CN109519488A - A kind of scalable limiter of moment of conical-surface friction type - Google Patents
A kind of scalable limiter of moment of conical-surface friction type Download PDFInfo
- Publication number
- CN109519488A CN109519488A CN201811502967.4A CN201811502967A CN109519488A CN 109519488 A CN109519488 A CN 109519488A CN 201811502967 A CN201811502967 A CN 201811502967A CN 109519488 A CN109519488 A CN 109519488A
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- CN
- China
- Prior art keywords
- sprocket wheel
- axle sleeve
- sleeve
- coning
- moment
- 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.)
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- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 10
- 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
- 230000000452 restraining effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002783 friction material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- 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 kind of scalable limiters of moment of conical-surface friction type.It includes No.1 axle sleeve and No. two axle sleeves, sprocket wheel is set on No.1 axle sleeve, No.1 axle sleeve and No. two axle sleeve coaxial arrangements, the side of sprocket wheel is at least provided with coning sleeve, internal taper and external taper is arranged in the opposite face of sprocket wheel and coning sleeve, the pressing plate being similarly installed on axle sleeve is provided on the outside of coning sleeve, adjusting nut is also equipped on No.1 axle sleeve, butterfly spring is mounted between pressing plate and adjusting nut, butterfly spring be used to squeeze pressing plate to sprocket wheel direction and can be adjusted the spring force of butterfly spring using adjusting nut.After adopting the above structure, it cooperates cooperation reliable, during restraining moment, powerdriven active and passive side can stretch in axial a certain range, substantially increase the stability and reliability of torque limitation, coning sleeve and sprocket wheel long service life, the stable friction factor that good economy performance is realized simultaneously, it is influenced by temperature minimum, has the advantages of simple structure and easy realization simultaneously.
Description
Technical field
The present invention relates to a kind of overload protection arrangements, the specifically scalable limiter of moment of conical-surface friction type, belong to
Technical field of mechanical transmission.
Background technique
Limiter of moment is a kind of mechanical overload protection device, is usually used in being mounted on powerdriven driving side and load
Between side, once overload, transmitting torque be more than setting value, disengagement or skidding will be generated, thus make powerdriven master,
Passive side separation, damages mechanical equipment from overload.
Frictional limiter of moment is one of limiter of moment, in existing patented technology, such as
In the Chinese patent of CN201220405669, CN201520830097, CN201620161809, as long as frictional torque limitation
Device, friction pair therein is made of friction plate and sprocket wheel, with friction plate become such frictional limiter of moment must
One of standby feature.
The coefficient of friction of friction plate often changes with the variation for using time, applying working condition, and stability is relatively poor,
Especially coefficient of friction is affected by the high temperature than more serious, and friction material is in friction process, due to the rapid raising of temperature, one
As temperature up to 200 DEG C or more, coefficient of friction is begun to decline, unstable so as to cause the restraining moment of limiter of moment, unreliable,
Simultaneously because friction plate belongs to attrition component, service life is generally shorter；During skidding, it is also easy to produce a large amount of micro mist,
Pollute environment.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of structure is simple, restraining moment is reliable and stable, scalable and make
It is long with the service life, the scalable limiter of moment of the minimum conical-surface friction type of effect on environment.
In order to solve the above-mentioned technical problem, the scalable limiter of moment of conical-surface friction type of the invention, including it is mounted on it
In No.1 axle sleeve on a transmission shaft and No. two axle sleeves being mounted on an other transmission shaft, be set with use on No.1 axle sleeve
In the sprocket wheel of output power, No.1 axle sleeve and No. two axle sleeves are coaxially disposed and can transmit the torque of No.1 axle sleeve by sprocket wheel
Powerdriven active and passive side transmitting is realized on to No. two axle sleeves, and the side of sprocket wheel is at least provided with coning sleeve, sprocket wheel and cone
The opposite face of degree set is provided with mutually matched internal taper and external taper, is provided with and is similarly installed on axle sleeve on the outside of coning sleeve
Pressing plate, be also equipped with adjusting nut on No.1 axle sleeve, butterfly spring, butterfly spring quilt be mounted between pressing plate and adjusting nut
For squeezing pressing plate to sprocket wheel direction and butterfly spring can be adjusted using movement of the adjusting nut on No.1 axle sleeve
Spring force.
No. two axle sleeves include the gear teeth end being wholely set on installation end and installation end, and the gear teeth end is arranged side by side
In the side of sprocket.
The two sides of the sprocket wheel are respectively arranged with a coning sleeve, and two coning sleeves are provided with and sprocket wheel phase interworking
The taper face of conjunction, one of coning sleeve outside are pressed with pressing plate, another coning sleeve is pressed on the shaft shoulder of No.1 axle sleeve.
The copper sheathing of self-lubricating is installed between the sprocket wheel and axle sleeve.
The sprocket wheel is set as internal taper, and two coning sleeves are set as external taper.
The adjusting nut, using being threadedly coupled, is provided on the end face of the adjusting nut for indicating rotation with axle sleeve
The scale of the corresponding relationship of angle and spring force value.
After above-mentioned structure, due to two axle sleeves and No.1 by gear teeth progress torque transmitting being arranged side by side
The side setting of axle sleeve upper sprocket wheel with the coning sleeve of the mutually matched taper face of sprocket wheel and the pressing plate being pressed on the outside of coning sleeve
And butterfly spring, existing friction plate structure is eliminated, sprocket wheel is transmitted torque on No. two axle sleeves by double strand chain, is realized dynamic
The active and passive side transmitting of power transmission, during transmitting torque, this limiter of moment can stretch in axial a certain range,
Meanwhile friction slave function is realized using the taper fit between the sprocket wheel with taper and the coning sleeve with taper, utilize adjustment spiral shell
Movement of the mother on axle sleeve adjusts the spring force of butterfly spring, when overcoming the coefficient of friction of conventional friction piece with using
Between, the variation of applying working condition and change, stability is relatively poor and coefficient of friction is affected by the high temperature than more serious, friction material
Material, due to the rapid raising of temperature, declines the disadvantages of obvious, cooperation cooperation is reliable, in restraining moment in friction process
In the process, powerdriven active and passive side can stretch in axial a certain range, substantially increase torque limitation stability and
Reliability, coning sleeve and sprocket wheel long service life, the stable friction factor that good economy performance is realized simultaneously, are influenced by temperature pole
It is small, it has the advantages of simple structure and easy realization simultaneously.
Detailed description of the invention
Fig. 1 is the half-sectional status diagram of the scalable limiter of moment of conical-surface friction type of the present invention；
Fig. 2 is the side structure schematic view of the scalable limiter of moment of conical-surface friction type of the present invention；
Fig. 3 is the sprocket wheel partial sectional view without inner conical drogue in the present invention；
Fig. 4 is the sprocket wheel partial sectional view for having inner conical drogue in the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
Embodiment one:
As shown, the scalable limiter of moment of the conical-surface friction type of the present embodiment, including be installed therein on a transmission shaft
No.1 axle sleeve 1 and No. two axle sleeves 10 being mounted on an other transmission shaft, be set with for output power on No.1 axle sleeve 1
Sprocket wheel 6, the copper sheathing 7 of self-lubricating is installed, No.1 axle sleeve 1 and No. two axle sleeves 10 are coaxially set between sprocket wheel 6 and No.1 axle sleeve 1
It sets, No. two axle sleeves 10 include the gear teeth end being wholely set on installation end and installation end, and gear teeth end is formed with cone tank, gear teeth end
Periphery there are the gear teeth, one end of No.1 axle sleeve 1 extend into cone tank, and gear teeth end is disposed side by side on the side of sprocket, wheel
Double strand chain is installed on increment and sprocket, the side of sprocket wheel 6 is provided with coning sleeve 5, the opposite face of sprocket wheel 6 and coning sleeve 5
It is provided with mutually matched internal taper and external taper, the outside of coning sleeve 5 is provided with the pressing plate being similarly installed on No.1 axle sleeve
4, it is also equipped with adjusting nut 2 on No.1 axle sleeve 1, adjusting nut 2 and axle sleeve 1 are using being threadedly coupled, on the end face of adjusting nut 2
It is provided with the scale for indicating the corresponding relationship of rotation angle and spring force value, is mounted with butterfly between pressing plate 4 and adjusting nut 2
Shape spring 3, butterfly spring 3 be used to squeeze pressing plate to 6 direction of sprocket wheel and can be using the adjusting nuts 2 in No.1 axle sleeve 1
On movement adjust the spring force of butterfly spring, sprocket wheel is transmitted torque on No. two axle sleeves by double strand chain, realize power
The active and passive side transmitting of transmission, while during transmitting torque, this limiter of moment can be stretched in axial a certain range
Contracting.
Embodiment two:
The scalable limiter of moment of the conical-surface friction type of the present embodiment, including the No.1 axle sleeve being installed therein on a transmission shaft
1 and No. two axle sleeves 10 being mounted on an other transmission shaft, the sprocket wheel 6 for output power, chain are set on No.1 axle sleeve 1
The copper sheathing 7 of self-lubricating can be installed between wheel 6 and No.1 axle sleeve 1, No.1 axle sleeve 1 and No. two axle sleeves 10 are coaxially disposed, and No. two
Axle sleeve 10 includes the gear teeth end being wholely set on installation end and installation end, and gear teeth end is formed with cone tank, the periphery of gear teeth end
With the gear teeth, one end of No.1 axle sleeve 1 is extend into cone tank, and gear teeth end is disposed side by side on the side of sprocket, gear teeth end and
Double strand chain is installed, the size of the restraining moment depending on needed for is respectively arranged with a taper in the left and right sides of sprocket wheel 6 on sprocket
Set 5, referred to as two 5 first coning sleeves of coning sleeve and the second coning sleeve, the opposite mating surface of two coning sleeves 5 and sprocket wheel 6
Between be provided with and the mutually matched taper face of sprocket wheel 6, that is to say, that the first coning sleeve and the second coning sleeve separation sprocket wheel
Two sides are arranged and are installed on No.1 axle sleeve；First coning sleeve and the second coning sleeve play to be moved between transmitting axle sleeve 1 and sprocket wheel 8
Effect, because acting in the taper face of cooperation for pressing force generates when compressing sprocket wheel 6 by the first coning sleeve and the second coning sleeve
Frictional force transfer torque to sprocket wheel 6, transmission shaft rotation, and once overloading, the first coning sleeve and the second coning sleeve with
Sprocket wheel 6 will skid on the cooperation conical surface, and sprocket wheel 6 will no longer transmit torque, transmission shaft idle running or stopping.
In fact, the second coning sleeve be it is optional, needed for depending on restraining moment, such as taper of the first coning sleeve and sprocket wheel
Cooperation limits moment values needed for being able to satisfy, and the second coning sleeve can be cancelled, to keep structure simple, described sprocket wheel in the present embodiment
6 are set as internal taper, and two coning sleeves 5 are disposed as external taper, to make sprocket wheel and the first coning sleeve and the second coning sleeve shape
Tapering cooperates realization friction slave function, pressing plate 4 is equipped on the outside of the first coning sleeve, and pressing plate is loaded in coupling sleeve, outside pressing plate 4
Side is equipped with butterfly spring 3, i.e., squeezes pressing plate 4 to 6 direction of sprocket wheel by butterfly spring 3, be also equipped with adjusting nut 2 on axle sleeve 1,
Adjusting nut 2 and axle sleeve 1 are using being threadedly coupled and adjusting nut edge to sprocket wheel direction abuts against spring, the end face of adjusting nut 2
On be provided with for indicate rotation angle and spring force value corresponding relationship scale, utilize movement of the adjusting nut on axle sleeve
Butterfly spring power is adjusted, sprocket wheel transmitted torque on No. two axle sleeves by double strand chain, realizes powerdriven active and passive side
Transmitting, during transmitting torque, this limiter of moment can stretch in axial a certain range, can not on the outside of the second coning sleeve
If pressing plate, the shaft shoulder is carried using axle sleeve and is limited, pressing plate 4 and 1 shaft shoulder of No.1 axle sleeve squeeze the first coning sleeve 5 and the second taper in opposite directions
Set 8, so that the first coning sleeve 5 and the second coning sleeve 8 be made to compress sprocket wheel 6.
Further, the quantity of described butterfly spring meets force value by remaining can be selected depending on the moment values that limit and wants
The spring asked, such as ripple spring.
Embodiment three:
As shown, the scalable limiter of moment of the conical-surface friction type of the present embodiment, including be installed therein on a transmission shaft
No.1 axle sleeve 1 and No. two axle sleeves 10 being mounted on an other transmission shaft, No.1 axle sleeve 1 be provided with keyway and for locking
Threaded hole, No. two axle sleeves 10 are equally provided with keyway and the threaded hole for locking；It is set on No.1 axle sleeve 1 for output power
Sprocket wheel 6, i.e. the movement of No.1 axle sleeve 1 cannot be directly passed to sprocket wheel 6, be equipped with self-lubricating between sprocket wheel 6 and No.1 axle sleeve 1
Copper sheathing 7, No.1 axle sleeve 1 and No. two axle sleeves 10 are coaxially disposed, and No. two axle sleeves 10 include integrally setting on installation end and installation end
The gear teeth end set, gear teeth end are formed with cone tank, and the periphery of gear teeth end has the gear teeth, and one end of No.1 axle sleeve 1 extend into taper
In slot, gear teeth end is disposed side by side on the side of sprocket, and double strand chain, a side of sprocket wheel 6 are equipped on gear teeth end and sprocket
It is provided with annular groove on face, inner conical drogue 602 is equipped with by fastener 601 in annular groove, be provided with and inner conical drogue in the side of sprocket wheel 6
The coning sleeve 5 of 602 cooperations, it is preferable that wear part inner conical drogue is connected with sprocket body using screw, while also using straight pin
The quantity of the shearing force of receiving circumferencial direction, screw and straight pin can determine that sprocket wheel is adopted a split structure according to torque arithmetic,
When maintenance, wear part inner conical drogue is only needed to change, can be used for a long time after sprocket body maintenance, the outside of coning sleeve 5 is provided with equally
The pressing plate 4 being mounted on axle sleeve, adjusting nut 2 is also equipped on No.1 axle sleeve 1, and adjusting nut 2 and No.1 axle sleeve 1 use screw thread
It connects, the scale for indicating the corresponding relationship of rotation angle and spring force value, pressing plate 4 is provided on the end face of adjusting nut 2
Butterfly spring 3 is mounted between adjusting nut 2, butterfly spring 3 be used to squeeze pressing plate to 6 direction of sprocket wheel and can utilize institute
Movement of the adjusting nut 2 on axle sleeve 1 is stated to adjust the spring force of butterfly spring, active and passive side No.1 axle sleeve and No. two axle sleeves
It not being rigidly connected directly, such as is influenced by temperature there are when Axial Loads, butterfly spring will compress in the axial direction or loosen,
To play the effect that powerdriven active and passive side can stretch in axial a certain range.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of scalable limiter of moment of conical-surface friction type, it is characterised in that: including being installed therein on a transmission shaft
No.1 axle sleeve (1) and No. two axle sleeves (10) being mounted on an other transmission shaft, No.1 axle sleeve are set on (1) for exporting
The sprocket wheel (6) of power, the No.1 axle sleeve (1) and No. two axle sleeve (10) coaxial arrangements simultaneously can be by the torques of No.1 axle sleeve (1)
It is transmitted on No. two axle sleeves (10) by sprocket wheel (6) and realizes powerdriven active and passive side transmitting, at least one in sprocket wheel (6)
Side is provided with coning sleeve (5), and the opposite face of the sprocket wheel (6) and coning sleeve (5) is provided with mutually matched internal taper and outer cone
It spends, is provided with the pressing plate (4) being similarly installed on axle sleeve on the outside of the coning sleeve (5), is also installed on the No.1 axle sleeve (1)
Have adjusting nut (2), is mounted with butterfly spring (3) between the pressing plate (4) and adjusting nut (2), butterfly spring (3) quilt
For squeezing pressing plate to sprocket wheel (6) direction and can be adjusted using movement of the adjusting nut (2) on No.1 axle sleeve (1)
The spring force of butterfly spring.
2. the scalable limiter of moment of conical-surface friction type described in accordance with the claim 1, it is characterised in that: No. two axle sleeves
It (10) include the gear teeth end being wholely set on installation end and installation end, the gear teeth end is disposed side by side on the side of sprocket,
Double strand chain is installed on gear teeth end and sprocket.
3. the scalable limiter of moment of conical-surface friction type according to claim 1 or 2, it is characterised in that: the sprocket wheel (6)
Two sides be respectively arranged with a coning sleeve (5), two coning sleeves (5) are provided with and sprocket wheel (6) mutually matched cone
Degree face, one of coning sleeve (5) outside are pressed with pressing plate (4), another coning sleeve (5) is pressed over the shaft shoulder of No.1 axle sleeve
On.
4. according to the scalable limiter of moment of conical-surface friction type described in claim 1,2 or 3, it is characterised in that: the sprocket wheel
(6) copper sheathing (7) of self-lubricating is installed between axle sleeve (1).
5. the scalable limiter of moment of conical-surface friction type described in accordance with the claim 3, it is characterised in that: the sprocket wheel (6) sets
It is set to internal taper, two coning sleeves (5) are set as external taper.
6. according to the scalable limiter of moment of conical-surface friction type described in claim 1,2 or 5, it is characterised in that: the adjustment
Nut (2) and axle sleeve (1) using being threadedly coupled, be provided on the end face of the adjusting nut (2) for indicate rotation angle with
The scale of the corresponding relationship of spring force value.
7. the scalable limiter of moment of conical-surface friction type according to claim 6, it is characterised in that: the sprocket wheel (6)
It is provided with annular groove on end face, passes through fastener (601) in the annular groove and inner conical drogue (602) is installed.
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 true CN109519488A (en) | 2019-03-26 |
| CN109519488B CN109519488B (en) | 2024-07-02 |
Family
ID=65795324
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109519488B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060287157A1 (en) * | 2005-06-17 | 2006-12-21 | Shinichi Katoh | 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 |
| 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 |
| CN211231350U (en) * | 2018-12-10 | 2020-08-11 | 镇江市高等专科学校 | Conical surface friction type telescopic torque limiter |
-
2018
- 2018-12-10 CN CN201811502967.4A patent/CN109519488B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060287157A1 (en) * | 2005-06-17 | 2006-12-21 | Shinichi Katoh | 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 |
| 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 |
| CN211231350U (en) * | 2018-12-10 | 2020-08-11 | 镇江市高等专科学校 | Conical surface friction type telescopic torque limiter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109519488B (en) | 2024-07-02 |
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