CN203967901U - A kind of motor tractor - Google Patents

Abstract

The utility model relates to a kind of motor tractor, it is two that this motor tractor is arranged on the gyroaxis that magnetic-inductive device power outlet side makes progress, the first gyroaxis is provided with reduction gearing, the 3rd gyroaxis is provided with sector gear, reduction gearing respectively with magnetic induction ring set on gear of output end and sector gear engagement, the number of reduction gearing is one, a reduction gearing connects magnetic-inductive device on one side, another side connects the sector gear as clutch executive item, reduction gearing was rotated by magnetic-inductive device power output both can, also can be subject to sector gear spring reset direction rotation, more traditional magnetic induction clutch has lacked a reduction gearing and an one rotating shaft, thereby the number of space and part is achieved miniaturization, cost is minimized, the movement response time of whole mechanism shortens to some extent, sensitivity is improved, although there is the following problem causing because reducing by a reduction gearing: finally put on as the magnetic induction moment on the sector gear of clutch executive item not enough.

Description

A kind of motor tractor

Technical field

The utility model relates to a kind of motor tractor (claiming again geared dynamo) that For Drain Valve of Washing Machine and speed changer bar is driven to operation.

Background technology

The structure of traditional motor tractor is, driving by affiliated motor rotor drives the load member connecting with outside (as steel wire through reducing gear train, rack bar; rocking arm etc.); the member that makes to load completes drawing-in motion to assigned position and keeps, and can make this load member turn back to origin-location from holding position.Side at rotor is provided with gyroaxis, driving clutch device is set on this gyroaxis, driving clutch device is being bonding state when electrical power is initial, make rotor forces be passed to load member, when the member that makes to load moves to assigned position, driving clutch device disconnects, and the braking element engaging member that makes to load keeps.But the gyroaxis of driving clutch device is arranged at the side of rotor, thus need certain installing space, and also braking element number is many, complex structure, is unfavorable for the miniaturization of integrated member volume and number of parts, and unfavorable to cost control.Conventional motors rotor is due to simple in structure, and rotor, except the basic function as permanent magnet, is only integrated with the functional configuration of no more than two thereon, is respectively ratchet and gear.Ratchet can have been conflicted and prevent the effect of rotor reversion with anti-reverse member; Gear is except driving subordinate's gear train of a side and driving clutch component to rotate volume on the member that makes to load (" upper volume " is also interpreted as " traction "), also drive the combination gear of opposite side to rotarily drive magnetic-inductive device rotation, due to subordinate's gear train of a side with drive clutch component must be arranged on the side of rotor gyroaxis, be positioned at rotor gyroaxis axially on space be not utilized, this is unfavorable for the miniaturization of space and number of parts.Therefore there is improved necessity in the rotor structure using at present.

And can under the effect as power source motor rotor, complete drawing-in motion for the member that makes to load, then keep, return, except the driving clutch device described in needs, also need to clutch be set at the opposite side of rotor, i.e. magnetic induction clutch.Subtend one side of described magnetic induction clutch is rotor, thereby subtend the opposing party is as speedup train make the to load member of member cushioning effect while returning.The now widely used clutch that has the magnetic induction way of No. 3-198638 announcement of similar patent of invention.This clutch is not form gear that output drives, be magnetic-inductive device and form with 2 reduction gearing of magnetic-inductive device interlock and 1 sector gear of carrying out as clutch and the spring acting on sector gear according to this by 1 that starts from rotor, the another 4 one rotating shafts formations that this magnetic induction clutch need to be except rotor gyroaxis.The shortcoming of magnetic induction clutch is that gear number is many, the gyroaxis of fixed gear is many, take up room large, complexity and cost are higher, in addition because the number of travelling gear is many, so be no matter when electrical power described in sector gear overcome spring force and move with the action of magnetic-inductive device, or described in when motor power-off, magnetic-inductive device moves with the sector gear of the reset drive because of spring, thereby all needs reaction time of growing unfavorable to the sensitivity of mechanism.So this magnetic induction clutch has improved necessity.

For guaranteeing the trouble free service of motor tractor, in it, must be provided for preventing the device of rotor reversion, prevent that the device of rotor reversion is arranged on the rotor side of enclosure, its structure generally has rotor, anti-reverse with ratchet, anti-reverse with member, and anti-reverse combination gear and the gyroaxis of being close to setting with component coaxial with rotor one; At the anti-reverse viscosity lubricating grease of smearing with member and combination gear junction surface.It is anti-reverse that with member, to utilize contact-making surface frictional force and lubricating grease viscous force to realize with combination gear servo-actuated, when rotor rotates towards correct direction, anti-reversely with member is servo-actuated, to leaving, be arranged on rotor and anti-reverse anti-reverse by detent positions with the configuration of member subtend, rotor can normally rotate; When rotor is when with correct direction counter-rotation, anti-reverse servo-actuated to the described detent positions of conflicting with member, rotor must not be reversed; Combination gear, anti-reverse with member with gyroaxis, and be arranged on that ratchet on the described rotor on other axle is common forms the anti-reverse device of using.

Traditional anti-reversely with device, mainly by a gear and an anti-reverse component coaxial, be close to assembling and form, utilize the frictional force of the two to carry out work with the viscous force of smearing viscosity lubricating grease therebetween, but this structure was not considered the situation that the centrifugal force of gear rotation generation gets rid of viscosity lubricating grease gradually, after viscosity lubricating grease is got rid of, lubricated deterioration and viscous force disappearance, unfavorable to the life-span of mechanism.So there is improved necessity with device in the anti-reverse of use at present.

Utility model content

Technical problem to be solved in the utility model is for above-mentioned prior art present situation, to provide that a kind of number of parts is less, the motor tractor less, structural design is more reasonable and function is integrated takes up room

The utility model solves the problems of the technologies described above adopted technical scheme: a kind of motor tractor, comprise the rotor portions being arranged on armature spindle, and can carry out with rotor portions the clutch gear of clutch, on the side face of clutch gear, there is all the time the side face tooth with the driven wheel portion engagement of planetary gears, driven wheel portion meshes by big retarding gear and output wheel transmission, and output wheel with load member is in transmission connection; It is characterized in that: the top of described rotor portions has anti-reverse by ratchet portion and structure gear part, and a side of armature spindle is provided with the first gyroaxis, the 3rd gyroaxis and magnetic induction axle; On the first gyroaxis, be coaxially arranged with combination gear, anti-reverse by member and reduction gearing, described combination gear and structure gear part transmission engagement, and the viscosity lubricating grease of smearing at place, the anti-reverse junction surface with member and combination gear, described anti-reverse with having on member in order to described anti-reverse by the competing braking parts of ratchet; On magnetic induction axle, be coaxially provided with input gear and magnetic induction ring, input gear is provided with permanent magnet, and magnetic induction ring set is located at outside the permanent magnet of input gear, and described combination gear meshes with structure gear part and input gear transmission respectively; The 3rd gyroaxis is provided with sector gear, described reduction gearing respectively with magnetic induction ring on gear of output end and sector gear engagement, the sidewall of sector gear has pothook; One side of described sector gear be provided with in order to sector gear on the pothook card clutch cam of joining, the opposite side of sector gear is provided with the first spring that the pothook that makes on sector gear and clutch cam keep disengaged condition; Described clutch cam meshes by the release gear of speedup wheels and planetary gears.

Above-mentioned clutch gear and rotor portions are coaxially arranged on described armature spindle and can move up and down, the upper surface of rotor portions is provided with the first latch, the lower surface of clutch gear is provided with the second latch matching with the first latch, the upper surface of clutch gear is provided with braking latch, between described clutch gear and rotor portions, be supported with and make both keep the second spring of separation trend, the top of clutch gear is provided with the clutch operating lever of energy deflection, the lower surface of clutch operating lever has high plane and the low plane that can contact with the upper surface of clutch gear, between high plane and low plane, by chamfered transition, connect, the top of clutch gear is also provided with the brake bar of joining with described braking latch card, under the state contacting with high plane in the upper surface of clutch gear, the elastic force that clutch gear overcomes the second spring moves down so that the first latch and the engagement of the second latch, simultaneously, brake bar is separated with braking latch, under the state contacting with low plane in the lower surface of clutch gear, clutch gear moves under the elastic force effect of the second spring so that the first latch and the second latch depart from, simultaneously, brake bar snaps in braking latch.

Rotor portions and clutch gear coaxially arrange, and by moving up and down of clutch gear, realize the clutch with rotor portions, make full use of the upper space of rotor.

Above-mentioned rotor portions comprises permanent magnet and combination member, and described permanent magnet is combined in the periphery of combination member, described anti-reverse with ratchet portion and structure gear part be arranged on combination member.Combination member can adopt plastic material to make, and conveniently molds anti-reverse ratchet portion and the structure gear part used, and suitable installation position is provided to again the core component permanent magnet of rotor simultaneously.

Above-mentioned clutch operating lever is fan-shaped, and one end of clutch operating lever is rotated and is arranged on the second gyroaxis, has arcuate socket on clutch operating lever, and described armature spindle is through this arcuate socket.

Above-mentioned clutch operating lever drives deflection by described output wheel, on the end face of output wheel, there is the pushing block raising up, and the deep-slotted chip breaker of indent, described pushing block can promote to coordinate with the side of clutch operating lever, and the lower surface of described clutch operating lever has the promotion post inserting in deep-slotted chip breaker.Output wheel and draw bar are in transmission connection, the forward bias change of team of output wheel makes pushing block promote the side of clutch operating lever, drive clutch operating lever deflection, the positive deflection of output wheel makes clutch operating lever be contacted with clutch gear upper surface by high face to be deflected to bottom surface to contact with clutch gear upper surface; The reverse deflection of output wheel promotes to belong to clutch operating lever by its deep-slotted chip breaker side and inserts the promotion post in deep-slotted chip breaker, drive clutch operating lever to the opposing party's deflection, the reverse deflection of output wheel makes clutch operating lever be contacted with clutch gear upper surface by bottom surface to be deflected to high face to contact with clutch gear upper surface.

Second technical problem to be solved in the utility model is to provide the anti-reverse device of using that a kind of viscosity lubricating grease is difficult for the motor tractor of loss, and this is anti-reverse more reasonable with apparatus structure design, and can effectively extend its useful life.

Concrete scheme is: above-mentioned combination gear with anti-reverse with member over against end face on be provided with inner fovea part, the centre of gyration of inner fovea part and combination gear coaxially arranges, the described anti-reverse part with member stretches into the junction surface of inner fovea part formation and combination gear downwards, and described viscosity lubricating grease is applied in described inner fovea part.

Because being applied in, viscosity lubricating grease in the inner fovea part of combination gear, can prevent that combination gear viscosity lubricating grease in it in rotary course from overflowing, effectively prevent that the loss that viscosity is lubricated after long-time use from extending the lubricated and friction life-span, anti-reversely with member, be partly embedded in inner fovea part, the set-up mode of embedded shape can also effectively utilize the space that utilizes on axial direction.

Improve further, the bottom surface of above-mentioned inner fovea part be provided with evagination and with the annular wall of the coaxial setting of the centre of gyration of combination gear, it is inside and outside two parts by female parts that this annular wall is positioned at inner fovea part, the described anti-reverse cannelure embedding for annular wall that is provided with member corresponding end-faces, the anti-reverse sidewall with member has curved elasticity support arm, and the outer end of elasticity support arm has the friction part inconsistent with described annular wall outer peripheral face.Friction part draws to guarantee to have balanced soft contact force life-saving between friction part and annular wall by flexible leg, this soft contact force plays the effect of auxiliary contact combination gear, even if having at viscosity lubricating grease under the state of certain disappearance, the reverse rotation of combination gear also can drive anti-reverse with member, guarantee anti-reversely by the braking parts on member, can under rotor inverted status, mutually conflict with ratchet with anti-reverse, realize the braking to rotor.

Improve further, above-mentioned elasticity support arm has that the centre of gyration with combination gear be arranged in parallel and to the limited post of downward-extension.After assembling, limited post can be conflicted with the stationary plane of motor tractor inside, prevents that friction part on elasticity support arm from popping up and separated with annular wall, also just guarantees the stability that the friction part on elasticity support arm contacts with annular wall.

Above-mentionedly anti-reversely with member, be provided with perforation.Anti-reverse must be lighter and handier by member its weight, the weight that perforation can effectively reduce anti-reverse member is set so that the reverse rotation of combination gear can more easily drive and anti-reversely reverse with member thereupon, reduce the energy loss of motor tractor.

Above-mentionedly anti-reversely with contiguous braking parts position on member, be provided with limited location fork.Limited location fork can be conflicted and coordinate with the gear post in motor tractor, make in motor forward process, the anti-reverse member of using is with combination gear forward, after limited location fork contacts with gear post, anti-reversely with member is relative with combination gear, skid, guarantee the anti-reverse braking parts with member away from anti-reverse with in ratchet, prevent from again anti-reversely with member, continuing to interfere with combination gear rotation and other parts in motor tractor.Above-mentionedly anti-reversely by braking parts side on member, expose combination gear outside.Facilitate like this stop part to coordinate with ratchet with anti-reverse.

Compared with prior art, the utility model has the advantage of: being arranged on the gyroaxis that magnetic-inductive device power outlet side makes progress is two, the first gyroaxis is provided with reduction gearing, the 3rd gyroaxis is provided with sector gear, reduction gearing respectively with magnetic induction ring set on gear of output end and sector gear engagement, the number of reduction gearing is one, a reduction gearing connects magnetic-inductive device on one side, another side connects the sector gear as clutch executive item, reduction gearing was rotated by magnetic-inductive device power output both can, also can be subject to sector gear spring reset direction rotation, more traditional magnetic induction clutch has lacked a reduction gearing and an one rotating shaft, thereby the number of space and part is achieved miniaturization, cost is minimized, the movement response time of whole mechanism shortens to some extent, sensitivity is improved, although there is the following problem causing because reducing by a reduction gearing: finally put on as the magnetic induction moment on the sector gear of clutch executive item not enough.But this problem can be by reducing to provide the power of the spring of reaction force on sector gear to solve, in addition, rotor portion is except the basic function as permanent magnet, also be provided with three functional configurations thereon, be respectively the anti-reverse ratchet portion that uses on the top of rotor portions, structure gear part and the first latch, anti-reverse can be with anti-reverse inconsistent and prevent the reversion of rotor by the braking parts on member with ratchet portion, the combination gear rotation of structure gear drive one side and then the rotation of drive magnetic-inductive device, the first latch drives with the clutch gear rotation of rotor portions coaxial rotating and passes through planetary gears, output wheel by transmission of power to the member of loading, therefore this rotor structure function is more integrated, in number of parts, inner space utilizes, complex structure degree, in the factors such as cost, find the most balanced solution, be convenient to guarantee the reliable of motor tractor function, the reduction of cost, less space hold is to adapt to more clients' motor tractor shell shape and the variation of installation dimension, avoided the increase necessary undue defect that increase shell sizes of motor tractor because of function, the risk of further having avoided motor tractor to install and use on existing washing machine, be that existing washing machine structure just can be used this motor tractor without doing any change, and the volume of motor tractor is little, shell structural strain's is just little, for the stability of motor tractor capability and performance provides sound assurance.

Accompanying drawing explanation

Fig. 1 is the expansion longitudinal section of the utility model embodiment;

Fig. 2 is that the utility model embodiment conceals the perspective view after shell;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the vertical view (sector gear and clutch cam disengaged condition) of the utility model embodiment magnetic induction clutch part;

Fig. 5 is the vertical view (sector gear and clutch cam fastening state) of the utility model embodiment magnetic induction clutch part;

Fig. 6 is the expansion longitudinal section of Fig. 5.

Fig. 7 is the cutaway view (rotor portions and clutch gear fastening state) of the utility model embodiment rotor portion;

Fig. 8 is the cutaway view (rotor portions and clutch gear released state) of the utility model embodiment rotor portion;

Fig. 9 is the structural representation (rotor rotates towards correct direction) of the anti-reverse part of the utility model embodiment;

Figure 10 is the structural representation (rotor is towards the counter-rotation of correct direction) of the anti-reverse part of the utility model embodiment;

Figure 11 is the revolved sectional view of Figure 10;

Figure 12 is combination gear and the anti-reverse vertical view with member confined state in the utility model embodiment;

Figure 13 is the cutaway view of combination gear in the utility model embodiment;

Figure 14 is the vertical view that is combined with the anti-reverse rotor with ratchet and structure gear in the utility model embodiment;

Figure 15 is the perspective view of clutch operating lever in the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.

As shown in Fig. 1～15, it is a preferred embodiment of the present utility model.

A motor tractor, following parts are all positioned at a shell 16, comprise the rotor portions 1 being arranged on armature spindle 11, and can carry out with rotor portions 1 clutch gear 6 of clutch, and rotor portions 1 is a part as the motor 17 of power source.On the side face of clutch gear 6, there is all the time the side face tooth 61 with driven wheel portion 151 engagements of planetary gears 15, driven wheel portion 151 meshes by big retarding gear 20 and output wheel 9 transmissions, 9 of output wheels are in transmission connection with load member 14, load member 14 in the present embodiment is with tooth-strip part, output wheel 9 is gear, volume on the final band of output wheel 9 rotation dynamic load member 14.Load member also can be joined steel wire rope by the cam of non-gear and be formed

The top of rotor portions 1 has anti-reverse by ratchet portion 131 and structure gear part 132, rotor portions 1 comprises permanent magnet 12 and combination member 13, permanent magnet 12 is combined in the periphery of combination member 13, anti-reversely by ratchet portion 131 and structure gear part 132, is arranged on combination member 13.

One side of armature spindle 11 is provided with the first gyroaxis 2a, the 3rd gyroaxis 2c and magnetic induction axle 21; On the first gyroaxis 2a, be coaxially arranged with combination gear 5 and anti-reverse with member 3, combination gear 5 and the 132 transmission engagements of structure gear part, and the viscosity lubricating grease 10 of smearing at place, the anti-reverse junction surface with member 3 and combination gear 5, anti-reverse with on member 3, have in order to anti-reverse by ratchet 131 competing braking parts 31, anti-reversely by braking parts 31 sides on member 3, expose combination gear 5 outsides.

On magnetic induction axle 21, be coaxially provided with input gear 22 and magnetic induction ring 23, input gear 22 is provided with permanent magnet 221, magnetic induction ring 23 is set in outside the permanent magnet 221 of input gear 22, and described combination gear 5 meshes with structure gear part 132 and input gear 22 transmissions respectively; On the first gyroaxis 2a, be also provided with reduction gearing 18, the 3rd gyroaxis 2c is provided with sector gear 19, the gear wheel portion of reduction gearing 18 and 231 engagements of the gear of output end on magnetic induction ring 23, the pinion part of reduction gearing 18 and sector gear 19 engagements, the sidewall of sector gear 19 has pothook 191; One side of sector gear 19 be provided with in order to sector gear 19 on the pothook 191 card clutch cam 24 of joining, the opposite side of sector gear 19 is provided with the first spring 4a that the pothook 191 that makes on sector gear and clutch cam 24 keep disengaged condition; Clutch cam 24 is release gear 152 engagements with planetary gears 15 by speedup wheels 25.The material of magnetic induction ring 23 is aluminium, copper or other similar materials, and the material of the gear of output end 231 connecting as one with magnetic induction ring 23 is plastics.

Clutch gear 6 is coaxially arranged on armature spindle 11 and can moves up and down with rotor portions 1, the upper surface of rotor portions 1 is provided with the first latch 133, the lower surface of clutch gear 6 is provided with the second latch 62 matching with the first latch 133, the upper surface of clutch gear 6 is provided with braking latch 63, between clutch gear 6 and rotor portions 1, be supported with and make both keep the second spring 4b of separation trend, the top of clutch gear 6 is provided with the clutch operating lever 7 of energy deflection, the lower surface of clutch operating lever 7 has high plane 71 and the low plane 72 that can contact with the upper surface of clutch gear 6, between high plane 71 and low plane 72, by inclined-plane 73 transition, connect, the top of clutch gear 6 is also provided with and the brake bar 8 of braking latch 63 card and joining, under the state contacting with high plane 71 in the upper surface of clutch gear 6, the elastic force that clutch gear 6 overcomes the second spring 4b moves down so that the first latch 133 and the second latch 62 engagements, simultaneously, brake bar 8 is separated with braking latch 63, under the state contacting with low plane 72 in the lower surface of clutch gear 6, clutch gear 6 moves under the elastic force effect of the second spring 4b so that the first latch 133 and the second latch 62 depart from, simultaneously, brake bar 8 snaps in braking latch 63.

Clutch operating lever 7 is fan-shaped, and one end of clutch operating lever 7 is rotated and is arranged on the second gyroaxis 2b above, has arcuate socket 74 on clutch operating lever 7, and armature spindle 11 is through this arcuate socket 74, and arcuate socket 74 can relative armature spindle 11 slippages.

Clutch operating lever 7 drives deflection by output wheel 9, on the end face of output wheel 9, there is the pushing block 91 raising up, and the deep-slotted chip breaker 92 of indent, pushing block 91 can promote to coordinate with the side of clutch operating lever 7, the lower surface of clutch operating lever 7 has the promotion post 75 inserting in deep-slotted chip breaker 92, and the promotion forming in another direction coordinates.

Combination gear 5 with anti-reverse with member 3 over against end face on be provided with inner fovea part 51, inner fovea part 51 coaxially arranges with the centre of gyration of combination gear 5, the anti-reverse part with member 3 stretches into the junction surface of inner fovea part 51 formation and combination gear 5 downwards, and viscosity lubricating grease 10 is applied in inner fovea part 51.

The bottom surface of inner fovea part 51 be provided with evagination and with the annular wall 52 of the coaxial setting of the centre of gyration of combination gear 5, this annular wall 52 is positioned at inner fovea part 51 inner fovea part 51 is divided into inside and outside two parts, the anti-reverse cannelure 35 embedding for annular wall 52 that is provided with member 3 corresponding end-faces, the anti-reverse sidewall with member 3 has curved elasticity support arm 32, and the outer end of elasticity support arm 32 has the friction part 321 inconsistent with described annular wall 52 outer peripheral faces.

Elasticity support arm 32 has that the centre of gyration with combination gear 5 be arranged in parallel and to downward-extension limited post 322.

Anti-reverse with member 3 be provided with perforation 33.

Anti-reversely with contiguous braking parts 31 positions on member 3, be provided with limited location fork 34.

The course of work of motor tractor is as follows:

The motor of motor tractor is not when switching on, put on the external load of load on member 14 made clutch operating lever 7 by the clutch gear 6 with rotor portions 1 arranged coaxial overcome the second spring 4b try hard to recommend into so that the first latch 133 mesh with the second latch 62, simultaneously, magnetic induction arrangement of clutch is not because rotating power output without spin, therefore sector gear 19 its pothook 191 under the effect of reaction the first spring 4a is disengaged condition with clutch cam 24, as shown in Fig. 4,7.

When motor is when switching on, the first latch 133 of rotor portions 1 drives clutch gear 6 rotations, clutch gear 6 drives driven wheel portion 151 rotations of planetary gears 15, meanwhile, the structure gear part 132 of rotor portions 1 drives combination gear 5 rotations as the magnetic induction arrangement of clutch power side of input that are arranged on opposite side, combination gear 5 drives input gear 22 rotations, input gear 22 drives permanent magnet 221 rotations by torsion spring 26, the rotating magnetic field that the rotation of permanent magnet 221 produces makes magnetic induction ring 23 follow rotation, gear of output end 231 on magnetic induction ring 23 drives reduction gearing 18, reduction gearing 18 drives sector gear 19 to overcome the reaction force rotation of the first spring 4a, until the pothook 191 on sector gear 19 snaps in clutch cam 24, and keep energising and engaging always with motor, as Fig. 5, shown in 6.Under the state mutually engaging with clutch cam 24 at pothook 191, comprising clutch cam 24 can not rotate at the speedup wheels 25 of interior mutual interlock, therefore belong to planetary gears 15 1 sides and can not rotate with the release gear 152 of speedup wheels 25 interlocks, can only be that planetary gears 15 the opposing party rotate as the driven wheel portion 151 of driving wheel and drive big retarding gear 20 and output wheel 9 rotations, final output wheel 9 rotarily drives volume on load member 14.Because volume on could starting under the precondition that load member 14 must engage with clutch cam 24 mutually at the pothook 191 of sector gear 19, so from motor 17 be energized to load member 14 start volume there is certain time interval, the magnetic induction clutch that the utility model is announced only arranges a reduction gearing 18 at magnetic induction force output, and then drive the capable gear 19 of fan as clutch executive item rotate and mutually engage with clutch cam 24, this magnetic induction clutch is quick on the draw, from electric motor starting start to engaging the needed time interval short, part is still less beneficial to the miniaturization of number of parts and product space, can also save cost in addition, little pulling force the first spring 4a using mates with magnetic induction force carries out reliably function.

As shown in Fig. 5～8, electrical power state, rotor portions 1 rotation, load member 14 is driven to be rolled onto while reaching final position gradually, output wheel 9 is rotated in the forward, pushing block 91 on output wheel 9 is stirred clutch operating lever 7, make clutch operating lever 7 produce to swing and move to low plane 72 from its high plane 71, while clutch gear 6 is coaxial upward sliding under the effect of the second spring 4b, position switches to low plane 72 from the high plane 71 of clutch operating lever 7, thus, the second latch 62 of clutch gear 6 from rotor portions 1 the clamped position of the first latch 133 depart from and lose the power of upper volume direction, now in order to prevent that clutch gear 6 from externally loading, rotate under reaction and the member 14 that causes loading is return, also on the subtend face with clutch gear 3, be provided with brake bar 8, after clutch gear 6 departs from rotor portions 1, brake bar 8 snaps in the braking latch 63 on the upper surface of clutch gear 6 immediately, so the rotation trend of clutch gear 6 is able to by locking, the output wheel of interlock is limited to the rotation of outside load direction with it, so as long as not power-off of motor, load member 14 will remain on the final position of volume always.

As Fig. 1, 4, 6, shown in 7, after motor power-off, rotor portions 1 is stopped the rotation, combination gear 5, input gear 22 and permanent magnet 221 be no longer rotation all, rotating magnetic field disappears, magnetic induction ring 23 no longer produces and makes sector gear 19 maintain with clutch cam 24 revolving force engaging, now, sector gear 19 is under the effect of the first spring 4a, exit the fastening state with clutch cam 24, the limit rotation of speedup wheels 25 that is connected to release gear 152 1 sides of planetary gears 15 is removed, in planetary wheeling mechanism 15, remove with release gear 152 limit rotation of speedup wheels 25 interlocks, output wheel 9 under the load effect of load member 14 towards with on roll up opposite direction direction return, output wheel 9 is by promoting the promotion of post 75 and deep-slotted chip breaker 92 sidewalls, drive is again stirred clutch operating lever 7 generation swings and is moved to high plane 71 from its low plane 72, simultaneously, promote the coaxial lower slider of elastic force that clutch gear 6 overcomes the second spring 4b, clutch gear 6 positions switch to high plane 71 from the low plane 72 of clutch operating lever 7, paramount one side is switched from the low one side of clutch operating lever 11 in position, thus, clutch gear 6 is got back to the position of the first latch 133 engagements in the second latch 62 on it and rotor portions again, subsequently, load member 14 continues to return until arrive origin-location towards the direction of external load.

Anti-reverse operation principle: as shown in Figure 9, when rotor portions 1 is rotated towards correct direction, the anti-reverse member 3 of using rotates with combination gear 5 under 10 effects of viscosity lubricating grease, until anti-reverse, by the braking parts 31 on member 3, leave and be arranged on anti-reverse ratchet portion 131 positions of using that configure with anti-reverse use member 3 subtends in rotor portions 1, rotor portion 1 can normally rotate; At this moment limited location fork 34 is conflicted and is coordinated with the gear post in motor tractor, anti-reversely with member 3 is relative with combination gear 5, skid, guarantee the anti-reverse braking parts 31 with member away from anti-reverse with in ratchet portion 131, prevent from again anti-reversely with member 3, continuing to interfere with other parts in combination gear 5 rotations and motor tractor.

As shown in figure 10, when rotor portion 1 is during towards counter-rotation with correct direction, the anti-reverse member of using rotates with combination gear 5 under 10 effects of viscosity lubricating grease, until anti-reverse anti-reverse ratchet portion 131 detent positions of using with the braking parts 31 conflict subtend configurations on member 3 must not be reversed rotor.Play anti-reverse effect.

Claims (10)

1. a motor tractor, comprise the rotor portions (1) being arranged on armature spindle (11), and can carry out with rotor portions (1) clutch gear (6) of clutch, on the side face of clutch gear (6), there is all the time the side face tooth (61) with driven wheel portion (151) engagement of planetary gears (15), driven wheel portion (151) is by big retarding gear (20) and output wheel (9) transmission engagement, and output wheel (9) is in transmission connection with load member (14); It is characterized in that: the top of described rotor portions (1) has anti-reverse by ratchet portion (131) and structure gear part (132), and a side of armature spindle (11) is provided with the first gyroaxis (2a), the 3rd gyroaxis (2c) and magnetic induction axle (21); On the first gyroaxis (2a), be coaxially arranged with combination gear (5), anti-reverse by member (3) and reduction gearing (18), described combination gear (5) and structure gear part (132) transmission engagement, and the viscosity lubricating grease (10) of smearing at place, the anti-reverse junction surface with member (3) and combination gear (5), described anti-reverse with on member (3), have in order to the described anti-reverse use competing braking parts of ratchet (131) (31); On magnetic induction axle (21), be coaxially provided with input gear (22) and magnetic induction ring (23), input gear (22) is provided with permanent magnet (221), magnetic induction ring (23) is set in outside the permanent magnet (221) of input gear (22), and described combination gear (5) meshes with structure gear part (132) and input gear (22) transmission respectively; The 3rd gyroaxis (2c) is provided with sector gear (19), described reduction gearing (18) respectively with magnetic induction ring (23) on gear of output end (231) and sector gear (19) engagement, the sidewall of sector gear (19) has pothook (191); One side of described sector gear (19) be provided with in order to sector gear (19) on pothook (191) the card clutch cam (24) of joining, the opposite side of sector gear (19) is provided with the first spring (4a) that the pothook (191) that makes on sector gear and clutch cam (24) keep disengaged condition; Described clutch cam (24) is release gear (152) engagement with planetary gears (15) by speedup wheels (25).

2. motor tractor according to claim 1, it is characterized in that: described clutch gear (6) is coaxially arranged on described armature spindle (11) above and can moves up and down with rotor portions (1), the upper surface of rotor portions (1) is provided with the first latch (133), the lower surface of clutch gear (6) is provided with the second latch (62) matching with the first latch (133), the upper surface of clutch gear (6) is provided with braking latch (63), between described clutch gear (6) and rotor portions (1), be supported with and make both keep second spring (4b) of separation trend, the top of clutch gear (6) is provided with the clutch operating lever (7) of energy deflection, the lower surface of clutch operating lever (7) has high plane (71) and the low plane (72) that can contact with the upper surface of clutch gear (6), between high plane (71) and low plane (72), by inclined-plane (73) transition, connect, the top of clutch gear (6) is also provided with the brake bar (8) of joining with described braking latch (63) card, under the state contacting with high plane (71) in the upper surface of clutch gear (6), the elastic force that clutch gear (6) overcomes the second spring (4b) moves down so that the first latch (133) and the second latch (62) engagement, simultaneously, brake bar (8) is separated with braking latch (63), under the state contacting with low plane (72) in the lower surface of clutch gear (6), clutch gear (6) moves under the elastic force effect of the second spring (4) so that the first latch (133) departs from the second latch (62), simultaneously, brake bar (8) snaps in braking latch (63).

3. motor tractor according to claim 2, it is characterized in that: described rotor portions (1) comprises permanent magnet (12) and combination member (13), described permanent magnet (12) is combined in the periphery of combination member (13), described anti-reverse with ratchet portion (131) and structure gear part (132) be arranged on combination member (13).

4. motor tractor according to claim 2, it is characterized in that: described clutch operating lever (7) is fan-shaped, one end of clutch operating lever (7) is rotated and is arranged on the second gyroaxis (2b), on clutch operating lever (7), have arcuate socket (74), described armature spindle (11) is through this arcuate socket (74).

5. motor tractor according to claim 4, it is characterized in that: described clutch operating lever (7) drives deflection by described output wheel (9), on the end face of output wheel (9), there is the pushing block (91) raising up, and the deep-slotted chip breaker of indent (92), described pushing block (91) can promote to coordinate with the side of clutch operating lever (7), and the lower surface of described clutch operating lever (7) has the promotion post (75) in insertion deep-slotted chip breaker (92).

6. according to the arbitrary described motor tractor of claim 1～5, it is characterized in that: described combination gear (5) with anti-reverse with member (3) over against end face on be provided with inner fovea part (51), inner fovea part (51) coaxially arranges with the centre of gyration of combination gear (5), the described anti-reverse part with member (3) stretches into the junction surface of inner fovea part (51) formation and combination gear (5) downwards, and described viscosity lubricating grease (10) is applied in described inner fovea part (51).

7. motor tractor according to claim 6, it is characterized in that: the bottom surface of described inner fovea part (51) be provided with evagination and with the annular wall (52) of the coaxial setting of the centre of gyration of combination gear (5), this annular wall (52) is positioned at inner fovea part (51) inner fovea part (51) is divided into inside and outside two parts, the described anti-reverse cannelure (35) embedding for annular wall (52) that is provided with member (3) corresponding end-faces, the anti-reverse sidewall with member (3) has curved elasticity support arm (32), the outer end of elasticity support arm (32) has the friction part (321) inconsistent with described annular wall (52) outer peripheral face.

8. motor tractor according to claim 7, is characterized in that: described elasticity support arm (32) has that the centre of gyration with combination gear (5) be arranged in parallel and to the limited post (322) of downward-extension.

9. motor tractor according to claim 6, is characterized in that: describedly anti-reversely with member (3), be provided with perforation (33).

10. motor tractor according to claim 6, it is characterized in that: describedly anti-reversely by braking parts (31) side on member (3), expose combination gear (5) outside, describedly anti-reversely with the upper contiguous braking parts (31) of member (3) position, be provided with limited location fork (34).