CN107448491A - Foreign matter is involved in automatic disengaging shaft coupling - Google Patents
Foreign matter is involved in automatic disengaging shaft coupling Download PDFInfo
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- CN107448491A CN107448491A CN201710422757.3A CN201710422757A CN107448491A CN 107448491 A CN107448491 A CN 107448491A CN 201710422757 A CN201710422757 A CN 201710422757A CN 107448491 A CN107448491 A CN 107448491A
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- shaft coupling
- abnormal contact
- contact plate
- foreign matter
- involved
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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
- F16D9/00—Couplings with safety member for disconnecting, e.g. breaking or melting member
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention provides foreign matter to be involved in automatic disengaging shaft coupling, including shaft coupling inner ring, clutch block, couplings outside lane, abnormal contact plate, link gear and free rolling element, described shaft coupling inner ring and transmission axis connection, the circumferentially arranged multiple clutch blocks that can radially move in shaft coupling inner ring periphery, the outside of clutch block is connected with couplings outside lane, and shaft coupling inner ring is held/disengaged in the inner side of clutch block tightly；The described circumferentially arranged multiple abnormal contact plates in couplings outside lane periphery, abnormal contact plate is connected by link gear with clutch block, abnormal contact plate moves through linkage structure under the pressure effect of foreign matter and drives clutch block to disengage shaft coupling inner ring, cuts off the power transmission of power transmission shaft；The free rolling element it is free to rotate installed in the periphery of abnormal contact plate.The foreign matter of the present invention, which is involved in automatic disengaging shaft coupling, to be acted accordingly for different external force, to reach protection purpose.
Description
Technical field
The present invention relates to technical field of mechanical transmission, in particular it relates to which foreign matter is involved in automatic disengaging shaft coupling.
Background technology
Shaft coupling is to be allowed to common rotation for two axles (driving shaft and driven shaft) coupled in different institutions to transmit
The machine components of moment of torsion.Typically, shaft coupling is made up of two half parts, is respectively arranged on driving shaft and driven shaft, is a kind of fortune
With extremely widespread engine and working machine connection member.
Which kind of existing shaft coupling, either form, it is required to that coupler protective casing is installed in shaft coupling periphery, to prevent
People or foreign matter are involved in shaft coupling when rotating machinery is run, and cause casualties or device damage.But coupler protective casing is only
Limited protection can be provided, personnel or foreign matter are easily caused when shock dynamics exceedes protective cover ability to bear or protective cover loosens
Shaft coupling is involved in, is caused casualties or device damage.
In view of this, it is special to propose the present invention.
The content of the invention
It is an object of the invention to provide foreign matter to be involved in automatic disengaging shaft coupling, and in order to achieve the above object, the present invention adopts
With following technical scheme：
Foreign matter is involved in automatic disengaging shaft coupling, including shaft coupling inner ring, clutch block, couplings outside lane, abnormal contact plate,
Link gear and free rolling element, described shaft coupling inner ring and transmission axis connection, shaft coupling inner ring periphery are circumferentially arranged more
The individual clutch block that can radially move, the outside of clutch block are connected with couplings outside lane, inner side holding/disengagement of clutch block
Shaft coupling inner ring；The described circumferentially arranged multiple abnormal contact plates in couplings outside lane periphery, abnormal contact plate pass through gear
Structure is connected with clutch block, and abnormal contact plate moves through linkage structure under the pressure effect of foreign matter and drives clutch block to disengage connection
Axle device inner ring, cut off the power transmission of power transmission shaft；The free rolling element it is free to rotate be arranged on the outer of abnormal contact plate
Week.
Further, described free rolling element is to be set on the periphery of abnormal contact plate and can freely be rotated relative to it
Concentric sleeve.
Further, rolling mechanism is set between described concentric sleeve and abnormal contact plate so that concentric sleeve can phase
Abnormal contact plate is freely rotated.
Further, described rolling mechanism is bearing, the inner ring interference fit of the abnormal contact plate and bearing, described
The outer ring of bearing is interference fitted with concentric sleeve.
Further, described bearing includes multiple, is set respectively along being distributed in the axial direction of abnormal contact plate.
Further, described rolling mechanism is ball, is opened up on the periphery wall of the abnormal contact plate closed at both ends
Deep-slotted chip breaker, described ball is spacing in deep-slotted chip breaker and free to rotate, and ball is kept respectively with abnormal contact plate, concentric sleeve
Contact.
Further, described free rolling element is along the circumferentially distributed multiple rolling cylinders in the outer surface of abnormal contact plate
Body, the central axis of each rolling barrel and the centerline axis parallel of shaft coupling are set.
Further, in addition to the supporting construction that is fixed on the outer wall of abnormal contact plate, described rolling barrel can from
By the installation that rotates on the support structure.
Further, described supporting construction includes barrel support bar and drum shaft, one end of described barrel support bar
It is fixed on the outer wall of abnormal contact plate, the other end and cylinder axis connection；Described drum shaft and the central axis of shaft coupling are put down
Row is set；Described rolling barrel is rotatably arranged in drum shaft.
Further, described supporting construction includes barrel support bar and drum shaft, one end of described barrel support bar
It is fixed on the outer wall of abnormal contact plate, the other end and cylinder axis connection；Described drum shaft and the central axis of shaft coupling are put down
Row is set；Connection free to rotate, described rolling barrel are fixedly mounted between described drum shaft and barrel support bar
In drum shaft.
Further, described free rolling element is the soft elastic rolling cylinder in the outer surface made of elastomeric material；
Or the elastomer of soft surface is set on the outer surface of the free rolling element.
The couplings outside lane of the present invention installs free rolling element free to rotate additional, and shaft coupling is with contacting caused by article
Radial frictional force will cause the rotation of rolling barrel, and shaft coupling is converted into free rolling element with contacting the force of sliding friction of article
With contacting the force of rolling friction between article, i.e., the frictional force contacted under such a state between article and shaft coupling (free rolling element) is big
It is small to be equal to the power for maintaining free rolling element to rotate, the radial frictional force size that shaft coupling greatly reduced with contact article.
If the contact force between contact article and shaft coupling is larger, more than the ability of external free rolling element protection, due to
Abnormal contact plate is produced centripetal fortune by power internally, abnormal contact plate by abnormal contact plate connection rack is driven after the power
It is dynamic, internal gear rotation is driven, while drive clutch block connection rack to produce centrifugal motion, clutch block departs from shaft coupling inner ring,
Shaft coupling stops transmitting moment of torsion, and outer ring stops operating in the case where being involved in foreign matter effect.Because engine and working machine can use this
Kind of shaft coupling, after clutch block disengagement, the rotary inertia of only remaining shaft coupling, to being involved in the injury of personnel or foreign matter and its micro-
It is small, can farthest protection staff and equipment safety.
The foreign matter of the present invention is involved in automatic disengaging shaft coupling under by less foreign matter active force, by free rolling
Freely rotating for body can cut down the active force, avoid causing personnel to injure, and do not influence the normal work of shaft coupling；And work as
During by larger foreign matter active force, moved by abnormal contact plate and drive clutch block to be disengaged with shaft coupling inner ring, cut-out power passes
It is defeated, so as to realize protection purpose, avoid personnel from injuring.
Brief description of the drawings
The foreign matter of Fig. 1 embodiment of the present invention one is involved in the radial view of automatic disengaging shaft coupling；
The foreign matter of Fig. 2 embodiment of the present invention one is involved in automatic disengaging shaft coupling A-A direction views along Fig. 1；
The foreign matter of Fig. 3 embodiment of the present invention two is involved in the radial view of automatic disengaging shaft coupling；
The foreign matter of Fig. 4 embodiment of the present invention two is involved in automatic disengaging shaft coupling B-B direction view along Fig. 1；
The foreign matter of Fig. 5 embodiment of the present invention three is involved in the radial view of automatic disengaging shaft coupling.
Label declaration in accompanying drawing：Shaft end end plate 3- couplings outside lane 4- foreign matters connect in axle end bearing 2- shaft couplings in 1-
Touch panel 401- the first abnormal contact portion 402- the second abnormal contact portion 5- gear 6- abnormal contacts plate connection rack 7- elasticity
Compression set 8- universal joint 9- support bar groove 10- sliding groove 11- sliding groove support 12- clutch blocks connection rack 13- connection
Lever 14- key 15- outer shaft end bearing 16- clutch block 17- shaft coupling axially outer end end plate 18- limit sliding chutes 19- support bars
Concentric the first sleeve parts of the sleeve 2201- 2202- second sleeves portion 23- roller presses of 20- power transmission shaft 21- shaft coupling inner rings 22-
Structure 2301- the first rolling bearing 2302- the second rolling bearing 24- rolling barrel 25- barrel support bar 26- drum shafts.
Embodiment
Automatic disengaging shaft coupling is involved in foreign matter of the invention below in conjunction with the accompanying drawings to be described in detail：
Embodiment one
As shown in Figures 1 and 2, the foreign matter of the present embodiment is involved in automatic disengaging shaft coupling, including shaft coupling inner ring 21, from
Close block 16, couplings outside lane 3, abnormal contact plate 4 and link gear, described shaft coupling inner ring 21 to be connected with power transmission shaft 20, join
The circumferentially arranged multiple clutch blocks 16 that can radially move in the periphery of axle device inner ring 21, the outside of clutch block 16 and shaft coupling
Outer ring connects, and shaft coupling inner ring 21 is held/disengaged in the inner side of clutch block 16 tightly；The described periphery of couplings outside lane 3 is circumferentially arranged
Multiple abnormal contact plates 4, abnormal contact plate 4 are connected by link gear with clutch block 16, pressure of the abnormal contact plate 4 in foreign matter
Linkage structure is moved through under effect drives clutch block 16 to disengage shaft coupling inner ring 21, cuts off the power transmission of power transmission shaft 20.
The foreign matter of the present embodiment is involved in automatic disengaging shaft coupling and power between axle and axle is realized by two assembly connections
Transmission, the shaft coupling inner ring 21 that two foreign matters are involved in automatic disengaging shaft coupling are fixedly connected with two power transmission shafts respectively, then will
The couplings outside lane 3 of two shaft couplings is fixed together, and realizes that power transmits so as to which two power transmission shafts be connected as one.
The present embodiment sets up clutch block 16 between shaft coupling inner ring 21 and couplings outside lane 3, and shaft coupling is in inoperative feelings
Condition, it is uninstalled in the case of and normal working condition under, keep holding tightly between clutch block 16 and shaft coupling inner ring 21, clutch
Block 16 is connected with couplings outside lane 3 again simultaneously, so, ensures the synchronization action between shaft coupling inner ring 21 and couplings outside lane 3,
Realize that power transmits.
Further, the present embodiment sets abnormal contact plate 4 in the periphery of couplings outside lane 3, and abnormal contact plate 4 is with connection
The synchronous axial system of axle device outer ring 3, and abnormal contact plate 4 can stretching motion in radial directions, abnormal contact plate 4 is further through gear
Structure is connected with clutch block 16.When shaft coupling normal rotation, if having abnormal contact shaft coupling or being involved in shaft coupling, will lead
Abnormal contact plate 4 is caused to be produced centripetal motion by power internally, abnormal contact plate 4 by band carry-over bar after the power, pass through connection
Motivation structure drives clutch block 16 to produce centrifugal motion, and clutch block 16 disengages shaft coupling inner ring 21, and shaft coupling stops transmitting moment of torsion, connection
Axle device outer ring 3 stops operating in the case where being involved in foreign matter effect, because engine and working machine can use such a shaft coupling, in clutch
After block 16 disengages, the rotary inertia of only remaining both sides shaft coupling, can be maximum to being involved in the injury of personnel or foreign matter and its small
The protection staff and equipment safety of degree.
The link gear of the present embodiment is realized synchronously passes to clutch block 16 to drive its fortune by the motion of abnormal contact plate 4
Dynamic to disengage, therefore, link gear is to realize abnormal contact plate 4 and the transmission mechanism of the synchronous backward of clutch block 16 motion.
Link gear can be the modes such as jointed gear unit, gear drive.
Specifically, a kind of preferred embodiment as the present embodiment, the link gear described in the present embodiment include clutch
Block connection rack 12, gear 5 and abnormal contact plate connection rack 6, clutch block connection rack 12 constrain in clutch block by chute
On 16 outer wall, abnormal contact plate connection rack 6 is constrained in by chute on the inwall of abnormal contact plate 4, clutch block tooth connection
Bar 12, abnormal contact plate connection rack 6 with the engaged transmission of gear 5；The abnormal contact plate 4 foreign matter pressure effect under with
Abnormal contact plate connection rack 6 carries out centripetal motion together, and band moving gear 5 rotates, while drives clutch block connection rack 12 to enter
Row centrifugal motion, clutch block 16 disengage shaft coupling inner ring 21, cut off the power transmission of power transmission shaft 20.
The link gear of the present embodiment uses pinion and rack, in abnormal contact plate 4 by the centripetal motion of foreign matter pressure
When, abnormal contact plate connection rack 6 moves downward therewith, drives the gear 5 being engaged with to rotate clockwise, gear 5 drives again
The clutch block connection rack 12 being engaged with is moved upwards, and clutch block connection rack 12 is driven in the centrifugation of clutch block 16 and shaft coupling
Circle 21 disengages, so as to cut off the transmission of power.The link gear of the present embodiment is simple in construction, and effectively realizes abnormal contact
Plate 4 moves with the synchronous backward of clutch block 16, it is ensured that when there is foreign matter, clutch block 16 disengages immediately, cuts off power transmission, avoids
Casualties or device damage.
The present embodiment further discloses the specific assembly method of link gear, and specifically, described gear 5 is arranged on connection
It is spacing that outer ring is opened up on axle device outer ring 3 and between shaft coupling inner ring 21 and couplings outside lane 3, on the couplings outside lane 3
Chute 18, one end of abnormal contact plate connection rack 6 by the outer ring limit sliding chutes 18 extend into couplings outside lane 3 with
Gear engages.The outer ring limit sliding chutes 18 of the present embodiment can limit abnormal contact plate connection rack 6 and be fitted into, to limit foreign matter
Contact plate connection rack 6 only carries out slip radially in outer ring limit sliding chutes 18, to ensure that abnormal contact plate connects rack 6
Effective with gear 5 engages, synchronization action.
Further, elastic compression device 7 is set between the abnormal contact plate 4 and couplings outside lane 3 described in the present embodiment,
For keeping clutch block 16 to be held tightly under normal work/off working state with shaft coupling inner ring 21, the power of power transmission shaft 20 is realized
Transmit.It is compressive state that the elastic compression device 7 of the present embodiment, which is stored between abnormal contact plate 4 and couplings outside lane 3, so,
Keep abnormal contact plate 4 protruding, pull abnormal contact plate connection rack 6 outside, so as to gear 5 and clutch block tooth connection
The engagement of bar 12 ensures the holding between clutch block 16 and shaft coupling inner ring 21, to ensure the transmission of the power of power transmission shaft 20, ensures connection
The clutch of axle device, 16 when rotating mechanically activated with enough combination torque, rotate it is mechanically activated after, due to abnormal contact
The weight of plate 4 is more than clutch block 16, and the radius of turn of abnormal contact plate 4 is more than clutch block 16, the faster clutch block 16 of velocity of rotation
Pressure with shaft coupling inner ring 21 will be bigger, and with reference to will be closer, the torque that can be transmitted will be bigger.
Preferably, the elastic compression device 7 described in the present embodiment is compression spring, and compression spring is set in abnormal contact plate
Connect on rack 6, the both ends of compression spring are connected to couplings outside lane 3, on abnormal contact plate 4.
As a kind of preferred embodiment of the present embodiment, clutch block 16 and abnormal contact plate 4 one described in the present embodiment
One correspondence, connected respectively by link gear between the clutch block 16 and abnormal contact plate 4 of every a pair of opposing, each gear
Connected between structure by synchronization structure, after the action of any one abnormal contact plate, drive of whole link gears in lazy-tongs
Lower synchronization action, whole clutch blocks 16 disengage shaft coupling inner ring, cut off the power transmission of power transmission shaft 20.
The clutch block 16 of the present embodiment typically sets multiple, uniformly divides in the whole circumference of whole shaft coupling inner ring 21
Cloth, so, between clutch block 16 and shaft coupling inner ring 21 obvolvent be more uniformly distributed, power transmit it is more stable.So, correspond to therewith
The present embodiment multiple abnormal contact plates 4 are also provided with the periphery of couplings outside lane 3, in the whole week of whole couplings outside lane 3
It is uniformly distributed upwards, the corresponding clutch block 16 of each abnormal contact plate 4, so, any abnormal contact plate 4 is by foreign matter pressure
Power acts on, and corresponding clutch block 16 can disengage.The present embodiment is further connected each link gear by sychronisation,
So, any abnormal contact plate 4 is acted on by foreign matter pressure, and link gear acts simultaneously under the drive of lazy-tongs, real
Now whole clutch blocks 16 disengage shaft coupling inner rings 21, to ensure that the transmission of the power of power transmission shaft 20 is thoroughly cut off, improve reliability and
Security.
As shown in Fig. 2 the clutch block 16 of the present embodiment includes four pieces along the circumferentially distributed arc in the periphery of shaft coupling inner ring 21
Clutch block, the abnormal contact plate 4 of the present embodiment include four pieces along the circumferentially distributed arc in the periphery of couplings outside lane 3.
Further, the lazy-tongs described in the present embodiment include universal joint 8, gangbar 13 and support bar 19, adjacent
Two gears 5 are connected by both ends of the universal joint 8 respectively with same gangbar 13, and one end of support bar 19 is fixed on outside shaft coupling
On the inwall of circle 3, support bar groove 9 is set on the other end；The middle part limited support of described gangbar 13 in support bar groove 9,
Limit gangbar 13 and limit scope inner roller or slip.
Universal joint is universal joint, is the parts for realizing varied angle power transmission, for needing to change transmission axis direction
Position.
The foreign matter of the present embodiment is involved in automatic disengaging shaft coupling, in addition to be connected with the inwall of couplings outside lane 3 or
The sliding groove support 11 being connected with support bar 19, described clutch block connection rack 12 are installed in sliding groove support 11
In sliding groove 10, the glide direction of clutch block connection rack 12 is limited.
Described in the present embodiment between shaft coupling inner ring 21 and power transmission shaft 20 interference fit or key connection；The clutch block 16
It is connected between shaft coupling inner ring 21 by friction plate or lock banking stop connects.The shaft coupling inner ring 21 and power transmission shaft of the present embodiment
It is fixedly connected between 20 by key 14.
The radial direction for limiting couplings outside lane 3 and axial direction is fixedly mounted in the shaft end of couplings outside lane 3 described in the present embodiment
The shaft coupling shaft end end plate of position, axle end bearing is installed between shaft coupling shaft end end plate and power transmission shaft 20.The shaft coupling of the present embodiment
Shaft end end plate 2 and shaft coupling axially outer end end plate 17 in shaft coupling are installed in the both ends of device outer ring 3 respectively, shaft end in couplings outside lane 3
Axle end bearing 1 in installation, installs outer shaft end bearing between power transmission shaft 20 between shaft coupling axially outer end end plate 17 and power transmission shaft 20
15。
Embodiment two
The present embodiment further makes improvements on the basis of embodiment one, specifically：
As shown in Figures 3 and 4, the foreign matter of the present embodiment is involved in automatic disengaging shaft coupling, including shaft coupling inner ring 21, from
Close block 16, couplings outside lane 3, abnormal contact plate 4, link gear and free rolling element, described shaft coupling inner ring 21 and transmission
Axle 20 connects, the circumferentially arranged multiple clutch blocks 16 that can radially move in the periphery of shaft coupling inner ring 21, outside clutch block 16
Side is connected with couplings outside lane, and shaft coupling inner ring 21 is held/disengaged in the inner side of clutch block 16 tightly；The described periphery of couplings outside lane 3
Circumferentially arranged multiple abnormal contact plates 4, abnormal contact plate 4 are connected by link gear with clutch block 16, and abnormal contact plate 4 exists
Linkage structure is moved through under the pressure effect of foreign matter drives clutch block 16 to disengage shaft coupling inner ring 21, cut-out power transmission shaft 20
Power transmission；The free rolling element it is free to rotate installed in the periphery of abnormal contact plate.
As a kind of preferred embodiment of the present embodiment, described free rolling element is be set in abnormal contact plate outer
On week and the concentric sleeve 22 that can freely be rotated relative to it.
The foreign matter of the present embodiment be involved in automatic disengaging shaft coupling be arranged in the periphery of abnormal contact plate 4 it is free to rotate
Concentric sleeve 22, effectively can be converted into force of rolling friction by the force of sliding friction of abnormal contact, i.e., under such a state foreign matter with
Frictional force size between shaft coupling (concentric sleeve) is equal to the power for maintaining concentric sleeve to rotate, and will greatly reduce shaft coupling and foreign matter
Between radial frictional force, reduce the damage to shaft coupling and foreign matter.
The foreign matter of the present embodiment is involved in automatic disengaging shaft coupling under by less foreign matter active force, by concentric locking collar
Freely rotating and can cutting down the active force for cylinder, avoids causing personnel to injure, and do not influence the normal work of shaft coupling；And work as
During by larger foreign matter active force, moved by abnormal contact plate and drive clutch block to be disengaged with shaft coupling inner ring, cut-out power passes
It is defeated, so as to realize protection purpose, avoid personnel from injuring.
Freely rotated to realize the concentric sleeve 22 of the present embodiment to be set on abnormal contact plate 4, described in the present embodiment
Concentric sleeve and abnormal contact plate between rolling mechanism 23 is set so that concentric sleeve 22 can the relative freedom of abnormal contact plate 4
Rotate.
As an embodiment of the present embodiment, described rolling mechanism 23 is bearing, the abnormal contact plate 4 and axle
The inner ring interference fit held, the outer ring of the bearing is interference fitted with concentric sleeve 22.
Further, the bearing described in the present embodiment includes multiple, is set respectively along being distributed in the axial direction of abnormal contact plate 4
Put.So, it may be such that the rotation of concentric sleeve 22 more balances, avoid rotation deflection from causing the unstable of abnormal contact plate 4.
Specifically, the abnormal contact plate 4 described in the present embodiment includes being correspondingly arranged at the first of the periphery of shaft coupling inner ring 21
Abnormal contact portion 401 and the second abnormal contact portion 402 for being correspondingly arranged at the periphery of couplings outside lane 3；The first described foreign matter connects
First rolling bearing 2301 is set between contact portion 401 and concentric sleeve 22, between the second abnormal contact portion 402 and concentric sleeve 22
Second rolling bearing 2302 is set.
Further, the external diameter of shaft coupling inner ring 21 described in the present embodiment be less than couplings outside lane 3 external diameter, described first
The internal diameter in abnormal contact portion 401 is less than the internal diameter in the second abnormal contact portion 402, and described concentric sleeve 22 includes and the first foreign matter
The first sleeve part 2201 that contact site 401 matches and the second sleeve portion 2202 to match with the second abnormal contact portion 402,
The internal diameter of one sleeve part 2201 is less than the internal diameter in second sleeve portion 2202.
As the another embodiment of the present embodiment, the rolling mechanism described in the present embodiment is ball, and the foreign matter connects
Deep-slotted chip breaker closed at both ends is opened up on the periphery wall of touch panel 4, described ball is spacing in deep-slotted chip breaker and free to rotate, ball
Keep contacting respectively with abnormal contact plate 4, concentric sleeve 22.
Concentric sleeve 22 described in the present embodiment is the soft resilient sleeve in the outer surface made of elastomeric material；Or
The elastic nappe that soft surface is set on the outer surface of sleeve 22 with one heart.
As a kind of preferred embodiment of the present embodiment, removably installed on described concentric sleeve 22 for controlling
It freely rotates/static sleeve rotation control rod.Installation sleeve rotation control rod is considered whether according to the actual needs, i.e., should
Sleeve rotation control rod is directly connected with solid base, ensures that the concentric sleeve 22 of shaft coupling may be at rolling or static shape
State, further reduce the injury to contact personnel or object.
The present embodiment is arranged concentric sleeve 22 on the periphery of the abnormal contact plate 4 of shaft coupling, and the concentric sleeve 22 can be around
The cylinder axis of rolling freely rotates, while remaining directive constraint of institute in addition to circumferentially rotating direction by the cylinder axis of rolling.Together
Heart sleeve 22 produces the abnormal contact of CONTACT WITH FRICTION, i.e. shaft coupling by the abnormal contact plate 4 of several rolling bearings and shaft coupling
Clamp force be present between plate 4 and rolling bearing inner ring, its caused frictional force ensures concentric sleeve 22 under shaft coupling normal operating conditions
By other directive kinematic constraints of institute in addition to rotating coaxially.The quantity of rolling bearing can be according to the actual use feelings of shaft coupling
Condition is adjusted.
When shaft coupling normal rotation, if there is abnormal contact shaft coupling, shaft coupling radially rubs with contacting caused by article
The frictional force that power translates into concentric sleeve 22 is wiped, shaft coupling is converted into concentric sleeve with contacting the force of sliding friction of article
Force of rolling friction between 22 and abnormal contact plate 4, i.e., the frictional force size contacted under such a state between article and shaft coupling are equal to
Abnormal contact plate 4 and the power relatively rotated between concentric sleeve 22 are maintained, shaft coupling will be greatly reduced and rubbed with contacting the radial direction of article
Wipe power size.
Further, if abnormal contact strength is larger or foreign matter is involved in shaft coupling, will abnormal contact plate 4 by inside
The power in portion, abnormal contact plate 4 are driven internal gear rotation by driving abnormal contact plate connection rack to produce centripetal motion after the power
Turn, while drive clutch block connection rack to produce centrifugal motion, clutch block departs from shaft coupling inner ring, and shaft coupling, which stops transmitting, to be turned round
Square, couplings outside lane stops operating in the case where being involved in foreign matter effect, because engine and working machine can use such a shaft coupling,
After clutch block disengages, the rotary inertia of only remaining shaft coupling, can be with maximum journey to being involved in the injury of personnel or foreign matter and its small
The protection staff and equipment safety of degree.
In addition, bridging effect, shaft coupling itself existing bolt, engaging nail etc. of the sleeve 22 in shaft coupling periphery is prominent with one heart
Go out masking of the thing due to concentric sleeve 22, it is difficult to hook contact article, protective effect is formed to contact personnel and article.
The gear of the present embodiment shaft coupling, rack, abnormal contact plate, support and constraint, the quantity of clutch block, arrangement side
Formula, type can be changed, adjusted according to being actually needed.
Embodiment three
The present embodiment further makes improvements on the basis of embodiment one, specifically：
As shown in figure 5, the foreign matter of the present embodiment is involved in automatic disengaging shaft coupling, including shaft coupling inner ring 21, clutch block
16th, couplings outside lane 3, abnormal contact plate 4, link gear and free rolling element, described shaft coupling inner ring 21 and power transmission shaft 20
Connection, the circumferentially arranged multiple clutch blocks 16 that can radially move in the periphery of shaft coupling inner ring 21, the outside of clutch block 16 with
Couplings outside lane connects, and shaft coupling inner ring 21 is held/disengaged in the inner side of clutch block 16 tightly；Described couplings outside lane 3 is peripheral along week
To multiple abnormal contact plates 4 are set, abnormal contact plate 4 is connected by link gear with clutch block 16, and abnormal contact plate 4 is in foreign matter
Pressure effect under move through linkage structure and drive clutch block 16 to disengage shaft coupling inner ring 21, cut-out power transmission shaft 20 it is dynamic
Power transmission；The free rolling element it is free to rotate installed in the periphery of abnormal contact plate.
The free rolling element of the present embodiment be along the circumferentially distributed multiple rolling barrels 24 in the outer surface of abnormal contact plate,
The central axis of each rolling barrel 24 and the centerline axis parallel of shaft coupling are set.
When abnormal contact is to shaft coupling, force of sliding friction between the two causes rolling barrel 1 freely to rotate, and will slide
Frictional force is converted into force of rolling friction to reduce the radial forces to shaft coupling and foreign matter.
The foreign matter of the present invention is involved in automatic disengaging shaft coupling and rolling free to rotate is installed in the periphery of abnormal contact plate 4
Dynamic cylinder 24, effectively can be converted into force of rolling friction by the force of sliding friction of abnormal contact, i.e., foreign matter and connection under such a state
Frictional force size between axle device (rolling barrel 24) is equal to the power for maintaining rolling barrel 24 to rotate, will greatly reduce shaft coupling with it is different
Radial frictional force between thing, reduce the damage to shaft coupling and foreign matter.
The foreign matter of the present embodiment is involved in automatic disengaging shaft coupling under by less foreign matter active force, by rolling cylinder
Freely rotating for body 24 can cut down the active force, avoid causing personnel to injure, and do not influence the normal work of shaft coupling；
And when by larger foreign matter active force, moved by abnormal contact plate 4 and drive clutch block to be disengaged with shaft coupling inner ring, cut-out is dynamic
Power is transmitted, and so as to realize protection purpose, avoids personnel from injuring.
As a kind of preferred embodiment of the present invention, the foreign matter of the present embodiment, which is involved in automatic disengaging shaft coupling, also to be included
The supporting construction being fixed on the outer wall of abnormal contact plate 4, the support that is arranged on free to rotate of described rolling barrel 24 are tied
On structure.
Specifically, a kind of embodiment of the supporting construction of the present embodiment is：Described supporting construction includes barrel support
Bar 25 and drum shaft 26, one end of described barrel support bar 25 are fixed on the outer wall of abnormal contact plate 4, the other end and cylinder
Body axle 26 connects；Described drum shaft 26 and the centerline axis parallel of shaft coupling are set；Described rolling barrel 24 is rotatable
In drum shaft 26.
The another embodiment of the supporting construction of the present embodiment is：Described supporting construction includes the He of barrel support bar 25
Drum shaft 26, one end of described barrel support bar 25 are fixed on the outer wall of abnormal contact plate 4, and the other end connects with drum shaft 26
Connect；Described drum shaft 26 and the centerline axis parallel of shaft coupling are set；Between described drum shaft 26 and barrel support bar 25
Connection free to rotate, described rolling barrel 24 are fixedly mounted in drum shaft 26.
Further, the abnormal contact plate 4 described in the present embodiment includes being correspondingly arranged at the of the periphery of shaft coupling inner ring 21
One abnormal contact portion 401 and the second abnormal contact portion 402 for being correspondingly arranged at the periphery of couplings outside lane 3；Described barrel support
Bar 25 is fixed on the outer wall in the first abnormal contact portion 401 or the second abnormal contact portion 402.
Specifically, one end of barrel support bar 25 described in the present embodiment is fixed on the outer wall in the first abnormal contact portion 401
Close to the one end in the second abnormal contact portion 402, the other end of barrel support bar 25 is connected to the middle part of drum shaft 26；The rolling
Cylinder 24 includes the first cylinder and the second cylinder being separately mounted in the drum shaft 26 of the both sides of barrel support bar 25.
Further, the external diameter of shaft coupling inner ring 21 described in the present embodiment is less than the external diameter of couplings outside lane 3, and described the
The internal diameter in one abnormal contact portion 401 is less than the internal diameter in the second abnormal contact portion 402；The height of described barrel support bar 25 is more than
The external diameter in the second abnormal contact portion 402；The first described cylinder is arranged on the outer ring in the first abnormal contact portion 401, the second cylinder
It is correspondingly arranged at the outer ring in the second abnormal contact portion 402.
Rolling barrel 24 described in the present embodiment is circumferentially distributed respectively along the outer surface of abnormal contact plate 4 including multiple,
So so that the whole circumferential exterior surface of abnormal contact plate 4 is all scrolled cylinder 1 and enveloped, no matter the volume size of foreign matter
It can be effectively avoided directly to be contacted with shaft coupling body, so as to realize that the anti-foreign matter of shaft coupling of the present invention acts on.
At the same time, supporting construction of the present invention corresponds with rolling barrel 24, and each rolling barrel 24 passes through
One supporting mechanism is rotatably on the outer wall of abnormal contact plate 4.
As a kind of preferred embodiment of the present embodiment, described rolling barrel 24 is the appearance made of elastomeric material
The soft elastic rolling cylinder in face；Or the elastomer of soft surface is set on the outer surface of the rolling barrel 24.
The abnormal contact baffle plate 4 of the shaft coupling of the present embodiment circumferentially installs a circle rolling barrel 24, the rolling barrel additional
24 can freely rotate around drum shaft 26, while remaining directive constraint of institute in addition to circumferentially rotating direction by drum shaft 26.
Drum shaft 26 is connected to the abnormal contact plate 4 of shaft coupling by barrel support bar 25, and connected mode can use screw thread, bolt connection
Etc. mode.The quantity of rolling barrel 24 can be adjusted according to the actual service condition of shaft coupling, and the material of rolling barrel 24 can
To be selected according to the actual conditions at scene.
,, will because shaft coupling is in high-speed rotation state if there is abnormal contact shaft coupling when shaft coupling normal rotation
Radial frictional force inevitably is produced with the article being in contact, in addition there is the protrusions such as bolt, engaging nail in shaft coupling itself,
Easily cause personnel or foreign matter to be involved in shaft coupling, cause casualties and device damage.
The couplings outside lane of the present embodiment installs a rotatable rolling barrel 24 of circle additional, and shaft coupling is with contacting caused by article
Radial frictional force will cause the rotation of rolling barrel 24, and shaft coupling is converted into rolling barrel with contacting the force of sliding friction of article
24 with contacting the force of rolling friction between article, i.e., contact the frictional force between article and shaft coupling (rolling barrel 24) under such a state
Size is equal to the power for maintaining rolling barrel 24 to rotate, the radial frictional force size that will be greatly reduced shaft coupling with contact article.
If the contact force contacted between article and shaft coupling is larger, the ability protected more than external rolling barrel 24, due to
Abnormal contact plate 4 is centripetal by driving abnormal contact plate connection rack to produce after the power by power internally, abnormal contact plate 4
Motion, internal gear rotation is driven, while drive clutch block connection rack to produce centrifugal motion, clutch block departs from shaft coupling
Circle, shaft coupling stop transmitting moment of torsion, and outer ring stops operating in the case where being involved in foreign matter effect.Because engine and working machine can use
Such a shaft coupling, after clutch block disengagement, the rotary inertia of only remaining shaft coupling, to being involved in the injury of personnel or foreign matter and its micro-
It is small, can farthest protection staff and equipment safety.
The gear of the shaft coupling, rack, abnormal contact outer girth sheets, support and constraint, the quantity of clutch block, arrangement,
Type can be changed, adjusted according to being actually needed.
Due to bridging effect of the rolling barrel 24 in shaft coupling periphery, bolt, engaging nail etc. are prominent existing for shaft coupling itself
Go out thing because there is the masking of cylinder outside, it is difficult to hook contact article, protective effect is formed to contact personnel and article.
The above embodiment of the present invention can individually be implemented, and can also be mutually combined implementation.
Described above is only presently preferred embodiments of the present invention, not makees any formal limitation to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people for being familiar with this patent
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompting make it is a little change or be modified to
The equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit pair according to the present invention
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within the present invention program.
Claims (10)
1. foreign matter is involved in automatic disengaging shaft coupling, it is characterised in that including shaft coupling inner ring, clutch block, couplings outside lane, different
Thing contact plate, link gear and free rolling element, described shaft coupling inner ring and transmission axis connection, shaft coupling inner ring periphery is along week
To multiple clutch blocks that can radially move are set, the outside of clutch block is connected with couplings outside lane, and the inner side of clutch block is embraced
Tightly/disengage shaft coupling inner ring；The described circumferentially arranged multiple abnormal contact plates in couplings outside lane periphery, abnormal contact plate pass through
Link gear is connected with clutch block, and abnormal contact plate moves through linkage structure under the pressure effect of foreign matter and drives clutch block
Shaft coupling inner ring is disengaged, cuts off the power transmission of power transmission shaft；The free rolling element it is free to rotate be arranged on abnormal contact
The periphery of plate.
2. foreign matter according to claim 1 is involved in automatic disengaging shaft coupling, it is characterised in that described free rolling element
To be set in the concentric sleeve that can be rotated relative to it on the periphery of abnormal contact plate and freely.
3. foreign matter according to claim 2 is involved in automatic disengaging shaft coupling, it is characterised in that described concentric sleeve with
Rolling mechanism is set between abnormal contact plate so that concentric sleeve can freely rotate relative to abnormal contact plate.
4. foreign matter according to claim 3 is involved in automatic disengaging shaft coupling, it is characterised in that described rolling mechanism is
Bearing, the inner ring interference fit of the abnormal contact plate and rolling bearing, the outer ring of the bearing is interference fitted with concentric sleeve.
5. foreign matter according to claim 3 is involved in automatic disengaging shaft coupling, it is characterised in that described rolling mechanism is
Ball, opens up deep-slotted chip breaker closed at both ends on the periphery wall of the abnormal contact plate, described ball it is spacing in deep-slotted chip breaker and
Free to rotate, ball keeps contacting respectively with abnormal contact plate, concentric sleeve.
6. foreign matter according to claim 1 is involved in automatic disengaging shaft coupling, it is characterised in that described free rolling element
For along the circumferentially distributed multiple rolling barrels in the outer surface of abnormal contact plate, the central axis and shaft coupling of each rolling barrel
Centerline axis parallel set.
7. foreign matter according to claim 6 is involved in automatic disengaging shaft coupling, it is characterised in that also includes being fixed on foreign matter
Supporting construction on the outer wall of contact plate, the installation free to rotate of described rolling barrel is on the support structure.
8. foreign matter according to claim 7 is involved in automatic disengaging shaft coupling, it is characterised in that described supporting construction bag
Include barrel support bar and drum shaft, one end of described barrel support bar is fixed on the outer wall of abnormal contact plate, the other end with
Cylinder axis connection；Described drum shaft and the centerline axis parallel of shaft coupling are set；Described rolling barrel is rotatably installed
In drum shaft.
9. foreign matter according to claim 6 is involved in automatic disengaging shaft coupling, it is characterised in that described supporting construction bag
Include barrel support bar and drum shaft, one end of described barrel support bar is fixed on the outer wall of abnormal contact plate, the other end with
Cylinder axis connection；Described drum shaft and the centerline axis parallel of shaft coupling are set；Described drum shaft and barrel support bar it
Between connection free to rotate, described rolling barrel is fixedly mounted in drum shaft.
10. anti-foreign matter according to claim 1 is involved in shaft coupling, it is characterised in that described free rolling element is by bullet
Property outer surface made of material soft elastic rolling cylinder；Or set surface soft on the outer surface of the free rolling element
Soft elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710422757.3A CN107448491B (en) | 2017-06-07 | 2017-06-07 | Automatic disengaging type coupling for rolling-in foreign matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710422757.3A CN107448491B (en) | 2017-06-07 | 2017-06-07 | Automatic disengaging type coupling for rolling-in foreign matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107448491A true CN107448491A (en) | 2017-12-08 |
| CN107448491B CN107448491B (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710422757.3A Active CN107448491B (en) | 2017-06-07 | 2017-06-07 | Automatic disengaging type coupling for rolling-in foreign matter |
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|---|---|---|---|---|
| CN2208028Y (en) * | 1992-10-19 | 1995-09-20 | 杨益文 | Internal braking winding engine |
| EP0463271B1 (en) * | 1990-06-25 | 1997-01-08 | Beloit Technologies, Inc. | Shear hub |
| JP2004036890A (en) * | 2002-07-12 | 2004-02-05 | Halla Climate Control Corp | Power transmission |
| CN200950238Y (en) * | 2006-09-04 | 2007-09-19 | 盐城市机床有限公司 | Disengaging safety hand wheel |
| CN101929509A (en) * | 2009-06-26 | 2010-12-29 | 江苏省徐州锻压机床厂集团有限公司 | Coupler with over-torsion protection function |
| CN202790190U (en) * | 2012-07-05 | 2013-03-13 | 鞍钢股份有限公司 | Novel single-tooth roller tooth-shaped coupling |
| US20170122384A1 (en) * | 2014-04-17 | 2017-05-04 | Denso Corporation | Power transmission device |
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2017
- 2017-06-07 CN CN201710422757.3A patent/CN107448491B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0463271B1 (en) * | 1990-06-25 | 1997-01-08 | Beloit Technologies, Inc. | Shear hub |
| CN2208028Y (en) * | 1992-10-19 | 1995-09-20 | 杨益文 | Internal braking winding engine |
| JP2004036890A (en) * | 2002-07-12 | 2004-02-05 | Halla Climate Control Corp | Power transmission |
| CN200950238Y (en) * | 2006-09-04 | 2007-09-19 | 盐城市机床有限公司 | Disengaging safety hand wheel |
| CN101929509A (en) * | 2009-06-26 | 2010-12-29 | 江苏省徐州锻压机床厂集团有限公司 | Coupler with over-torsion protection function |
| CN202790190U (en) * | 2012-07-05 | 2013-03-13 | 鞍钢股份有限公司 | Novel single-tooth roller tooth-shaped coupling |
| US20170122384A1 (en) * | 2014-04-17 | 2017-05-04 | Denso Corporation | Power transmission device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107448491B (en) | 2020-08-18 |
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