CN104820446B - A kind of curved surface constant force mechanisms - Google Patents
A kind of curved surface constant force mechanisms Download PDFInfo
- Publication number
- CN104820446B CN104820446B CN201510197530.4A CN201510197530A CN104820446B CN 104820446 B CN104820446 B CN 104820446B CN 201510197530 A CN201510197530 A CN 201510197530A CN 104820446 B CN104820446 B CN 104820446B
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- Prior art keywords
- curved surface
- constant force
- rolling bearing
- roller assembly
- assemblies
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Abstract
The invention provides a kind of curved surface constant force mechanisms, the mechanism is made up of base assembly, thrust assemblies and constant force component；The base assembly is made up of cover plate, outer barrel and base plate, and each several part is connected successively；The thrust assemblies are made up of screw, upper limit bar, spring, lower limit bar and wedge assemblies, and each several part is sequentially connected；The wedge assemblies are made up of voussoir, rolling bearing and heart axle, and rolling bearing is arranged on voussoir by heart axle；Thrust assemblies are arranged in base assembly；The constant force component is made up of roller assembly and curved surface push rod, and roller assembly is contacted with curved surface push rod；The roller assembly is made up of support frame, rolling bearing and heart axle, and rolling bearing is arranged on voussoir by heart axle；Constant force component is arranged in base assembly, and is contacted with thrust assemblies.The present invention has small volume, simple structure, reliability high, the advantage not limited by installation site.
Description
Technical field
The present invention relates to a kind of constant force load maintainer, more particularly to a kind of curved surface constant force mechanisms.
Background technology
Constant force mechanisms are used widely in numerous areas, such as coil paper, the testing of materials, space equipment, thermal power generation, right
The safety and reliability of equipment has a major impact.And the method for the constant force being obtained in that at present has：Mechatronics control, weight
The methods such as dynamic balance.Mechatronics control can realize the precise control of power by feedback effect, but generally should
Structure is complex, volume is larger, reliability is not high.Gravity being input into as constant force that gravitational equilibrium method is subject to by weight,
Precision very high can be obtained, but this device is higher to installation site requirement, it is difficult to meet practical application condition.
The content of the invention
It is an object of the invention to overcome existing constant force mechanisms above shortcomings, there is provided a kind of small volume, structure letter
Single, reliability curved surface constant force mechanisms high.
The present invention uses following technical scheme.
Curved surface constant force mechanisms of the invention are made up of base assembly, thrust assemblies and constant force component：
1）The base assembly is made up of cover plate, outer barrel and base plate；Cover plate, outer barrel and base plate are connected successively；
2）The thrust assemblies are made up of screw, upper limit bar, spring, lower limit bar and wedge assemblies；Screw, upper limit
Bar, spring, lower limit bar and wedge assemblies are sequentially connected；Upper limit bar is connected by screw with cover plate, wedge assemblies and outer barrel
Interior chute contact；The wedge assemblies are made up of voussoir, rolling bearing and heart axle；Rolling bearing is fixed on voussoir by heart axle
On, wedge assemblies are contacted by rolling bearing with the chute in outer barrel；
3）The constant force component is made up of roller assembly and curved surface push rod；The curved face contact of roller assembly and curved surface push rod；
Roller assembly is arranged on base plate, and the contact of incline plane of roller assembly and voussoir, curved surface push rod passes through pressing plate center；The set of rollers
Part is made up of support frame, rolling bearing and heart axle；Rolling bearing is fixed on support frame by heart axle, and roller assembly is by rolling
Bearing and curved surface push rod, voussoir and contacts baseplate.
In such scheme, installation of staggering between the rolling bearing on wedge assemblies on decentraction axle, the symmetrical cloth of rolling bearing
Put so that overall structure is compacter, stressing conditions are preferable.
In such scheme, installation of staggering between the rolling bearing on roller assembly on decentraction axle, the symmetrical cloth of rolling bearing
Put so that overall structure is compacter, stressing conditions are preferable.
In such scheme, thrust assemblies are identical with constant force component count, at least two groups, and around curved surface push rod center
Line is uniformly distributed.
Constant force realization principle of the present invention is power decomposition principle.Specific implementation：The power that spring is produced is applied to set of rollers
Roller on part, the curved face contact of roller and curved surface push rod, roller with roller assembly to being moved away from base plate center during,
Spring is compressed, and power increase of the one side spring effect on roller, another aspect roller increases with the slope of curved face contact point,
Final effect is so that the active force between roller and inclined-plane keeps constant in the component on roller movement direction, and will
This masterpiece is output, so as to realize constant force.
The beneficial effects of the invention are as follows：1. the present invention uses pure mechanic structure, and reliability is high；2. power decomposition principle is used,
Principle and simple structure so that organization volume reduces；3. it is not that constant force is produced by gravity, is not limited by installation site.
Brief description of the drawings
Fig. 1 is the main sectional view of curved surface constant force mechanisms.
Fig. 2 is the structure diagram of constant force mechanisms.
Fig. 3 is the overall structure figure of wedge assemblies.
Fig. 4 is the overall structure figure of roller assembly.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in further detail.
As shown in figure 1, the invention provides a kind of structure type of embodiment, in the present embodiment, the important bag of constant force mechanisms
Include base assembly, thrust assemblies and constant force component；
The base assembly is by cover plate（1）, outer barrel（2）And base plate（3）Composition；Cover plate（1）, outer barrel（2）And base plate（3）According to
It is secondary to be connected；
The thrust assemblies are by screw（4）, upper limit bar（5）, spring（6）, lower limit bar（7）Constituted with wedge assemblies；
Screw（4）, upper limit bar（5）, spring（6）, lower limit bar（7）It is sequentially connected with wedge assemblies；Upper limit bar（5）With cover plate
（1）By screw（4）Connection, wedge assemblies and outer barrel（2）Interior chute contact；
The wedge assemblies are by voussoir（8）, rolling bearing（9）With heart axle（10）Composition；Rolling bearing（9）By heart axle
（10）It is fixed on voussoir（8）On, wedge assemblies pass through rolling bearing（9）With outer barrel（2）Interior chute contact.On wedge assemblies not
Concentric shafts（10）On rolling bearing（9）Between stagger installation, rolling bearing（9）It is arranged symmetrically.
The constant force component is by roller assembly and curved surface push rod（11）Composition；Roller assembly and curved surface push rod（11）Curved surface
Contact；Roller assembly is arranged on base plate（3）On, roller assembly is contacted with wedge assemblies, curved surface push rod（11）Through cover plate（1）In
The heart.
The roller assembly is by support frame（12）, rolling bearing（13）With heart axle（14）Composition；Rolling bearing passes through heart axle
It is fixed on support frame, roller assembly is by rolling bearing and curved surface push rod, voussoir and contacts baseplate.Decentraction on roller assembly
Axle（14）On rolling bearing（13）Between stagger installation, rolling bearing（13）It is arranged symmetrically.
Whole device is symmetric.During original state, two roller assembly contacts, curved surface push rod（11）With two rollers
Component is contacted simultaneously.Spring（6）There are certain precompressed, and precompressed length and bearing（13）Radius is equal, in order that spring is pre-
Pressure length is more accurate, by screw（4）It is finely adjusted.After the completion of precompressed, by curved surface push rod（11）Press down, make its contact bottom
Plate（3）, and by curved surface push rod（11）Upper end be applied component contact.When acting on curved surface push rod（11）The pressure of upper end is slightly
Reduce, curved surface push rod（11）Will up move, the constant force of setting is reached until being applied to the power being applied on part.
Such as Fig. 2（a）Constant force mechanisms structure diagram is shown, is made up of a circle and a curve, circle can only do water along x-axis
Flat motion, curve can only move up and down along y-axis.When circle is in position A, the stressing conditions of curve are as schemed（b）It is shown, and root
Relation according to active force and reaction force knows that suffered to make a concerted effort to be ∑ F, the component gone up in the horizontal direction is F, is vertically gone up
Component is FN；When circular motion is to position A ', it is ∑ F ', size and conjunction due to horizontal direction component F that what curve was subject to makes a concerted effort
The angle of power meets certain functional relation, makes the component vertically gone up still be FN, and be output by this masterpiece, reach
To constant force effect.
The overall structure figure of wedge assemblies is illustrated in figure 3, installed in decentraction axle（10）On rolling bearing（9）Between
Stagger installation, overall structure can be made compacter, rolling bearing（9）It is symmetrical on mid-plane so that overall structure stress
Situation is preferable.
The overall structure figure of roller assembly is illustrated in figure 4, installed in decentraction axle（14）On rolling bearing（13）It
Between stagger installation, overall structure can be made compacter, rolling bearing（13）It is symmetrical on mid-plane so that overall structure is received
Power situation is preferable.
Claims (4)
1. a kind of curved surface constant force mechanisms, it is characterised in that：It includes base assembly, thrust assemblies and constant force component；
The base assembly is by cover plate（1）, outer barrel（2）And base plate（3）Composition；Cover plate（1）, outer barrel（2）And base plate（3）It is solid successively
Even；
The thrust assemblies are by screw（4）, upper limit bar（5）, spring（6）, lower limit bar（7）Constituted with wedge assemblies；Screw
（4）, upper limit bar（5）, spring（6）, lower limit bar（7）It is sequentially connected with wedge assemblies；Upper limit bar（5）With cover plate（1）It is logical
Cross screw（4）Connection, wedge assemblies and outer barrel（2）Interior chute contact；
The wedge assemblies are by voussoir（8）, rolling bearing（9）With heart axle（10）Composition；Rolling bearing（9）By heart axle（10）Gu
It is scheduled on voussoir（8）On, wedge assemblies pass through rolling bearing（9）With outer barrel（2）Interior chute contact；
The constant force component is by roller assembly and curved surface push rod（11）Composition；Roller assembly and curved surface push rod（11）Curved surface connect
Touch；Roller assembly is arranged on base plate（3）On, roller assembly is contacted with wedge assemblies, curved surface push rod（11）Through cover plate（1）In
The heart；
The roller assembly is by support frame（12）, rolling bearing（13）With heart axle（14）Composition；Rolling bearing（13）By heart axle
（14）It is fixed on support frame（12）On, roller assembly passes through rolling bearing（13）With curved surface push rod（8）, voussoir（9）And base plate（3）
Contact.
2. curved surface constant force mechanisms according to claim 1, it is characterised in that：Decentraction axle on wedge assemblies（10）On rolling
Dynamic bearing（9）Between stagger installation, rolling bearing（9）It is arranged symmetrically.
3. curved surface constant force mechanisms according to claim 1, it is characterised in that：Decentraction axle on roller assembly（14）On rolling
Dynamic bearing（13）Between stagger installation, rolling bearing（13）It is arranged symmetrically.
4. curved surface constant force mechanisms according to claim 1, it is characterised in that：Thrust assemblies are identical with constant force component count,
At least two groups, and around curved surface push rod（11）Center line is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510197530.4A CN104820446B (en) | 2015-04-24 | 2015-04-24 | A kind of curved surface constant force mechanisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510197530.4A CN104820446B (en) | 2015-04-24 | 2015-04-24 | A kind of curved surface constant force mechanisms |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104820446A CN104820446A (en) | 2015-08-05 |
| CN104820446B true CN104820446B (en) | 2017-06-16 |
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ID=53730766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510197530.4A Expired - Fee Related CN104820446B (en) | 2015-04-24 | 2015-04-24 | A kind of curved surface constant force mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104820446B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105487563B (en) * | 2016-01-07 | 2018-04-20 | 四川大学 | A kind of adjustable constant force mechanisms |
| CN113154005B (en) * | 2021-04-23 | 2022-08-02 | 成都理工大学 | Adjustable constant force output mechanism of curved surface cam |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3276331B2 (en) * | 1998-03-13 | 2002-04-22 | 株式会社ミツトヨ | Constant pressure mechanism and constant torque mechanism |
| US6920936B2 (en) * | 2002-03-13 | 2005-07-26 | Schlumberger Technology Corporation | Constant force actuator |
| CN103438141A (en) * | 2013-09-03 | 2013-12-11 | 北京工业大学 | Adjustable constant force device |
| CN204650299U (en) * | 2015-04-24 | 2015-09-16 | 四川大学 | A kind of curved surface constant force mechanisms |
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2015
- 2015-04-24 CN CN201510197530.4A patent/CN104820446B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104820446A (en) | 2015-08-05 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170616 |