CN108569635A - A kind of pulley blocks lifting device and its implementation with more multiplication journey speedups - Google Patents
A kind of pulley blocks lifting device and its implementation with more multiplication journey speedups Download PDFInfo
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- CN108569635A CN108569635A CN201810226057.1A CN201810226057A CN108569635A CN 108569635 A CN108569635 A CN 108569635A CN 201810226057 A CN201810226057 A CN 201810226057A CN 108569635 A CN108569635 A CN 108569635A
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- pulley
- steel wire
- wire rope
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- pulley group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/08—Arrangements of sheaves
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of pulley blocks lifting devices with more multiplication journey speedups and its implementation, device to include:Equalizer pulley group, angle pulley group, running block, fixed pulley group, steel wire rope, rack, lifting cylinder, control system；Using the combination kind of drive of lifting cylinder, pulley blocks, steel wire rope, it is driven by the combination of movable and fixed pulley group and angle pulley group and equalizer pulley group, form the structure that more multiplying powers are formed between movable pulley, half running block and semidefinite pulley blocks three, and moving and commutation between this three by steel wire rope, realize the structure of more multiplication journey speedups；By optimizing the angle between fixed pulley group steel wire rope, frictional force synergistic effect can be effectively reduced, realizes laborsaving operation；Using overall compact type design form, reduces the angle between steel wire rope between running block and fixed pulley group, reduce lateral frictional force, realize efficient raising efficiency.
Description
Technical field
The present invention relates to a kind of pulley blocks lifting device technical fields, specifically, are related to a kind of with more multiplication journeys increasings
The pulley blocks lifting device and its implementation of speed.
Background technology
Traditional increasing journey speedup lifting device uses multiple movable and fixed pulley combined systems, big, weight that there are pulley volumes
Greatly, pulley and the problems such as big steel wire rope frictional resistance, in place of leading to the deficiencies of integrated model efficiency is low, power attenuation is big.For into
One step raising efficiency reduces and promotes resistance, reduces power attenuation, efficiently fast implements and increase journey speedup, and high efficiency is steadily promoted, this
A kind of new control device of invention offer is lived using the combination kind of drive of lifting cylinder, pulley blocks, steel wire rope by oil cylinder
Relative motion between the telescopic band running block of stopper rod plays more multiplication journeys to the amplification of system by pulley blocks and increases
The effect of speed.
Invention content
It is an object of the invention to overcome the deficiencies in the prior art, discloses a kind of pulley blocks with more multiplication journey speedups and carry
Rise device and its implementation.
To achieve the goals above, present invention employs technical solutions below：A kind of cunning with more multiplication journey speedups
Wheel group lifting device, including:Equalizer pulley group（1）, angle pulley group（2）, big movable pulley（3）, running block（4）, fixed pulley
Group（5）, steel wire rope（6）, rack（7）, lifting cylinder（8）, control system（9）.
The control device uses lifting cylinder（8）, pulley blocks（3）（4）（5), the combination kind of drive of steel wire rope (6),
Half running block（4）Piston rod in lifting cylinder is set（801）External part, cylinder piston rod（801）Flexible drive
Relative motion between pulley blocks plays the effect of more multiplication journey speedups by pulley blocks amplification.
The control device is provided with equalizer pulley group（1）, the equalizer pulley group（1）It can be freely rotated, it can also
It swings, plays the equilibrant force between the steel wire rope of balanced hoisting mechanism, ensure that two steel wire ropes balance is firm and draw high promotion object.
The control device is provided with angle pulley group（2）, the angle pulley group be mounted on mechanism lower end, play and change
The stress for becoming steel wire rope draws high direction, while the effect of complex equilibrium running block, reaches multiple degrees of freedom balance and freely promotes object
Part.
The control device is provided with big movable pulley（3）, half running block（4）, semidefinite pulley blocks（5）, constitute dynamic/fixed sliding
Combined system is taken turns, the external part of lifting cylinder in the controls, wirerope-winding equalizer pulley group is arranged in running block（1）、
Angle pulley group（2）, big movable pulley（3）, half running block（4）, semidefinite pulley blocks（5）Both ends are connected firmly by rig thimbler afterwards
In rack.
The control device is provided with control system（9）, described device realizes control cylinder by a whole set of control system
It is flexible, by the effect of pulley combination system, change the displacement of steel wire rope to achieve the purpose that lifting object.
The control device uses steel wire rope（6）Coupled, and reduce the size of steel wire rope to the greatest extent, to ensure that device is whole
Body is compact and has with enough lifting forces.The steel wire rope is connected firmly by rig thimbler in rack, is coiled through dynamic/fixed
Pulley blocks（3）（4）（5）, angle pulley group（2）, equalizer pulley group（1）, connect firmly in rack, reach finally by rig thimbler
That is taken is two groups of steel wire ropes while drawing promotion object.
The control device is equipped with bearing, may be implemented to be freely rotated using combination transmission mechanism, all pulleys.It is described
Pulley has guiding groove by the size design of steel wire rope, ensures that steel wire rope is passed according to fixed track in entire transmission process
It is dynamic, it is moved in specified grooved tracks in wiring and movement, is unlikely to de- rope.
Preferably, half running block（4）Piston rod in lifting cylinder is set（801）External part, when oil cylinder is lived
Stopper rod（801）Reduction campaign drives the movement of movable pulley wheel group, while running block does rotation rotation, movable pulley also with rotation
Group not only moves up and down with cylinder piston rod, while also doing rotation movement.By changing between movable pulley and angle pulley
Distance realizes the length for changing steel wire rope, to realize the variation of displacement.
Preferably, the movable pulley combined system is by big movable pulley（3）With half running block（4）Two parts form.Institute
It states movable pulley combined system and uses compact design and installation fixed form, wherein half running block is also by three truckle groups
At being also to have certain mounting distance between three truckles, forming half running blocks by three truckles replaces big pulley
It is turned to realize；Simultaneously in order to realize compact effect, half running block and big pulley are simultaneously mounted on the stretching of lifting cylinder
End, half running block is mounted in centre, and big pulley is attached separately to the both sides of half running block.Movable pulley is with cylinder piston rod
It moves and moves.
Preferably, the fixed pulley group is fixed on the outside at the top of oil cylinder, play the role of commutation.Also subtract in this way
The position of installation is lacked, structure is compacter.Fixed pulley group is then arranged using by three truckles by certain position and radian
Semidefinite pulley blocks are formed to replace a big pulley, realize the effect of commutation, while semidefinite pulley blocks use three truckle groups
Between again have a certain distance arrangement, also have certain radian relationship between three pulleys, according to the diameter needed for angle pulley
To determine the distance between three truckles.Ensure that steel wire rope has suitable windup-degree when turning to, it is ensured that steel wire rope
It is not broken by strain.Three truckles all install bearing additional simultaneously, utmostly reduce frictional force, it is ensured that loss of friction is most
It is few.
Preferably, the commutation semidefinite pulley blocks and the structural principle of half running block mechanism are essentially identical, all
It is to be installed by certain radian and positional distance distribution by three truckles.But the mounting arrangement for the semidefinite pulley blocks that commutate has
Point is different.Commutation semidefinite three truckles of pulley blocks separately misplace arrangement, are arranged in the both sides of pulley pack support, are arranged so
Installation site can effectively be saved by being fixed on oil cylinder apical lateral, keep integrated model compacter.Two groups of commutations half simultaneously
Fixed pulley group is also to install by certain angle is opposite when being installed on oil cylinder.Facilitate the winding of steel wire rope.
Further preferably, composition is more between the movable pulley, half dynamic truckle group and commutation semidefinite truckle group three
The structure of multiplying power, moving and commutation between this three by steel wire rope realize the structure of more multiplication journey speedups, change steel wire rope
Length.When the certain displacement of cylinder piston rod reduction, the movement of pulley driving steel wire rope, steel wire rope reduction can change more times
The control effect of more multiplication journey speedups is realized in displacement.
After above-mentioned preferred embodiment, the present invention obtains following advantageous effect：
1. integrally being wound using steel wire rope, intermediate docking is reduced；Not only ensure enough rigidity and stabilization, but also facilitate steel wire rope in cunning
Winding between wheel.Two groups of rope hoisting weights are realized by equalizer pulley group, are reduced the stress of single group steel wire rope, are adopted simultaneously
Ensure steel wire rope with equalizer pulley group and promotes the stress balance of object.
2. realizing the journey speedups that double efficiently more；Using the combination of movable and fixed pulley group and angle pulley group and equalizer pulley group
It is driven to realize the purpose of more multiplication journey speedups, can realize different multiples by changing the various combination mechanism of pulley blocks
Increasing journey speedup.
3. effectively reducing frictional force synergistic effect；It is designed using pulley combination system, is pressed centainly using multiple truckles
Radian and the pulley combination mechanism of range distribution formula design replace large scale pulley, have not only ensured that stress is normal, but also can guarantee steel
Cord meets the requirements around gyration, realizes high-effective and labour-saving operation, effectively reduces the synergistic effect of frictional force.
4. compact installation, reducing side-friction force influences；Pulley blocks are uniformly installed concentratedly, and half dynamic truckle group is mounted on
The centre of big pulley, big movable pulley is mounted on half dynamic truckle group outer end both sides, intermediate by connecting shaft by running block collection
In be installed together.It combines in transmission mechanism, arranged in dislocation between the fixed pulley group that commutates and running block, it is ensured that steel wire rope is twining
Around when have a certain angle winding, while by running block setting mounted on the piston rod external part of lifting cylinder, and will commutation it is fixed
The top outer wall in oil cylinder is arranged in pulley blocks, it is ensured that the compact installation of package unit.
It, below will be to embodiment in order to illustrate more clearly of the present patent application embodiment or technical solution in the prior art
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments described in the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 mostly multiplication journey speedup lifting device installation diagrams
Fig. 2 moves/fixed pulley combination installation diagram front view
Fig. 3 moves/fixed pulley combination installation diagram side view
Fig. 4 pulley assembly system structure simplification figures
The multiplication journey speedup pulley blocks lifting device schematic diagrames of Fig. 54
The force analysis figure of Fig. 6 pulley blocks lifting devices
Fig. 7 pulley blocks lifting devices（Part）Wirerope-winding and force diagram
Fig. 8 pulley blocks lifting device comparison diagrams
Fig. 9 pulley blocks lifting device structural stress analysis figures.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction with attached in this bright embodiment
Figure, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
There is the every other embodiment obtained under the premise of making creative work, shall fall within the protection scope of the present invention.
Fig. 1 gives the journey speedup lifting device installation diagrams that double more, including:Equalizer pulley group 1, is moved greatly angle pulley group 2
Pulley 3, half running block 4, semidefinite pulley blocks 5, steel wire rope 6, rack 7, lifting cylinder 8, control system 9.
Equalizer pulley group 1 and angle pulley group 2 are provided with below described device rack, the equalizer pulley group 1 can be certainly
It by going to, can also swing, play the equilibrant force between two groups of ropes of balancing lift, ensure that two groups of cord balances are firm and draw
It rises and promotes object.The angle pulley group 2 is mounted on the lower end of mechanism, and the stress for playing change steel wire rope draws high direction, simultaneously
The effect of complex equilibrium running block reaches multiple degrees of freedom balance and freely promotes object.
It is provided with big movable pulley 3, half running block 4, fixed pulley group 5 above described device, constitutes dynamic/fixed pulley combination system
The external part of lifting cylinder 8 in the controls, wirerope-winding equalizer pulley group 1, angle pulley group is arranged in system, running block
2, both ends are connected firmly by rig thimbler in rack 7 after big movable pulley 3, half running block 4, fixed pulley group 5.
Described device is real by lifting cylinder 8, dynamic/fixed pulley group, 6 collective effect of steel wire rope using the combination kind of drive
Now it is driven.801 external part of piston rod in lifting cylinder 8, cylinder piston rod is arranged in 3 and half running block 4 of the big movable pulley
801 big 3 and half running block 4 of movable pulley of flexible drive realizes relative motion, passes through big movable pulley 3, half running block, 4 and
The amplification of 5 three's compound action of fixed pulley group plays the effect of more multiplication journey speedups.
Described device is coupled using two groups of steel wire ropes, and reduces the size of steel wire rope to the greatest extent, to ensure device entirety
It is compact and have with enough lifting forces.The control device is coupled using steel wire rope, and the steel wire rope passes through rigging
Lantern ring connects firmly in rack, steel wire rope successively pile warp it is dynamic/fixed pulley combined system, angle pulley group 2, equalizer pulley group 1, turn to
Pulley blocks 2, dynamic/fixed pulley combined system are also connected firmly finally by rig thimbler in rack 7.
Described device is equipped with bearing, may be implemented to be freely rotated using combination transmission mechanism, all pulleys.All pulleys
All there is guiding groove by the size design of steel wire rope, ensures in entire transmission process steel wire rope according to fixed track,
It is moved in specified grooved tracks when wiring and movement, is unlikely to de- rope.
Described device is provided with control system 9, and described device realizes the flexible of control cylinder by a whole set of control system,
By the effect of pulley combination system, change the displacement of steel wire rope to achieve the purpose that lifting object.
Fig. 2, Fig. 3 are respectively the front view and side view of dynamic/fixed pulley combination installation diagram.
801 external part of piston rod in lifting cylinder 8 is arranged in 3 and half running block 4 of the big movable pulley, works as oil cylinder piston
801 reduction campaign of bar drives big movable pulley 3 and half movable pulley wheel group 4 to move, while 3 and half running block 4 of big movable pulley is each
Truckle does rotation rotation also with rotation, and running block not only moves up and down with cylinder piston rod 801, while also doing rotation
Movement.By change between half fixed pulley 5 of both big 3 and half running blocks of movable pulley 4 movable pulley combined system and commutation away from
From realization changes the length of steel wire rope, to realize more times of variations of displacement.
The running block is made of big movable pulley 3 and half dynamic 4 two parts of truckle group.Movable pulley combined system is using tight
The design and installation fixed form gathered, wherein half dynamic truckle group 4 is also to be made of three truckles, between three truckles
It is to have certain mounting distance, replaces big pulley to be turned to realize by three truckle compositions.It is compact in order to realize simultaneously
Simultaneously mounted on the external part of lifting cylinder, the assembling 4 of half truckle is and big in centre for effect, half truckle group 4 and big pulley 3
Pulley 3 is attached separately to the both sides of truckle group.Movable pulley combined system is moved with the movement of cylinder piston rod.
The commutation semidefinite pulley blocks 5 are fixed on the outside at 8 top of oil cylinder, play the role of commutation, reduce installation
Position keeps structure compacter.The semidefinite pulley blocks 5 that commutate then press certain position and radian arrangement group using by three truckles
At a big pulley is replaced, the effect of steering is realized, while using having a certain distance arrangement again between three truckle groups,
Also have certain radian relationship between three pulleys, according to the diameter needed for angle pulley come determine between three truckles away from
From.Ensure that steel wire rope has suitable windup-degree when turning to, it is ensured that steel wire rope is not broken by strain.Three small cunnings simultaneously
Wheel all installs bearing additional, utmostly reduces frictional force, it is ensured that loss of friction is minimum.
Truckle group 5 is determined in the commutation and the structural principle of described half dynamic 4 mechanism of truckle group is essentially identical, but is turned to and slided
The mounting arrangement of wheel group is slightly different.The semidefinite pulley blocks 5 that commutate are distributed by three truckles by certain radian and positional distance
Formula is installed, and three truckles separately misplace arrangement, are arranged in the both sides of pulley pack support, are arranged so and are being fixed on oil cylinder
Apical lateral can effectively save installation site, keep integrated model compacter；Two groups of commutation semidefinite pulley blocks are in oil cylinder simultaneously
It is also to be installed by certain angle is opposite when installation, facilitates the winding of steel wire rope.
More multiplying powers are formed between the big movable pulley 3, half dynamic truckle group 4 and 5 three of commutation semidefinite truckle group
Structure, moving and commutation between this three by steel wire rope realize the structure of more multiplication journey speedups, change the length of steel wire rope
Degree.When the certain displacement of cylinder piston rod reduction, the movement of pulley driving steel wire rope, steel wire rope can change more times of displacement, real
The now control effect of more multiplication journey speedups.
All pulleys all design guiding groove by the size of steel wire rope, it is ensured that steel wire rope is referring in wiring and movement
It is moved in fixed grooved tracks, is unlikely to de- rope.Since steel wire rope has certain size, the hardness and toughness of different steel wire ropes are not
Together, steel wire rope be unable to any angle bending winding, have bending angle requirement in winding, thus the size of pulley also have it is certain
Diametric requirements, it is ensured that steel wire rope has enough bending angle in winding.Arranged in dislocation between three truckles of pulley blocks, by one
Fixed angular misalignment installation, while also pressing certain radian number of degrees among three truckles and installing, also keep certain between each other
Distance arrangement, ensure pulley blocks combination after have enough radians, while ensure steel wire rope alter course wiring, reach multi-lay winding,
Ensure the realization of mostly multiplication journey speedup.
To realize that the efficient increasing journey of pulley blocks lifting device increases effect, the present invention is by realizing more multiplication journey speedups, subtracting
Few frictional force synergistic effect reduces the embodiments such as side-friction force influences, realization multiple degrees of freedom operates, and is carried out in conjunction with attached drawing 4-9
Analysis, illustrates the implementation method of the pulley blocks lifting device.
Embodiment 1：The implementation method of more multiplication journey speedups
Fig. 4 is pulley assembly system structure simplification figure, and the steel wire rope 6 is successively in the pulley blocks（Big pulley 3, half dynamic cunning
Wheel group 4, semidefinite pulley blocks 5）Constructional device winding is respectively 601,602,603,604, and the steel wire rope wound between pulley blocks has 4
Root, this 4 steel wire ropes change, the change in displacement and piston rod of this 4 steel wire ropes with the stretching for reduction piston rod of oil cylinder
Telescopic displacement variation be consistent.
Fig. 5 is 4 multiplication journey speedup pulley blocks lifting device schematic diagrames, described when the oil cylinder telescopic piston rod 801 moves
It is S1 that running block is moved to the distance between position A from position B, and running block is the distance between from position C to position A
S2, piston rod produce the displacement of H1（H1=S2-S1）, also generate the displacement of H1 between corresponding pulley blocks, corresponding 601,602,
603,604 steel wire rope also each generates the change in displacement of H1, four common displacements for generating 4*H1, by the steering of pulley
Winding with steel wire acts on, and generation is in the displacement that the effect displacement of object is exactly H2.Due to there is H2=4*H1, therefore generate 4 multiplying powers
Increase Cheng Xiaoguo.
Further, change nyctitropic effect since pulley only serves, when cylinder action, telescopic piston rod is done flexible dynamic
Make, all pulleys of pulley block mechanism device all act simultaneously, not generation time superposition or delay, so corresponding act on carries
Ascending part point is also to be carried out at the same time, that is to say, that the actuation time of oil cylinder（The reduction time of piston rod）, that is, lift portion
Action time, when time of the two, are the same, and promote the increasing Cheng Weiyi that displacement is 4 times to the effect of object, according to v=s/t,
I.e. system generates 4 multiplication effects.
Further, pass through the pulley of change pulley mechanism（Pulley blocks）Structure, the quantity of pulley blocks and mounting means,
The canoe of steel wire rope may be implemented a variety of different multiplyings and increase journey increasing effect.
Embodiment 2：Reduce the implementation method of frictional force synergistic effect
Fig. 6 is the force analysis figure of pulley blocks lifting device, and the steel wire rope 6 is in entire pulley block mechanism, because of apparatus structure
With the canoe of steel wire rope, causing steel wire rope and all pulleys has contact and friction, generates frictional force, all pulleys rub
The superposition for wiping power, can not only increase the load force of driving, influence the efficiency of entire mechanism, while also accelerate steel wire rope and pulley
Abrasion, influences the service life of steel wire rope and pulley.
A points are the stress points of cylinder piston rod and pulley blocks, the maximum weighted point between steel wire rope and pulley be respectively B,
C, tetra- points of D, E, corresponding normal pressure are respectively F, F3, F4, F5, and frictional force is respectively f0, f1, f2, f3.Wherein big pulley
B point F stress is maximum, and tri- points F3, F4, F5 of truckle C, D, E are of substantially equal, smaller than the B point F stress of big pulley.
Due to having F1=F2, a F3=F4=F5, therefore F=F1+F2=2F1
If the angle above the semidefinite pulley blocks 5 between two steel wire ropes is β, then
F3=F1*cos(β/2）+F2*cos(β/2）=2F1*cos(β/2）= F*cos(β/2）
Therefore have：F3=F4=F5=F*cos(β/2）.
Position relationship between the stress of half movable pulley truckle and half movable pulley mechanism truckle is related, half running block
The structure of mechanism also influences whether the stressing conditions of truckle.
Friction coefficient between steel wire rope and each pulley is μ, and big pulley frictional force is f0, and three truckles are respectively
F1, f2, f3, then
f0=μ*F
f1=μ*F3=μ*F*cos(β/2）
f2=μ*F4=μ*F*cos(β/2）
f3=μ*F5=μ*F*cos(β/2）
The mutual synergistic effect of all frictional force is converted into the driving load of entire mechanism, influences the efficiency of entire mechanism, together
When also because of the effect of rubs mutually, accelerate the abrasion between steel wire rope and pulley, influence the service life of part, package unit institute
Some frictional force superpositions, the effect generated clearly, can not be ignored.
Apparatus of the present invention use the form of movable pulley, install bearing additional in all pulleys, are carried out by bearing and device
It connects firmly, ensures device at work in this way, pulley can be freely rotated.Big movable pulley and half running block mechanism are in work
It in work, both with the up and down motion of cylinder piston rod, while being also freely rotated, frictional force is converted to the frictional force of bearing,
By adjusting running block installation site, optimize the angle β between steel wire rope, can significantly degree reduce pulley and steel wire rope it
Between friction, from measured data as can be seen that positive frictional force can reduce up to 90% or more between steel wire rope and pulley, energy
Effectively improve the service life of pulley block mechanism.
Embodiment 3：Reduce the implementation method that side-friction force influences
Fig. 7 is pulley blocks lifting device（Part）Wirerope-winding and force diagram, the steel wire rope 6 is in big movable pulley 3, half dynamic cunning
It is wound successively between wheel group 4 and semidefinite pulley blocks 5, the steel wire rope between pulley respectively is 601,602,603,604.
Because of the structure design of pulley blocks, there are certain position relationships between pulley, so steel wire is wound between pulley, described half
There are certain angle α between steel wire rope 601,602,603,604 between running block 4 and the semidefinite pulley blocks 5, therefore pulley
Not only there is the pulling force N1 of vertical direction, while there is also the sizes of the radial load N2, N1 and N2 of horizontal direction by angle α
The influence of size, the calculated relationship between N1, N2 and F1, F2 and angle α are：
N1 =F1*cosα= F2*cosα
N2 =F1*sinα= F2*sinα
Due to the presence of N2, lateral frictional force f is generated, if friction coefficient is μ, is then had：
f=μ*N2=μ* F1*sinα
Due to the presence of horizontal radial power N2, steel wire rope is caused to be easy to loosen, while also resulting in and being generated between steel wire rope and pulley
Side-friction force；To avoid the generation of steel wire rope being disengaged from the groove, all pulleys of the present invention are all had by the size design of steel wire rope
It is oriented to groove, ensures that steel wire rope avoids the occurrence of the de- rope phenomenon of steel wire rope according to fixed track in entire transmission process.
Fig. 8 is pulley blocks lifting system device comparison diagram, and the pulley block mechanism device of apparatus of the present invention has compact effect
Fruit, more much smaller than the steel wire rope angle α of conventional apparatus, the angle between steel wire rope is obviously improved, and efficiency is obviously carried
Height, from measured data as can be seen that the angle α that steel wire rope is wound in pulley in conventional apparatus is about steel wire in apparatus of the present invention
2 times of the angle α of rope, therefore apparatus of the present invention can more effectively reduce side-friction force influence.
Embodiment 4：The implementation method of multiple degrees of freedom operation
Fig. 9 is pulley blocks lift structure force analysis figure, and described device uses dynamic balancing pulley gear 1 and angle pulley group machine
Structure device 2, it can be achieved that steel wire rope tension balanced.
If weighing items are G, the pulling force of two steel wire ropes is respectively F1, F2, then
G=F1+F2
F1=F2=G/2
Therefore the stress of single wire rope can reduce half, while using angle pulley mechanism arrangement so that whole device exists
It can be operated with multiple degrees of freedom in promotion, increase the use adaptability of system and device.Angle pulley group 2 functions only as changing nyctitropic
Effect, the size without changing power.
Although disclosed herein embodiment it is as above, the content only to facilitate understand type of the present invention and
The embodiment of use, is not limited to the present invention.The preferred embodiment be only to illustrate the present invention and it is unrestricted, although
It is described the invention in detail with reference to this preferred embodiment, it will be understood by those of ordinary skill in the art that, it is not departing from
To the modification of the invention carried out or equivalent replacement under the premise of spirit and scope of the present invention, such as using change multiplying power
Number, the number of structures and size dimension of pulley blocks, the group number of steel wire rope, canoe of steel wire rope etc. should all be covered in the present invention
Right in, still should be subject to the scope of the claims as defined in the appended claims.
Claims (5)
1. a kind of pulley blocks lifting device with more multiplication journey speedups, including:Equalizer pulley group, angle pulley group, movable pulley
Group, fixed pulley group, steel wire rope, rack, control system, it is characterised in that：
Described device is provided with equalizer pulley group, and running block is designed by compact layout and lifting oil in the controls is arranged
The external part of cylinder, it is solid by rig thimbler after wirerope-winding equalizer pulley group, angle pulley group, running block, fixed pulley group
It is associated in rack；
Described device is coupled using steel wire rope, and being connected firmly in rack by rig thimbler for steel wire rope coils through successively
Movable pulley combined system, commutation fixed pulley group, equalizer pulley group, angle pulley group, also connect firmly finally by rig thimbler in machine
On frame.
2. according to the pulley blocks lifting device implementation method with more multiplication journey speedups described in claim 1, feature exists
In：
The pulley assembly is formed big dynamic using the combination transmission of fixed and moving pulley blocks and angle pulley group and equalizer pulley group
The composite structure of more multiplying powers is formed between pulley, half running block, semidefinite pulley blocks and the more persons of angle pulley group；Pass through steel wire
The structure of more multiplication journey speedups is realized in rope moving and commutation between this pulley combination mechanism；Changed by cylinder piston rod reduction
The length for becoming steel wire rope realizes the increasing journey speedup of different multiples by the combined mechanism of pulley blocks, realizes more multiplication journey speedups
Purpose.
3. according to the pulley blocks lifting device implementation method with more multiplication journey speedups described in claim 1, feature exists
In：
Described device changes the angle between fixed pulley group steel wire rope by adjusting running block installation site, and steel wire can be changed
Normal pressure and frictional force between rope and pulley；By optimizing the angle between fixed pulley group steel wire rope, friction can be effectively reduced
Power synergistic effect realizes laborsaving operation.
4. according to the pulley blocks lifting device implementation method with more multiplication journey speedups described in claim 1, feature exists
In：
Described device uses overall compact type design form, reduces the angle between running block and fixed pulley group steel wire rope, drop
Downside to frictional force, improve working efficiency；All pulleys are equipped with bearing, may be implemented to be freely rotated；Pulley presses steel wire rope
Size design have guiding groove, ensure that steel wire rope avoids the occurrence of steel wire rope according to fixed track in entire transmission process
De- rope phenomenon.
5. according to the pulley blocks lifting device implementation method with more multiplication journey speedups described in claim 1, feature exists
In：
The control device is designed using compact layout, and pulley blocks are uniformly installed concentratedly, and half dynamic truckle group is mounted on big pulley
Centre, big movable pulley is mounted on half dynamic truckle group outer end both sides, intermediate to be installed concentratedly running block by connecting shaft
Together, semidefinite pulley blocks are then installed mounted in the outside on oil cylinder top, it is ensured that the compact installation of package unit；Half pulley is used simultaneously
Combined system designs, using the half pulley combination mechanism designed by certain radian and range distribution formula by multiple truckles come generation
For large scale pulley, same function is realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810226057.1A CN108569635A (en) | 2018-03-19 | 2018-03-19 | A kind of pulley blocks lifting device and its implementation with more multiplication journey speedups |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810226057.1A CN108569635A (en) | 2018-03-19 | 2018-03-19 | A kind of pulley blocks lifting device and its implementation with more multiplication journey speedups |
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| CN108569635A true CN108569635A (en) | 2018-09-25 |
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| CN201810226057.1A Pending CN108569635A (en) | 2018-03-19 | 2018-03-19 | A kind of pulley blocks lifting device and its implementation with more multiplication journey speedups |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110027720A (en) * | 2019-05-13 | 2019-07-19 | 南京航空航天大学 | A kind of portable pneumatic fixed-wing unmanned aerial vehicle ejecting system and working method |
| CN110407120A (en) * | 2019-08-05 | 2019-11-05 | 希美克(广州)实业有限公司 | Lifting cabinet and its wirerope steering system, wirerope transfer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247206Y (en) * | 1996-03-13 | 1997-02-12 | 谭焯鸿 | Hydraulic lifting device for storeyed stereo garage |
| CN1191938A (en) * | 1998-01-21 | 1998-09-02 | 王凡成 | Oil well pump for crude oil under well |
| CN201236103Y (en) * | 2008-06-26 | 2009-05-13 | 卫华集团有限公司 | Winding mechanism of trestle crane hoisting mechanism steel wire rope |
| CN102674148A (en) * | 2012-05-05 | 2012-09-19 | 无锡市新华起重工具有限公司 | Dual wood grab bucket |
| CN102942111A (en) * | 2012-11-15 | 2013-02-27 | 诺威起重设备（苏州）有限公司 | Oblique-pulley lifting hook device |
| CN103433798A (en) * | 2013-09-06 | 2013-12-11 | 中国工程物理研究院机械制造工艺研究所 | Counterweight mechanism of high-frequency reciprocating movement part |
| CN205151622U (en) * | 2015-10-20 | 2016-04-13 | 法兰泰克重工股份有限公司 | Double -deck wire rope electric block |
| CN106495024A (en) * | 2016-12-14 | 2017-03-15 | 中航飞机股份有限公司西安飞机分公司 | A kind of rotation and lifting conveying arrangement and using method |
-
2018
- 2018-03-19 CN CN201810226057.1A patent/CN108569635A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247206Y (en) * | 1996-03-13 | 1997-02-12 | 谭焯鸿 | Hydraulic lifting device for storeyed stereo garage |
| CN1191938A (en) * | 1998-01-21 | 1998-09-02 | 王凡成 | Oil well pump for crude oil under well |
| CN201236103Y (en) * | 2008-06-26 | 2009-05-13 | 卫华集团有限公司 | Winding mechanism of trestle crane hoisting mechanism steel wire rope |
| CN102674148A (en) * | 2012-05-05 | 2012-09-19 | 无锡市新华起重工具有限公司 | Dual wood grab bucket |
| CN102942111A (en) * | 2012-11-15 | 2013-02-27 | 诺威起重设备（苏州）有限公司 | Oblique-pulley lifting hook device |
| CN103433798A (en) * | 2013-09-06 | 2013-12-11 | 中国工程物理研究院机械制造工艺研究所 | Counterweight mechanism of high-frequency reciprocating movement part |
| CN205151622U (en) * | 2015-10-20 | 2016-04-13 | 法兰泰克重工股份有限公司 | Double -deck wire rope electric block |
| CN106495024A (en) * | 2016-12-14 | 2017-03-15 | 中航飞机股份有限公司西安飞机分公司 | A kind of rotation and lifting conveying arrangement and using method |
Non-Patent Citations (1)
| Title |
|---|
| 段慧文等: "<舞台机械工程与舞台机械设计>", 30 June 2013 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110027720A (en) * | 2019-05-13 | 2019-07-19 | 南京航空航天大学 | A kind of portable pneumatic fixed-wing unmanned aerial vehicle ejecting system and working method |
| CN110027720B (en) * | 2019-05-13 | 2023-09-26 | 南京航空航天大学 | Portable pneumatic fixed wing unmanned aerial vehicle ejection system and working method |
| CN110407120A (en) * | 2019-08-05 | 2019-11-05 | 希美克(广州)实业有限公司 | Lifting cabinet and its wirerope steering system, wirerope transfer |
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Application publication date: 20180925 |