[go: up one dir, main page]

CN210128029U - End face tooth friction type torque limiter - Google Patents

End face tooth friction type torque limiter Download PDF

Info

Publication number
CN210128029U
CN210128029U CN201822070913.7U CN201822070913U CN210128029U CN 210128029 U CN210128029 U CN 210128029U CN 201822070913 U CN201822070913 U CN 201822070913U CN 210128029 U CN210128029 U CN 210128029U
Authority
CN
China
Prior art keywords
chain wheel
sleeve
shaft sleeve
face
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201822070913.7U
Other languages
Chinese (zh)
Inventor
赵飞
阚亚雄
兴百宪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhenjiang College
Original Assignee
Zhenjiang College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhenjiang College filed Critical Zhenjiang College
Priority to CN201822070913.7U priority Critical patent/CN210128029U/en
Application granted granted Critical
Publication of CN210128029U publication Critical patent/CN210128029U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

The utility model discloses an end face tooth friction formula moment limiter. The chain wheel transmission mechanism comprises a shaft sleeve arranged on a transmission shaft and a chain wheel which is sleeved on the shaft sleeve in an empty mode and is directly used for outputting power, a gear sleeve is arranged on at least one side of the chain wheel, end face teeth which are 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 the shaft sleeve is arranged on the outer side of the gear sleeve, an adjusting nut is further arranged on the 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. After the structure is adopted, the matching and matching are reliable, the friction coefficient is stable, the stability and the reliability of torque limitation are greatly improved, the influence of temperature, vibration, lubricating oil and the like is extremely small, the service life is long, the influence on the environment is extremely small, and meanwhile, the structure is simple and easy to realize.

Description

End face tooth friction type torque limiter
Technical Field
The invention relates to an overload protection device, in particular to an end face tooth friction type 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 torque limiter which is simple in structure, stable and reliable in torque limiting, small in vibration, long in service life and small in environmental influence.
In order to solve the technical problem, the end face tooth friction type torque limiter comprises a shaft sleeve arranged on a transmission shaft and a chain wheel which is sleeved on the shaft sleeve in an empty mode and is directly used for outputting power, a tooth sleeve is arranged on at least one side of the chain wheel, end face teeth which are matched with each other are arranged on opposite surfaces 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 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.
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 shaft sleeve.
And a self-lubricating copper sleeve is arranged between the chain wheel and the 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 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.
The chain wheel is characterized in that an annular groove is formed in the end face of the chain wheel, and an inner fluted disc is installed in the annular groove through a fastening piece.
After the structure is adopted, the gear sleeve which is arranged on one side of the chain wheel and is matched with the chain wheel and is provided with the end face teeth, the pressing plate and the belleville spring which are pressed on the outer side of the gear sleeve are removed, the prior friction plate structure is removed, 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 the adjusting nut on the shaft sleeve, the defects that the friction coefficient of the traditional friction plate changes along with the change of the service time and the service condition, the stability is relatively poor, the friction coefficient is seriously influenced by high temperature, the friction material is rapidly increased and obviously reduced in the friction process, the matching and the friction coefficient are reliable, the friction coefficient is stable, the stability and the reliability of torque limitation are greatly improved, the influences of temperature, vibration, lubricating oil and, the environment is little influenced, and meanwhile, the structure is simple and easy to realize.
Drawings
FIG. 1 is a schematic view of a face tooth friction torque limiter according to the present invention in half section;
FIG. 2 is a schematic end 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 figure, the end face tooth friction type torque limiter of the embodiment comprises a shaft sleeve 1 arranged on a transmission shaft and a chain wheel 6 which is sleeved on the shaft sleeve in an empty way and is directly used for outputting power, a self-lubricating copper sleeve 7 is arranged between the chain wheel 6 and the shaft sleeve 1, the chain wheel structure comprises a chain wheel 6, a gear sleeve 5 is arranged on one side of the chain wheel 6, end face teeth matched with each other are arranged on opposite faces of the chain wheel 6 and the gear sleeve 5, a pressing plate 4 installed on a shaft sleeve is arranged on the outer side of the gear sleeve 5, an adjusting nut 2 is further installed on the shaft sleeve 1, the adjusting nut 2 is in threaded connection with the shaft sleeve 1, scales used for expressing the corresponding relation between a rotating angle and a spring force value are arranged on the end face of the adjusting nut 2, a butterfly spring 3 is arranged between the pressing plate 4 and the adjusting nut 2, and the butterfly 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.
Example two:
the end face tooth friction type torque limiter comprises a shaft sleeve 1 arranged on a transmission shaft and a chain wheel 6 which is sleeved on the shaft sleeve in an empty mode and used for outputting power, wherein a self-lubricating copper sleeve 7 is arranged between the chain wheel 6 and the shaft sleeve 1, a gear sleeve 5 is arranged on each of the left side and the right side of the chain wheel 6 according to the size of required limiting torque, the gear sleeves 5 are called as a first gear sleeve and a second gear sleeve, end face teeth which are matched with the chain wheel 6 are arranged between the opposite matching surfaces of the two gear sleeves 5 and the chain wheel 6, and the first gear sleeve and the second gear sleeve are arranged on the shaft sleeve in a split mode and are arranged on the two sides of the chain wheel; first tooth cover and second tooth cover play the effect of motion between transmission axle sleeve 1 and sprocket 8, transmit sprocket 6 with the moment of torsion because of the frictional force that the effect of packing force produced on the complex terminal surface tooth when pressing tight sprocket 6 through first tooth cover and second tooth cover, the transmission shaft rotates, and in case the overload appears, first tooth cover and second tooth cover 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 first gear sleeve and the sprocket have end face teeth matching to meet the required limiting torque value, the second gear sleeve can be eliminated, in order to make the structure simple, in this embodiment, the sprocket 6 is set as an inner end face tooth, both gear sleeves 5 are set as outer end face teeth, so that the sprocket and the first gear sleeve and the second gear sleeve form 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 mounted 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 sprocket 6 by the belleville spring 3, the shaft sleeve 1 is also provided with an adjusting nut 2, the adjusting nut 2 is in threaded connection with the shaft sleeve 1 and abuts against the spring along the direction of the sprocket, the end face of the adjusting nut 2 is provided with a scale for representing the, the butterfly spring force is adjusted by moving the adjusting nut on the shaft sleeve, the pressing plate can be omitted outside the second gear sleeve, the shaft sleeve is limited by the shaft sleeve with a shaft shoulder, and the pressing plate 4 and the shaft shoulder of the shaft sleeve 1 extrude the first gear sleeve 5 and the second gear sleeve 8 oppositely, so that the first gear sleeve 5 and the second gear sleeve 8 press 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 torque limiter of the embodiment comprises a shaft sleeve 1 arranged on a transmission shaft and a chain wheel 6 which is sleeved on the shaft sleeve in an empty mode and used for outputting power, namely the motion of the shaft sleeve 1 cannot be directly transmitted to the chain wheel 6, and the shaft sleeve 1 is provided with a key groove and a threaded hole used for locking; a self-lubricating copper sleeve 7 is arranged between the chain wheel 6 and the shaft sleeve 1, a ring groove is arranged on one side end face of the chain wheel 6, an inner fluted disc 602 is arranged in the ring groove through a fastening piece 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 the wearing part is connected with the chain wheel main body through a screw, the circumferential shear force can be borne by a cylindrical pin 603, the number of the screw and the cylindrical pin can be determined according to the torque calculation, the chain wheel adopts a split structure, only the inner fluted disc of the wearing part needs to be replaced during maintenance, the chain wheel main body can be used for a long time after maintenance, the friction coefficient is stable, the influence of temperature is extremely small, a pressing plate 4 which is also arranged on the shaft sleeve is arranged on the outer side of the tooth sleeve 5, an adjusting nut 2 is also arranged on the shaft sleeve 1, the adjusting nut 2 is in threaded connection with, a belleville spring 3 is arranged between the pressure plate 4 and the adjusting nut 2, the belleville spring 3 is used for pressing the pressure 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 shaft sleeve 1.
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 (6)

1. A face tooth friction type torque limiter comprises a shaft sleeve (1) arranged on a transmission shaft and a chain wheel (6) which is sleeved on the shaft sleeve and is directly used for outputting power, and is characterized in that: at least one side of the chain wheel (6) is provided with a gear sleeve (5), 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 installed on the shaft sleeve, an adjusting nut (2) is further installed on the shaft sleeve (1), a belleville spring (3) is arranged between the pressing plate (4) and the adjusting nut (2), and 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 shaft sleeve (1.
2. A face tooth friction torque limiter according to claim 1 wherein: two sides of the chain wheel (6) are respectively provided with a gear sleeve (5), the gear sleeves (5) are respectively 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.
3. A face tooth friction torque limiter according to claim 1 or claim 2 wherein: and a self-lubricating copper sleeve (7) is arranged between the chain wheel (6) and the shaft sleeve (1).
4. A face tooth friction torque limiter according to claim 2 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.
5. A face tooth friction torque limiter according to claim 1, 2 or 4 wherein: the adjusting nut (2) is in threaded connection with the 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).
6. A face tooth friction torque limiter according to claim 5 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).
CN201822070913.7U 2018-12-10 2018-12-10 End face tooth friction type torque limiter Withdrawn - After Issue CN210128029U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822070913.7U CN210128029U (en) 2018-12-10 2018-12-10 End face tooth friction type torque limiter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822070913.7U CN210128029U (en) 2018-12-10 2018-12-10 End face tooth friction type torque limiter

Publications (1)

Publication Number Publication Date
CN210128029U true CN210128029U (en) 2020-03-06

Family

ID=69660598

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822070913.7U Withdrawn - After Issue CN210128029U (en) 2018-12-10 2018-12-10 End face tooth friction type torque limiter

Country Status (1)

Country Link
CN (1) CN210128029U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538655A (en) * 2018-12-10 2019-03-29 镇江市高等专科学校 A kind of frictional limiter of moment of end-tooth

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538655A (en) * 2018-12-10 2019-03-29 镇江市高等专科学校 A kind of frictional limiter of moment of end-tooth
CN109538655B (en) * 2018-12-10 2024-07-02 镇江市高等专科学校 End face tooth friction type moment limiter

Similar Documents

Publication Publication Date Title
US9476465B2 (en) Spatial wedging friction overrunning clutch
CN204164219U (en) A kind of step-by-step movement reseting torque limiter
CN210128029U (en) End face tooth friction type torque limiter
CN106050949A (en) Flexible torque increment coupler for soft start
CN210318250U (en) Conical surface friction type torque limiter
CN211231351U (en) End face tooth friction type telescopic torque limiter
WO2022100653A1 (en) Transmission system for aviation power
CN109538657B (en) Conical surface friction type moment limiter
CN201050562Y (en) Composite roller type isolator
CN211231350U (en) Conical surface friction type telescopic torque limiter
CN106594102B (en) Torque overload protection device
CN109538655B (en) End face tooth friction type moment limiter
CN2921435Y (en) friction torque limiter
CN109538656B (en) End face tooth friction type telescopic moment limiter
CN102537124A (en) Spatial-wedging friction coupling and spatial-wedging friction safety clutch
CN202301526U (en) Drum-shaped tooth type friction coupling
CN203239796U (en) Tension low-speed backstop
CN109519488B (en) Conical surface friction type telescopic moment limiter
CN203836137U (en) Gear
CN211015159U (en) Constant torque force controller
CN204164202U (en) A kind of limiter of moment with spring housing
CN212407369U (en) Take threshold value moment of torsion speed reducer
CN210600371U (en) Electric actuator with torque limiting function
CN107355491B (en) Reverse transmission self-locking mechanism and speed reducer manufactured by same
CN213541125U (en) Safety clutch of radar azimuth lock

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20200306

Effective date of abandoning: 20240702

AV01 Patent right actively abandoned

Granted publication date: 20200306

Effective date of abandoning: 20240702