CN204650299U - A kind of curved surface constant force mechanisms - Google Patents
A kind of curved surface constant force mechanisms Download PDFInfo
- Publication number
- CN204650299U CN204650299U CN201520252012.3U CN201520252012U CN204650299U CN 204650299 U CN204650299 U CN 204650299U CN 201520252012 U CN201520252012 U CN 201520252012U CN 204650299 U CN204650299 U CN 204650299U
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- rolling bearing
- curved surface
- constant force
- assembly
- axle
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Abstract
The utility model provides a kind of curved surface constant force mechanisms, and this mechanism is made up of base assembly, thrust assemblies and constant force assembly; Described base assembly is made up of cover plate, urceolus and base plate, and each several part is connected successively; Described thrust assemblies is made up of screw, upper limit bar, spring, lower limit bar and wedge assemblies, and each several part connects successively; Described wedge assemblies is made up of voussoir, rolling bearing and axle, and rolling bearing is arranged on voussoir by axle; Thrust assemblies is arranged in base assembly; Described constant force assembly is made up of roller assembly and curved surface push rod, and roller assembly contacts with curved surface push rod; Described roller assembly is made up of bracing frame, rolling bearing and axle, and rolling bearing is arranged on voussoir by axle; Constant force assembly is arranged in base assembly, and contacts with thrust assemblies.The utility model has that volume is little, structure is simple, reliability is high, by the advantage of installation site restriction.
Description
Technical field
The utility model relates to a kind of constant force load maintainer, particularly relates to a kind of curved surface constant force mechanisms.
Background technology
Constant force mechanisms is used widely at numerous areas, as coil paper, material test, space equipment, thermal power generation etc., has material impact to the safety and reliability of equipment.And the method for the constant force that can obtain at present has: Mechatronics control, the methods such as gravitational equilibrium.Mechatronics control can the accurate control of realizable force by retroactive effect, but generally this structure is comparatively complicated, volume is comparatively large, reliability is not high.The gravity that gravitational equilibrium method is subject to by weight, as the input of constant force, can obtain very high precision, but this device requires higher to installation site, is difficult to meet practical application condition.
Utility model content
The purpose of this utility model is to overcome existing constant force mechanisms above shortcomings, provides the curved surface constant force mechanisms that a kind of volume is little, structure is simple, reliability is high.
The utility model by the following technical solutions.
Curved surface constant force mechanisms of the present utility model is made up of base assembly, thrust assemblies and constant force assembly:
1) described base assembly is made up of cover plate, urceolus and base plate; Cover plate, urceolus and base plate are connected successively;
2) described thrust assemblies is made up of screw, upper limit bar, spring, lower limit bar and wedge assemblies; Screw, upper limit bar, spring, lower limit bar are connected successively with wedge assemblies; Upper limit bar and cover plate are connected by screw, and wedge assemblies contacts with the chute in urceolus; Described wedge assemblies is made up of voussoir, rolling bearing and axle; Rolling bearing is fixed on voussoir by axle, and wedge assemblies is contacted with the chute in urceolus by rolling bearing;
3) described constant force assembly 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 roller assembly contacts with wedge assemblies, and curved surface push rod is through cover plate central; Described roller assembly is made up of bracing frame, rolling bearing and axle; Rolling bearing is fixed on bracing frame by 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 in different axle, rolling bearing is arranged symmetrically with, and make one-piece construction compacter, stressing conditions is better.
In such scheme, installation of staggering between the rolling bearing on roller assembly in different axle, rolling bearing is arranged symmetrically with, and make one-piece construction compacter, stressing conditions is better.
In such scheme, thrust assemblies is identical with constant force component count, is at least two groups, and is uniformly distributed round curved surface push rod center line.
It is power decomposition principle that the utility model constant force realizes principle.Specific implementation: the power that spring produces is applied to the roller on roller assembly, the curved face contact of roller and curved surface push rod, roller with roller assembly in the process away from the movement of base plate center, spring is compressed, the power of spring action on roller increases on the one hand, and the slope of roller and curved face contact point increases on the other hand, and final effect is that the acting force between roller and inclined-plane is being remained unchanged perpendicular to the component on roller movement direction, and by this masterpiece for exporting, thus realize constant force.
The beneficial effects of the utility model are: 1. the utility model adopts pure physical construction, and reliability is high; 2. adopt power decomposition principle, Principles and methods is simple, and organization volume is reduced; 3. not produce constant force by gravity, not by the restriction of installation site.
Accompanying drawing explanation
Fig. 1 is the main cut-open view of curved surface constant force mechanisms.
Fig. 2 is the structure diagram of constant force mechanisms.
Fig. 3 is the one-piece construction figure of wedge assemblies.
Fig. 4 is the one-piece construction figure of roller assembly.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model provides a kind of version of embodiment, and in the present embodiment, constant force mechanisms is important comprises base assembly, thrust assemblies and constant force assembly;
Described base assembly is made up of cover plate (1), urceolus (2) and base plate (3); Cover plate (1), urceolus (2) and base plate (3) are connected successively;
Described thrust assemblies is made up of screw (4), upper limit bar (5), spring (6), lower limit bar (7) and wedge assemblies; Screw (4), upper limit bar (5), spring (6), lower limit bar (7) are connected successively with wedge assemblies; Upper limit bar (5) is connected by screw (4) with cover plate (1), and wedge assemblies contacts with the chute in urceolus (2);
Described wedge assemblies is made up of voussoir (8), rolling bearing (9) and axle (10); Rolling bearing (9) is fixed on voussoir (8) by axle (10), and wedge assemblies is contacted with the chute in urceolus (2) by rolling bearing (9).Stagger between rolling bearing (9) on wedge assemblies in different axle (10) installation, rolling bearing (9) is arranged symmetrically with.
Described constant force assembly is made up of roller assembly and curved surface push rod (11); The curved face contact of roller assembly and curved surface push rod (11); Roller assembly is arranged on base plate (3), and roller assembly contacts with wedge assemblies, and curved surface push rod (11) is through cover plate (1) center.
Described roller assembly is made up of bracing frame (12), rolling bearing (13) and axle (14); Rolling bearing is fixed on bracing frame by axle, and roller assembly is by rolling bearing and curved surface push rod, voussoir and contacts baseplate.Stagger between rolling bearing (13) on roller assembly in different axle (14) installation, rolling bearing (13) is arranged symmetrically with.
Whole device is symmetric.During original state, two roller assembly contacts, curved surface push rod (11) contacts with two roller assemblies simultaneously.Spring (6) has certain precompressed, and precompressed length is equal with bearing (13) radius, in order to make the precompressed length of spring comparatively accurate, is finely tuned by screw (4).After precompressed completes, by curved surface push rod (11) toward pressing down, make it contact base plate (3), and by curved surface push rod (11) upper end be applied component contact.When the slight pressure acting on curved surface push rod (11) upper end reduces, curved surface push rod (11) will up move, until be applied to the constant force that the power be applied on parts reaches setting.
Be constant force mechanisms structure diagram as shown in Figure 2 (a) shows, be made up of a circle and a curve, circle can only do tangential movement along x-axis, and curve can only move up and down along y-axis.When circle is in position A, the stressing conditions of curve as shown in figure (b), and is known according to the relation of acting force and reacting force, and suffered making a concerted effort is ∑ F, and the component gone up in the horizontal direction is F, and the component vertically gone up is F
n; When circular motion is to position A ', what curve was subject to makes a concerted effort for ∑ F ', because the size of horizontal direction component F meets certain funtcional relationship with the angle of making a concerted effort, makes the component vertically gone up still be F
n, and by this masterpiece for exporting, reach constant force effect.
Be illustrated in figure 3 the one-piece construction figure of wedge assemblies, be arranged on installation of staggering between the rolling bearing (9) in different axle (10), one-piece construction can be made compacter, and rolling bearing (9) is symmetrical about mid-plane, makes one-piece construction stressing conditions better.
Be illustrated in figure 4 the one-piece construction figure of roller assembly, be arranged on installation of staggering between the rolling bearing (13) in different axle (14), one-piece construction can be made compacter, and rolling bearing (13) is symmetrical about mid-plane, makes one-piece construction stressing conditions better.
Claims (4)
1. a curved surface constant force mechanisms, is characterized in that: it comprises base assembly, thrust assemblies and constant force assembly;
Described base assembly is made up of cover plate (1), urceolus (2) and base plate (3); Cover plate (1), urceolus (2) and base plate (3) are connected successively;
Described thrust assemblies is made up of screw (4), upper limit bar (5), spring (6), lower limit bar (7) and wedge assemblies; Screw (4), upper limit bar (5), spring (6), lower limit bar (7) are connected successively with wedge assemblies; Upper limit bar (5) is connected by screw (4) with cover plate (1), and wedge assemblies contacts with the chute in urceolus (2);
Described wedge assemblies is made up of voussoir (8), rolling bearing (9) and axle (10); Rolling bearing (9) is fixed on voussoir (8) by axle (10), and wedge assemblies is contacted with the chute in urceolus (2) by rolling bearing (9);
Described constant force assembly is made up of roller assembly and curved surface push rod (11); The curved face contact of roller assembly and curved surface push rod (11); Roller assembly is arranged on base plate (3), and roller assembly contacts with wedge assemblies, and curved surface push rod (11) is through cover plate (1) center;
Described roller assembly is made up of bracing frame (12), rolling bearing (13) and axle (14); Rolling bearing (13) is fixed on bracing frame (12) by axle (14), and roller assembly is contacted with base plate (3) with curved surface push rod (8), voussoir (9) by rolling bearing (13).
2. curved surface constant force mechanisms according to claim 1, is characterized in that: installation of staggering between the rolling bearing (9) on wedge assemblies in different axle (10), rolling bearing (9) is arranged symmetrically with.
3. curved surface constant force mechanisms according to claim 1, is characterized in that: installation of staggering between the rolling bearing (13) on roller assembly in different axle (14), rolling bearing (13) is arranged symmetrically with.
4. curved surface constant force mechanisms according to claim 1, is characterized in that: thrust assemblies is identical with constant force component count, is at least two groups, and is uniformly distributed round curved surface push rod (11) center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520252012.3U CN204650299U (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 |
|---|---|---|---|
| CN201520252012.3U CN204650299U (en) | 2015-04-24 | 2015-04-24 | A kind of curved surface constant force mechanisms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204650299U true CN204650299U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520252012.3U Withdrawn - After Issue CN204650299U (en) | 2015-04-24 | 2015-04-24 | A kind of curved surface constant force mechanisms |
Country Status (1)
| Country | Link |
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| CN (1) | CN204650299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820446A (en) * | 2015-04-24 | 2015-08-05 | 四川大学 | Curved surface constant-force mechanism |
-
2015
- 2015-04-24 CN CN201520252012.3U patent/CN204650299U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820446A (en) * | 2015-04-24 | 2015-08-05 | 四川大学 | Curved surface constant-force mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150916 Effective date of abandoning: 20170616 |