CN203537212U - Flexible power transmission device - Google Patents

Abstract

A flexible power transmission device comprises an input shaft, a conductor cylinder, a conductor ring, a permanent magnet cylinder, a permanent magnet, an output shaft, a spline, and a spline sleeve. The conductor ring is arranged on an inner wall of the conductor cylinder; the permanent magnet is arranged on an outer wall of the permanent magnet cylinder; an air gap is arranged between the permanent magnet and the conductor ring; the permanent magnet cylinder is connected with the output shaft; the spline is connected with the input shaft; the spline sleeve is connected with the conductor cylinder; and the spline and the spline sleeve are connected. Compared with the prior art, the flexible power transmission device of the utility model rotates synchronously with other components, drives the conductor cylinder to adjust the flexible power transmission, and reduces the dynamic load disturbance due to the rotation speed difference change in adjusting the loading device, so that the adjustment is simple, stable and efficient.

Description

A kind of flexible power delivery apparatus

Technical field

The utility model patent belongs to drive technology field, relates in particular to a kind of power transmission.

Background technology

At present, power transmission is mainly mechanical type transmission system.And mechanical transmission system mainly can be divided into mechanical rigid transfer mode and mechanical flexibility transfer mode.

Mechanical rigid transfer mode mainly contains all kinds of machenical couplings, and advantage is to realize Synchronous Transmission, and transmission efficiency is very high.But it is very high that mechanical rigid transfer mode requires the centering of motor shaft and bearing axle, often because vibration abrasion affects its useful life.For main equipment or high-precision transmission system, centering installation difficulty is very large, once centering exists error, thereby drive system may be twisted off and cause a serious accident in the course of the work; In addition, when motor rotating speed when load starts reaches rated speed gradually from zero, current heating can burn out motor coil, damages motor.

Mechanical elasticity transfer mode can be avoided the shortcoming of some mechanical type rigid of transmission modes to a certain extent, allow the error of centralization in certain limit, but transmission efficiency is lower.

There is not Mechanical Contact, friction and wear in magnetic flexible dynamic transmission system, have overload protection function simultaneously, and transmission efficiency is higher, thereby, in some high pulling torque vibration fields, progressively replace mechanical rigid transfer mode and come transmitting torque and power.

In the utility application that is CN101834513A at application publication number, announced a kind of secondary series type permanent-magnet speed governor, it comprises tubular conductor rotor body, p-m rotor and adjuster, p-m rotor and tubular conductor rotor body are secondary series type, conductor rotor, as long as the width of a mobile conductor can be adjusted to active area 0 or 100%, has shortened adjustable range greatly.This speed regulator can be realized torque non contact transmission, to utilize thrust bearings to regulate, but the shape to adjuster in patent, feature relates to seldom, adjuster is arranged on bearing axle, because output shaft dynamic loading is larger, vibration on adjuster degree of regulation impact obviously, and utilizes thrust bearings to carry out axial adjustment to be not easy to carry out fine adjustment.

In the utility model patent that is CN202034886U at application publication number, announced a kind of permanent magnet coupling speed regulator, it comprises: tubular conductor rotor, tubular magnetism shielding hood, tubular p-m rotor, adjuster.Tubular magnetism shielding hood is between tubular conductor rotor and tubular p-m rotor, and tubular magnetism shielding hood and tubular conductor rotor and tubular p-m rotor are all gapped; Tubular conductor rotor and tubular p-m rotor edge be rotating shaft independent rotation separately, and axial location is constant; Under the effect of adjuster, tubular magnetism shielding hood slides vertically, and the effect magnetic field area of realizing between tubular p-m rotor and tubular conductor rotor changes, and its result changes load torque, rotation speed change.But this installs eccentric force, make device in non-equilibrium stress, affect the dynamic balancing of inputoutput unit, easily produce vibration and noise, this device is too simple and crude simultaneously, and reliability is also poor.

In the utility model patent that is CN202586711U at application publication number, announced a kind of permanent-magnet speed governor, it comprises: cage type conductor rotor, p-m rotor, fixed rotor and governor motion; Cage type conductor rotor surrounds p-m rotor; P-m rotor moves along axial direction opening and closing by governor motion; Governor motion is connected with fixed rotor; Fixed rotor is connected with p-m rotor by pinion and rack.The active area of the permanent-magnet speed governor of this utility model is the air gap between the conductor loops of cage type conductor rotor and the annular magnetic support of p-m rotor, therefore there is no axial force, the required push-pull effort of its governor motion is little.But it is larger that it moves axially distance, use the place of bearing arrangement more, increased manufacture and assembly difficulty, structure relative complex, reliability is poor, has increased the external diameter of driver part simultaneously, has affected dynamic balancing, easily causes larger vibration and noise.

Utility model content

The utility model regulates problem for flexible dynamic transmission, has proposed a kind of flexible power delivery apparatus, transmits the problem of stable regulation transmitting torque in order to solve flexible dynamic, has realized the stable regulation that flexible dynamic transmits.

A kind of flexible power delivery apparatus, a kind of flexible power delivery apparatus, comprise power shaft, conductor cylinder, conductor loops, permanent magnet cylinder, permanent magnet, output shaft, spline, spline housing, conductor loops is arranged on the inwall of conductor cylinder, and permanent magnet is arranged on the outer wall of permanent magnet cylinder, between permanent magnet and conductor loops, has air gap, permanent magnet cylinder is connected with output shaft, spline is connected with power shaft, and spline housing is connected with conductor cylinder, and spline is connected with spline housing.Because spline housing can move vertically on spline, and because spline housing links together by conductor cylinder and conductor loops, the movement of the moving belt moving-conductor ring by spline housing, thus the active area of conductor loops and permanent magnet changed, further change the moment of torsion of exporting.By spline housing, move output torque is reached after required moment of torsion, can be fixed on spline by key screw spline housing, can certainly spline housing is fixed on spline by other known method.Spline joint bearing capacity is high, centering good and be convenient to guiding advantage.Because spline is positioned at spline housing, have easily manufactured, cost is low, simple in structure, good stability, feature that noise is low.Device in the utility model and miscellaneous part synchronous rotary, and by driving conductor cylinder to carry out the adjusting of flexible dynamic transmission, while having reduced by regulating load device, because of speed discrepancy, change the interference of the dynamic loading of bringing, make to regulate to become simple, stable and efficient.

Preferably: the side near spline housing on conductor cylinder is provided with supporting surface, on the center of supporting surface, be provided with screwed hole, threaded rod is arranged in screwed hole, and the centre of the other end of power shaft is provided with cavity, in cavity, be provided with motor, motor is connected with the other end of threaded rod.Use the threaded rod size of regulation output moment of torsion more accurately.By motor, make threaded rod rotation can facilitate the size of rapid, accurate regulation output moment of torsion.When motor stops, by threaded rod nut, interact and realize the self-locking of conductor cylinder, thereby realize axially accurately locating of conductor cylinder.

Preferably: one end of threaded rod is connected with output shaft, threaded rod can and can not move vertically with respect to output shaft rotation.Because a part of weight of conductor cylinder and spline housing has threaded rod, bear, one end of threaded rod is connected with output shaft, can make like this stressed of threaded rod become simple beam structure from original cantilever beam structure, makes the stressed more even of threaded rod.Threaded rod can only carry out transmission by motor, can not be by output shaft transmission.

Preferably: the centre of one end of output shaft is provided with cavity, bearing is installed in cavity, one end of threaded rod is arranged in bearing.This structure is more simple, easily maintenance.

Preferably: also comprise motor tear ring, motor sliding ring is arranged on power shaft, and motor sliding ring is connected with motor.This scheme has solved the problem of power supply and the signal transmission of the embedded motor of high-speed rotating shaft.

Preferably: a circle permanent magnet is at least installed on permanent magnet drum outer wall, on the position corresponding with permanent magnet, a circle conductor loops is at least installed on the inwall of conductor cylinder.The object arranging is like this to make output shaft stressed evenly.

Preferably: on the left and right outer wall of permanent magnet cylinder, be separately installed with a circle permanent magnet, between permanent magnet, there is interval, on the position corresponding with permanent magnet, left and right two sides of conductor cylinder are separately installed with conductor loops, interval between permanent magnet is greater than the width of conductor loops, and the interval between conductor loops is greater than the width of permanent magnet.Therefore conductor loops can move to the top, interval between permanent magnet, and permanent magnet is positioned at the below at conductor loops interval, and conductor loops and permanent magnet are not interacted completely, thereby realizes output torque from the adjusting of 0-100%.

Preferably: permanent magnet is identical with the width of conductor loops.Design can make structure more compact like this, and the width that moves a conductor loops when conductor cylinder can be realized output torque from the adjusting of 0-100%.

Preferably: on the sidewall of spline, be provided with louvre, conductor cylinder supporting surface on be provided with louvre, on the support tube of permanent magnet cylinder, be provided with louvre.The setting of above-mentioned a series of louvres make the inner hot gas of a kind of flexible power delivery apparatus can with the cross-ventilation of left and right two sides, play the effect of heat radiation.

Preferably: the whole center of gravity that spline housing and conductor cylinder form is positioned at the inner chamber scope of spline housing.Do like this major part of the weight of the combination that can make spline housing and conductor cylinder and born by spline, be more conducive to the stable of this structure.

Beneficial effect:

Compared with prior art, device in the utility model and miscellaneous part synchronous rotary, and by driving conductor cylinder to carry out the adjusting of flexible dynamic transmission, while having reduced by regulating load device, because of speed discrepancy, change the interference of the dynamic loading of bringing, make to regulate to become simple, stable and efficient.

The utility model is controlled the rotating speed of embedded motor by signal transmission, turn to, drive conductor cylinder to move axially speed and forward and reverse movement, when motor stops, by threaded rod nut, interact and realize the self-locking of conductor cylinder, thereby realize axially accurately locating of conductor cylinder, install the adjusting of synchronizeing with power part and carrying out flexible dynamic transmission by driving conductor cylinder, while having reduced by regulating load device, because of speed discrepancy, change the interference of the dynamic loading of bringing, make to regulate to become simple, stable and efficient.

Accompanying drawing explanation

Fig. 1 is a kind of flexible power delivery apparatus structural representation.

Fig. 2 is conductor barrel structure schematic diagram.

Fig. 3 is input device structure schematic diagram.

Fig. 4 is spline and spline housing structural representation.

Fig. 5 is permanent magnet barrel structure schematic diagram.

Fig. 6 is output device structural representation.

Fig. 7 is adjusting device structural representation.

Reference numeral title is as follows:

1, power shaft; 2, slip ring; 3, spacing back-up ring; 4, spline housing; 5, spline; 6, bolt; 7, conductor cylinder; 8, bolt; 9, permanent magnet back-up ring; 10, permanent magnet; 11, conductor loops; 12, permanent magnet cylinder; 13, output shaft; 14, bearing; 15, bearing (ball) cover; 16, bolt; 17, threaded rod; 18, bolt; 19, nut; 20, bolt; 21, flat key; 22, sleeve; 23, bolt; 24, bolt; 25, flat key; 26, embedded motor; 27, louvre; 28, cavity; 29, louvre; 30, louvre; 31, screw; 32, cavity.

Embodiment

As shown in the figure, a kind of flexible power delivery apparatus, comprises input unit, output device and adjusting device.Input unit comprises power shaft 1, conductor cylinder 7, conductor loops 11; Adjusting device comprises spline 5, spline housing 4, motor 26, threaded rod 17, nut 19; Output device comprises permanent magnet 10, permanent magnet cylinder 12, output shaft.The cross section of power shaft 1 is stepped, and one end of power shaft 1 (left side in Fig. 1) is connected with transmission device.Spline 5 is cylindric, on the outer surface of tubular, is evenly equipped with spline, and spline 5 is connected with the other end of power shaft 1, and spline 5 is sleeved on power shaft 1, and by bolt 6, spline 5 is fixedly mounted on power shaft 1.Spline housing 4 is also cylindric, on the inner surface of spline housing 4, be evenly equipped with the spline corresponding with spline on spline 5, spline 5 is arranged in spline housing 4, the spline 5 formation spline joint that is connected with spline housing 4, and spline housing 4 can move left and right vertically on spline 5.On spline housing 4, have screwed hole, screw 31 is installed in screwed hole, after spline housing 4 moves on needed position on spline 5, tighten the screws 31, is fixed together spline housing 4 and spline 5.The left side of spline housing 4 is also provided with spacing back-up ring 3, and spacing back-up ring 3 is fixedly mounted on the left side of spline housing 4 by bolt 24, and when spline housing 4 moves to low order end to the right, spacing back-up ring 3 can not skid off from spline 5 spline housing 4.Spline has certain gap apart from the rightmost side of spline housing 4, when spline housing 4 is slided to the left, can not skid off from spline 5, plays the position-limiting action to spline housing 4.Spline housing 4 is connected by concaveconvex structure with conductor cylinder 7, and uses bolt 20 that spline housing 4 and conductor cylinder 7 are fixed together.Conductor cylinder 7 is also cylindric, and at least one conductor loops 11 is installed on the inner surface of conductor cylinder 7, and conductor loops 11 is for electric conductor and have magnetic conductivity, preferably uses copper as making material.Thereby conductor cylinder 7 also can be free to slide vertically in the moment of torsion that transmits power shaft 1 by spline housing 4.In the cylinder of permanent magnet cylinder 12, be provided with support tube, support tube and permanent magnet cylinder 12 are an integral body, and permanent magnet cylinder 12 is set on one end of output shaft 13 by support tube, and by bolt 16, the two is fixed together.The other end of output shaft 13 is connected with load.On the outer surface of permanent magnet cylinder 12, on the position corresponding with conductor loops 11, at least one permanent magnet 10 is installed, between permanent magnet 10 and conductor loops 11, has certain air gap.Permanent magnet cylinder 12 can be metal material or nonmetallic materials, as long as have some strength and rigidity; Permanent magnet 10 adopts strong permanent magnet material to make.The both sides of permanent magnet cylinder 12 are also separately installed with permanent magnet back-up ring 9, and permanent magnet back-up ring 9 is fixedly mounted on permanent magnet cylinder 12 by bolt 8, to prevent that permanent magnet 10 is to two side vibrations.On conductor cylinder 7, a side of close spline housing is provided with inside and is provided with supporting surface, and supporting surface is arranged on the left side of conductor cylinder 7 in the present embodiment, and supporting surface and conductor cylinder 7 are an integral body.The centre of supporting surface is provided with through hole, the center line overlaid of the center line of through hole and power shaft 1.In described through hole, be embedded with nut 19, nut 19 is fixedly mounted on supporting surface by bolt 18, makes nut 19 and conductor cylinder 7 become an integral body.Threaded rod 17 is arranged in nut 19, and nut 19 forms threaded rod pair of nut with threaded rod 17.Can certainly screwed hole be directly directly set on the center of supporting surface, threaded rod 17 is arranged in screwed hole.One end of threaded rod 17 is connected with power shaft 1 or output shaft 13 by bearing, and threaded rod 17 can not be moved axially with respect to power shaft 1 or output shaft 13, but threaded rod 17 can be with respect to power shaft 1 or output shaft 13 rotations.Output shaft 13 arranges a cavity 28 near the middle part of one end of output shaft 1 in the present embodiment, and at interior installation one bearing 14 of cavity 28, the outer ring of described bearing 14 and the cavity in output shaft 28 adopt tight fit, the other end of threaded rod 17 is arranged in the inner ring of bearing 14, the inner ring of the other end of threaded rod 17 and bearing 14 adopts tight fit, adopts tight fit can prevent the axial motion of threaded rod 17.In order to protect better the useful life of bearing 14 and to prevent the vibration of bearing 14, the left side of bearing 14 is also provided with bearing (ball) cover 15.Rotation by threaded rod 17 regulates moving left and right of conductor loops 11.Use threaded rod 17 size of regulation output moment of torsion more accurately, avoided the moment of torsion directly bringing by mobile spline housing 4 to transmit big or small inaccuracy.Further there is a cavity 32 middle part of the other end of power shaft 1, and motor 26 is fixedly mounted in cavity 32 by bolt 23, and the center line of the output shaft of motor 26 is positioned on the center line of power shaft 1.One end of threaded rod 17 is connected with the output shaft of motor 26.On motor power shaft, be provided with flat key 25, on threaded rod 17, be provided with flat key 21, on sleeve 22, be provided with the keyway corresponding with flat key 25, flat key 21, by sleeve 22, flat key 25, flat key 21, threaded rod 17 is connected with power shaft 1.Because motor has self-locking action after shutting down, threaded rod 17 can not rotate yet, and the size of output torque is stable, and further motor 26 can rotate accurately, accurately the size of regulation output moment of torsion.In this structure, because a part of weight of conductor cylinder 7 and spline housing 4 acts on threaded rod 17, due to be used in conjunction with the further stability of strengthened thread bar 17 of motor 26 with bearing 14, make the stressed more even of threaded rod.Reduced threaded rod bulk deformation amount, thereby reduced noise and vibration and improved transmitting accuracy.

Described device is when regulating, and motor 26, threaded rod 17, nut 19, spline 5, spline housing 4, conductor cylinder 7 rotatablely move jointly with power shaft 1, does not have each other relative motion.When motor 26 receives after control signal, drive threaded rod 17 to rotate, because threaded rod 17 itself does not move, drive nut 19 is done axial motion, because spline housing 4, conductor cylinder 7, nut 19 are interconnected to form an integral body, the axial motion of nut drives spline housing 4 and conductor cylinder 7 to move axially.Active area between conductor cylinder 7 upper conductor rings 11 and permanent magnet 10 is changed, and there is change in the size that has played output torque.

Described conductor loops 11 is at least a circle, can be a circle, can be also multi-turn, has adopted in the present embodiment two circles, and in the left and right of conductor cylinder 7, two sides arrange respectively a circle conductor loops 11.Every circle conductor loops 11 can be a complete circle.Also can be a circle of segmented, that is to say the conductor plate of piecemeal is coiled on the inwall that a cast is arranged on conductor cylinder 7 circlewise.The permanent magnet 10 being arranged on permanent magnet cylinder 12 is at least a circle, can be a circle, can be also multi-turn, adopted in the present embodiment two circles, in the left and right of permanent magnet cylinder 12 two sides, certain interval that is separated by between one circle permanent magnet 10, two circle permanent magnets 10 is set respectively.Every circle permanent magnet 10 can be a complete circle.Also can be a circle of segmented, that is to say the permanent magnet plate of piecemeal is coiled on the outer wall that a cast is arranged on permanent magnet cylinder 10 circlewise.Number, the size of width and the quantity of conductor plate of conductor loops 11 number of turns can be adjusted according to the size of required load; The number of turns of same permanent magnet 10 number, width size, the quantity of permanent magnet plate and the size of magnetic also can adjust according to the size of load.

In the present embodiment conductor loops 11 be arranged on permanent magnet 10 directly over, the width of conductor loops 11 is identical with the width of permanent magnet 10.Interval between two permanent magnets 10 is greater than the width of single conductor loops 11, when conductor cylinder 7 is moved to the left, only needs the width of a mobile conductor loops 11 just can make conductor loops 11 and the active area of permanent magnet 10 become 0.Therefore the present embodiment can be realized active area between conductor loops 11 and permanent magnet 10 and be changed to 100% from 0, has greatly shortened adjustable range.

Described spline 5 and spline housing 4, be to utilize spline joint bearing capacity high, and centering is good and be convenient to the advantage of guiding, is applicable to the feature of the moving connection of this device.

Described conductor cylinder 7 and spline housing 4, in structured design process, the center of gravity of the combination of conductor cylinder 7 and spline housing 4 is held in place within the scope of the inner chamber of spline housing 4, because spline 5 has certain width, can make like this total weight of combination drop on spline 5, threaded rod 17 need not bear the weight of spline housing 4 and conductor cylinder 7, has reduced threaded rod 17 due to the stressed distortion producing, thereby has further guaranteed the accuracy that threaded rod 7 regulates.Described motor 26, transmits in electric energy and signal of telecommunication mode and adopts tear ring 2 energising forms at it, and slip ring 2 is arranged on power shaft 1, and slip ring 2 is connected by wire with motor 26.

On the supporting surface of conductor cylinder 7, have a plurality of louvres 30, its object is to make the air of supporting surface two sides to produce convection current, thereby reaches the object of heat radiation.On the supporting surface of spline 5, have a plurality of louvres 29, its object is to make the air of spline 5 two sides to produce convection current, thereby reaches the object of heat radiation.On the support tube of permanent magnet cylinder 12, have a plurality of louvres 27, its object is that the air of support tube two sides produces convection current, thereby reaches the object of heat radiation.

Operation principle of the present utility model is as follows: the permanent magnet 10 that permanent magnet cylinder 12 outsides are arranged can form certain magnetic field in air gap, when conductor cylinder 7 rotates with power shaft, the conductor loops 11 of its disposed inboard is done cutting magnetic induction line motion just can produce induced current in conductor loops 11, this electric current and original magnetic field interaction, can make permanent magnet cylinder 12 be subject to one with the consistent electromagnetic torque of conductor cylinder 7 direction of rotation, and permanent magnet cylinder 12 is rotated, thereby play the effect of flexible transmitting torque.When embedded motor 26 receives after control signal, drive threaded rod 17 to rotate, produced relative motion, by threaded rod and nut, becoming rotation is axial motion, thereby band moving-conductor cylinder 7 and spline housing 4 are connected, body moves left and right vertically, active area between conductor loops 11 and permanent magnet 10 is changed, in the present embodiment because active area can be realized the adjustable range from 0-100%, the variation of output torque also can realize the adjustable range of 0-100% so, thereby has realized the object of regulation output moment of torsion.

Claims (10)

1. a flexible power delivery apparatus, comprise power shaft (1), conductor cylinder (7), conductor loops (11), permanent magnet cylinder (12), permanent magnet (10), output shaft (13), conductor loops (11) is arranged on the inwall of conductor cylinder (7), permanent magnet (10) is arranged on the outer wall of permanent magnet cylinder (12), between permanent magnet (10) and conductor loops (11), there is air gap, permanent magnet cylinder (12) is connected with output shaft (13), it is characterized in that: also comprise spline (5), spline housing (4), spline (5) is connected with power shaft (1), spline housing (4) is connected with conductor cylinder (7), spline (5) is connected with spline housing (4).

2. device according to claim 1, it is characterized in that: also comprise motor (26), threaded rod (17), the upper side near spline housing (4) of conductor cylinder (7) is provided with supporting surface, on the center of supporting surface, be provided with screwed hole, threaded rod (17) is arranged in screwed hole, the centre of the other end of power shaft (1) is provided with cavity (32), in cavity (32), be provided with motor (26), motor (26) is connected with the other end of threaded rod (17).

3. device according to claim 2, is characterized in that: one end of threaded rod (17) is connected with output shaft (13), and threaded rod (17) can and can not move vertically with respect to output shaft (13) rotation.

4. device according to claim 3, it is characterized in that: the centre of one end of output shaft (13) is provided with cavity (28), bearing (14) is installed in cavity (28), and one end of threaded rod (17) is arranged in bearing (14).

5. device according to claim 2, is characterized in that: also comprise motor sliding ring (2), it is upper that motor sliding ring (2) is arranged on power shaft (1), and motor sliding ring (2) is connected with motor (26).

6. device according to claim 1, it is characterized in that: a circle permanent magnet (10) is at least installed on permanent magnet cylinder (12) outer wall, on the position corresponding with permanent magnet (10), a circle conductor loops (11) is at least installed on the inwall of conductor cylinder (7).

7. device according to claim 6, it is characterized in that: on the left and right outer wall of permanent magnet cylinder (12), be separately installed with a circle permanent magnet (10), between (10), there is interval in permanent magnet, on the position corresponding with permanent magnet (10), left and right two sides of conductor cylinder (7) are separately installed with conductor loops (11), interval between permanent magnet (10) is greater than the width of conductor loops (11), and the interval between conductor loops (11) is greater than the width of permanent magnet (10).

8. device according to claim 7, is characterized in that: permanent magnet (10) is identical with the width of conductor loops (11).

9. device according to claim 1, it is characterized in that: on the sidewall of spline (5), be provided with louvre (29), conductor cylinder (7) supporting surface on be provided with louvre (30), on the support tube of permanent magnet cylinder (12), be provided with louvre (27).

10. device according to claim 1, is characterized in that: the center of gravity of the combination that spline housing (4) and conductor cylinder (7) form is positioned at the inner chamber scope of spline housing (4).

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