CN109519488B - Conical surface friction type telescopic moment limiter - Google Patents
Conical surface friction type telescopic moment limiter Download PDFInfo
- Publication number
- CN109519488B CN109519488B CN201811502967.4A CN201811502967A CN109519488B CN 109519488 B CN109519488 B CN 109519488B CN 201811502967 A CN201811502967 A CN 201811502967A CN 109519488 B CN109519488 B CN 109519488B
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- sleeve
- taper
- sprocket
- shaft sleeve
- chain wheel
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- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 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 6
- 230000033001 locomotion Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 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
- F16D43/218—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 conical friction surfaces
-
- 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)
- Transmission Devices (AREA)
Abstract
The invention discloses a conical surface friction type telescopic moment limiter. The novel belt pulley comprises a first shaft sleeve and a second shaft sleeve, wherein a chain wheel is sleeved above the first shaft sleeve, the first shaft sleeve and the second shaft sleeve are coaxially arranged, a taper sleeve is arranged on one side of the chain wheel at least, an inner taper and an outer taper are arranged on the opposite surfaces of the chain wheel and the taper sleeve, a pressing plate which is also arranged on the shaft sleeve is arranged on the outer side of the taper 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 extruding the pressing plate towards the direction of the chain wheel and can adjust the spring force of the butterfly spring by using the adjusting nut. After adopting above-mentioned structure, its cooperation is reliable, 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, and tapering cover and sprocket long service life, economic nature is good, and the coefficient of friction who realizes simultaneously is stable, receives the influence of temperature minimum, simple structure easily realizes simultaneously.
Description
Technical Field
The invention relates to an overload protection device, in particular to a conical surface 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 conical surface 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 conical surface 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, wherein 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, at least one side of the chain wheel is provided with a taper sleeve, the opposite surfaces of the chain wheel and the taper sleeve are provided with internal taper and external taper which are matched with each other, the outer side of the taper sleeve is provided with a pressing plate which is also arranged on the shaft 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 utilize the movement of the adjusting nut on the first shaft sleeve to adjust the spring force of the butterfly spring.
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 taper sleeve, the two taper sleeves are respectively provided with taper surfaces matched with the chain wheel, one taper sleeve is externally pressed with a pressing plate, and the other taper sleeve is pressed against 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 set to be inner taper, and the two taper sleeves are set to be outer taper.
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 the axle sleeve that two through the teeth of a cogwheel that set up side by side carry out moment transmission and the taper sleeve of the taper surface that one side of sprocket set up on the axle sleeve mutually supported with the sprocket and lean on pressing at the clamp plate and the belleville spring in the taper sleeve 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 main, passive side transmission, in the in-process of transmission moment, this moment limiter can stretch out and draw back in axial certain scope, simultaneously, utilize the taper fit between tapered sprocket and the tapered taper sleeve to realize friction pair function, utilize the removal of adjusting nut on the axle sleeve to adjust the spring force of belleville spring, the coefficient that has overcome traditional friction disc changes along with live time, the change of service condition, stability is relatively worse and friction coefficient receives high temperature's influence more seriously, friction material is in the friction process, because of the shortcoming such as quick rise of temperature, it cooperates the reliability in the process of being lowered, in the limit moment, power transmission's main, passive side can be in axial certain scope, greatly improve moment and stability and reliability are realized, the stability is very little, the realization is stable, the life-span is easy, the realization is stable, the temperature is stable is influenced by the structure, simultaneously.
Drawings
FIG. 1 is a schematic view of a conical surface friction type telescopic torque limiter in a semi-sectional state;
FIG. 2 is a schematic side view of the conical surface friction type telescopic torque limiter of the present invention;
FIG. 3 is a partial cross-sectional view of a sprocket without an inner cone sleeve in accordance with the present invention;
FIG. 4 is a partial cross-sectional view of a sprocket having an inner cone sleeve 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 conical 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 used 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 row chains, a taper sleeve 5 is arranged on one side of the sprocket 6, the opposite surfaces of the sprocket 6 and the taper sleeve 5 are provided with internal taper and external taper, a pressing plate 4 also arranged on the first shaft sleeve 5 in an identical mode, an adjusting nut 2 is further arranged on the first shaft sleeve 1, 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 end face of the mounting end, the adjusting nut is provided with a rotating angle corresponding to the butterfly nut 3, and the butterfly nut can be used for transmitting moment in the axial direction of the butterfly nut by the butterfly nut, and the butterfly nut can be adjusted by the butterfly nut 2, and the butterfly nut can be axially adjusted by the butterfly nut.
Embodiment two:
The conical surface 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 chain wheel 6 for outputting power is sleeved above the first shaft sleeve 1, a self-lubricating copper sleeve 7 can be 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, 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 chain wheel teeth side by side, the gear tooth end and the chain wheel teeth are provided with double-row chains, the left side and the right side of the chain wheel 6 are respectively provided with a conical sleeve 5 according to the required limiting moment, a first conical sleeve and a second conical sleeve 5 are arranged between opposite conical surfaces of the two conical sleeves 5 and the chain wheel 6, namely the first conical sleeve and the second conical sleeve 5 are arranged on two sides of the chain wheel 6 respectively; the first taper sleeve and the second taper sleeve play a role in movement between the transfer sleeve 1 and the sprocket 8, torque is transmitted to the sprocket 6 by friction force generated on the matched taper surface due to the action of the pressing force when the sprocket 6 is pressed by the first taper sleeve and the second taper sleeve, the transmission shaft rotates, and once overload occurs, the first taper sleeve and the second taper sleeve slide on the matched taper surface with the sprocket 6, the sprocket 6 does not transmit torque any more, and the transmission shaft runs idle or stops.
In fact, the second taper sleeve is optional and depends on the required limiting moment, if the taper fit of the first taper sleeve and the sprocket can meet the required limiting moment value, the second taper sleeve can be omitted, in order to enable the structure to be simple, the sprocket 6 in the embodiment is set to be inner taper, the two taper sleeves 5 are all set to be outer taper, so that the sprocket, the first taper sleeve and the second taper sleeve form taper fit to achieve a friction pair function, a pressing plate 4 is arranged on the outer side of the first taper 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 extruded towards the sprocket 6 through the butterfly spring 3, an adjusting nut 2 is further installed on the sleeve 1, the adjusting nut 2 is in threaded connection with the sleeve 1 and abuts against the spring along the direction of the sprocket, scales used for representing the corresponding relation between the rotating angle and the spring force value are arranged on the end face of the adjusting nut 2, the sprocket is adjusted to the spring force by utilizing the movement of the adjusting nut on the sleeve, the sprocket is transmitted to the second taper sleeve through a double-row chain, the moment is transmitted to the second taper sleeve, the main taper sleeve and the driven side of the power transmission is realized, the moment is compressed against the first taper sleeve and the driven side of the second taper sleeve, the second taper sleeve can be compressed against the first taper sleeve and the second taper sleeve 5 and the second taper sleeve 4 in a certain range of the axial taper sleeve is compressed against the first taper sleeve 8 and the second taper sleeve 4.
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 conical surface 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 taper sleeve 602 is arranged in the annular groove through a fastener 601, one side of the chain wheel 6 is provided with a taper sleeve 5 matched with the inner taper sleeve 602, preferably, the inner taper sleeve of a wearing piece is connected with a chain wheel main body through a screw, and the shearing force in the circumferential direction can be borne by a cylindrical pin, 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 taper sleeve of the wearing piece is needed to be replaced, the chain wheel main body can be used for a long time after maintenance, the outer side of the taper 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 shaft sleeve 1, the first shaft sleeve and the second shaft sleeve on the active side and the passive side are not directly rigidly connected, when axial load acts under the influence of temperature and the like, the belleville spring is compressed or relaxed in the axial direction, so that the active side and the passive side of the power transmission can stretch and retract in a certain axial range.
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. A conical surface friction type telescopic moment limiter is 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 No. one axle sleeve (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 power transmission's main, passive side transmission on No. two axle sleeves (10) with the help of sprocket (6), be provided with tapering cover (5) in one side of sprocket (6) at least, the opposite face of sprocket (6) and tapering cover (5) is provided with the internal taper and the external taper of mutually supporting, the outside of tapering cover (5) is provided with clamp plate (4) of installing equally on the axle sleeve, install adjusting nut (2) still on No. one axle sleeve (1), install belleville spring (3) between clamp plate (4) and adjusting nut (2), belleville spring (3) are used for to the sprocket (6) orientation extrusion clamp plate and can utilize the belleville spring of adjusting nut (2) on the belleville spring of a epaxial sleeve (1) removes.
2. The conical surface friction type telescopic moment limiter according to 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. A conical surface friction type telescopic moment limiter according to claim 1 or 2, wherein: the two sides of sprocket (6) are provided with a tapering cover (5) respectively, two tapering cover (5) all are provided with the tapering face of mutually supporting with sprocket (6), and one of them tapering cover (5) external side pressure has clamp plate (4), and another tapering cover (5) is leaned on and is pressed on the shaft shoulder of a No. axle sleeve.
4. A conical surface friction type telescopic moment limiter according to claim 3, wherein: a self-lubricating copper sleeve (7) is arranged between the chain wheel (6) and the first shaft sleeve (1).
5. A conical surface friction type telescopic moment limiter according to claim 3, wherein: the chain wheel (6) is arranged to be internally tapered, and the two taper sleeves (5) are arranged to be externally tapered.
6. The conical surface friction type telescopic moment 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 conical surface friction type telescopic moment limiter according to claim 6, wherein: an annular groove is formed in the end face of the chain wheel (6), and an inner taper sleeve (602) is arranged in the annular groove through a fastener (601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811502967.4A CN109519488B (en) | 2018-12-10 | 2018-12-10 | Conical surface friction type telescopic moment limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811502967.4A CN109519488B (en) | 2018-12-10 | 2018-12-10 | Conical surface friction type telescopic moment limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109519488A CN109519488A (en) | 2019-03-26 |
| CN109519488B true CN109519488B (en) | 2024-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811502967.4A Active CN109519488B (en) | 2018-12-10 | 2018-12-10 | Conical surface friction type telescopic moment limiter |
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| CN (1) | CN109519488B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211231350U (en) * | 2018-12-10 | 2020-08-11 | 镇江市高等专科学校 | Conical surface friction type telescopic torque limiter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7465248B2 (en) * | 2005-06-17 | 2008-12-16 | Tok Bearing Co., Ltd. | Planetary gear type reduction gear with torque limiter |
| CN200989393Y (en) * | 2006-04-26 | 2007-12-12 | 中原工学院 | Torque adjustable shaft coupling |
| CN205605680U (en) * | 2016-05-09 | 2016-09-28 | 常州机电职业技术学院 | Friction torque-limiting clutch |
| CN108105281B (en) * | 2016-11-24 | 2019-07-23 | 兰州飞行控制有限责任公司 | A kind of friction type torque limiter |
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2018
- 2018-12-10 CN CN201811502967.4A patent/CN109519488B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211231350U (en) * | 2018-12-10 | 2020-08-11 | 镇江市高等专科学校 | Conical surface friction type telescopic torque limiter |
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| CN109519488A (en) | 2019-03-26 |
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