CN111350786A - One-way adjustable large-torque rotary variable damper - Google Patents
One-way adjustable large-torque rotary variable damper Download PDFInfo
- Publication number
- CN111350786A CN111350786A CN202010282989.5A CN202010282989A CN111350786A CN 111350786 A CN111350786 A CN 111350786A CN 202010282989 A CN202010282989 A CN 202010282989A CN 111350786 A CN111350786 A CN 111350786A
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- China
- Prior art keywords
- lead screw
- way bearing
- end cover
- retainer ring
- friction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/02—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together
- F16F7/023—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together and characterised by damping force adjustment means
- F16F7/026—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together and characterised by damping force adjustment means resulting in the damping effects being different according to direction of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/04—Friction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/0005—Attachment, e.g. to facilitate mounting onto confer adjustability
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2232/00—Nature of movement
- F16F2232/02—Rotary
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention relates to the technical field of rotary dampers, in particular to a one-way adjustable large-torque rotary variable damper, wherein a lead screw is arranged in a shell in a penetrating way, a one-way bearing assembly is sleeved on the lead screw positioned in a left cavity, a friction plate is fixedly arranged on the right side surface of a friction end cover, a wearing plate is fixedly arranged on the left side surface of the one-way bearing assembly, a distance is reserved between the friction plate and the wearing plate, an auxiliary pressure spring is sleeved on the lead screw positioned between the friction end cover and the one-way bearing assembly, a nut in threaded fit with the lead screw positioned in a right cavity is arranged on the lead screw positioned in the right cavity, a main pressure spring is sleeved on the lead screw positioned between the one-way bearing assembly and the nut, a convex block which is matched with a long sliding groove and moves in the long sliding groove is arranged on the nut, the rotary lead screw can rotate for multiple circles, can provide big moment of torsion output, the total number of turns of rotation can finely tune, and occupation space is littleer.
Description
Technical Field
The invention relates to the technical field of rotary dampers, in particular to a unidirectional adjustable large-torque rotary variable damper.
Background
At present, the rotary dampers on the market are various in types, and there are torsion spring type rotary dampers, dampers designed by using damping medium or damping oil, and constant dampers designed by using friction plates.
The existing rotary damper has the following defects:
a) the damper using the damping medium or the damping oil provides smaller damping torque, can only be suitable for the rotary damping of medium and small parts, and is mostly a single-ring damper.
b) The rotary damper realized by the torsion spring is difficult to realize large-torque damping and multi-turn damping in a limited space.
c) Dampers designed using friction plates are either constant dampers or adjustable constant damping, and cannot provide variable damping.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the one-way large-torque variable damper is provided, the damping is increased along with the increase of the number of rotation turns, the rotating speed of a rotating piece can be finally reduced to 0, and the fine adjustment can be realized by the total number of rotation turns from the high rotating speed reduction to the rotating speed of 0.
The technical scheme adopted by the invention for solving the technical problems is as follows: a unidirectional adjustable large-torque rotary variable damper comprises a shell and a lead screw, wherein a friction end cover matched with the shell is arranged on the left side of the shell, a bearing end cover matched with the shell is arranged on the right side of the shell, a bulge for dividing an inner cavity of the shell into a left inner cavity and a right inner cavity is arranged on the inner wall of the right inner cavity of the shell, long chutes are symmetrically arranged on the inner wall of the bulge facing to the left inner cavity, short chutes are symmetrically arranged on the inner wall of the bulge facing to the left inner cavity, the lead screw penetrates through the shell, a unidirectional bearing assembly is sleeved on the lead screw positioned in the left cavity, the unidirectional bearing assembly and the lead screw move relatively and cannot rotate relatively, a friction plate is fixedly arranged on the right side surface of the friction end cover, the friction plate is of an annular structure and is coaxial with the lead screw, a wear plate is fixedly arranged on, be located and be equipped with on the lead screw of right side cavity rather than screw-thread fit's nut, the cover is equipped with main pressure spring on the lead screw between one-way bearing subassembly and the nut, is equipped with on the nut with long spout cooperation and the lug that removes in long spout, cause the nut to remove in the casing only, can not rotate, consequently, drive the nut through rotating the lead screw and remove.
Furthermore, the one-way bearing assembly comprises a sliding shaft sleeve, a retainer ring and a one-way bearing sleeve, the sliding shaft sleeve is connected with the screw rod bracket through a key, so that torque is transmitted between the sliding shaft sleeve and the screw rod, meanwhile, relative movement is achieved between the sliding shaft sleeve and the lead screw, a one-way bearing is arranged between the sliding shaft sleeve and the one-way bearing sleeve, a check ring is sleeved on the head portion of the right end of the sliding shaft sleeve, a limiting lug matched with the short sliding groove is arranged on the check ring, the check ring can only move in the shell and cannot rotate, relative rotation movement exists between the check ring and the sliding shaft sleeve, a wear plate is fixedly mounted on the left side face of the one-way bearing sleeve, the wear plate rotates clockwise and synchronously with the lead screw through the one-way bearing sleeve, and when the lead screw rotates anticlockwise, the wear plate rotates relative to the lead screw and is of an annular structure and coaxial with the one-way bearing sleeve.
Furthermore, convex keys are symmetrically arranged in the inner cavity of the sliding shaft sleeve, a first retainer ring annular groove, a key groove and a step boss are sequentially arranged on the outer surface of the sliding shaft sleeve from left to right, an axial elastic retainer ring is arranged in the retainer ring annular groove, and the one-way bearing is fixedly arranged on the sliding shaft sleeve through the keys and the key groove.
Further, be equipped with the arch that the integration set up on the inner chamber wall of casing, the arch is the step cover that "L" type for transverse cross-sectional shape, sets up the long spout that the symmetry set up on the inner wall of step cover, has seted up short spout on the inner wall of step cover orientation left side inner chamber, is perpendicular setting between long spout and the short spout.
Further, bearings are arranged among the friction end cover, the bearing end cover and the lead screw, and bearing small end covers are fixedly mounted on the side edges of the friction end cover and the bearing end cover.
Furthermore, a second retainer ring annular groove is formed in the inner wall of the one-way bearing sleeve, which is close to the retainer ring, and a hole elastic retainer ring is clamped in the second retainer ring annular groove.
Furthermore, a spacer bush is arranged between the sliding shaft sleeve and the retainer ring.
The invention has the beneficial effects that: in the limited space, the rotary screw rod can rotate for multiple circles, the damping is continuously increased along with the increase of the number of the rotating circles, the damping force can be finely adjusted, one-way variable damping is provided when the rotary screw rod rotates for multiple circles finally, the rotating speed of the rotary screw rod is gradually reduced, the final rotating speed is reduced to 0, the speed reduction process of the rotary screw rod is more stable, large torque output can be provided, the number of the rotating circles can be finely adjusted, and the occupied space is smaller.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a schematic structural view of the housing of the present invention;
fig. 5 is a schematic structural view of the sleeve according to the present invention.
In the figure: 1. the novel bearing comprises a shell, 2 parts of a friction end cover, 3 parts of a lead screw and nut pair, 4 parts of a one-way bearing assembly, 5 parts of a friction plate, 6 parts of a main pressure spring, 7 parts of an auxiliary pressure spring, 8 parts of a lead screw, 9 parts of a bearing, 10 parts of a nut, 11 parts of a retaining ring, 12 parts of a sliding shaft sleeve, 13 parts of a one-way bearing, 14 parts of a one-way bearing sleeve, 15 parts of a wear plate, 16 parts of a bearing end cover, 17 parts of a bearing small end cover, 18 parts of a bulge, 19 parts of a long sliding chute, 20 parts of a short sliding chute, 21 parts of a convex key, 22 parts of a key groove, 23 parts of a step boss, 24 parts of a first retaining ring groove, 25 parts of a shaft elastic retaining ring, 26 parts of a second.
Detailed Description
The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in figures 1-5, the unidirectional adjustable large-torque rotary variable damper comprises a shell 1 and a lead screw 8, wherein a friction end cover 2 matched with the shell 1 is arranged on the left side of the shell 1, a bearing end cover 16 matched with the shell 1 is arranged on the right side of the shell 1, a bulge 18 for dividing the inner cavity of the shell 1 into a left inner cavity and a right inner cavity is arranged on the inner wall of the shell 1, long sliding grooves 19 are symmetrically arranged on the wall of the inner cavity on the right side of the shell 1, short sliding grooves 20 are symmetrically arranged on the inner wall of the bulge 18 facing to the left inner cavity,
a lead screw 8 penetrates through the shell 1, a one-way bearing assembly 4 is sleeved on the lead screw 8 positioned in the left cavity, relative movement is realized between the one-way bearing assembly 4 and the lead screw, relative rotation cannot be realized, a friction plate 5 is fixedly arranged on the right side surface of the friction end cover 2, the friction plate is of an annular structure and is coaxial with the lead screw 8, a wear plate 15 is fixedly arranged on the left side surface of the one-way bearing assembly 4, a distance is reserved between the friction plate 5 and the wear plate 15, an auxiliary pressure spring 7 is sleeved on the lead screw 8 between the friction end cover 2 and the one-way bearing,
the screw 8 located in the right cavity is provided with a nut 10 in threaded fit with the screw 8, the screw 8 between the one-way bearing assembly 4 and the nut 10 is sleeved with a main pressure spring 6, and the nut 10 is provided with a bump 29 which is matched with the long chute 19 and moves in the long chute 19, so that the nut can only move in the shell and cannot rotate, and therefore, the screw 8 is rotated to drive the nut 10 to move.
The lead screw 8 is divided into a long-step light shaft portion, a middle thread portion and a short-step light shaft portion, the long-step light shaft portion of the lead screw 8 is located in the left inner cavity of the housing 1, and the middle thread portion of the lead screw 8 is located in the right inner cavity of the housing 1.
The one-way bearing assembly 4 comprises a sliding shaft sleeve 12, a check ring 11 and a one-way bearing sleeve 14, wherein the sliding shaft sleeve 12 is in key connection with a lead screw 8 bracket through a key connection, so that torque transmission is realized between the sliding shaft sleeve 12 and the lead screw 8, meanwhile, relative movement is realized between the sliding shaft sleeve 12 and the lead screw 8, a one-way bearing 13 is arranged between the sliding shaft sleeve 12 and the one-way bearing sleeve 14, the check ring 11 is sleeved at the head part at the right end of the sliding shaft sleeve 12, a limiting lug 28 matched with a short chute 20 is arranged on the check ring 11, so that the check ring 11 can only move in the shell 1 and can not rotate, relative rotation motion exists between the check ring 11 and the sliding shaft sleeve 12, a wear plate 15 is fixedly arranged on the left side surface of the one-way bearing sleeve 14, the wear plate 15 rotates clockwise synchronously with the lead screw 8 through the one-way bearing sleeve 14 and the one, and the wearing plate 15 is of an annular structure and is coaxial with the one-way bearing sleeve 14.
The inner cavity of the sliding shaft sleeve 12 is symmetrically provided with convex keys 21, the outer surface of the sliding shaft sleeve 12 is sequentially provided with a first retainer ring groove 24, a key groove 22 and a step boss 23 from left to right, a shaft elastic retainer ring 25 is arranged in the retainer ring groove 24, and the one-way bearing 13 is fixedly arranged on the sliding shaft sleeve 12 through the keys and the key groove 22.
The inner cavity wall of the shell 1 is provided with an integrally arranged bulge 18, the bulge 18 is a step sleeve with a transverse section shape in an L shape, the inner wall of the step sleeve is provided with long sliding grooves 19 which are symmetrically arranged, the inner wall of the step sleeve facing the left inner cavity is provided with a short sliding groove 20, and the long sliding grooves 19 and the short sliding grooves 20 are vertically arranged.
And bearings 9 are arranged between the friction end cover 2, the bearing end cover 16 and the screw rod 8, and bearing small end covers 17 are fixedly arranged on the side edges of the friction end cover 2 and the bearing end cover 16.
A second retainer ring annular groove 26 is formed in the inner wall of the one-way bearing sleeve 14 close to the retainer ring 11, and a hole elastic retainer ring 27 is clamped in the second retainer ring annular groove 26.
A spacer 30 is arranged between the sliding shaft sleeve 12 and the retainer ring 11.
After the specific clockwise rotation lead screw 8 drives the nut 10 to move a certain distance leftwards, simultaneously, the lead screw 8 drives the wearing plate 15 to synchronously rotate, the nut 10 starts to compress the main pressure spring 6, the main pressure spring 6 pushes the one-way bearing assembly 4 to move leftwards, finally, the clockwise rotation wearing plate 15 contacts with the fixed friction plate 5 and generates friction force, a damping effect is generated on the lead screw 8 to prevent the clockwise rotation of the lead screw, when the lead screw 8 continuously rotates, the pressure between the wearing plate 15 and the friction plate 5 is increased to cause the increase of the friction force, the larger the damping generated on the lead screw 8 is, and finally, a balance state is reached, namely, the rotating speed of the lead screw 8 is 0.
Taking a weight with the weight of 100Kg as an example, a rope is wound on a disc with the diameter of 50mm, the disc and a lead screw are coaxially fixed, the free end of the rope is fixed on the weight, when the weight falls from high altitude, the lead screw is driven by the rope to rotate clockwise, the rotating speed of the lead screw is reduced under the action of a damper, finally, the weight starts to move in a free falling body when falling from high altitude, the speed is high, the rear half section of the falling movement is deceleration movement, and finally, the speed of the weight is reduced to 0 when the weight is about to reach the ground, so that the damper plays a role in buffering the process of falling from high altitude on the weight. When the weights are at different heights, the damping intervention time can be adjusted by rotating the lead screw, so that the same effect is achieved. When the heavy object is pulled upwards or lifted by the rotating disc, no damping force acts on the rotating disc through the action of the one-way bearing in the damper.
While particular embodiments of the present invention have been described in the foregoing specification, various modifications and alterations to the previously described embodiments will become apparent to those skilled in the art from this description without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a rotatory variable damper of big moment of torsion of unidirectional modulation, includes casing (1) and lead screw (8), and the left side of casing (1) is equipped with rather than complex friction end cover (2), and the right side of casing (1) is equipped with rather than complex bearing end cover (16), its characterized in that: the inner wall of the shell (1) is provided with a bulge (18) which divides the inner cavity of the shell (1) into a left inner cavity and a right inner cavity, the wall of the right inner cavity of the shell (1) is symmetrically provided with long sliding chutes (19), the inner wall of the bulge (18) facing the left inner cavity is symmetrically provided with short sliding chutes (20),
a lead screw (8) penetrates through the shell (1), a one-way bearing assembly (4) is sleeved on the lead screw (8) positioned in the left cavity, a friction plate (5) is fixedly arranged on the right side surface of the friction end cover (2), a wear plate (15) is fixedly arranged on the left side surface of the one-way bearing assembly (4), a space is formed between the friction plate (5) and the wear plate (15), an auxiliary pressure spring (7) is sleeved on the lead screw (8) between the friction end cover (2) and the one-way bearing assembly (4),
the screw rod (8) positioned in the right cavity is provided with a nut (10) in threaded fit with the screw rod, the screw rod (8) between the one-way bearing assembly (4) and the nut (10) is sleeved with a main pressure spring (6), and the nut (10) is provided with a lug (29) which is matched with the long sliding groove (19) and moves in the long sliding groove (19).
2. A unidirectional adjustable high torque rotational variable damper as claimed in claim 1, wherein: the one-way bearing assembly (4) comprises a sliding shaft sleeve (12), a check ring (11) and a one-way bearing sleeve (14), the one-way bearing (13) is arranged between the sliding shaft sleeve (12) and the one-way bearing sleeve (14), the check ring (11) is sleeved at the head of the right end of the sliding shaft sleeve (12), a limiting bump (28) matched with the short chute (20) is arranged on the check ring (11), and a wear plate (15) is fixedly mounted on the left side surface of the one-way bearing sleeve (14).
3. A unidirectional adjustable high torque rotational damper as claimed in claim 2, wherein: the inner cavity of the sliding shaft sleeve (12) is symmetrically provided with a convex key (21), the outer surface of the sliding shaft sleeve (12) is sequentially provided with a first retainer ring annular groove (24), a key groove (22) and a step boss (23) from left to right, an elastic retainer ring (25) for the shaft is arranged in the retainer ring annular groove (24), and the one-way bearing (13) is fixedly arranged on the sliding shaft sleeve (12) through the key and the key groove (22).
4. A unidirectional adjustable high torque rotational variable damper as claimed in claim 1, wherein: the inner chamber wall of casing (1) on be equipped with arch (18) that the integration set up, arch (18) are the step cover of "L" type for horizontal cross sectional shape, set up long spout (19) that the symmetry set up on the inner wall of step cover, short spout (20) have been seted up on the inner wall of step cover orientation left side inner chamber, be perpendicular setting between long spout (19) and short spout (20).
5. A unidirectional adjustable high torque rotational variable damper as claimed in claim 1, wherein: and bearings (9) are arranged between the friction end cover (2), the bearing end cover (16) and the lead screw (8), and bearing small end covers (17) are fixedly mounted on the side edges of the friction end cover (2) and the bearing end cover (16).
6. A unidirectional adjustable high torque rotational damper as claimed in claim 2, wherein: a second retainer ring annular groove (26) is formed in the inner wall of the one-way bearing sleeve (14) close to the retainer ring (11), and a hole elastic retainer ring (27) is clamped in the second retainer ring annular groove (26).
7. A unidirectional adjustable high torque rotational damper as claimed in claim 2, wherein: a spacer bush (30) is arranged between the sliding shaft sleeve (12) and the retainer ring (11).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010282989.5A CN111350786A (en) | 2020-04-13 | 2020-04-13 | One-way adjustable large-torque rotary variable damper |
| PCT/CN2020/086663 WO2021208134A1 (en) | 2020-04-13 | 2020-04-24 | One-way adjustable large-torque rotary variable damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010282989.5A CN111350786A (en) | 2020-04-13 | 2020-04-13 | One-way adjustable large-torque rotary variable damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111350786A true CN111350786A (en) | 2020-06-30 |
Family
ID=71193259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010282989.5A Pending CN111350786A (en) | 2020-04-13 | 2020-04-13 | One-way adjustable large-torque rotary variable damper |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111350786A (en) |
| WO (1) | WO2021208134A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163741B (en) * | 2022-07-28 | 2024-03-01 | 安徽工程大学 | Electric automobile drive axle controller with shock-absorbing function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1291485B1 (en) * | 1997-01-31 | 1999-01-11 | Dayco Europe Spa | TENSIONER FOR A DRIVE BELT. |
| CN201031907Y (en) * | 2005-12-07 | 2008-03-05 | 深圳市科鼎五金实业有限公司 | Adjustable damper |
| CN205533962U (en) * | 2016-01-26 | 2016-08-31 | 佛山市科皓燃烧设备制造有限公司 | One -way adjustable damping ware |
| JP6774786B2 (en) * | 2016-05-25 | 2020-10-28 | オイレス工業株式会社 | Rotary damper |
| CN106051037B (en) * | 2016-08-01 | 2018-11-06 | 盐城工业职业技术学院 | A kind of mechanical one-way damper |
-
2020
- 2020-04-13 CN CN202010282989.5A patent/CN111350786A/en active Pending
- 2020-04-24 WO PCT/CN2020/086663 patent/WO2021208134A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2021208134A1 (en) | 2021-10-21 |
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