CN204569270U - Pulley cascade pulling force multiplicator - Google Patents
Pulley cascade pulling force multiplicator Download PDFInfo
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- CN204569270U CN204569270U CN201520207191.9U CN201520207191U CN204569270U CN 204569270 U CN204569270 U CN 204569270U CN 201520207191 U CN201520207191 U CN 201520207191U CN 204569270 U CN204569270 U CN 204569270U
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- pulley
- pulling force
- movable pulley
- rope
- cascade
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Abstract
The utility model relates to a kind of pulley cascade pulling force multiplicator, particularly have employed the pulley cascade pulling force multiplicator that nested structure running block is formed, belongs to elevator machinery or pulling force multiplying assembly.Pulley cascade pulling force multiplicator is made up of movable pulley and rope, is pulled object and is connected with the center shaft of the 1st movable pulley, is buckled in that the 1st movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected with the center shaft of the 2nd movable pulley; Be buckled in that N number of movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected with the center shaft of N+1 movable pulley; Be buckled in that last 1 movable pulley rope one end is circumferentially fixed on supporting object, the other end is directly drawn or indirectly drawn by fixed pulley.Pulley cascade pulling force multiplicator has the features such as structure is simple, efficiency is higher, with low cost, easy to use, has a wide range of applications.
Description
Technical field
The utility model relates to a kind of pulley cascade pulling force multiplicator, particularly have employed the pulley cascade pulling force multiplicator that nested structure running block is formed, belongs to elevator machinery or pulling force multiplying assembly.
Background technology
Often need to use elevator machinery energetically in the production processs such as workers and peasants' mining industry or life, pulling force is amplified by assembly pulley by elevator machinery energetically, realizes little pulling force and mentions heavy weight object.
Assembly pulley is made up of fixed pulley and movable pulley etc. usually, and wherein fixed pulley is for changing the Impact direction of rope, plays transitional function; And movable pulley not only changes the transitional function of rope Impact direction, also have the effect of amplifying pulling force, the magnification factor of its pulling force is twice.
The assembly pulley be made up of fixed pulley and movable pulley at present adopts parallel organization, and increased the magnification factor of assembly pulley pulling force by the quantity increasing movable pulley and fixed pulley, its rule is: the magnification factor often increasing a movable pulley pulling force just increases by 2.
The assembly pulley of parallel organization as shown in Figure 1 to 4.
When the object that lifting quality is very large, hoisting device is needed to possess very large pulling force, also just need hoisting device to have very large pulling force magnification factor, also just need very many movable pulleys, fixed pulley to form assembly pulley, cause the volume of assembly pulley, weight, cost, complexity greatly to raise.How to realize maximum pulling force magnification factor by minimum pulley quantity is a difficult problem.
Summary of the invention
Technical problem to be solved in the utility model is:
1, maximum pulling force magnification factor is realized by minimum pulley quantity;
2, the volume of assembly pulley, weight, cost and complexity is reduced.
The utility model provides a kind of pulley cascade pulling force multiplicator.
Technical problem to be solved in the utility model is achieved through the following technical solutions.
A kind of pulley cascade pulling force multiplicator, for being enlarged into a large pulling force by a little pulling force; Pulley cascade pulling force multiplicator forms primarily of movable pulley and rope, and multiple movable pulley forms assembly pulley by rope; Be pulled object to be connected with the center shaft of the 1st movable pulley, be buckled in that the 1st movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected with the center shaft of the 2nd movable pulley; Be buckled in that the 2nd movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected with the center shaft of the 3rd movable pulley; Be buckled in that N number of movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected with the center shaft of N+1 movable pulley; Be buckled in that last 1 movable pulley rope one end is circumferentially fixed on supporting object, the other end is directly drawn or indirectly drawn by fixed pulley.
Supporting object is fixed on large ground, building usually, or is exactly greatly or building itself.
Movable pulley diminishes successively from the 1st to last 1 its size, and corresponding rope also attenuates successively.
Movable pulley its circumferentially have round bottom groove, rope buckle is in round bottom groove.
Pulley cascade pulling force multiplicator adopts the nested structure of movable pulley cascade, is often just exaggerated 2 times through a movable pulley pulling force, thus can realizes the quick amplification of pulling force.
The corresponding relation of movable pulley quantity and force amplifying function: when movable pulley quantity is 2,3,4,5,6,7,8,9,10, force amplifying function corresponding is respectively 4,8,16,32,64,128,256,512,1024.
When movable pulley quantity is 16, the force amplifying function of pulley cascade pulling force multiplicator is 65536 times.
When movable pulley quantity is 20, the force amplifying function of pulley cascade pulling force multiplicator is 1048576 times.
Pulley cascade pulling force multiplicator can not need fixed pulley, pulley quantity is the half of common parallel arrangement pulley wheels group, thus greatly reduce the quantity of pulley, also greatly simplify the structure of assembly pulley, also reduce the volume of assembly pulley, weight, cost and complexity, also improve the efficiency of assembly pulley simultaneously.
Pulley cascade pulling force multiplicator is the assembly pulley not needing fixed pulley, has the features such as structure is simple, efficiency is higher, with low cost, easy to use, has a wide range of applications in the activity in production such as Experiments of Machanics, elevator machinery.
Accompanying drawing explanation
Fig. 1 forms by 1 movable pulley and 1 fixed pulley the common parallel arrangement pulley wheels group that force amplifying function is 2 times.
Fig. 2 forms by 2 movable pulleys and 2 fixed pulleys the common parallel arrangement pulley wheels group that force amplifying function is 4 times.
Fig. 3 forms by 3 movable pulleys and 3 fixed pulleys the common parallel arrangement pulley wheels group that force amplifying function is 6 times.
Fig. 4 forms by 5 movable pulleys and 5 fixed pulleys the common parallel arrangement pulley wheels group that force amplifying function is 10 times.
Fig. 5 forms by 2 movable pulleys and 1 fixed pulley the pulley cascade pulling force multiplicator that force amplifying function is 4 times.
Fig. 6 forms by 3 movable pulleys the pulley cascade pulling force multiplicator that force amplifying function is 8 times.
Fig. 7 forms by 4 movable pulleys and 1 fixed pulley the pulley cascade pulling force multiplicator that force amplifying function is 16 times.
Fig. 8 forms by 5 movable pulleys the pulley cascade pulling force multiplicator that force amplifying function is 32 times.
Fig. 9 forms by 3 different movable pulleys and 1 fixed pulley the pulley cascade pulling force multiplicator that force amplifying function is 8 times.
Figure 10 forms by 5 different movable pulleys and 1 fixed pulley the pulley cascade pulling force multiplicator that force amplifying function is 32 times.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.
Embodiment
Pulley cascade pulling force multiplicator, can be enlarged into a large pulling force by a little pulling force exponentially.
Pulley cascade pulling force multiplicator is made up of movable pulley and rope, movable pulley its circumferentially have round bottom groove, rope buckle is in round bottom groove.
By 2 movable pulleys and 1 fixed pulley form force amplifying function be the pulley cascade pulling force multiplicator of 4 times as shown in Figure 5.
Be pulled object to be connected with the center shaft of the 1st movable pulley, be buckled in the 1st movable pulley rope one end circumferentially and be fixed on and be pulled that object is done on the supporting object of relative motion, the other end is connected with the center shaft of the 2nd movable pulley; Be buckled in the 2nd movable pulley rope one end be circumferentially fixed on and be pulled that object is done on the supporting object of relative motion, the other end is connected trailer-type machine by fixed pulley.
By 3 movable pulleys form force amplifying function be the pulley cascade pulling force multiplicator of 8 times as shown in Figure 6.
Be pulled object to be connected with the center shaft of the 1st movable pulley, be buckled in that the 1st movable pulley rope one end is circumferentially fixed on building, the other end is connected with the center shaft of the 2nd movable pulley; Be buckled in that the 2nd movable pulley rope one end is circumferentially fixed on building, the other end is connected with the center shaft of the 3rd movable pulley; Be buckled in that the 3rd movable pulley rope one end is circumferentially fixed on building, the direct trailer-type machine of the other end.
By 4 movable pulleys and 1 fixed pulley form force amplifying function be the pulley cascade pulling force multiplicator of 16 times as shown in Figure 7.
By 5 movable pulleys form force amplifying function be the pulley cascade pulling force multiplicator of 32 times as shown in Figure 8.
Be pulled object to be connected by the center shaft of U-shaped attaching parts with the 1st movable pulley, be buckled in that the 1st movable pulley rope one end is circumferentially fixed on large ground, the other end is connected by the center shaft of U-shaped attaching parts with the 2nd movable pulley; Be buckled in that the 2nd movable pulley rope one end is circumferentially fixed on large ground, the other end is connected by the center shaft of U-shaped attaching parts with the 3rd movable pulley; Be buckled in that N number of movable pulley rope one end is circumferentially fixed on large ground, the other end is connected with the center shaft of N+1 movable pulley by U-shaped attaching parts; Be buckled in last 1 movable pulley rope one end to be circumferentially fixed on large ground, the other end and directly to draw or indirectly drawn by fixed pulley.Traction power can from electrical motor or combustion engine.
By 3 different movable pulleys and 1 fixed pulley form force amplifying function be the pulley cascade pulling force multiplicator of 8 times as shown in Figure 9.
By 5 different movable pulleys and 1 fixed pulley form force amplifying function be the pulley cascade pulling force multiplicator of 32 times as shown in Figure 10.
Be pulled object to be connected by the center shaft of U-shaped attaching parts with the 1st movable pulley, be buckled in that the 1st movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected by the center shaft of U-shaped attaching parts with the 2nd movable pulley; Be buckled in that N number of movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected with the center shaft of N+1 movable pulley by U-shaped attaching parts; Be buckled in that last 1 movable pulley rope one end is circumferentially fixed on supporting object, the other end is directly drawn or indirectly drawn by fixed pulley.According to the difference of the stressed size of each movable pulley, movable pulley diminishes successively from the 1st to last 1 its size, and corresponding rope also attenuates successively.
Claims (3)
1. a pulley cascade pulling force multiplicator, for being enlarged into a large pulling force by a little pulling force; It is characterized in that:
Pulley cascade pulling force multiplicator forms primarily of movable pulley and rope, and multiple movable pulley forms assembly pulley by rope; Be pulled object to be connected with the center shaft of the 1st movable pulley, be buckled in that the 1st movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected with the center shaft of the 2nd movable pulley; Be buckled in that the 2nd movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected with the center shaft of the 3rd movable pulley; Be buckled in that N number of movable pulley rope one end is circumferentially fixed on supporting object, the other end is connected with the center shaft of N+1 movable pulley; Be buckled in that last 1 movable pulley rope one end is circumferentially fixed on supporting object, the other end is directly drawn or indirectly drawn by fixed pulley.
2., by pulley cascade pulling force multiplicator according to claim 1, it is characterized in that:
Described movable pulley diminishes successively from the 1st to last 1 its size, and corresponding rope also attenuates successively.
3., by pulley cascade pulling force multiplicator according to claim 1 or claim 2, it is characterized in that:
Described movable pulley its circumferentially have round bottom groove, rope buckle is in round bottom groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207191.9U CN204569270U (en) | 2015-04-08 | 2015-04-08 | Pulley cascade pulling force multiplicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207191.9U CN204569270U (en) | 2015-04-08 | 2015-04-08 | Pulley cascade pulling force multiplicator |
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| Publication Number | Publication Date |
|---|---|
| CN204569270U true CN204569270U (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520207191.9U Expired - Fee Related CN204569270U (en) | 2015-04-08 | 2015-04-08 | Pulley cascade pulling force multiplicator |
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| Country | Link |
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| CN (1) | CN204569270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468737A (en) * | 2019-08-14 | 2019-11-19 | 中铁武汉勘察设计研究院有限公司 | A kind of bridge rotating system that pulley structure is set |
-
2015
- 2015-04-08 CN CN201520207191.9U patent/CN204569270U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468737A (en) * | 2019-08-14 | 2019-11-19 | 中铁武汉勘察设计研究院有限公司 | A kind of bridge rotating system that pulley structure is set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |