CN107339337B - One-way slip torque limiter - Google Patents
One-way slip torque limiter Download PDFInfo
- Publication number
- CN107339337B CN107339337B CN201710142033.3A CN201710142033A CN107339337B CN 107339337 B CN107339337 B CN 107339337B CN 201710142033 A CN201710142033 A CN 201710142033A CN 107339337 B CN107339337 B CN 107339337B
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- China
- Prior art keywords
- input shaft
- input
- sleeve
- torque limiter
- flange
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Classifications
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D47/00—Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the preceding guide headings
- F16D47/04—Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the preceding guide headings of which at least one is a freewheel
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to the technical field of torque limiters, in particular to a one-way slip torque limiter, which comprises an input sleeve, an input shaft and a connecting flange, wherein the input shaft is arranged at one end of the connecting flange in a sliding manner along the axial direction of the input shaft, a first limiting mechanism for limiting the radial displacement of the connecting flange is arranged on the input shaft, a first spring is arranged between the inside of the connecting flange and the input shaft, and the input sleeve is positioned between the input shaft and the connecting flange. The one-way slip torque limiter can be used for weakening reverse impact existing in a transmission system, plays a role in protecting equipment such as a fan gear box and the like, and has a damping effect.
Description
Technical Field
The invention relates to the technical field of torque limiters, in particular to a one-way slip torque limiter.
Background
The wind driven generator drives the impeller to rotate through natural wind, so that the impeller drives the gear box, and finally, the gear box and the generator transmit power through the installation of the coupler, and the rotation of the generator is realized to generate electricity. In order to prevent the excessive torsion between the gearbox and the generator, which may cause damage to the gearbox or the generator, a conventional torque limiter is usually added to the coupling, and the conventional torque limiter usually mainly plays a role in forward overload protection. The reverse torque exists in a transmission system of the wind generating set, meanwhile, the torque force of reverse impact is far smaller than the set slip torque force of the forward overload protection, and the slip torque force is not enough to trigger the slip of the traditional torque limiter, so that the torque limiter cannot avoid or weaken the reverse impact force, and the damage of internal parts can be caused for a long time.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem that a generator or a gearbox is damaged by reverse torque impact existing in a transmission system of a wind generating set, a one-way slip torque limiter is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an one-way torque limiter that skids, includes input sleeve, input shaft and flange, the input shaft sets up the one end at flange along its endwise slip, be equipped with the stop gear who is used for restricting flange radial displacement on the input shaft, in the flange with be equipped with the spring between the input shaft, the input sleeve is located between input shaft and the flange, the contact surface of input sleeve and input shaft and the contact surface of input sleeve and flange are frictional connection, fixedly connected with backstop between input sleeve and the input shaft.
When the invention is used, firstly, a torsion value can be set for the torsion of the frictional connection between the input sleeve and the contact surface of the input shaft and the torsion of the frictional connection between the input sleeve and the contact surface of the connecting flange, the torsion value is smaller than the torsion generated by reverse impact, the impeller inputs power and drives the input sleeve to rotate, the torsion is in a normal range, the backstop drives the input shaft to rotate together due to the backstop arranged between the input shaft and the input sleeve, so that the connecting flange drives the rear end part to transmit the power, the power is transmitted to the generator, the connecting flange transmits the torsion of the reverse impact to the input shaft due to the reverse torsion existing in a transmission system of the wind generating set, and the torsion set among the input shaft, the input sleeve and the connecting flange is smaller than the torsion of the reverse impact, so that the input sleeve overcomes the friction force between the input shaft and the connecting flange to be disengaged, thereby playing a role of protecting the gear box; when the impeller rotates reversely, the backstop is arranged between the input shaft and the input sleeve, the backstop enables the input sleeve to only slip in one direction and lock in the other direction, meanwhile, the torque force of the friction connection between the contact surfaces of the input sleeve and the input shaft and the torque force of the friction connection between the contact surfaces of the input sleeve and the connecting flange are set to be a little bit, the input sleeve is directly enabled to overcome the friction force to be disengaged and idle, and the overload protection effect is achieved.
In order to realize the radial limiting of the input shaft, the limiting mechanism further comprises spline grooves formed in the input shaft, matched spline teeth are arranged on the connecting flange, and the spline grooves are formed in the spline teeth. Through spline grooves on the input shaft and spline tooth cooperation on the flange, can satisfy the input shaft small amplitude displacement on flange, can have radial limiting displacement again, prevent relative rotation between input shaft and the flange.
In order to realize the friction connection among the input shaft, the input sleeve and the connecting flange, friction plates are further arranged between contact surfaces of the input sleeve and the input shaft and between contact surfaces of the input sleeve and the connecting flange. Through set up the friction disc on the contact surface between input shaft, input sleeve and flange to when torsion is greater than the frictional force between input shaft, input sleeve and the flange, make the input sleeve throw off, play the safety protection effect.
In order to facilitate installation and maintenance of the backstop, further, the inner ring of the backstop is fixedly connected with the input shaft through a flat key, and the outer ring of the backstop is fixedly connected with the input sleeve through a flat key. The backstop is fixed between the input shaft and the input sleeve in a flat key connection mode, and the input sleeve is simple in structure, convenient to install and convenient to maintain.
Preferably, the spring is a belleville spring. The butterfly spring has high rigidity and strong buffering and vibration absorbing capacity, can bear large load with small deformation, and is suitable for occasions with small requirement on axial space.
The invention has the beneficial effects that: when the one-way slip torque limiter is used, the torque transmitted by a transmission system is limited in a slip mode in one direction only, and the one-way slip torque limiter automatically restores the connection when the overload condition disappears. The one-way slip torque limiter can be used for weakening reverse impact existing in a transmission system, plays a role in protecting equipment such as a fan gear box and the like, and has a damping effect.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front view of the one-way slip torque limiter of the present invention;
FIG. 2 is a left side view of the one-way slip torque limiter of the present invention;
fig. 3 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.
In the figure: 1. the input shaft comprises an input sleeve, 2, an input shaft, 3, a spring, 4, a connecting flange, 5, a backstop, 6, a friction plate, 7 and a flat key.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. 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.
Examples
As shown in fig. 1, 2 and 3, the one-way slip torque limiter includes an input sleeve 1, an input shaft 2 and a connecting flange 4, wherein the input shaft 2 is slidably disposed at one end of the connecting flange 4 along an axial direction thereof, a limiting mechanism for limiting radial displacement of the connecting flange 4 is disposed on the input shaft 2, springs 3 are disposed between the inside of the connecting flange 4 and the input shaft 2, the springs 3 are all belleville springs 3, the input sleeve 1 is disposed between the input shaft 2 and the connecting flange 4, a contact surface between the input sleeve 1 and the input shaft 2 and a contact surface between the input sleeve 1 and the connecting flange 4 are both in friction connection, and a backstop 5 is fixedly connected between the input sleeve 1 and the input shaft 2.
The limiting mechanism comprises a spline groove arranged on the input shaft 2, the connecting flange 4 is provided with matched spline teeth, and the spline groove is arranged on the spline teeth.
The inner ring of the backstop 5 is fixedly connected with the input shaft 2 through a flat key 7, and the outer ring of the backstop 5 is also fixedly connected with the input sleeve 1 through the flat key 7.
When the unidirectional slip torque limiter is in use, one end of an input sleeve 1 is fixedly connected with the output end of a gear box, a connecting flange 4 is fixedly connected with a coupler, the coupler is fixedly connected with the input end of a generator, the gear box is driven by an impeller, power is transmitted to the input sleeve 1 by the gear box, the power is transmitted to an input shaft 2 by the input sleeve 1 and a backstop 5 on the input shaft 2, the input shaft 2 is transmitted to a connecting flange 4 disc, and finally the power is transmitted to the coupler by the connecting flange 4 and drives the generator to rotate; when the impeller rotates reversely, the backstop 5 enables the input sleeve 1 to only slip in one direction, the input sleeve 1 is locked in the other direction, the torque of the input sleeve 1 is far greater than the slip torque among the input shaft 2, the input sleeve 1 and the connecting flange 4, the input sleeve 1 is directly separated, power cannot be transmitted to the generator, and the generator is protected. The application of the one-way torque limiter is universal, and the invention takes the fan as an example, but is not only limited to the fan, and can be suitable for the occasions of reverse impact generated during torque transmission among various transmission parts.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A one-way slip torque limiter characterized by: including input sleeve (1), input shaft (2) and flange (4), input shaft (2) set up the one end at flange (4) along its endwise slip, be equipped with the stop gear who is used for restricting flange (4) radial displacement on input shaft (2), flange (4) in with be equipped with spring (3) between input shaft (2), input sleeve (1) is located between input shaft (2) and flange (4), the contact surface of input sleeve (1) and input shaft (2) and the contact surface of input sleeve (1) and flange (4) are frictional connection, fixedly connected with backstop (5) between input sleeve (1) and input shaft (2).
2. The one-way slip torque limiter according to claim 1, wherein: the limiting mechanism comprises a spline groove arranged on the input shaft (2), the connecting flange (4) is provided with matched spline teeth, and the spline groove is arranged on the spline teeth.
3. The one-way slip torque limiter according to claim 1, wherein: and friction plates (6) are arranged between the contact surfaces of the input sleeve (1) and the input shaft (2) and between the contact surfaces of the input sleeve (1) and the connecting flange (4).
4. The unidirectional slip torque limiter of claim 1, wherein: the inner ring of the backstop (5) is fixedly connected with the input shaft (2) through a flat key (7), and the outer ring of the backstop (5) is also fixedly connected with the input sleeve (1) through the flat key (7).
5. The unidirectional slip torque limiter of claim 1, wherein: the springs (3) are all belleville springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142033.3A CN107339337B (en) | 2017-03-10 | 2017-03-10 | One-way slip torque limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142033.3A CN107339337B (en) | 2017-03-10 | 2017-03-10 | One-way slip torque limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107339337A CN107339337A (en) | 2017-11-10 |
| CN107339337B true CN107339337B (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710142033.3A Active CN107339337B (en) | 2017-03-10 | 2017-03-10 | One-way slip torque limiter |
Country Status (1)
| Country | Link |
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| CN (1) | CN107339337B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464581A (en) * | 2021-07-09 | 2021-10-01 | 上海电气风电集团股份有限公司 | Shaft coupling and wind generating set comprising same |
| CN114215860B (en) * | 2021-12-20 | 2023-05-23 | 机械科学研究总院青岛分院有限公司 | Mechanical quantitative torque regulating limiter |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB826499A (en) * | 1956-10-19 | 1960-01-06 | Bamfords Ltd | Improvements in agricultural machines |
| EP0292347A1 (en) * | 1987-05-21 | 1988-11-23 | Valeo Equipements Electriques Moteur | Drive assembly with a torque limiter for starter with an overrunning clutch |
| JPH07190083A (en) * | 1993-12-28 | 1995-07-28 | Seiko Instr Inc | Torque limiter |
| CN201209632Y (en) * | 2008-06-06 | 2009-03-18 | 无锡创明传动工程有限公司 | Coupler torquemoment overload protection device |
| EP2333330A2 (en) * | 2009-12-10 | 2011-06-15 | Centa-Antriebe Kirschey GmbH | Coupling with overload clutch for a wind turbine |
| CN103527654A (en) * | 2013-02-21 | 2014-01-22 | 蒋璋璋 | Motor vehicle clutch |
| CN104254704A (en) * | 2012-04-24 | 2014-12-31 | 埃博集团有限公司 | Wind turbine torque limiting clutch system |
| CN104863990A (en) * | 2015-05-28 | 2015-08-26 | 无锡创明传动工程有限公司 | Friction type torque limiting structure |
| CN105864372A (en) * | 2016-06-24 | 2016-08-17 | 吉林博承传动系统科技有限公司 | Planet row type two-gear transmission and gear shift control method thereof |
| CN206539620U (en) * | 2017-03-10 | 2017-10-03 | 利恩传动设备（常州）有限公司 | Unidirectional breakaway torque limiter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4174820B2 (en) * | 2003-03-11 | 2008-11-05 | 株式会社デンソー | Starter |
| JP2007315558A (en) * | 2006-05-29 | 2007-12-06 | Nsk Warner Kk | Mechanical joint type multiplate wet clutch |
| JP5474866B2 (en) * | 2011-04-22 | 2014-04-16 | 住友重機械工業株式会社 | Reduction gear used for wind power generation equipment |
-
2017
- 2017-03-10 CN CN201710142033.3A patent/CN107339337B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB826499A (en) * | 1956-10-19 | 1960-01-06 | Bamfords Ltd | Improvements in agricultural machines |
| EP0292347A1 (en) * | 1987-05-21 | 1988-11-23 | Valeo Equipements Electriques Moteur | Drive assembly with a torque limiter for starter with an overrunning clutch |
| US4883152A (en) * | 1987-05-21 | 1989-11-28 | Societe Equipements Electriques Moteur | Starter drive assemblies for internal combustion engines of the type having an overrunning clutch |
| JPH07190083A (en) * | 1993-12-28 | 1995-07-28 | Seiko Instr Inc | Torque limiter |
| CN201209632Y (en) * | 2008-06-06 | 2009-03-18 | 无锡创明传动工程有限公司 | Coupler torquemoment overload protection device |
| EP2333330A2 (en) * | 2009-12-10 | 2011-06-15 | Centa-Antriebe Kirschey GmbH | Coupling with overload clutch for a wind turbine |
| CN104254704A (en) * | 2012-04-24 | 2014-12-31 | 埃博集团有限公司 | Wind turbine torque limiting clutch system |
| CN103527654A (en) * | 2013-02-21 | 2014-01-22 | 蒋璋璋 | Motor vehicle clutch |
| CN104863990A (en) * | 2015-05-28 | 2015-08-26 | 无锡创明传动工程有限公司 | Friction type torque limiting structure |
| CN105864372A (en) * | 2016-06-24 | 2016-08-17 | 吉林博承传动系统科技有限公司 | Planet row type two-gear transmission and gear shift control method thereof |
| CN206539620U (en) * | 2017-03-10 | 2017-10-03 | 利恩传动设备（常州）有限公司 | Unidirectional breakaway torque limiter |
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| Publication number | Publication date |
|---|---|
| CN107339337A (en) | 2017-11-10 |
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