CN211231351U - End face tooth friction type telescopic torque limiter - Google Patents
End face tooth friction type telescopic torque limiter Download PDFInfo
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- CN211231351U CN211231351U CN201822069593.3U CN201822069593U CN211231351U CN 211231351 U CN211231351 U CN 211231351U CN 201822069593 U CN201822069593 U CN 201822069593U CN 211231351 U CN211231351 U CN 211231351U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 230000033001 locomotion Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 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
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 239000010687 lubricating oil Substances 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000002783 friction material Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 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
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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Abstract
The utility model discloses a scalable moment limiter of terminal surface tooth friction formula. It includes axle sleeve and No. two axle sleeves, and the sky cover has the sprocket on the axle sleeve, and axle sleeve and No. two coaxial settings of axle sleeve are provided with the tooth cover in one side of sprocket at least, and the opposite face of sprocket and tooth cover sets up the end face tooth, and the outside of tooth cover sets up the clamp plate, still installs adjusting nut on the axle sleeve, settles disc spring between clamp plate and the adjusting nut, and disc spring is used for to sprocket direction extrusion clamp plate and can utilize adjusting nut to adjust disc spring's spring force. After the structure is adopted, the matching and matching are reliable, the friction coefficient is stable, in the process of limiting the moment, the driving side and the driven side of the power transmission can stretch out and draw back in a certain range in the axial direction, the stability and the reliability of the moment limitation are greatly improved, the influence of temperature, vibration, lubricating oil and the like is extremely small, the service lives of the gear sleeve and the chain wheel are long, the economical efficiency is good, the friction coefficient is stable, and meanwhile, the structure is simple and easy to realize.
Description
Technical Field
The invention relates to an overload protection device, in particular to a face tooth friction type telescopic torque limiter, and belongs to the technical field of mechanical transmission.
Background
The torque limiter is a mechanical overload protection device, is usually installed between a driving side and a load side of a power transmission, and once overload occurs, a transmission torque exceeds a set value, and then disengagement or slipping occurs, so that a driving side and a driven side of the power transmission are separated, and mechanical equipment is prevented from being damaged by the overload.
The friction torque limiter is one of torque limiters, and in the existing patent technologies, such as chinese patents CN201220405669, CN201520830097 and CN 20161801801809, as long as the friction torque limiter is a friction pair, the friction pair is composed of a friction plate and a sprocket, and the friction plate becomes one of the essential features of the friction torque limiter.
The friction coefficient of the friction plate is changed along with the change of the use time and the use working condition, the stability is relatively poor, particularly, the friction coefficient is seriously influenced by high temperature, and the friction coefficient begins to drop due to the rapid rise of the temperature of a friction material in the friction process, generally reaching more than 200 ℃, so that the limit torque of the torque limiter is unstable and unreliable, and meanwhile, the friction plate belongs to a consumable part, so the service life is generally short; in the process of slipping, 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 an end face tooth friction type telescopic torque limiter which is simple in structure, stable and reliable in torque limiting, telescopic, long in service life and small in environmental influence.
In order to solve the technical problem, the end face tooth friction type telescopic torque 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 used for outputting power is sleeved on the first shaft sleeve in a hollow manner, the first shaft sleeve and the second shaft sleeve are coaxially arranged and can transmit the torque of the first shaft sleeve to the second shaft sleeve by the chain wheel to realize the power transmission, the transmission device comprises a driven side transmission part, wherein a gear sleeve is arranged on at least one side of a chain wheel, end face teeth matched with each other are arranged on opposite surfaces of the chain wheel and the gear sleeve, a pressing plate which is also arranged on a first shaft sleeve is arranged on the outer side of the gear sleeve, an adjusting nut is also 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 extruding the pressing plate towards the direction of the chain wheel and can adjust the spring force of the belleville spring by utilizing the movement of the.
The second shaft sleeve comprises a mounting end and a gear tooth end integrally arranged on the mounting end, and the gear tooth ends are arranged on one side of the chain wheel teeth side by side.
Two sides of the chain wheel are respectively provided with a gear sleeve, the two gear sleeves are respectively provided with end face teeth matched with the chain wheel, a pressing plate is pressed on the outer side of one gear sleeve, and the other gear sleeve is pressed on a shaft shoulder of the first shaft sleeve.
And a self-lubricating copper sleeve is arranged between the chain wheel and the first shaft sleeve.
The chain wheel is provided with inner end face teeth, and the two tooth sleeves are provided with outer end face teeth.
The adjusting nut is in threaded connection with the first shaft sleeve, and 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.
After the structure is adopted, because two shaft sleeves which are arranged side by side and carry out torque transmission through gear teeth, a gear sleeve which is arranged on one side of a chain wheel on the first shaft sleeve and is matched with the chain wheel and is provided with end face teeth, and a pressing plate and a belleville spring which are pressed against the outer side of the gear sleeve, the prior friction plate structure is removed, the chain wheel transmits the torque to the second shaft sleeve through a double-row chain, the driving side transmission and the driven side transmission of power transmission are realized, in the process of transmitting the torque, the torque limiter can stretch out and draw back within a certain range in the axial direction, meanwhile, the end face teeth meshing between the chain wheel with the end face teeth and the gear sleeve with the end face teeth is utilized to realize the friction pair function, the spring force of the belleville spring is adjusted by utilizing the movement of an adjusting nut on the shaft sleeve, the defects that the friction coefficient of the traditional friction plate changes along with the use time and, the friction material has the advantages that in the friction process, due to the defects of rapid temperature rise, obvious temperature drop and the like, the friction material is reliable in matching and matching, the friction coefficient is stable, in the torque limiting process, the driving side and the driven side of power transmission can stretch out and draw back in a certain range in the axial direction, the torque limiting stability and reliability are greatly improved, the friction coefficient is stable when the friction material is influenced by temperature, vibration, lubricating oil and the like, the tooth sleeve and the chain wheel are long in service life, the economy is good, meanwhile, the friction coefficient is stable, and the friction material is simple in structure and easy to achieve.
Drawings
FIG. 1 is a schematic view of a face tooth friction type retractable torque limiter in half section according to the present invention;
FIG. 2 is a side elevational schematic view of the sprocket of the present invention;
FIG. 3 is a partial cross-sectional view of the sprocket without the inner chainring of the present invention;
FIG. 4 is a partial cross-sectional view of the sprocket having an inner sprocket of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
The first embodiment is as follows:
as shown in the figures, the end face tooth friction type telescopic torque limiter of the embodiment comprises a first shaft sleeve 1 installed on one of the transmission shafts and a second shaft sleeve 10 installed on the other transmission shaft, a chain wheel 6 used for outputting power is sleeved on the first shaft sleeve 1 in an empty manner, a self-lubricating copper sleeve 7 is installed 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 an installation end and a wheel tooth end integrally arranged on the installation end, a tapered groove is formed in the wheel tooth end, wheel teeth are arranged on the periphery of the wheel tooth end, one end of the first shaft sleeve 1 extends into the tapered groove, the wheel tooth ends are arranged on one side of the chain wheel teeth side by side, double-row chains are installed on the wheel tooth end and the chain wheel teeth, a gear sleeve 5 is arranged on one side of the chain wheel 6, end face teeth matched with the opposite surfaces of the gear sleeve 5 are arranged on the chain 6, a pressing plate, an adjusting nut 2 is further mounted on the first shaft sleeve 1, the adjusting nut 2 is in threaded connection with the first shaft sleeve 1, scales used for expressing the corresponding relation between the rotating angle and the spring force value are arranged on the end face of the adjusting nut 2, a belleville spring 3 is arranged between a pressing plate 4 and the adjusting nut 2, the belleville spring 3 is used for extruding the pressing plate towards a chain wheel 6 direction and can adjust the spring force of the belleville spring by utilizing the movement of the adjusting nut 2 on the first shaft sleeve 1, the chain wheel transmits torque to the second shaft sleeve through a double-row chain, the transmission of the driving side and the driven side of power transmission is achieved, and meanwhile in the process of transmitting the torque, the torque limiter can stretch out and draw back within a certain axial range.
Example two:
the end face tooth friction type telescopic torque limiter comprises a first shaft sleeve 1 installed on one transmission shaft and a second shaft sleeve 10 installed on the other transmission shaft, a chain wheel 6 used for outputting power is sleeved on the first shaft sleeve 1 in an empty mode, a self-lubricating copper sleeve 7 can be installed 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 an installation end and a wheel tooth end integrally arranged on the installation end, a tapered groove is formed in the wheel tooth end, wheel teeth are arranged on the periphery of the wheel tooth end, one end of the first shaft sleeve 1 extends into the tapered groove, the wheel tooth ends are arranged on one side of the chain wheel teeth side by side, double-row chains are installed on the wheel tooth end and the chain wheel teeth, one gear sleeve 5 is respectively arranged on the left side and the right side of the chain wheel 6 according to the size of required limiting torque, and the two gear sleeves 5 are called as a first gear sleeve, end face teeth matched with the chain wheel 6 are arranged between the opposite matching surfaces of the two gear sleeves 5 and the chain wheel 6, namely, the first gear sleeve and the second gear sleeve are arranged on two sides of the chain wheel and are arranged on the first shaft sleeve; first gear sleeve and second gear sleeve play the effect of transmission axle sleeve 1 and 8 within a definite time movements of sprocket, the frictional force that produces on the complex terminal surface tooth because of the effect of packing force when compressing tightly sprocket 6 through first gear sleeve and second gear sleeve transmits the sprocket 6 with the moment of torsion, the transmission shaft rotates, and in case the overload appears, first gear sleeve and second gear sleeve will take place to skid on the complex terminal surface tooth with sprocket 6, sprocket 6 will no longer transmit the moment of torsion, the transmission shaft idleness or stop.
In fact, the second gear sleeve is optional, depending on the required limiting torque, if the end face teeth meshing of the first gear sleeve and the chain wheel can meet the required limiting torque value, the second gear sleeve can be eliminated, in order to make the structure simple, the chain wheel 6 is arranged as the inner end face teeth in the embodiment, the two gear sleeves 5 are arranged as the outer end face teeth, so that the chain wheel, the first gear sleeve and the second gear sleeve form the end face teeth meshing to realize the friction pair function, the outer side of the first gear sleeve is provided with a pressing plate 4, the pressing plate is arranged on the connecting shaft sleeve, the outer side of the pressing plate 4 is provided with a belleville spring 3, namely, the pressing plate 4 is pressed towards the chain wheel 6 through the belleville spring 3, 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 and abuts against the spring along the direction of the chain wheel, the end face of the adjusting nut 2 is provided, the butterfly spring force is adjusted by the movement of the adjusting nut on the shaft sleeve, the chain wheel transmits the torque to the second shaft sleeve through the double-row chain, the driving and driven side transmission of power transmission is realized, in the torque transmission process, the torque limiter can stretch out and draw back within a certain range in the axial direction, the pressing plate is not arranged outside the second gear sleeve, the shaft sleeve is utilized to limit the shaft shoulder, the pressing plate 4 and the shaft shoulder of the first shaft sleeve 1 extrude the first gear sleeve 5 and the second gear sleeve 8 oppositely, and therefore the first gear sleeve 5 and the second gear sleeve 8 compress the chain wheel 6.
Furthermore, the number of the belleville springs is determined by the limited torque value, and other springs meeting the force value requirement, such as ripple springs and the like, can be selected.
Example three:
as shown in the figures, the end face tooth friction type telescopic torque limiter of the embodiment comprises a first shaft sleeve 1 installed on one transmission shaft and a second shaft sleeve 10 installed 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 chain wheel 6 for outputting power is sleeved on the first shaft sleeve 1 in the air, 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 installed 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 end integrally arranged on the mounting end, a tapered groove is formed at the gear end, gear teeth are arranged on the periphery of the gear end, one end of the first shaft sleeve 1 extends into the tapered groove, the gear teeth are arranged on one side of the chain wheel side by side, a double-row chain is installed on the gear end and the chain wheel, a ring groove is arranged on one side end face of the chain wheel 6, an inner gear disc 602 is installed in the ring groove through a fastener 601, a gear sleeve 5 matched with the inner gear disc 602 is arranged on one side of the chain wheel 6, preferably, the inner gear disc of the abrasion part is connected with the chain wheel main, the number of the screws and the cylindrical pins can be determined according to the calculation of torque, the chain wheel adopts a split structure, only the inner fluted disc of a wearing part needs to be replaced during maintenance, the chain wheel main body can be used for a long time after maintenance, the outer side of the toothed 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 for representing the corresponding relation between the rotating angle and the spring force value, a belleville spring 3 is arranged between the pressing plate 4 and the adjusting nut 2, the belleville spring 3 is used for extruding the pressing plate towards the direction of the chain wheel 6 and can adjust the spring force of the belleville spring by utilizing the movement of the adjusting nut 2 on the first shaft sleeve 1, meanwhile, in the process of limiting torque, because the first shaft sleeve and the, the belleville spring will be compressed or relaxed in the axial direction, thereby playing the role that the driving side and the driven side of the power transmission can be extended and contracted in a certain range in the axial direction.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement 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 scalable moment limiter of face tooth friction formula which characterized in that: the transmission device 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) used for outputting power is sleeved on the first shaft sleeve (1) in an empty mode, the first shaft sleeve (1) and the second shaft sleeve (10) are coaxially arranged, the moment of the first shaft sleeve (1) can be transmitted to the second shaft sleeve (10) through the chain wheel (6) to realize the transmission of the driving side and the driven side of the power transmission, at least one side of the chain wheel (6) is provided with a gear sleeve (5), the opposite surfaces of the chain wheel (6) and the gear sleeve (5) are provided with end face teeth which are matched with each other, the outer side of the gear sleeve (5) is provided with a pressing plate (4) which is also arranged on the first shaft sleeve, the first shaft sleeve (1) is also provided with an adjusting nut (2), and a butterfly spring (3) is arranged between the pressing, the belleville spring (3) is used for pressing the pressing plate towards the direction of the chain wheel (6) and can adjust the spring force of the belleville spring by utilizing the movement of the adjusting nut (2) on the first shaft sleeve (1).
2. A face tooth friction type retractable torque limiter according to claim 1 wherein: no. two axle sleeves (10) are including installation end and the integrative gear tooth end that sets up in the installation end, the gear tooth end sets up in one side of sprocket side by side, installs double-row chain on gear tooth end and the sprocket.
3. A face-tooth friction-type retractable torque limiter according to claim 1 or 2, wherein: two sides of the chain wheel (6) are respectively provided with a gear sleeve (5), the gear sleeves (5) are provided with end face teeth matched with the chain wheel (6), a pressing plate (4) is pressed on the outer side of one gear sleeve (5), and the other gear sleeve (5) is pressed on a shaft shoulder of the shaft sleeve.
4. A face tooth friction type retractable torque limiter according to claim 3 wherein: and 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 retractable torque limiter according to claim 3 wherein: the chain wheel (6) is provided with inner end face teeth, and the two gear sleeves (5) are provided with outer end face teeth.
6. A face-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 rotating angle and the spring force value are arranged on the end face of the adjusting nut (2).
7. A face tooth friction type retractable torque limiter according to claim 6 wherein: the chain wheel is characterized in that an annular groove is formed in the end face of the chain wheel (6), and an inner fluted disc (602) is installed in the annular groove through a fastening piece (601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822069593.3U CN211231351U (en) | 2018-12-10 | 2018-12-10 | End face tooth friction type telescopic torque limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822069593.3U CN211231351U (en) | 2018-12-10 | 2018-12-10 | End face tooth friction type telescopic torque limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211231351U true CN211231351U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822069593.3U Withdrawn - After Issue CN211231351U (en) | 2018-12-10 | 2018-12-10 | End face tooth friction type telescopic torque limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211231351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538656A (en) * | 2018-12-10 | 2019-03-29 | 镇江市高等专科学校 | A kind of frictional scalable limiter of moment of end-tooth |
-
2018
- 2018-12-10 CN CN201822069593.3U patent/CN211231351U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538656A (en) * | 2018-12-10 | 2019-03-29 | 镇江市高等专科学校 | A kind of frictional scalable limiter of moment of end-tooth |
| CN109538656B (en) * | 2018-12-10 | 2024-06-11 | 镇江市高等专科学校 | End face tooth friction type telescopic moment limiter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200811 Effective date of abandoning: 20240611 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200811 Effective date of abandoning: 20240611 |