CN109538656B - End face tooth friction type telescopic moment limiter - Google Patents
End face tooth friction type telescopic moment limiter Download PDFInfo
- Publication number
- CN109538656B CN109538656B CN201811501174.0A CN201811501174A CN109538656B CN 109538656 B CN109538656 B CN 109538656B CN 201811501174 A CN201811501174 A CN 201811501174A CN 109538656 B CN109538656 B CN 109538656B
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- Prior art keywords
- tooth
- sleeve
- sprocket
- shaft sleeve
- face
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- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
- F16D43/21—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members
- F16D43/213—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces
- F16D43/215—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces with flat friction surfaces, e.g. discs
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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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/30—Chain-wheels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses an end face tooth friction type telescopic moment limiter. The novel belt pulley comprises a first shaft sleeve and a second shaft sleeve, wherein a sprocket is sleeved on the upper air of the first shaft sleeve, the first shaft sleeve and the second shaft sleeve are coaxially arranged, a tooth sleeve is arranged on one side of the sprocket at least, end face teeth are arranged on the opposite faces of the sprocket and the tooth sleeve, a pressing plate is arranged on the outer side of the tooth sleeve, an adjusting nut is further arranged on the first shaft sleeve, a belleville spring is arranged between the pressing plate and the adjusting nut, and the belleville spring is used for pressing the pressing plate towards the direction of the sprocket and can adjust the spring force of the belleville spring by using the adjusting nut. After adopting above-mentioned structure, its cooperation is reliable, and coefficient of friction is stable, and at the in-process of restriction moment, power transmission's owner, passive side can stretch out and draw back in axial certain limit, have improved moment restriction's stability and reliability greatly, receive influence extremely little such as temperature, vibration, lubricating oil, tooth cover and sprocket long service life, and the coefficient of friction that economic nature was realized simultaneously is stable, simple structure easily realizes simultaneously.
Description
Technical Field
The invention relates to an overload protection device, in particular to an end face tooth friction type telescopic moment limiter, and belongs to the technical field of mechanical transmission.
Background
The torque limiter is a mechanical overload protection device, and is commonly installed between a driving side and a load side of a power transmission, and once overload occurs, a transmission torque exceeds a set value, the transmission torque can be disconnected or slipped, so that the driving side and the driven side of the power transmission are separated, and mechanical equipment is prevented from being damaged due to overload.
The friction type moment limiter is one of the moment limiters, and in the prior art, such as the chinese patent CN201220405669, CN201520830097 and CN201620161809, as long as the friction type moment limiter is formed by friction plates and sprockets, the friction plates become one of the necessary characteristics of the friction type moment limiter.
The friction coefficient of the friction plate often changes along with the change of the service time and the service condition, the stability is relatively poor, especially the friction coefficient is seriously influenced by high temperature, the friction coefficient starts to decrease due to the rapid temperature rise and the general temperature reaching more than 200 ℃ in the friction process of the friction material, so that the limiting moment of the moment limiter is unstable and unreliable, and meanwhile, the friction plate belongs to a consumable part and has a short service life; in the slipping process, a large amount of micro powder is easy to generate, and the environment is polluted.
Disclosure of Invention
The invention aims to solve the technical problem of providing the end face tooth friction type telescopic moment limiter which has the advantages of simple structure, stable and reliable limiting moment, telescopic performance and long service life and has little influence on the environment.
In order to solve the technical problems, the end face tooth friction type telescopic moment limiter comprises a first shaft sleeve arranged on one transmission shaft and a second shaft sleeve arranged on the other transmission shaft, a chain wheel for outputting power is sleeved above the first shaft sleeve, the first shaft sleeve and the second shaft sleeve are coaxially arranged and can transmit the moment of the first shaft sleeve to the second shaft sleeve by means of the chain wheel to realize the active and passive side transmission of the power transmission, a tooth sleeve is arranged on at least one side of the chain wheel, end face teeth matched with each other are arranged on the opposite faces of the chain wheel and the tooth sleeve, a pressing plate which is also arranged on the shaft sleeve is arranged on the outer side of the tooth sleeve, an adjusting nut is further arranged on the first shaft sleeve, a butterfly spring is arranged between the pressing plate and the adjusting nut, and the butterfly spring is used for pressing the pressing plate towards the chain wheel direction and can adjust the spring force of the butterfly spring by utilizing the movement of the adjusting nut on the first shaft sleeve.
The second shaft sleeve comprises a mounting end and a gear tooth end integrally arranged on the mounting end, and the gear tooth end is arranged on one side of the sprocket.
The two sides of the chain wheel are respectively provided with a tooth sleeve, two tooth sleeves are respectively provided with end face teeth matched with the chain wheel, one tooth sleeve is externally pressed with a pressing plate, and the other tooth sleeve is pressed on the shaft shoulder of the first shaft sleeve.
A self-lubricating copper sleeve is arranged between the chain wheel and the shaft sleeve.
The sprocket is provided with inner end face teeth, and two tooth sleeves are provided with outer end face teeth.
The adjusting nut is in threaded connection with the shaft sleeve, and scales used for representing the corresponding relation between the rotation angle and the spring force value are arranged on the end face of the adjusting nut.
After adopting foretell structure, owing to two axle sleeves that carry out moment transmission through the teeth of a cogwheel that set up side by side and the one side of sprocket on the axle sleeve set up with the sprocket have the tooth cover of terminal surface tooth and lean on clamp plate and the belleville spring of pressing in the tooth cover outside, current friction disc structure has been got rid of, the sprocket passes through the double row chain with moment transmission to on the axle sleeve No. two, realize power transmission's owner, passive side transmission, in the in-process of transmission moment, this moment limiter can stretch out and draw back in axial certain range, simultaneously, utilize the terminal surface tooth meshing between sprocket and the tooth cover of taking the terminal surface tooth to realize friction pair function, utilize adjusting nut's removal on the axle sleeve to adjust the spring force of belleville spring, the coefficient of friction disc is along with operating time, operating condition's change, stability is relatively worse and friction coefficient receives high temperature's influence relatively, friction material is in the friction process, because shortcoming such as the rapid rise of temperature, it cooperates reliably, friction coefficient is stable, in the process of limiting moment, power transmission's owner, passive side can be in a certain axial range, the stability is greatly improved, the stability is realized, the stability is easy to realize, the stability is stable, the stability, and the stability is easy to realize, and has high temperature stability, and stability.
Drawings
FIG. 1 is a schematic illustration of a semi-sectional view of an end face tooth friction type retractable torque limiter of the present invention;
FIG. 2 is a schematic side elevational view of the sprocket of the present invention;
FIG. 3 is a partial cross-sectional view of the sprocket without the inner tooth plates of the present invention;
FIG. 4 is a partial cross-sectional view of a sprocket having an inner toothed disc in accordance with the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
Embodiment one:
As shown in the figure, the end face tooth friction type telescopic moment limiter of the embodiment comprises a first shaft sleeve 1 arranged on one transmission shaft and a second shaft sleeve 10 arranged on the other transmission shaft, wherein a sprocket 6 for outputting power is sleeved on the first shaft sleeve 1 in an empty mode, a self-lubricating copper sleeve 7 is arranged between the sprocket 6 and the first shaft sleeve 1, the first shaft sleeve 1 and the second shaft sleeve 10 are coaxially arranged, the second shaft sleeve 10 comprises a mounting end and a gear tooth end integrally arranged on the mounting end, the gear tooth end is provided with a conical groove, the periphery of the gear tooth end is provided with gear teeth, one end of the first shaft sleeve 1 extends into the conical groove, the gear tooth end is arranged on one side of the sprocket gear, the gear tooth end and the sprocket gear teeth are provided with double rows of chains, one side of the sprocket 6 is provided with a gear sleeve 5, the opposite surface of the sprocket 6 and the gear sleeve 5 is provided with end face teeth matched with each other, the outer side of the sprocket sleeve 5 is also provided with a pressing plate 4 arranged on the first shaft sleeve 1, the first shaft sleeve 1 is also provided with an adjusting nut 2, the adjusting nut 2 is connected with the shaft sleeve 1 through threads, one end face of the adjusting nut 2 is provided with the gear sleeve 2, the gear tooth end face is integrally arranged on the mounting end face, the mounting end face of the mounting end and the mounting end is provided with a gear tooth sleeve 2, the gear tooth end is integrally arranged on the second shaft sleeve 1, the other is integrally arranged on the other side of the other, and the other side is provided with the other side of the other side, and the other side of the other side.
Embodiment two:
The end face tooth friction type telescopic moment limiter comprises a first shaft sleeve 1 arranged on one transmission shaft and a second shaft sleeve 10 arranged on the other transmission shaft, wherein a sprocket 6 for outputting power is sleeved on the first shaft sleeve 1, a self-lubricating copper sleeve 7 can be arranged between the sprocket 6 and the first shaft sleeve 1, the first shaft sleeve 1 and the second shaft sleeve 10 are coaxially arranged, the second shaft sleeve 10 comprises a mounting end and a gear tooth end integrally arranged on the mounting end, the gear tooth end is provided with a conical groove, the periphery of the gear tooth end is provided with gear teeth, one end of the first shaft sleeve 1 stretches into the conical groove, the gear tooth end is arranged on one side of the sprocket, double rows of chains are arranged on the gear tooth end and the sprocket, according to the size of limiting moment required, a first gear sleeve and a second gear sleeve which are called two gear sleeves 5 are arranged on the left side and the right side of the sprocket 6, end face teeth mutually matched with the sprocket 6, that is to say, the first gear sleeve and the second gear sleeve 5 are arranged on the two sides of the sprocket 6 in a matched mode, and the first gear sleeve and the second gear sleeve are arranged on the two sides of the sprocket; the first tooth sleeve and the second tooth sleeve play a role in movement between the transmission shaft sleeve 1 and the chain wheel 8, when the chain wheel 6 is pressed by the first tooth sleeve and the second tooth sleeve, torque is transmitted to the chain wheel 6 by friction force generated on the matched end face teeth due to the action of the pressing force, the transmission shaft rotates, and once overload occurs, the first tooth sleeve, the second tooth sleeve and the chain wheel 6 slip on the matched end face teeth, the chain wheel 6 does not transmit torque any more, and the transmission shaft idles or stops.
In fact, the second tooth sleeve is optional and depends on the required limiting moment, if the engagement of the first tooth sleeve and the end face teeth of the sprocket can meet the required limiting moment value, the second tooth sleeve can be omitted, in order to enable the structure to be simple, the sprocket 6 in the embodiment is set to be an inner end face tooth, the two tooth sleeves 5 are all set to be outer end face teeth, so that the sprocket, the first tooth sleeve and the second tooth sleeve form end face teeth to engage to realize a friction pair function, a pressing plate 4 is arranged on the outer side of the first tooth sleeve, the pressing plate is arranged on the connecting sleeve, a butterfly spring 3 is arranged on the outer side of the pressing plate 4, namely, the pressing plate 4 is pressed towards the sprocket 6 through the butterfly spring 3, an adjusting nut 2 is further arranged on the sleeve 1, the adjusting nut 2 is in threaded connection with the sleeve 1, the adjusting nut abuts against the spring along the direction of the sprocket, scales for representing the corresponding relation between the rotation angle and the spring force value are arranged on the end face of the adjusting nut 2, the sprocket is used for adjusting the spring force through the movement of the adjusting nut on the sleeve, the sprocket is used for transmitting moment to the second tooth sleeve through a double-row chain, the main and driven side of the power transmission is realized, the moment is transmitted to the second tooth sleeve, the first tooth sleeve and the second tooth sleeve is axially pressed against the first tooth sleeve and the second tooth sleeve 5 and the second tooth sleeve is axially in a certain shoulder 8 is pressed against the first tooth sleeve and the second tooth sleeve 5.
Further, the number of the belleville springs is determined by the limited moment value, and other springs meeting the force value requirement, such as a corrugated spring, can be selected.
Embodiment III:
As shown in the figure, the end face tooth friction type telescopic moment limiter of the embodiment comprises a first shaft sleeve 1 arranged on one transmission shaft and a second shaft sleeve 10 arranged on the other transmission shaft, wherein the first shaft sleeve 1 is provided with a key slot and a threaded hole for locking, and the second shaft sleeve 10 is also provided with a key slot and a threaded hole for locking; the first shaft sleeve 1 is sleeved with a chain wheel 6 for outputting power, namely, the motion of the first shaft sleeve 1 cannot be directly transmitted to the chain wheel 6, a self-lubricating copper sleeve 7 is arranged between the chain wheel 6 and the first shaft sleeve 1, the first shaft sleeve 1 and the second shaft sleeve 10 are coaxially arranged, the second shaft sleeve 10 comprises a mounting end and a gear tooth end integrally arranged on the mounting end, a conical groove is formed on the gear tooth end, the periphery of the gear tooth end is provided with gear teeth, one end of the first shaft sleeve 1 stretches into the conical groove, the gear tooth end is arranged on one side of the chain wheel, a double-row chain is arranged on the gear tooth end and the chain wheel, an annular groove is arranged on one side end surface of the chain wheel 6, an inner fluted disc 602 is arranged in the annular groove through a fastener 601, a tooth sleeve 5 matched with the inner fluted disc 602 is arranged on one side of the chain wheel 6, preferably, the inner fluted disc of a wearing piece is connected with a chain wheel main body through a screw, and the cylindrical pin 603 can bear shearing force in the circumferential direction, the number of the screws and the cylindrical pins can be determined according to torque calculation, the chain wheel adopts a split type structure, when in maintenance, only the inner tooth disc of the wearing part is needed to be replaced, the chain wheel main body can be used for a long time after maintenance, the outer side of the tooth sleeve 5 is provided with a pressing plate 4 which is also arranged on the shaft sleeve, the first shaft sleeve 1 is also provided with an adjusting nut 2, the adjusting nut 2 is in threaded connection with the first shaft sleeve 1, the end surface of the adjusting nut 2 is provided with scales which are used for representing the corresponding relation between the rotation angle and the spring force value, a butterfly spring 3 is arranged between the pressing plate 4 and the adjusting nut 2, the butterfly spring 3 is used for pressing the pressing plate towards the chain wheel 6 and can adjust the spring force of the butterfly spring by utilizing the movement of the adjusting nut 2 on the first shaft sleeve 1, meanwhile, in the process of limiting the moment, the first shaft sleeve and the second shaft sleeve on the main and the driven sides are not directly rigidly connected, when the axial load is affected by temperature, the belleville spring will compress or relax in axial direction, so that the active and passive sides of the power transmission can expand and contract in axial direction.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a scalable moment limiter of terminal surface tooth friction formula which characterized in that: including installing a epaxial axle sleeve (1) and installing at another epaxial No. two axle sleeves (10) of transmission, the cover that is empty has sprocket (6) that are used for exporting power in a No. 1, axle sleeve (1) and No. two axle sleeves (10) coaxial setting and can be with the moment of No. one axle sleeve (1) realize the main, the passive side transmission of power transmission on No. two axle sleeves (10) with the help of sprocket (6), be provided with tooth cover (5) in one side of sprocket (6) at least, the opposite face of sprocket (6) and tooth cover (5) is provided with the terminal surface tooth of mutually supporting, the outside of tooth cover (5) is provided with clamp plate (4) of also installing on a No. one axle sleeve, install adjusting nut (2) on No. 1), install belleville spring (3) between clamp plate (4) and adjusting nut (2), belleville spring (3) are used for to be used for to the clamp plate (6) direction extrusion and can utilize the belleville spring of adjusting nut (2) on No. 1 moves the belleville spring of adjusting.
2. The end tooth friction type telescopic torque limiter of claim 1, wherein: the second shaft sleeve (10) comprises a mounting end and a gear tooth end integrally arranged on the mounting end, wherein the gear tooth end is arranged on one side of the sprocket side by side, and double-row chains are arranged on the gear tooth end and the sprocket.
3. The end tooth friction type telescopic torque limiter according to claim 1 or 2, wherein: two sides of the chain wheel (6) are respectively provided with a tooth sleeve (5), two tooth sleeves (5) are respectively provided with end face teeth matched with the chain wheel (6), one tooth sleeve (5) is externally pressed with a pressing plate (4), and the other tooth sleeve (5) is pressed on the shaft shoulder of the first shaft sleeve.
4. A face tooth friction type telescopic torque limiter according to claim 1, 2 or 3, wherein: a self-lubricating copper sleeve (7) is arranged between the chain wheel (6) and the first shaft sleeve (1).
5. A face tooth friction type telescopic torque limiter according to claim 3, wherein: the chain wheel (6) is provided with inner end face teeth, and the two tooth sleeves (5) are provided with outer end face teeth.
6. The end tooth friction type retractable torque limiter according to claim 1,2 or 5, wherein: the adjusting nut (2) is in threaded connection with the first shaft sleeve (1), and scales used for representing the corresponding relation between the rotation angle and the spring force value are arranged on the end face of the adjusting nut (2).
7. The end tooth friction type telescopic torque limiter of claim 6, wherein: an annular groove is formed in the end face of the chain wheel (6), and an inner fluted disc (602) is arranged in the annular groove through a fastener (601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811501174.0A CN109538656B (en) | 2018-12-10 | 2018-12-10 | End face tooth friction type telescopic moment limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811501174.0A CN109538656B (en) | 2018-12-10 | 2018-12-10 | End face tooth friction type telescopic moment limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109538656A CN109538656A (en) | 2019-03-29 |
| CN109538656B true CN109538656B (en) | 2024-06-11 |
Family
ID=65854441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811501174.0A Active CN109538656B (en) | 2018-12-10 | 2018-12-10 | End face tooth friction type telescopic moment limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109538656B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000018271A (en) * | 1998-06-25 | 2000-01-18 | Iseki Tekko Kk | Torque limitter |
| DE10246280B3 (en) * | 2002-10-02 | 2004-07-29 | J.D. Neuhaus Gmbh & Co. Kg | Lifting winch has slip coupling incorporated in intermediate gearing between drive and chain reel for limitation of lifted load |
| CN203051665U (en) * | 2013-02-21 | 2013-07-10 | 宁波拓尔电机有限公司 | Intermediate slipping device of gearbox |
| CN108105281A (en) * | 2016-11-24 | 2018-06-01 | 兰州飞行控制有限责任公司 | A kind of friction type torque limiter |
| CN211231351U (en) * | 2018-12-10 | 2020-08-11 | 镇江市高等专科学校 | End face tooth friction type telescopic torque limiter |
-
2018
- 2018-12-10 CN CN201811501174.0A patent/CN109538656B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000018271A (en) * | 1998-06-25 | 2000-01-18 | Iseki Tekko Kk | Torque limitter |
| DE10246280B3 (en) * | 2002-10-02 | 2004-07-29 | J.D. Neuhaus Gmbh & Co. Kg | Lifting winch has slip coupling incorporated in intermediate gearing between drive and chain reel for limitation of lifted load |
| CN203051665U (en) * | 2013-02-21 | 2013-07-10 | 宁波拓尔电机有限公司 | Intermediate slipping device of gearbox |
| CN108105281A (en) * | 2016-11-24 | 2018-06-01 | 兰州飞行控制有限责任公司 | A kind of friction type torque limiter |
| CN211231351U (en) * | 2018-12-10 | 2020-08-11 | 镇江市高等专科学校 | End face tooth friction type telescopic torque limiter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109538656A (en) | 2019-03-29 |
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