CN102305260B - Diaphragm type long-travel unidirectional spring mechanism - Google Patents
Diaphragm type long-travel unidirectional spring mechanism Download PDFInfo
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- CN102305260B CN102305260B CN 201110242073 CN201110242073A CN102305260B CN 102305260 B CN102305260 B CN 102305260B CN 201110242073 CN201110242073 CN 201110242073 CN 201110242073 A CN201110242073 A CN 201110242073A CN 102305260 B CN102305260 B CN 102305260B
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Abstract
The invention discloses a diaphragm type long-travel unidirectional spring mechanism, which is characterized by a diaphragm elastic device, a rigidity output end gear rack mechanism, a displacement amplifying mechanism and a working end gear rack mechanism, wherein the diaphragm elastic device provides elastic rigidity for the whole mechanism, and consists of supporting cylinders, an annular film belt, a tension device and a connector; not less than 2 cylinders are fixed on a cabinet and used for supporting the annular film belt; one end of the connector is linearly contacted with the annular film belt, and the other end of the connector is in rigid connection with a rack; the rigidity output end gear rack mechanism consists of a gear rack mechanism, a rack is connected with a rigidity output connector, and the bottom of the rack is provided with guide rollers connected with the cabinet body; the displacement amplifying mechanism is a planet gear speed increaser, or a cylindrical gear speed increaser; and the working end gear rack mechanism is used for converting rotary displacement into linear displacement. The structure is a unidirectional long-travel spring; moreover, an analytic expression can be provided for an elastic change curve of the spring, which is important for a design requiring accurate elastic change.
Description
Technical field
The present invention relates to the unidirectional spring mechanism of mechanical field.
Background technique
Spring is by in widely utilization and mechanical engineering and the structural engineering.Simple form of springs has helical spring, torsion spring, leaf spring.Dish spring etc.The function of this class spring is simple, can not satisfy the demand of some engineerings fully.For some special demand, often need to realize with mechanism or structure the function of spring.Such as unidirectional spring, this class spring only provides the function of spring in a direction, and the rigidity of other both direction is relatively very large.As mechanically adopting the helical spring outside is added a rigidity overcoat or the helical spring inboard is added a rigid liner realization unidirectional spring, such as " rigidity variable elastic system simulating device " (ZL200410093082.5).For another example: some bearings that adopt in the building structure, adopt one deck steel plate one deck rubber this " multi-layer steamed bread " formula structure to realize unidirectional spring, such as " becoming stiffness tuning type rubber vibration isolator " (ZL200720076571.9).But the stroke of this class spring is less.On the other hand, existing unidirectional spring is owing to the problem of its structure self and preparation process, and its elasticity coefficient curve is difficult to design.The present invention is directed to the programmable requirement of large stroke unidirectional spring and elasticity coefficient thereof proposes.Proposing purpose is for seawave power generation, also can be used for having machinery and the structure of related request.
Summary of the invention
The purpose of this invention is to provide a kind of
Diaphragm type long-travel unidirectional spring mechanism is characterized in that:Comprise the membrane type elastic device, rigidity gear of output end rackwork, displacement amplifying mechanism and working end pinion and rack;
The membrane type elastic device provides elastic stiffness for whole mechanism, it is comprised of support cylinder, annular membrane band, tension device and connector, cylinder is no less than 2, cylinder is fixed on the cabinet, be used for supporting the ring-type film strip, connector one end contacts with the annular membrane band is linear, and the tooth bar of the other end and rigidity gear of output end rackwork is rigidly connected;
The effect of rigidity gear of output end rackwork is that the linear displacement with the film strip lateral deformation is converted to rotation displacement, be beneficial to the capable amplification of contraposition shift-in, it is comprised of pinion and rack, and tooth bar is connected with the connector of rigidity output, its bottom is provided with deflector roll, and deflector roll is connected with casing;
The effect of displacement amplifying mechanism is the displacement that the effect of amplification power produces, and it is planet gear speed increaser, also can adopt the cylindrical gears speed increaser;
The effect of working end pinion and rack is that swing offset is converted to straight-line displacement, and it is comprised of pinion and rack and deflector roll, and the gear transmission of pinion and rack is in the driving shaft of speed increaser.
Aforesaid
Diaphragm type long-travel unidirectional spring mechanism is characterized in that:The rigidity that a connector is used for delivery spring is respectively established at two ends in rigidity output, and formation is arranged symmetrically with.Be arranged symmetrically with the rigidity that can guarantee symmetrical balance and increase spring output.
Aforesaid
Diaphragm type long-travel unidirectional spring mechanism is characterized in that:Described planet gear speed increaser, it is by driving shaft, sun gear, internal gear, planetary pinion, planet pin, planet carrier, driven shaft forms, and driven shaft one end is connected by the IV key with the gear of rigidity gear of output end rackwork, and the other end is connected with planet carrier by the III key.
The invention has the beneficial effects as follows: this structure can provide the spring of large stroke, and moving direction only has one, and the rigidity of other both direction is much larger than the rigidity of moving direction, can guarantee not move.The Flexible change curve of spring can provide analytic expression simultaneously, is very important for requiring Flexible change to design accurately.
Below in conjunction with the description of drawings specific embodiments of the invention.
Description of drawings
Fig. 1 membrane type spring principle figure.
Fig. 2 elasticity coefficient curve.
Fig. 3 diaphragm type long-travel unidirectional spring structural front view.
Fig. 4 diaphragm type long-travel unidirectional spring structure A-A view.
Fig. 5 diaphragm type long-travel unidirectional spring structure B-B view.
Fig. 6 diaphragm type long-travel unidirectional spring structure C-C view.
Fig. 7 diaphragm type long-travel unidirectional spring structure D-D view.
Fig. 8 connector construction figure.
Embodiment
The explanation of mark among Fig. 3: the two-sided rack 1, the two-sided rack deflector roll 2, cabinet 3, driving shaft 4, working gear 5, internal gear 6, planetary pinion 7, planet pin 8, sun gear 9, planet carrier 10, annular membrane band 11, cylinder 12, gear 13, driven shaft 14, cover plate 15, tooth bar 16.
The explanation of mark among Fig. 4-Fig. 7: I key 17, II key 18, III key 19, deflector roll 20, connector 21, screw rod 22, self-locking nut 23, IV key 24.
Inventive principle: as shown in Figure 1, external force F effect is lower, and the film strip that is supported by cylinder deforms, and produces elastic restoring force.Elastic restoring force and film strip lateral deformation δ Relations Among are:
1
In the formula: T
0Be the initial tension on the film, A is the cross-section area of film, and E is the Young's modulus of film, and δ is film lateral deformation amount, and L is the spacing of film rigidity output terminal support cylinder, L
0Be the former length of film strip, F puts on the horizontal power of film.
[0019]Fig. 2 has provided the relation curve of three groups of elastic restoring forces and distortion, i.e. elasticity coefficient curve.Initial tension T in three curve membrane removals among the figure
0Outside the difference, all the other each parameters are all identical.As seen from the figure, the type spring is nonlinear spring in the large deformation situation, but its relation can directly provide its analytic expression, is convenient to design utilization.In the small deformation situation, such spring can be considered Hookean spring, and the initial tensioning force on the film can directly change the rigidity of spring.Directly less by the distortion of film strip generation, in order to obtain larger deformation stroke, can be by displacement amplifying mechanism be realized.
The present invention is comprised of four parts: membrane type elastic device, rigidity gear of output end rackwork, displacement amplifying mechanism and working end pinion and rack.
The membrane type elastic device provides elastic stiffness for whole mechanism, and it is comprised of support cylinder 12, annular membrane band 11, tension device and connector 21.Support cylinder 12 is no less than 2, has adopted nine in the present embodiment, and cylinder is fixed on the cabinet 3, is used for supporting ring-type film strip 11.The number of cylinder 12 is more, and the annular membrane band 11 that then can support is longer; Cylinder 12 spacings of rigidity output terminal directly affect the output rigidity of spring.The annular membrane 11 that is supported by cylinder 11 is in advance tensioning state.Respectively establish the rigidity that a connector 21 is used for delivery spring at the two ends of rigidity output.Be arranged symmetrically with the rigidity that can guarantee symmetrical balance and increase spring output.Connector 21 1 ends and film strip 11 linear contacts, the other end and tooth bar 16 are rigidly connected.Tension device is comprised of self-locking nut 23, screw rod 22 and connector 21 and cover plate 15.Connector 21 1 ends contact with film strip 11 lines, and the other end is connected with screw rod 22.Screw rod passes the hole on the cover plate, is connected with nut 23.Cover plate 15 is fixed on the cabinet.When the film strip tension force is not enough or film strip when lax, can regulate by self-locking nut the tightness of film strip, the rigidity of inching membrane type spring is to adapt to designing requirement.
The effect of rigidity gear of output end rackwork is that the linear displacement with the film strip lateral deformation is converted to rotation displacement, is beneficial to the capable amplification of contraposition shift-in.It is comprised of pinion and rack.Tooth bar 16 is connected with the connector 21 of rigidity output, and its bottom is provided with deflector roll 20, and deflector roll is connected with casing, guarantees that the motion of above-below direction does not occur tooth bar.Tooth bar 16 is connected with a joggle with gear 13.Gear 13 is connected with the driven shaft 14 of speed increaser by IV key 24.
The effect of displacement structure for amplifying is the displacement that the effect of amplification power produces, and it is comprised of speed increaser, can be planet gear speed increaser, also can adopt the cylindrical gears speed increaser.Adopt planet gear speed increaser in this example.It is by driving shaft 4, sun gear 9, internal gear 6, planet pin 8, planet wheel 7, planet carrier 10, and driven shaft 14 forms.Driven shaft one end is connected by IV key 24 with the gear 13 of rigidity gear of output end rackwork, and the other end is connected with planet carrier 10 by III key 19.Planet sets up bearing support and is connected with planet wheel shaft 8, and planetary pinion 7 is installed on the planet wheel shaft 8.Planetary pinion and sun gear engagement drive the sun gear rotation.Sun gear is connected with driving shaft 4 by II key 18.Driving shaft 4 the other ends are connected by I key 17 with the gear 5 of working gear rackwork.
The effect of working end pinion and rack is that swing offset is converted to straight-line displacement, and it is comprised of pinion and rack and deflector roll, guarantees that tooth bar only moves along a direction.Working gear 5 and the two-sided rack 1 are by being connected with a joggle, and the two-sided rack both sides are provided with deflector roll 2 restriction tooth bars 1 along side-to-side movement, form unidirectional spring.
Its working method is: when receiving the power of above-below direction in the two-sided rack 1 lower end, the two-sided rack moves up and down.This Sports band is started building to do gear 5 generations and is rotatablely moved.Gear 5 drives driving shaft 4 rotations by I key 17, and driving shaft 4 drives sun gear 9 rotations by II key 18.Sun gear 9 drives planetary pinion 7 by engagement and produces motion, and planetary pinion 7 drives planet carrier 10 and rotates.Planet carrier drives driven shaft 14 by III key 19 and rotates.Driven shaft 14 produces by IV key 24 driven gears 13 and rotatablely moves, and produces with tooth bar 16 engagement band carry-over bars 16 by gear 13 to seesaw.Tooth bar 16 is connected with connector 21, transfers the motion to film strip.Film strip laterally deforms, and resists the motion of transmitting thereby produce elastic restoring force.Thereby form the effect of large stroke unidirectional spring.
Advantage of the present invention is the spring that this structure can provide large stroke, and moving direction only has one, and the rigidity of other both direction is much larger than the rigidity of moving direction, can guarantee not move.The Flexible change curve of spring can provide analytic expression simultaneously, is very important for requiring Flexible change to design accurately.
Use: the present invention can be applicable to substitute in the CN201110186182.2 gravity balancer its spring assembly.The structure that forms than helical spring has the following advantages; Reduced widely the size of spring; Effectively overcome the weak shortcoming of substantially horizontal rigidity, guaranteed that motion accurately; Can provide accurately elastic deformation coefficient, be convenient to the equilibrium orbit design.
Embodiment in the embodiment just realizes the part example of claim technological scheme of the present invention; the guide that technological thought and embodiment by in full statement provides, the various deformation of doing in conjunction with the general knowledge of the art all should be included in protection scope of the present invention.
Claims (3)
1.
Diaphragm type long-travel unidirectional spring mechanism is characterized in that:Comprise the membrane type elastic device, rigidity gear of output end rackwork, displacement amplifying mechanism and working end pinion and rack;
The membrane type elastic device provides elastic stiffness for whole mechanism, it is comprised of support cylinder (12), annular membrane band (11), tension device and connector (21), cylinder (12) is no less than 2, cylinder is fixed on the cabinet (3), be used for supporting ring-type film strip (11), connector (21) one ends contact with annular membrane band (11) is linear, and the tooth bar (16) of the other end and rigidity gear of output end rackwork is rigidly connected;
The effect of rigidity gear of output end rackwork is that the linear displacement with the film strip lateral deformation is converted to rotation displacement, be beneficial to the capable amplification of contraposition shift-in, it is comprised of pinion and rack, tooth bar (16) is connected with the connector (21) of rigidity output, its bottom is provided with deflector roll (20), and deflector roll is connected with casing;
The effect of displacement amplifying mechanism is the displacement that the effect of amplification power produces, and it is planet gear speed increaser, or the cylindrical gears speed increaser;
The effect of working end pinion and rack is that swing offset is converted to straight-line displacement, and it is comprised of pinion and rack and deflector roll, and the gear transmission of pinion and rack is in the driving shaft of speed increaser.
2. as claimed in claim 1
Diaphragm type long-travel unidirectional spring mechanism is characterized in that:The rigidity that a connector (21) is used for delivery spring is respectively established at two ends in rigidity output, and formation is arranged symmetrically with.
3. as claimed in claim 1 or 2
Diaphragm type long-travel unidirectional spring mechanism is characterized in that:Described planet gear speed increaser, it is by driving shaft (4), sun gear (9), internal gear (6), planetary pinion (7), planet pin (8), planet carrier (10) and driven shaft (14) form, driven shaft one end is connected by IV key (24) with the gear (13) of rigidity gear of output end rackwork, and the other end is connected with planet carrier (10) by III key (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110242073 CN102305260B (en) | 2011-08-23 | 2011-08-23 | Diaphragm type long-travel unidirectional spring mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110242073 CN102305260B (en) | 2011-08-23 | 2011-08-23 | Diaphragm type long-travel unidirectional spring mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN102305260A CN102305260A (en) | 2012-01-04 |
| CN102305260B true CN102305260B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110242073 Expired - Fee Related CN102305260B (en) | 2011-08-23 | 2011-08-23 | Diaphragm type long-travel unidirectional spring mechanism |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105840915B (en) * | 2016-05-25 | 2019-02-01 | 江苏焱鑫科技股份有限公司 | Small volume large displacement constant force spring hanging frame |
| CN110681701B (en) * | 2019-10-09 | 2020-10-02 | 河南理工大学 | Nonlinear energy trap device adopting mechanical spring to change rigidity |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4140865C2 (en) * | 1990-12-25 | 2003-07-03 | Nissan Motor | Transmission with infinitely variable speed change |
| CN1621804A (en) * | 2004-12-16 | 2005-06-01 | 上海交通大学 | Rigidity variable elastic system simulating device |
| CN201096160Y (en) * | 2007-11-09 | 2008-08-06 | 中国船舶重工集团公司第七一一研究所 | Rigidity-changing regulation type rubber vibration isolator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6932739B2 (en) * | 2001-12-25 | 2005-08-23 | Nsk Ltd. | Continuously variable transmission apparatus |
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2011
- 2011-08-23 CN CN 201110242073 patent/CN102305260B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4140865C2 (en) * | 1990-12-25 | 2003-07-03 | Nissan Motor | Transmission with infinitely variable speed change |
| CN1621804A (en) * | 2004-12-16 | 2005-06-01 | 上海交通大学 | Rigidity variable elastic system simulating device |
| CN201096160Y (en) * | 2007-11-09 | 2008-08-06 | 中国船舶重工集团公司第七一一研究所 | Rigidity-changing regulation type rubber vibration isolator |
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| CN102305260A (en) | 2012-01-04 |
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