109157772A - It hits and friction type descent control device damping unit - Google Patents
It hits and friction type descent control device damping unit Download PDFInfo
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- CN109157772A CN109157772A CN201811293670.1A CN201811293670A CN109157772A CN 109157772 A CN109157772 A CN 109157772A CN 201811293670 A CN201811293670 A CN 201811293670A CN 109157772 A CN109157772 A CN 109157772A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
- A62B1/10—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys mechanically operated
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Abstract
It is a kind of to hit with friction type descent control device damping unit, it is related to high-altitude lifesaving slow descender field, mainly realizes at the uniform velocity to delay using special shock damping mode and drop, and solves the problems, such as that brinelling influences slow drop effect.In structure, rope sheave and ring gear fixing assembling rotate synchronously, ring gear drives 4 pinion gears along the gear shaft high speed rotation being fixed on box body again, the sliding slot fixing assembling of pinion gear and a channel steel shape, sliding slot respectively drive a pair of of centrifugal-block high speed rotation again, and centrifugal-block can move back and forth in sliding slot, by centrifugal force, it mutually hits, rub between centrifugal-block in different sliding slots, also generated between each centrifugal-block and inboard wall of cartridge and hit, rub, and then reach at the uniform velocity slow drop purpose.Because to hit based on damping, and the abrasion that centrifugal-block, inboard wall of cartridge generate will not influence damping, therefore the device is not afraid of water, not be afraid of oil, and performance is stable, long service life, and compact-sized, small in size, low cost.
Description
Technical field
The present invention relates to a kind of high-altitude lifesaving descent control devices, and in particular to a kind of hit fills with friction type descent control device damping
It sets.
Background technique
High-altitude lifesaving descent control device in the prior art, majority mainly consist of three parts, i.e. rope winding mechanism, speedup
Mechanism (gear set) and damping unit.Damping unit majority is frictional, is mainly by high-speed rotary part (centrifugation in structure
Body) and fixing piece (such as inner headed face of box body) composition friction pair, made by the centrifugal force of high-speed rotary part (centrifugation body)
Friction is generated between friction pair, limits the rotation speed of rope winding mechanism, reaches at the uniform velocity slow drop purpose.This frictional damping
Device is primarily present problem: afraid of water, fearness oil, i.e., once having between the media engaging friction pair such as water, oil, sharply because of coefficient of friction
Decline, damping is greatly lowered or even the effect failure of slow drop.Because the coefficient of friction between two kinds of ordinary metallic materials is general
All very littles, thus the centrifugation body of some descending lifelines with box body contact portion using the materials such as rubber, but worn after frictional heat generation non-
Chang Yanchong.
In order to the friction for overcoming the media such as water, oil to enter descending lifeline is secondary and the drawbacks of seriously affect damping, a kind of " steel
Pearl, rib formula descending lifeline damping unit " (patent No. ZL201310429345.4) and a kind of " two-way change rail descending lifeline damping dress
Set " (patent No. ZL201310505232.8) two patents of invention efficiently solve the problems, such as this respect, but there are problems to be
Abrasion is than more serious.In fact, this two inventive techniques, why it is not afraid of oily, not afraid of water, is because of damping action main source
The continuous shock not stopped and non-model control between operation component and fixing piece.Wherein:
Steel ball, rib formula descending lifeline damping unit, by running steel ball (centrifugation body) and fixed box body inner headed face
On rib generate the at the uniform velocity rotation for hitting and realizing rope winding mechanism.Because the height of rib is smaller (by diameter of the steel ball
Limitation, the too high steel ball card that will cause of rib stubbornly refuses to move, therefore rib height is diameter of the steel ball 1/5th to a quarter), item
Rib deforms after being knocked, becomes short, long-term or be used for multiple times and will be greatly reduced slow drop effect；
There are mainly two types of structure types for two-way change rail descending lifeline damping unit, the first is by running centrifugation body and to consolidate
Fixed motionless S-shaped becomes the interior side slideway of rail slideway, the protrusion of outboard runner generates and hits and realize rope winding mechanism at the uniform velocity
Rotation, contact area is larger when because hitting, projected angle of impact is smaller, therefore the abrasion generated is relatively light, but to the processing of each component,
Assembly precision is more demanding, and centrifugation body needs larger quality, and the diameter of S-shaped slideway can not be too small, and overall dimensions are larger, cost
Also higher；Be for second an only setting outboard runner, assemble 4 cylindrical centrifugation bodies altogether, the centrifugation body of every two cylinder it
Between be equipped with a push rod, two push rods are overlapped in right-angled intersection, and damping is better than the first, but structure is complicated, and push rod is worn
It is larger, height is required to the processing of each component, assembly precision, cost is also high.
It in foregoing invention patent, hits and occurs between centrifugation body and fixing piece, wherein the shock of centrifugation body itself
Deformation is easy to compensate, and influences on damping smaller.On the contrary, the collision deformation of fixing piece is just not easy to compensate, and right
The influence of damping is very big.
" a kind of descending lifeline damping unit of metallic particles medium " (patent No. ZL201310656418.3), is not deposited substantially
In brinelling, but speed increasing mechanism gear set, counter gear group is more complicated, component is more, at high cost, is made using a large amount of steel ball
For granule medium, quality is big, cost is also high.
Summary of the invention
To overcome deficiency existing for descending lifeline in the prior art, the present invention provides a kind of hit and hinders with friction type descent control device
Buddhist nun's device, the device play damping action using two kinds of damping modes of shock and friction jointly, and based on shock damping, wherein
Shock damping again include two kinds of forms, mutually hit between (centrifugation body) first is that high-speed rotary part, second is that high speed rotation portion
It is mutually hit between part (centrifugation body) and box body inner headed face.The device is not only between the media such as water, oil engaging friction pair, Bu Huiying
Damping is rung, and hit the abrasion generated to influence damping.
The present invention adopts the following technical scheme:
It is a kind of to hit and friction type descent control device damping unit, including box body, hanging scroll, central axis, rope sheave, ring gear, wherein box body
The cavity being mainly made of bottom cover, buckle closure and box body ring, hanging scroll are installed between bottom cover and buckle closure and are located at top, center
The both ends of axis are assembled with bottom cover centre bore, buckle closure centre bore respectively, are equipped with annular groove on bottom cover, buckle closure, and with bottom cover center
Hole, buckle closure centre bore are concentric, and the both ends of box body ring are respectively embedded into annular groove, i.e. box body ring and the central axis heart, rope sheave
In box body, the centre bore of rope sheave and central axis activity are assembled, it is characterized in that: ring gear is side tubular with the end or bottle cap
Shape, the side of ring gear are equipped with ring gear centre bore and ring gear mounting hole, and rope sheave side is equipped with rope sheave screw hole, and ring gear is logical
Cross sunk screw, ring gear mounting hole, rope sheave screw hole and rope sheave fixing assembling, meanwhile, ring gear by ring gear centre bore with
Central axis activity assembly, i.e., ring gear, rope sheave can rotate synchronously, and identical 4 gear shafts, 4 small are additionally provided in box body
Gear, 4 sliding slots and 8 centrifugal-blocks, bottom cover are equipped with equally distributed 4 gear shaft mounting holes, and 4 gear shaft right ends are worn
It crosses after gear shaft mounting hole enters box body, left end and bottom cover fixing assembling, pinion gear is spur gear wheel, which is provided with gear
Centre bore and 2 symmetrical gear screw holes, sliding slot are channel steel shape, and the center line of each sliding slot is equipped with sliding slot centre bore and 2
A symmetrical sliding slot mounting hole passes through sunk screw, sliding slot mounting hole, the fixed dress of gear screw hole between each sliding slot and pinion gear
Match, the two recycles sliding slot centre bore, gear center hole and gear shaft activity assembly, rotates synchronously, and one end of centrifugal-block is half
A cylindrical shape, curved end are centrifugal-block arc end, and the cauda of the other end of centrifugal-block is writing board shape, and cauda is equipped with
The cauda of slotted hole, every two centrifugal-block is overlapped, and constitutes a pair of of centrifugal-block, and living with gear shaft simultaneously by slotted hole
Dynamic assembly, two centrifugal-blocks are also located in a sliding slot simultaneously, and can back and forth slide in sliding slot, 4 pinion gears simultaneously with it is interior
Gear ring engagement, and keep 4 sliding slots equidirectional in assembly, when the rotation of rope belt running rope wheel, rope sheave drives ring gear to turn
Dynamic, ring gear drives 4 pinion gears to rotate synchronously again, and pinion gear drives sliding slot to rotate again, and each sliding slot pushes a pair therein again
Centrifugal-block rotation, in its rotation process, is all without contact between each sliding slot, between sliding slot and the inner headed face of box body ring, but due to
The effect of centrifugal force, each centrifugal-block are displaced outwardly, when centrifugal-block is displaced outwardly it is without hindrance when, centrifugal-block until cauda length
One end of circular hole contacts with gear shaft and stops outer shifting, the centrifugation when sliding slot turns to a certain angle, in two adjacent groups sliding slot
The centrifugal-block arc end of block contacts with each other, and generates and hits and rub, and mutually plays the role of that sliding slot is hindered to continue rotation, simultaneously
Two centrifugal-blocks do retraction operation, and after sliding slot is rotated further by certain angle, the inner circle face contact of centrifugal-block arc end and box body ring is simultaneously
It generates and hits and rub, and rotation is continued to sliding slot and plays inhibition, while the centrifugal-block also being made to do retraction operation, it is all
It hits and friction finally makes rope sheave uniform rotation, human body or weight at the uniform velocity fall.
Because sunk screw is also possible to loosen, corresponding screw hole is become into through-hole, sunk screw is changed to rivet, rope sheave
Fixing assembling mode between ring gear, between sliding slot and pinion gear can also be changed to riveting method.
The length of the slotted hole of cauda must be appropriate, just can guarantee can generate adequately hit and friction, moreover it is possible to make from
Heart block is easy to bounce back.The length of slotted hole is excessive, can make two centrifugal-blocks mutually it is stuck, cannot bounce back, descending lifeline cannot be run；It is long
The length of circular hole is too small, and shock and friction cannot play due damping action.
Theoretically, only pulling function by centripetal force when centrifugal-block uniform rotation, only contacted between centrifugal-block and sliding slot,
Without thrust.Although centrifugal-block is not the rigid body in absolute sense, the shock (namely collision) between two centrifugal-blocks accords with first
Close the conservation of momentum.As long as the ability that metal material used resists plastic deformation is stronger, conservation of mechanical energy (i.e. thermal energy is substantially conformed to
Loss is few), so, it should be with former speed, reverse direction operation after theoretically the centrifugal-block of two homogenous quantities is hit, then centrifugal-block is again
It is hit with sliding slot, continues to rotate with the speed slowed down again later, two groups of sliding slots and centrifugal-block are hit jointly again, then generate opposite direction
Momentum.In contrast, impact force is usually all huge, momentum (while having kinetic energy) most end form of this moment opposite direction
The reversed moment of resistance is formed at the flexible deformation of component, and to the rotation in former direction, that is, realizes required damping action.Similarly, box
The inner headed face of body ring also will form the reversed moment of resistance to sliding slot to the reaction force of centrifugal-block.
The shock and friction generated between two centrifugal-blocks, between centrifugal-block and the inner headed face of box body ring can also make to be centrifuged
Block arc end generates certain abrasion or deformation (being plastically deformed), but because the area of centrifugal-block arc end is larger, abrasion or change
The amplitude of shape is very light, and with respect to the overall dimensions very little of itself, therefore on damping without influence or substantially without influence.
Particularly, when 4 pinion gears engage assembly with ring gear simultaneously, it is necessary to keep 4 sliding slots equidirectional, can just make adjacent
Two sliding slots in centrifugal-block between generate it is effective mutually hit and friction, otherwise can seriously affect damping.
Further, be convenient for guaranteeing all equidirectional assembly of sliding slot, select ring gear, pinion gear the number of teeth when should press
State regular determination:
1. the number of teeth of the number of teeth of ring gear, 4 pinion gears is 4 integral multiple, when sliding slot and pinion gear assembly, should make to own
Sliding slot center line be aligned pinion gear tooth top center or be aligned tooth root center；
2. the number of teeth of the number of teeth of ring gear, 4 pinion gears select even number and not simultaneously for 4 integral multiple or ring gear
Number of teeth selection even number but be not that 4 integral multiple, the number of teeth selection odd number of 4 pinion gears are answered when sliding slot and pinion gear are assembled
The center line of 2 sliding slots therein is set to be directed at a tooth top center of pinion gear, the center line of another 2 sliding slots should be directed at pinion gear
A tooth root center；
3. the number of teeth of the integral multiple of the number of teeth selection 4 of ring gear, 4 pinion gears selects odd number, when sliding slot and pinion gear assembly,
It should make the tooth top center of the center line alignment pinion gear of wherein 2 sliding slots, the center line of another 2 sliding slots should pass through tooth top with some
The diameter line at center is vertical；
Certainly, the direction of the center line of sliding slot is complete by the direction for determining the line of centres of the gear screw hole in pinion gear
At.
Further, after increasing the overall dimension of descending lifeline, increasing the quality of centrifugal-block, a descending lifeline only assembles 2
Pinion gear, 2 sliding slots and two pairs of centrifugal-blocks, are also able to achieve same descending speed and effect.
In the present solution, hitting is main damping mode, friction is with generation is hit, although can also generate certain
Damping action, but be not main, therefore lubricating oil can be filled between all parts, mainly prevent metal parts serious
Corrosion influences the using effect and service life of descending lifeline.
Difference of this programme in structure with common descending lifeline is:
Frictional damping becomes hitting damping；Centrifugation body and fixing piece shock, which become being centrifuged between body, hits；Ring gear is by fixing piece
Become rotating member；Planetary gear becomes the ordinary gear rotated along fixing axle；Multiple centrifugation bodies are driven simultaneously by a rotating member
Become multiple rotating members respectively to drive；Multi-stage acceleration becomes single-stage speedup.
The beneficial effects of the present invention are: hit occur between two centrifugal-blocks and the inner headed face of centrifugal-block and box body ring it
Between, it wears or deforms on the overall damping of descending lifeline without influence, can be realized long-time service；Device is not afraid of water, is not afraid of oil,
Lubricating oil is added in a device simultaneously, can also prevent metal parts from corroding while not influencing damping；Apparatus of the present invention,
It is compact-sized, small in size, low cost.
Below with reference to Fig. 1 to Figure 20, the present invention is further described.
Detailed description of the invention
Fig. 1: descending lifeline damping unit overall structure diagram；
Fig. 2: rope sheave main view；
Fig. 3: Fig. 2 left view；
Fig. 4: ring gear main view；
Fig. 5: Fig. 4 left view；
Fig. 6: pinion gear main view；
Fig. 7: Fig. 6 left view；
Fig. 8: sliding slot main view；
Fig. 9: Fig. 8 top view；
Figure 10: Fig. 8 left view；
Figure 11: centrifugal-block main view；
Figure 12: Figure 11 top view；
Figure 13: a pair of of centrifugal-block assembly relation schematic diagram；
Figure 14: bottom cover main view；
Figure 15: Figure 14 left view；
Figure 16: gear shaft schematic diagram；
Figure 17: centrifugal-block operating status schematic diagram (one)；
Figure 18: centrifugal-block operating status schematic diagram (two)；
Figure 19: centrifugal-block operating status schematic diagram (three)；
Figure 20: centrifugal-block operating status schematic diagram (four).
In each figure: 1: box body, 2: bottom cover, 3: annular groove, 4: buckle closure, 5: box body ring, 6: central axis, 7: rope sheave, 8: rope sheave
Screw hole, 9: ring gear, 10: ring gear centre bore, 11: ring gear mounting hole, 12: pinion gear, 13: gear center hole, 14: gear
Screw hole, 15: gear shaft, 16: sliding slot, 17: sliding slot centre bore, 18: sliding slot mounting hole, 19: centrifugal-block, 20: centrifugal-block arc end,
21: cauda, 22: slotted hole, 23: hanging scroll, 24: bottom cover centre bore, 25: gear shaft mounting hole, 26: guide and limit wheel.
Specific embodiment
Fig. 1 is that a kind of shock provided by the invention is whole with friction type descent control device damping unit (hereinafter referred to as damping unit)
Body structural schematic diagram.The damping unit include bottom cover 2, buckle closure 4, box body ring 5, hanging scroll 23, central axis 6, rope sheave 7, ring gear 9,
Pinion gear 12, gear shaft 15, sliding slot 16, centrifugal-block 19, guide and limit wheel 26.Hanging scroll 23 is installed between bottom cover and buckle closure and position
In top.
As shown in Figure 14,15 and 16, bottom cover 2 is equipped with annular groove 3, bottom cover centre bore 24 and equally distributed 4 gears
Shaft mounting hole 25, annular groove 3 and bottom cover centre bore 24 are concentric.The inside of buckle closure 4 also is provided with same annular groove.Box body ring 5
Both ends respectively with the annular groove 3 of bottom cover 2, buckle closure 4 assemble.One end of central axis 6 and bottom cover centre bore 24 assemble, central axis 6
The other end and buckle closure 4 centre bore assemble.After gear shaft 15 passes through gear shaft mounting hole 25, the left end of gear shaft 15 and bottom cover
2 are welded and fixed.
As shown in Figure 2,3, the side of rope sheave 7 is equipped with equally distributed rope sheave screw hole 8, and the center of rope sheave 7 is equipped with centre bore.
As shown in Figure 4,5, ring gear 9 is side tubular with the end, the number of teeth 60, modulus 1.5, reference diameter 90mm.
The side of ring gear 9 is equipped with the equally distributed ring gear mounting hole 11 of ring gear centre bore 10 and 4, and ring gear 9 passes through countersunk head
Screw, ring gear mounting hole 11, rope sheave screw hole 8 and 7 fixing assembling of rope sheave.Meanwhile ring gear 9, rope sheave 7 also pass through internal tooth respectively
The centre bore of circle center hole 10 and rope sheave 7 is assembled with 6 activity of central axis jointly, is rotated synchronously.
As shown in Figure 6,7, pinion gear 12 is spur gear wheel, the number of teeth 19, modulus 1.5, reference diameter 28.5mm.It is small
Gear 12 is equipped with the symmetrical gear screw hole 14 of gear center hole 13 and 2.
As shown in Figure 8,9, 10, sliding slot 16 is channel steel shape, and it is symmetrical to be equipped with sliding slot centre bore 17 and 2 at the center line
Sliding slot mounting hole 18, sliding slot 16 passes through sunk screw, sliding slot mounting hole 18, gear screw hole 14 and 12 fixing assembling of pinion gear.
Sliding slot 16, pinion gear 12 pass through the 15 activity assembly of sliding slot centre bore 17, gear center hole 13 and gear shaft, synchronous rotation respectively.
As shown in Figure 11,12, one end of centrifugal-block 19 is half of cylindrical shape, and curved end is centrifugal-block arc end
20, the other end of centrifugal-block 19 is the cauda 21 of writing board shape, and cauda 21 is equipped with slotted hole 22.
As shown in figure 13, the cauda 21 of every two centrifugal-block 19 is overlapped, constitutes a pair of of centrifugal-block, and pass through slotted hole
22 assemble with 15 activity of gear shaft.This is also movably installed in sliding slot 16 centrifugal-block 19 simultaneously, i.e., centrifugal-block 19 can be in cunning
It is back and forth slided in slot 16.After centrifugal-block 19, the 15 activity assembly of sliding slot 16, pinion gear 12 and gear shaft, the right end of gear shaft 15 is filled
With circlip.
As shown in Figure 1,4 pinion gears 12 are engaged with ring gear 9 simultaneously, and 4 16 Tongfangs of sliding slot are kept in assembly
To (such as: direction shown in selection Figure 17).In this embodiment, the number of teeth of ring gear 9 is 60, is 4 integral multiple, 4
The number of teeth of pinion gear 12 is odd number 19, when sliding slot 16 and pinion gear 12 are assembled, should be directed at the center line of wherein 2 sliding slots 16
The tooth top center of pinion gear 12, it is vertical that the center line of another 2 sliding slots should pass through the diameter line at tooth top center with some, and then is easy to
Guarantee that 4 sliding slots 16 are equidirectional when 4 pinion gears 12 are engaged with ring gear 9, therefore when actual processing pinion gear 12, for therein
The line of centres of 2 pinion gears 12,2 gear screw holes 14 in each pinion gear is directed at tooth top center, for another 2 pinion gears
12, it is vertical that the line of centres of 2 gear screw holes 14 in each pinion gear with some passes through the diameter line at tooth top center.
Working principle: when rope belt running rope wheel 7 rotationally clockwise when, 9 clockwise direction of ring gear follows rotation,
Ring gear 9 drives 4 pinion gears 12 synchronous rotationally clockwise again, and each pinion gear 12 drives sliding slot 16 clockwise again
Rotation, each sliding slot 16 push a pair of of the centrifugal-block 19 being located therein rotationally clockwise again.In its rotation process, each sliding slot
It is all without contact between 16, between sliding slot 16 and the inner headed face of box body ring 5, but due to the effect of centrifugal force, each centrifugal-block 19 is
It is displaced outwardly, when centrifugal-block 19 is displaced outwardly without hindrance, until one end of the slotted hole 22 of cauda 21 is contacted with gear shaft 15,
Centrifugal-block 19 just stops outer moving.
The operating status of centrifugal-block 19 in Figure 17,18,19,20, be relative to ring gear 9 shown from opposite side, therefore
The direction of rotation of centrifugal-block 19 in figure is counterclockwise.
As shown in figure 18, when the rotation of sliding slot 16 to a certain angle, the centrifugation of the centrifugal-block 19 in two adjacent groups sliding slot 16
Block arc end 20 contacts with each other, and generates and hits and rub, the action direction of impact force F and connecing for place centrifugal-block arc end 20
The tangent line of contact is vertical, and component includes that capable component F1 and F2 are respectively perpendicular and parallel with the center line of sliding slot 16, and F1 plays resistance
Sliding slot 16 is hindered to continue the effect of rotation, F2 plays the role of making the retraction operation of centrifugal-block 19.
Under state as shown in figure 19, the centrifugal-block arc end 20 of two centrifugal-blocks 19 contacts with each other, and only generates friction.
As shown in figure 20, after sliding slot 16 is rotated further by certain angle, centrifugal-block arc end 20 and the inner headed face of box body ring 5 are connect
Touch and generate shock and friction, with it is above-mentioned similarly, one of component to sliding slot 16 continue rotation plays inhibition, another
Component makes the centrifugal-block 19 do retraction operation, and all shocks and friction finally make 7 uniform rotation of rope sheave, and human body or weight are at the uniform velocity
It falls.
Working principle when rope sheave 7 rotates counterclockwise is identical as above-mentioned principle.
In this embodiment, the rotating ratio of rope sheave 7, ring gear 9 and pinion gear 12 is 1:3.16, the i.e. every rotation of rope sheave 7
One week, pinion gear 12 rotated 3.16 weeks.4 pinion gears 12 often rotate a circle, and occur mutually to hit 8 times altogether between centrifugal-block 19,
Occurring to hit between centrifugal-block 19 and the inner headed face of box body ring 5 is also 8 times, therefore rope sheave 7 rotates a circle, and sends out altogether between centrifugal-block 19
Raw mutually to hit 25 times, occurring to hit between centrifugal-block 19 and the inner headed face of box body ring 5 is also 25 times, is added up to 50 times.By rope sheave 7
Diameter 46mm at winding wire ropes is calculated, week a length of 14.44cm.If human body or weight-drop speed 1m/ seconds, rope sheave 7
6.94 revolutions per seconds of revolving speed, then occur mutually to hit 173.5 times/second altogether between centrifugal-block 19, centrifugal-block 19 is interior with box body ring 5
Occurring to hit between disc is also 173.5 times/second, adds up to 347 times/second.
In this embodiment, shock is main damping mode, and friction is with generation is hit, although can also generate
Certain damping action, but be not main, therefore lubricating oil can be filled between all parts, mainly prevent metal parts
Seriously corrode and influence the using effect and service life of descending lifeline.
Claims (1)
1. a kind of shock and friction type descent control device damping unit, including box body, hanging scroll, central axis, rope sheave, ring gear, wherein box
Body is mainly the cavity being made of bottom cover, buckle closure and box body ring, and hanging scroll is installed between bottom cover and buckle closure and is located at top, in
The both ends of mandrel are assembled with bottom cover centre bore, buckle closure centre bore respectively, are equipped with annular groove on bottom cover, buckle closure, and in bottom cover
Heart hole, buckle closure centre bore are concentric, and the both ends of box body ring are respectively embedded into annular groove, i.e. box body ring and the central axis heart, rope
Wheel is located in box body, and the centre bore of rope sheave and central axis activity are assembled, it is characterized in that: ring gear is side tubular with the end or bottle
Lid shape, the side of ring gear are equipped with ring gear centre bore and ring gear mounting hole, and rope sheave side is equipped with rope sheave screw hole, ring gear
By sunk screw, ring gear mounting hole, rope sheave screw hole and rope sheave fixing assembling, meanwhile, ring gear passes through ring gear centre bore
It is assembled with central axis activity, i.e., ring gear, rope sheave can rotate synchronously, and identical 4 gear shafts, 4 are additionally provided in box body
Pinion gear, 4 sliding slots and 8 centrifugal-blocks, bottom cover are equipped with equally distributed 4 gear shaft mounting holes, 4 gear shaft right ends
After entering box body across gear shaft mounting hole, left end and bottom cover fixing assembling, pinion gear is spur gear wheel, which is provided with tooth
Take turns centre bore and 2 symmetrical gear screw holes, sliding slot is channel steel shape, the center line of each sliding slot be equipped with sliding slot centre bore with
2 symmetrical sliding slot mounting holes, are fixed between each sliding slot and pinion gear by sunk screw, sliding slot mounting hole, gear screw hole
Assembly, the two recycle sliding slot centre bore, gear center hole and gear shaft activity assembly, rotate synchronously, and one end of centrifugal-block is
Half of cylindrical shape, curved end are centrifugal-block arc end, and the cauda of the other end of centrifugal-block is writing board shape, are set on cauda
There is slotted hole, the cauda of every two centrifugal-block is overlapped, and constitutes a pair of of centrifugal-block, and passes through slotted hole while and gear shaft
Activity assembly, two centrifugal-blocks are also located in sliding slot simultaneously, and can back and forth slide in sliding slot, 4 pinion gears simultaneously with
Ring gear engagement, and keep 4 sliding slots equidirectional in assembly, when the rotation of rope belt running rope wheel, rope sheave drives ring gear
Rotation, ring gear drive 4 pinion gears to rotate synchronously again, and pinion gear drives sliding slot to rotate again, and each sliding slot pushes therein one again
Centrifugal-block is rotated, in its rotation process, is all without contact between each sliding slot, between sliding slot and the inner headed face of box body ring, but by
In the effect of centrifugal force, each centrifugal-block is displaced outwardly, when centrifugal-block is displaced outwardly it is without hindrance when, centrifugal-block is until cauda
One end of slotted hole contacted with gear shaft and stop it is outer move, when sliding slot turns to a certain angle, in two adjacent groups sliding slot from
The centrifugal-block arc end of heart block contacts with each other, and generates and hits and rub, and mutually plays the role of that sliding slot is hindered to continue rotation, together
When two centrifugal-blocks do retraction operation, after sliding slot is rotated further by certain angle, the inner circle face contact of centrifugal-block arc end and box body ring
And shock and friction are generated, and rotation is continued to sliding slot and plays inhibition, while the centrifugal-block also being made to do retraction operation, own
Shock and friction finally make rope sheave uniform rotation, human body or weight at the uniform velocity fall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811293670.1A CN109157772B (en) | 2018-11-01 | 2018-11-01 | Impact and friction type descent control device damping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811293670.1A CN109157772B (en) | 2018-11-01 | 2018-11-01 | Impact and friction type descent control device damping device |
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| CN109157772A true CN109157772A (en) | 2019-01-08 |
| CN109157772B CN109157772B (en) | 2020-04-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100014A (en) * | 2021-12-07 | 2022-03-01 | 北华大学 | Four-claw centrifugal body rolling impact type descent control device damping device |
| CN114100013A (en) * | 2021-12-07 | 2022-03-01 | 北华大学 | Friction and impact type descent control device damping device |
| CN114129921A (en) * | 2021-12-07 | 2022-03-04 | 北华大学 | Conical surface friction and impact type descent control device damping device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114100014A (en) * | 2021-12-07 | 2022-03-01 | 北华大学 | Four-claw centrifugal body rolling impact type descent control device damping device |
| CN114100013A (en) * | 2021-12-07 | 2022-03-01 | 北华大学 | Friction and impact type descent control device damping device |
| CN114129921A (en) * | 2021-12-07 | 2022-03-04 | 北华大学 | Conical surface friction and impact type descent control device damping device |
| CN114100014B (en) * | 2021-12-07 | 2023-03-10 | 北华大学 | Four-jaw centrifugal body rolling impact type descent control device damping device |
| CN114100013B (en) * | 2021-12-07 | 2023-03-21 | 北华大学 | Friction and impact type descent control device damping device |
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