CN1201505A - Gear type elastic coupling - Google Patents
Gear type elastic coupling Download PDFInfo
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- CN1201505A CN1201505A CN96198054.0A CN96198054A CN1201505A CN 1201505 A CN1201505 A CN 1201505A CN 96198054 A CN96198054 A CN 96198054A CN 1201505 A CN1201505 A CN 1201505A
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- sleeve
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- live axle
- driven shaft
- free space
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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
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/18—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth
- F16D3/185—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth radial teeth connecting concentric inner and outer coupling parts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
A flexible gear coupling between a driving electric motor and a reduction device to transmit a drying force. Movable stoppers spaced from central plates with free spaces therebetween and having an elasticity in the axial direction are planted in drive shafts, and stationary stoppers spaced from the central plates with free spaces therebetween are provided on nuts. Accordingly, even when a maximum allowable displacement is increased, sleeves are not moved excessively, enabling smooth transmission of the driving force. Also, there is little possibility of communication of the inside with the outside of the coupling.
Description
Even the present invention relates to producing and also driving force can be delivered to the gear type elastic coupling that driven shaft gets on from live axle when mobile wherein in live axle and the driven shaft.
Traditional movable gear type elastic coupling has been widely used in being connected such as motor in the drive units such as railway vehicle, automobile, rolling device and speed reducer.
Below be that example illustrates with the movable gear type elastic coupling in the railway vehicle drive unit.For example, be used for the movable gear type elastic coupling that railway vehicle drive unit drive motor is connected with reduction gearing shown in the real public clear 47-14804 communique of Japan Patent.Aftermentioned Fig. 5 and Fig. 6 represent the drawing in side sectional elevation with the internal structure biopsy cavity marker devices of the traditional movable gear type elastic coupling of the conduct of similar shown in the above-mentioned communique.In Fig. 5 and Fig. 6,1,1 ' is fixed stop, 2,2 ' is center plate, 3,3 ' for there being the gear of outer toothed portion 3a, 3a ', 4,4 ' is dust guard, 5,5 ' for having the 5a of portion of internal tooth portion, 5a, the mutual sleeve that connects with flange, 6,6 ' is end shield, 10 is the live axle of not shown motor, 10 ' is the driven shaft with not shown reduction gearing, 11,11 ' is nut, and 12,12 ' is lubricating grease, a, a ' for make gear 3,3 ' with sleeve 5, the 5 ' free space that can move freely relatively.And, as shown in Figure 5, the axial length on the live axle 10 of free space a, a ', the driven shaft 10 ' direction outer toothed portion 3a, 3a ' with the 5a of portion of internal tooth portion, when 5a ' axial centre is consistent, be fixed stop 1,1 ' and middle plate 2,2 ' between distance.And, this distance on live axle 10, driven shaft 10 ', have maximum external force do the time spent, with gear 3,3 ' can relative sleeve 5, the 5 ' distance that relatively moves from position shown in Figure 5, promptly maximumly allow displacement apart from equal.Here, the maximum displacement distance that allows is the distance that the structural configuration design specification by not shown motor and not shown speed reducer is determined.
Below its action of explanation.In state shown in Figure 5, when driving not shown motor, live axle 10 rotations, the 5a of the internal tooth portion engagement of the external tooth 3a of gear 3 and sleeve pipe, sleeve 5 rotations, with the sleeve 5 ' rotation that flange is connected with sleeve 5, the 5 ' a of internal tooth portion of sleeve 5 ' and the external tooth 3a ' of gear 3 ' engagement, driven shaft 10 ' rotation.And, even moving or when tilting, also driving force successfully can be delivered on the driven shaft 10 ' wherein in the live axle in service 10 of not shown railway vehicle and driven shaft 10 ' because of external force produces.This situation live axle 10 and driven shaft 10 ' towards will illustrate shown in Figure 6 beyond direction when moving too.Fig. 6 represents live axle 10 and driven shaft 10 ' because of the example of external force when Fig. 5 state moves, and is live axle 10 and the driven shaft 10 ' d in Fig. 6, d ' direction situation about moving respectively.At this moment, fixed stop 1,1 ' and center plate 2,2 ' contact with end cap 6,6 ' still former state near to or in contact with, dust guard 4,4 '.Therefore, dust just can not enter its inside from the outside of movable toothed coupling, and lubricated finger can be from the internal leakage of movable gear type elastic coupling to its outside yet.
Yet, follow the speed up of recent railway vehicle and the maximization of the motor that comes and requiring further improve maximum that the railway vehicle riding comfort means live axle 10 and driven shaft 10 ' allow the displacement distance also with elongated.The drawing in side sectional elevation that Fig. 7 and Fig. 8 allow displacement apart from the movable gear type elastic coupling internal structure biopsy cavity marker devices of lengthening for expression is maximum.In addition, in Fig. 7 and Fig. 8, except maximum allows displacement all identical with Fig. 5 apart from the structure division elongated, the Therefore, omited is to its explanation.For the maximum of live axle 10 and driven shaft 10 ' being allowed the displacement distance elongated, as shown in Figure 7, that sleeve 5,5 ' the elongated formation of axial length is promptly passable.Just according to than free space a shown in Figure 5, a ' long along live axle 10, driven shaft 10 ' direction length, to constitute free space b, b ' shown in Figure 7 just passable.Even it is same with above-mentioned action, not shown railway vehicle also driving force successfully can be delivered on the driven shaft 10 ' from live axle 10 when moving wherein in live axle 10 and driven shaft 10 ' in service.Yet exist dust to enter its inside and lubricating oil fat possibility from the outside of movable gear type elastic coupling from the internal leakage of movable gear type elastic coupling to the outside.For example, Fig. 8 be exactly live axle 10 and driven shaft 10 ' the position from Fig. 7 state do not change, center plate 2,2 ', sleeve 5,5 ' and end cap 6,6 ' among Fig. 7, be moved to the left occasion from Fig. 7 state.Even not being subjected to big external force at live axle 10 from many moving axis 10 ' does time spent, sleeve 5,5 ' and also can move the maximum displacement distance that allows.Therefore, fixed stop 1 oppositely separates with end cap 6 near to or in contact with center plate 2, dust guard 4 '.Therefore, exist in the problem that forms space e ' between dust guard 4 ' and end cap 6 '.In addition, existing at this moment, sleeve 5,5 ' work excessively move, take place the big vibration or the possibility of resonance.
Now explanation is as the movable gear type elastic coupling of another example of tradition.For explanation is understood easily, still use Fig. 5.For bring into play with Fig. 5 in fixed stop 1, the purpose of 1 ' said function, center plate 2,2 ' and gear 3,3 ' between often insert the spring that gear 3,3 ' is pushed to live axle 10, driven shaft 10 '.Identical among other structures of this example and Fig. 5.In this occasion since center plate 2,2 ' with gear 3,3 ' between dispose spring, need the spring of weight.In addition, because spring is often pushed gear 3,3 ' to live axle 10, driven shaft 10 ', even when event is not subjected to the common operation of external force effect on live axle 10, driven shaft 10 ', center plate 2,2 ' and gear 3,3 ' on the spring force effect is arranged, thereby might product and spring vibration and resonance.Therefore, driving force successfully can not be transmitted to driven shaft 10 ' from live axle 10.
Therefore, the present invention is exactly in order to address the above problem, even purpose is to provide the maximum permission displacement distance of live axle and driven shaft elongated, also can suppress undue the moving of sleeve, the successfully movable gear type elastic coupling of transmission of drive force.
In addition, even the present invention also aims to provide the maximum of live axle and driven shaft to allow the displacement distance elongated, successfully transmission of drive force makes its little movable gear type elastic coupling of possibility inner and its external communications simultaneously.
Movable gear type elastic coupling of the present invention, possesses live axle, be fixed on this live axle, gear with outer toothed portion, sleeve with the portion of internal tooth portion of meshing with aforementioned external teeth portion, link to each other with an end of this sleeve, sleeve with portion of internal tooth portion, have with the gear of the outer toothed portion of portion of above-mentioned internal tooth portion engagement with and on fix the driven shaft of this gear, aforementioned external teeth portion processes through convex surface, on above-mentioned live axle and above-mentioned driven shaft, be subjected to maximum external force and do the time spent, said gear can move the maximum displacement distance that allows with respect to above-mentioned sleeve in free space, driving force is delivered on the above-mentioned driven shaft from above-mentioned live axle, constituting above-mentioned sleeve can relative said gear relatively move at the free space of regulation, possesses the movable limit block that the above-mentioned sleeve of constraint moves simultaneously, on above-mentioned live axle and above-mentioned driven shaft, be subjected to the masterpiece time spent littler than above-mentioned maximum external force, make said gear move the more above-mentioned maximum distance that allows displacement apart from weak point with respect to above-mentioned sleeve, therefore, distance is elongated even the maximum of live axle and driven shaft allows displacement, and it is too mobile also can to suppress sleeve, transmission of drive force successfully.
In addition, continue to contact with the dust guard of being located at said gear owing to constitute the end cap of sleeve, make its inside and its outside to be communicated with possibility little.
In addition, since from the center plate that is fixed in sleeve separate regulation free space, with movable limit block be embedded end at live axle, so the movable gear type elastic coupling with above-mentioned movable limit block is formed maximize and preponderance.
In addition, spring and one end on the live axle contacts with above-mentioned spring, the other end constitutes with the aspectant buffer body of center plate because movable limit block is by being maintained at, thus simple in structure and manufacturing, assemble easy.
In addition, because the fixed stop that separates required free space from center plate is set on the nut that gear is fixed on live axle, above-mentioned live axle and be subjected to maximum external force effect, this live axle moved maximum permission displacement apart from the time, because the said fixing block suppresses moving of this live axle, so even the restraining force of movable limit block little also can, driving dog forms easily.
In addition, because the movable limit block live axle that is equivalent to deduct the regulation free space at least with shortening from maximum permission displacement distance, the elastomer of the distance behind the axial distance of driven shaft forms, and can constitute the movable limit block of simple structure.
In addition, because constituting above-mentioned sleeve can relatively move in the free space of regulation relative to said gear, in drive shaft side and driven shaft side the movable limit block that the above-mentioned sleeve of constraint moves is set simultaneously, in above-mentioned live axle and above-mentioned driven shaft wherein one on be subjected to the little masterpiece time spent of more above-mentioned maximum external force, said gear moves the more above-mentioned maximum distance that allows displacement apart from weak point with respect to above-mentioned sleeve, so even the maximum of live axle and driven shaft allows the displacement distance elongated, also can suppress undue the moving of sleeve, successfully transmission of drive force.
Simple declaration to accompanying drawing:
Fig. 1 is the sectional side view of the movable gear type elastic coupling of the embodiment of the invention 1,
The sectional side view of the movable gear type elastic coupling when Fig. 2 moves for the sleeve of Fig. 1,
The sectional side view of the movable gear type elastic coupling when Fig. 3 moves for the live axle of Fig. 1 and driven shaft,
Fig. 4 is the sectional side view of the movable gear type elastic coupling of the embodiment of the invention 2,
Fig. 5 is traditional movable gear type elastic coupling sectional side view,
The sectional side view of the movable gear type elastic coupling when Fig. 6 moves for the live axle of Fig. 5 and driven shaft,
Fig. 7 is the elongated maximum sectional side view that allows the movable gear type elastic coupling of displacement distance that forms,
The sectional side view of the movable gear type elastic coupling when Fig. 8 moves for the sleeve of Fig. 7,
For implementing embodiments of the invention
For more sets forth in detail the present invention, existing is that example describes with the movable gear type elastic coupling in the railway vehicle drive unit with reference to the accompanying drawings.
Fig. 1-3 is the biopsy cavity marker devices sectional side view of the movable gear type elastic coupling internal structure of the expression embodiment of the invention 1, Fig. 1 is the figure of the axial centre of axial centre and the 5a of internal tooth portion, 5a ' of external tooth 3a, 3a ' when consistent, Fig. 2 is the figure of sleeve 5,5 ' when Fig. 1 state is moved to the left, Fig. 3 for live axle 10 and driven shaft 10 ' because of the figure of external force effect when direction near each other moves.In addition, free space b, b ' are identical with the situation of Fig. 7 with the maximum displacement distance that allows.
In Fig. 1-3,1,1 ' for being fixed in nut 11,11 ' fixed stop, 2,2 ' for being fixed in sleeve 5,5 ' center plate, and 3,3 ' is the dust guard that is fixedly set on the gear 3,3 ' for having gear, 4,4 ' and 41,41 ' through external tooth 3a, the 3a ' of convex surface processing.Dust guard 41,41 ' is positioned at than dust guard 4,4 ' the more close central side.Simultaneously, dust guard 41,41 ' and nonessential mainly is in order to compare with Fig. 7, and dirt device in the air 41,41 ' situation are explained.5,5 ' for having internal tooth portion 5a, the 5a also wideer than the facewidth of external tooth 3a, 3a ', connect the sleeve of (for example use bolt affixed) with flange each other, 6,6 ' for for example with the steel manufacturing, be fixedly set in the end cap on the sleeve 5,5 '.Contact with end cap 6,6 ' by dust guard 4,4 ', prevent the leakage that dust enters and prevents lubricating oil fat from the outside of movable gear type elastic coupling.8,8 ' is the movable limit block that is reached spring 8B, the 8B ' formation of for example using the spring steel by buffer body 8A, the 8A ' of high abrasion resistance, lean against on live axle 10, the driven shaft 10 ' at an end that is configured to separate from center plate 2,2 ' free space c, c ' spring 8B, 8B ' under Fig. 1 state, the other end contacts with buffer body 8A, 8A '.Figure 10 is not shown motor drive shaft, and be processed into its end has tapering and movable limit block 8 is embedded in wherein.10 ' driven shaft for being connected with not shown speed reducer, its end are processed into to have tapering and movable limit block 8 ' is embedded in wherein.11,11 ' is the nut that gear 3,3 ' is fixed on live axle 10, the driven shaft 10 '.12,12 ' lubricating oil fat for lubricated usefulness, because of its viscosity height, so even when movable gear type elastic coupling stops the rotation, also can be present in sleeve 5, interior all sides of 5 ' as Figure 1-3, be present on the engaging position of external tooth 3a, 3a ' and the tooth of the 5a of internal tooth portion, 5a '.
Here, fixed stop 1,1 ', dust guard 4,4 ' and buffer body 8A, 8A ' adopt teflon (E.I.Du Pont Company's system TM trade mark is a polytetrafluoroethylene), nitrile butadiene rubber, nylon, contain the spring material of fluorine rubber etc., consider even can be used for cold zone, preferably adopt teflon.Buffer body 8A, 8A ' also can use metallic material in addition.At this moment, the most handy material also soft than center plate 2,2 ' for example used copper.Center plate 2,2 ' then adopts the high rigid material of iron plate, reinforced plastic, glass fibre etc.Gear 3,3 ', sleeve 5,5 ' and live axle 10, driven shaft 10 ' adopt the high materials of mechanical strength such as Cr-Mo steel, nickel chromium triangle-Cr-Mo steel, carbon steel.In addition, as shown in Figure 1, because external tooth 3a, 3a ' are carried out convex surface processing, are the processing that the thickness of tooth reduces gradually from the both sides of the mediad tooth of tooth, suitably expands along teeth directional, so gear 3,3 ' can move along its axis or tilts with respect to sleeve 5,5 '.
B, b ' are for moving freely the free space in required space as gear 3,3 ' relatively with sleeve 5,5 '.But as below will illustrating, movable limit block 8,8 ' is tied under certain conditions.Free space b, b ' along the axial length of live axle 10, driven shaft 10 ' as shown in Figure 1, be exactly fixed stop 1,1 ' and center plate 2,2 ' distance when the axial centre of external tooth 3a, 3a ' and the 5a of internal tooth portion, 5a ' is consistent.And this distance, on live axle 10, driven shaft 10 ', be subjected to maximum external force do relative sleeve of time spent, gear 3,3 ' 5,5 ' from the relatively-movable distance in the position of Fig. 1, it equals the maximum displacement distance that allows.Here, the maximum displacement distance that allows is exactly the distance that the structural configuration design specification by not shown motor and not shown speed reducer determines.Much less, gear 3,3 ' with respect to sleeve 5,5 ' moved maximum permission displacement apart from the time, the maximum external force effect is arranged on live axle 10, driven shaft 10 '.And, only breaking down or during abnormal conditions, having masterpiece to be used for live axle 10, driven shaft 10 ' above maximum external force.Situation when in addition, maximum allowable range also will tilt live axle 10, driven shaft 10 ' is taken into account.For example, the maximum of the gear type elastic coupling in the railway vehicle drive unit allows the displacement distance, be benchmark at state with Fig. 1, be axial ± number+10mm along live axle 10, driven shaft 10 ', this value is decided by the specification layout of not shown motor, not shown wheel etc.C, c ' are for moving freely the free space of requisite space as gear 3,3 ' relatively with sleeve 5,5.And, free space c, c ' be movable baffle plate 8,8 ' and center plate 2,2 ' distance when external tooth 3a, 3a ' internal tooth portion 5,5a ' axial centre are consistent along live axle 10, driven shaft 10 ' axial length.And, it be at least when relatively moving in movable limit block 8,8 ' the distance c, the c ' in regulation, to make dust guard 4,4 ' and end cap 6,6 ' can continue contact distance.For example, in the state of Fig. 1, this distance promptly be movable limit block 8,8 ' buffer body 8a, 8a ' with center plate 2,2 ' between distance, maximum allow displacement apart from can for fixed stop 1,1 ' and center plate 2,2 ' between the 1/4-3/4 of distance.In addition, much less also same with free space b, b ' for free space c, c ', also must consider the situation that live axle 10 and driven shaft 10 ' tilt.
In addition, the spring constant of spring 8B, 8B ' should be movable limit block 8,8 ' moved maximum permission displacement apart from the time, buffer body 8A, 8A ' can be contained in the spring constant in live axle 10, driven shaft 10 ' and the nut 11,11 ' fully.And the pressure of spring 8B, 8B ' (counter-force) is elected sleeve 5,5 ' and more than 5% of gross weight of floating part fixed thereon (center plate 2,2 ' and end cap 6,6 ') usually as, preferably selects 10-100% for use.The size of this range of choice is different by the specification of railway vehicle is many because of its motion speed, straight section or curved portion is many circuit and requirement.
Below its action of explanation.In following explanation, illustrate that live axle 10, driven shaft 10 ' and sleeve 5,5 ' situation about moving vertically respectively come, yet also must consider live axle 10, the situation during driven shaft 10 ' inclination action.At state shown in Figure 1, when driving not shown motor, live axle 10 rotations, the 5a of the internal tooth portion engagement of the external tooth 3a of gear 3 and sleeve 5, sleeve 5 rotations, sleeve 5 ' the rotation that links to each other with sleeve 5 flanges, the 5a ' of internal tooth portion of sleeve 5 ' is meshed with the external tooth 3a ' of gear 3 ', driven shaft 10 ' rotation.And, in service at not shown railway vehicle, even moving or when tilting, also driving force successfully can be delivered on the driven shaft 10 ' from live axle 10 wherein in live axle 10 and the driven shaft 10 ' because of external force produces.Yet, existing again on Fig. 1 state, live axle 10 and driven shaft 10 ', not being subjected to external force to do the time spent and explain from Fig. 1 state, live axle 10 and the driven shaft 10 ' example when being subjected to the external force effect mobile.
When Fig. 2 is illustrated in usual operation, at the invariant position state of live axle 10 shown in Figure 1 and driven shaft 10 ', center plate 2,2 ', sleeve 5,5 ' and end cap 6, an example the when 6 ' state from Fig. 1 is moved to the left among Fig. 1.At this moment, movable limit block 8 contacts with center plate 2, the mobile constraint that is subjected to spring 8B of center plate 2.At this moment, dust guard 4,4 ' contacts with end cap 6,6 '.Therefore, when the usual operation of live axle 10 and driven shaft 10 ' last nothing pressure external force effect, do not produce space e as shown in Figure 8.In addition, owing to be provided with movable limit block 8,8 ', can suppress sleeve 5,5 ' excessive moving.
In addition, to being set, dust guard 41,41 ', live axle 10 and the driven shaft 10 ' situation when Fig. 2 state moves along the direction that is separated mutually explains.At this moment, temporarily do not contact, can make end cap 6,6 ' to continue to contact with dust guard 41,41 ' even become end cap 6,6 ' with dust guard 4,4 ', it is very little perhaps to become the gap that does not contact and produce.And, owing to produce excessively mobilely with movable limit block 8,8 ' restriction sleeve 5,5 ', do not make dustproof 41,41 ' to enter into end cap 6,6 ' inboard yet.In other words, as shown in Figure 7, also consider on movable gear type elastic coupling, to install dust guard 41,41 ', but because that sleeve 5,5 ' displacement distance are big, dust guard 41,41 ' enters the inboard possibility of end cap 6,6 ' is big.And, for fear of this thing happens, can with end cap 6,6 ' and dust guard 41,41 ' contact range enlarge, become big problem but end cap 6,6 ' will take place.
Fig. 3 is subjected to the external force effect, makes live axle 10 and driven shaft a 10 ' example when direction near each other moves from Fig. 1 state, live axle 10 and driven shaft 10 ' for expression.At this moment, spring 8B, 8B ' because of act on live axle 10 and the driven shaft 10 ' external force by compression, fixed stop 1,1 ' and center plate 2,2 ' near to or in contact with.At this moment, dust guard 4,4 ' contacts with end cap 6,6 '.In addition, live axle 10 and driven shaft 10 ' because of the maximum external force effect moved each other maximum permission displacement apart from the time, spring 8B, 8B ' are by compression, fixed stop 1,1 ' contacts with center plate 2,2 ', produces and surpasses maximum the moving of displacement distance that allow and suppress live axle 10 and driven shaft 10 '.Therefore, can not make dust enter its inside from the outside of movable gear type elastic coupling and do not make lubricating oil fat from the inside of movable gear type elastic coupling to external leaks.In addition, being subjected to external force effect, live axle 10, driven shaft 10 ' at live axle 10 and driven shaft 10 ' produces when surpassing free space c, c ' mobile, because spring 8B, 8B ' are by compression, live axle 10 and driven shaft 10 ' can not be subjected to the effect from movable limit block 8,8 ' too big power.In addition,, be subjected to external force to do the time spent,, can suppressing sleeve 5,5 ' and produce undue moving spring 8B, 8B ' compression owing to be provided with movable limit block 8,8 '.
Because movable gear type elastic coupling has aforesaid structure, even thereby the maximum that live axle 10 and driven shaft 10 ' are provided allows the displacement distance elongated, also can suppress sleeve 5,5 ' and produce undue moving, the successfully gear type elastic coupling of transmission of drive force.In addition since movable limit block 8,8 ' with center plate 2,2 ' between have free space c, c ', make to produce having a remote possibility of resonating, successfully transmission of drive force.This be because free space c, c ' make movable limit block 8,8 ' spring 8B, 8B ' become unsteady, go up no external force at live axle 10 and driven shaft 10 ' and do the time spent, spring 8B, 8B ' resonate hardly.In addition and since with spring 8B, 8B ' be embedded in the live axle 10, driven shaft 10 ', in light weight, even spring 8B, 8B ' temporarily resonate.It is also very little to the influence of movable gear type elastic coupling.
In addition, provide the maximum of live axle 10 and driven shaft 10 ' to allow elongated, the transmission of drive force successfully, and its little movable gear type elastic coupling of possibility inner and its external communications of displacement distance.
In addition, as the spring constant of selecting spring 8B, 8B ' by following mode, can not establish fixed stop 1,1 ', exactly when maximum external force acts on live axle 10, the driven shaft 10 ', the end face of buffer body 8A, 8A ' and nut 11,11 ' end face become same plane, simultaneously, can select to make the spring length of this moment at this moment is that the shortest length (full compression) of spring 8B, 8B ' gets final product.
In addition, the situation that movable limit block 8,8 ' is embedded on live axle 10 and the driven shaft 10 ' is described.Yet because as long as movable limit block 8,8 ' can suppress sleeve 5,5 ' move just passablely, for example need only movable limit block 8,8 ' be fixed on the center plate 2,2 ', on live axle 10 and driven shaft 10 ', offer movable limit block 8,8 ' patchhole is just passable.
In addition, to the end at live axle 10 and driven shaft 10 ' movable limit block 8 is set, 8 ' situation is described.Yet, because as long as movable limit block 8,8 ' can retrain sleeve 5,5 ' move just passablely, so also movable limit block 8,8 ' can be arranged at the parallel portion of live axle 10 and driven shaft 10 ', get final product on the outside of moving gear formula elastic coupling flexible coupling.At this moment, for example ring can be fixed on the parallel portion of live axle 10 and driven shaft 10 ', suppress moving of this baffle ring.
In addition, to the both sides at live axle 10 and driven shaft 10 ' movable limit block 8 all is set, 8 ' situation is described, even but only be provided with on one and also can.
In addition, the example that adopts helical spring to make spring 8B, 8B ' is described, but also can be used as spring 8B, 8B ' with rubber spring, pneumatic spring etc.
Fig. 4 is the biopsy cavity marker devices sectional side view of the movable gear type elastic coupling internal structure of the expression embodiment of the invention 2.Among Fig. 4,8,8 ' for the movable limit block that mainly constitutes, constitute by elastomer 8C, 8C ' and contact 8D, 8D ' by spring body.Elastomer 8C, 8C ' constitute by for example being compressed the sponge material along live axle 10 and the such distance of driven shaft 10 ' axial length that allows the displacement distance to deduct free space C, C ' from maximum at least. Contact 8D, 8D ' constitute, are fixed in elastomer portions 8C, 8C ' with rubber-like material hardly and go up and can contact with center plate 2,2 ' formation face.All the other structures and the action effect thereof of this example are identical with embodiment 1, and the Therefore, omited illustrates it.In addition, in embodiment 2 structure because movable limit block 8,8 ' simple in structure.Can make the assembling of movable gear type elastic coupling easy.
The possibility of using on the industry
As mentioned above, the movable gear type elastic coupling of the present invention is as connecting drive motors and deceleration device, biography Pass the power of driving force transmission mechanism, be applicable to the drive unit such as rolling stock, automobile, rolling device etc.
Claims (7)
1. movable gear type elastic coupling, possesses live axle (10), be fixed on this live axle (10), has gear (3) through the outer toothed portion (3a) of convex surface processing, sleeve (5) with the internal tooth portion (5a) of meshing with outer toothed portion (3a), link to each other with an end of this sleeve, sleeve (5 ') with internal tooth portion (5a '), has engagement with internal tooth portion (5a '), through the gear (3 ') of the outer toothed portion of convex surface processing (3a ') and the driven shaft (10 ') on fixing and this gear (3 '), in live axle (10), there is maximum external force to do the time spent on the driven shaft (10 '), gear (3), (3 ') can be at free space (b), (b ') interior sleeve (5) relatively, (5 ') moves the maximum displacement distance that allows, driving force is delivered on the driven shaft (10 ') from above-mentioned live axle (10), it is characterized in that constituting in sleeve (5) (or sleeve (5 ')) and the gear (3) (or gear (3 ') can in free space (c) (or free space (c ')) and relatively move, simultaneously, also has the movable limit block (8) (or movable limit block (8 ')) that moves in order to constraint sleeve (5) (or sleeve (5 ')), for (or arranged the masterpiece time spent littler than above-mentioned maximum external force on the driven shaft (10 '), gear (3) (or gear (3 ')) is maximumly to allow displacement mobile with respect to sleeve (5) (or sleeve (5 ')) apart from short distance than above-mentioned at live axle (10).
2. coupling according to claim 1, it is characterized in that, at sleeve (5) (or sleeve (5 ')) in free space (c) (or free space (c ')) in relative to gear (3) (or gear (3 ')) when moving, be located at sleeve) end cap (6) (or end cap (6 ')) of (5) (or sleeve (5 ')) continues to contact with the dust guard (4) (or dust guard (4 ')) of being located at gear (3) (or gear (3 ')).
3. coupling according to claim 1 is characterized in that separating free space (c) (or free space (c '), movable limit block (8) (or movable limit block (8 ')) being embedded on the end of live axle (10) (or driven shaft (10 ')) from the center plate (2) (or center plate (2 ')) of fixed muffle (5) (or sleeve (5 ')).
4. coupling according to claim 3 is characterized in that movable limit block (8) (or movable limit block (8 ')) has the spring 8B that remains on the live axle (10) (or driven shaft (10 ')) (or spring (8B ')) and one end and spring (8B) (or spring (8B ')) contact, its other end and center plate (2) (or center plate (2 ')) aspectant buffer body (8A) (or buffer body (8A ')).
5. coupling according to claim 3 is characterized in that (or the nut on the driven shaft (10 ') (11) (or nut (11 ')) is gone up the fixed stop (1) (or fixed stop (1 ')) that is provided with, separates free space (6) (or free space (6 ')) from center plate (2) (or center plate (2 ')) gear (3) (or small gear (3 ')) being fixed on live axle (10).
6. coupling according to claim 3 is characterized in that movable limit block (8) (or movable limit block (8 ')) constitutes with being compressed the elastomer that allows to deduct the displacement distance distance behind the axial length of live axle (10) (or driven shaft (10 ')) of free space (c) (or free space (c ') from maximum at least.
7. movable gear type elastic coupling, possesses live axle (10), be fixed on the live axle (10), has gear (3) through the outer toothed portion (3a) of convex surface processing, sleeve (5) with the internal tooth portion (5a) of meshing with outer toothed portion (3a), link to each other with an end of this sleeve (5), sleeve (5 ') with internal tooth portion (5a '), has engagement with internal tooth portion (5a '), driven shaft (10 ') through the gear (3 ') of the outer toothed portion of convex surface processing (3a '), in live axle (10), there is maximum external force to do the time spent on the driven shaft (10 '), gear (3), (3 ') can be at free space (b), sleeve (5) relatively in (b '), (5 ') moves the maximum distance that allows displacement, driving force is delivered on the driven shaft (10 ') from live axle (10), it is characterized in that constituting sleeve (5) and gear (3) can be in free space (c) relative moving freely, have simultaneously for the little masterpiece time spent of more above-mentioned maximum external force is arranged on above-mentioned live axle (10), said gear (3) relative to above-mentioned sleeve (5) maximum to allow displacement to move apart from short distance than above-mentioned, retrain the movable limit block (8) that above-mentioned sleeve (5) moves, and constitute sleeve (5 ') and gear (3 ') can be to moving freely in free space (c '), have simultaneously for the little masterpiece time spent of more above-mentioned maximum external force is arranged on above-mentioned driven shaft (10 '), make above-mentioned small gear (3 ') with respect to the mobile more above-mentioned maximum distance that allows displacement apart from weak point of above-mentioned sleeve (5 '), the movable limit block (8 ') that constraint sleeve (5 ') moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96198054.0A CN1201505A (en) | 1996-08-30 | 1996-08-30 | Gear type elastic coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96198054.0A CN1201505A (en) | 1996-08-30 | 1996-08-30 | Gear type elastic coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1201505A true CN1201505A (en) | 1998-12-09 |
Family
ID=5129168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96198054.0A Pending CN1201505A (en) | 1996-08-30 | 1996-08-30 | Gear type elastic coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1201505A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101084385B (en) * | 2004-12-28 | 2010-05-12 | 三菱重工业株式会社 | Coupling and gear transmission device having the same |
| CN101065591B (en) * | 2005-02-17 | 2010-08-04 | 三菱电机株式会社 | Gear coupling |
| CN109624324A (en) * | 2019-01-29 | 2019-04-16 | 赵霖 | A kind of 3D printing consumptive material waste material extruder |
-
1996
- 1996-08-30 CN CN96198054.0A patent/CN1201505A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101084385B (en) * | 2004-12-28 | 2010-05-12 | 三菱重工业株式会社 | Coupling and gear transmission device having the same |
| CN101065591B (en) * | 2005-02-17 | 2010-08-04 | 三菱电机株式会社 | Gear coupling |
| US7771281B2 (en) | 2005-02-17 | 2010-08-10 | Mitsubishi Electric Corporation | Gear coupling |
| CN109624324A (en) * | 2019-01-29 | 2019-04-16 | 赵霖 | A kind of 3D printing consumptive material waste material extruder |
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