Summary of the invention
Technical problem to be solved by this invention is at above shortcomings in the prior art, provides that a kind of volume is little, transmission efficiency is high, energy-saving material-saving is remarkable, can be applicable to that big-and-middle-sized power apparatus uses, application area planet speed regulator extremely widely.
The technological scheme that solution the technology of the present invention problem is adopted is that this planet speed regulator comprises support 4, wherein, the main power circuit driving mechanism and the secondary power circuit driving mechanism that are connected by tie-plate 6 are arranged in the support, main power circuit driving mechanism input end is connected with main power shaft 19, its output terminal is connected with deceleration output shaft 1, secondary power circuit driving mechanism, Control Shaft 15 connects with secondary power circuit driving mechanism by transmission.
Described transmission can adopt bevel gear pair mechanism or driving mechanisms such as cylindrical gear pair mechanism or link chain mechanism.
Speed regulator of the present invention adopts the major and minor two high-power different purposes of actuation mechanism one-tenth capable of being combined, the different planet speed regulators that connect size of installing of spreading according to the difference of bearing capacity.
Described main power circuit driving mechanism can adopt single secondary two-row planetary gear driving mechanism, it comprises the internal gear 26 that is connected with main power shaft 19, first internal gear 5 that is connected with tie-plate 6, first sun gear 27 with internal gear 26 engagements, simultaneously with the first identical planetary pinion 3 of 2N technical parameter of first sun gear 27 and 5 engagements of first internal gear, N root planet axis 7, the first left supporting disk 2 and the first right supporting disk 8, N root planet axis 7 is passed 2N first planetary pinion 3 respectively and is connected with the first left supporting disk 2 and the first right supporting disk 8, is connected with deceleration output shaft 1 on the first left supporting disk 2.
Described secondary power circuit driving mechanism can adopt single planetary gear reducing mechanism, promptly comprise second sun gear 23 that connects with Control Shaft 15 by transmission, be fixed on secondary annulus 12 on the support 4, respectively with the N of second sun gear 23 and secondary annulus 12 engagements
1Individual second planetary pinion 11, N
1 Root planet axis 13, the second left supporting disk 10 and the second right supporting disk 22, N
1 Root planet axis 13 is passed N second planetary pinion 11 respectively and is connected with the second left supporting disk 10 and the second right supporting disk 22, and wherein the second left supporting disk 10 connects in the endoporus of the middle part of support 4 and with described tie-plate 6 by bearings.
Preferably, also can include the secondary two-row planetary gear driving mechanism of the identical list of two nested structures in the described main power circuit driving mechanism, include the identical single planetary gear reducing mechanism of two nested structures in the described secondary power circuit driving mechanism, single secondary planetary gear mechanism of two covers and the single planetary gear reducing mechanism of two covers are symmetrical arranged respectively, supporting disk 47 passes through bearing respectively in having between two cover two-row planetary gear driving mechanisms, steel ball seat 57 and steel ball 35 support each end of first sun gear 27 of two symmetries, the technical parameter of two first planetary pinions 3 can be identical also can be different, two first planetary pinion 3 shared N root planet axis 7.
The present invention can also adopt the main power circuit driving mechanism of this form, also include a secondary planetary gear mechanism in the promptly main power circuit driving mechanism, this planetary gear mechanism comprises the internal gear 38 that is fixed on the support 4, be connected in sun gear 31 on the speedup output shaft 33, simultaneously and the identical two-row planetary gear 36 of N technical parameter of sun gear 31 and internal gear 38 engagements, connect with the 3rd left supporting disk 34 and the first right supporting disk 8 respectively again after having N root planet axis 18 to pass individual first planetary pinion 3 of 2N and N two-row planetary gear 36 simultaneously.
Adopt at main power circuit driving mechanism under the situation of single secondary two-row planetary gear driving mechanism, described secondary power circuit driving mechanism can adopt star wheels transport mechanism, be that described star wheels transport mechanism comprises the double crank shaft that is fixed together by transmission and Control Shaft 15, is fixed on the 3rd internal gear 41 on the support 4, two identical and staggered 180 ° of whiles of technical parameter and the third line star gear 40 of the 3rd internal gear 41 engagements, the 4th left supporting disk the 39, the 4th right supporting disk 43 that connects with tie-plate 6, on the circumference of the third line star gear 40 distribution circle Dz, be distributed with N
2Individual rolling star-wheel, the rolling star-wheel is formed by having symmetry double-crank of 180 ° of layouts and the spider gear shaft 42 that twin shaft is stretched, and the throw of eccentric of double-crank is identical on the throw of eccentric of double crank shaft and the spider gear shaft 42, on the third line star gear 40 distribution circle Dx circumference N is arranged
2Individual perforation dx has N
2 Root supporting axle 44 passes perforation dx and rolling star-wheel interlaced arrangement and the 4th left supporting disk 39 and the 4th right supporting disk 43 are connected is whole planet carrier.
Preferably, include the secondary two-row planetary gear driving mechanism of the identical list of two nested structures in the described main power circuit driving mechanism, include the identical star wheels transport mechanism of two nested structures in the described secondary power circuit driving mechanism, single secondary two-row planetary gear driving mechanism of two covers and two cover star wheels transport mechanisms are symmetrical arranged respectively, supporting disk 47 passes through bearing respectively in having between two cover two-row planetary gear driving mechanisms, steel ball seat 57 and steel ball 35 support each end of first sun gear 27 of two symmetries, the technical parameter of two first planetary pinions 3 can be identical also can be different, two first planetary pinion 3 shared N root planet axis 7.
Adopt under the situation of star wheels transport mechanism at described secondary power circuit driving mechanism, also can include a secondary planetary gear mechanism in the described main power circuit driving mechanism, this planetary gear mechanism comprises the internal gear 38 that is fixed on the support 4, be connected in sun gear 31 on the speedup output shaft 33, simultaneously and the identical two-row planetary gear 36 of N technical parameter of sun gear 31 and internal gear 38 engagements, have N root planet axis 18 to pass simultaneously behind 2N first planetary pinion 3 and N the two-row planetary gear 36 and connect with the 3rd left supporting disk 34 and the first right supporting disk 8 respectively again.
Speed regulator of the present invention is except that having for the premium properties of large power high voltage motor driving arrangement speed governing operation to realize also being applicable to load tests such as AC induction motor, retarder, speed changer the significant saving metal material and energy benefit.
Among the present invention, above-mentioned N, N
1, N
2Span can be 2~15, look actual conditions and get.
Preferably, among the present invention, first sun gear 27 in the main power circuit driving mechanism, first planetary pinion 3, first internal gear 5 all can float, and second sun gear 23 in the secondary power circuit driving mechanism, second planetary pinion 11 all can float.Like this, engagement does not have the additional drag phenomenon freely between the gear, thereby suitable high speed transmission, has also improved transmission efficiency simultaneously.
The single secondary or two secondary compound planetary gearings that are used for main power circuit driving mechanism are taked ternary full floating (full floating is meant that first sun gear 27, first planetary pinion 3, first internal gear 5 all float) mode; The single planetary gear reducing mechanism that is used for secondary power circuit driving mechanism is taked binary unsteady (being meant that second sun gear 23, second planetary pinion 11 all float) mode, and these two kinds of ralocatable modes have effectively guaranteed the endurance and the flexibility of planet speed regulator transmission.
The central shaft of described secondary power circuit driving mechanism is a hollow sleeve, and hollow sleeve connects with described transmission, and main power shaft 19 passes hollow sleeve and connects with main power circuit driving mechanism.For the transmission device that secondary power circuit driving mechanism adopts single planetary gear reducing mechanism, be connected with hollow sleeve 20 on the described bevel gear wheel 17, the internal tooth engagement of the external tooth of hollow sleeve 20 and second sun gear 23, main power shaft 19 passes hollow sleeve 20 and connects with main power circuit driving mechanism; For the transmission device that secondary power circuit driving mechanism adopts star wheels transport mechanism, be connected with hollow sleeve 20 on the described bevel gear wheel 17, be with the double-crank eccentric bushing 45 that meshes with the third line star gear 40 on the hollow sleeve 20 and constitute double crank shafts, main power shaft 19 passes hollow sleeve 20 and connects with the input end of main power circuit driving mechanism.
In addition, also can increase internal gear 26 between first sun gear 27 and main power shaft 19, internal gear 26 can also satisfy the unsteady requirement of first sun gear 27 except having the coupling function.
The present invention had both possessed the premium properties that drives machinery speed governing operations such as water pump, blower fan, grinding machine for large power high voltage motor to realize beyond the significant saving metal material and energy benefit, can use for powerful device such as motor, retarder, speed changer or the like test stand again, experimentation cost is low especially, also can be used as the wind power generation speed increasing device in addition to help wind-electricity integration.Have that volume is little, bearing capacity is big, structural rigidity is good, stable drive, easy to maintenance, advantages such as the life-span is long, efficient is high, reliable operation, applied range.
The invention has the beneficial effects as follows: (1) adopts tie-plate 6 to realize the interlock between single secondary two-row planetary gear and single planetary gear reducing mechanism or the star-wheel transmitting assemblies, and supporting is convenient, work is more reliable; (2) when adopting bevel gear pair to carry out transmission between secondary power circuit driving mechanism and the Control Shaft, the axial dimension of traditional speed regulator has been shortened in the combination of hollow sleeve 20 and bevel gear wheel 17; (3) adopt the symmetric arrangement mode to increase the loading measuring ability that is used for test stand, can realize higher speed governing and speedup requirement, can adapt to big industrial field operating mode needs better by two Control Shafts.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail.
Following examples are indefiniteness embodiment of the present invention.
Embodiment 1: as shown in Figure 1, planet speed regulator comprises support 4, and the main power circuit driving mechanism and the secondary power circuit driving mechanism that are connected by tie-plate 6 are arranged in the support 4.
In the present embodiment, main power circuit driving mechanism adopts single secondary two-row planetary gear driving mechanism, and secondary power circuit driving mechanism adopts single planetary gear reducing mechanism, thereby constitutes two dish combined type planetary gear mechanisms, and transmission adopts bevel gear pair.
By form slow-speed of revolution output arrangements for speed regulation jointly by single secondary two-row planetary gear driving mechanism, bevel gear pair-single planetary gear reducing mechanism.
Single secondary two-row planetary gear driving mechanism comprises: the internal gear 26 that connects with main power shaft 19, first internal gear 5 that is connected with tie-plate 6, first sun gear 27 with internal gear 26 engagements, simultaneously with the first identical planetary pinion 3 of 2N technical parameter of first sun gear 27 and 5 engagements of first internal gear, N root planet axis 7, the first left supporting disk 2 and the first right supporting disk 8,2N planetary pinion 3 and N root planet axis 7 are respectively charged in the endoporus of the first left supporting disk 2 and the first right supporting disk 8, and by locking device with N root planet axis 7, the first left supporting disk 2, the first right supporting disk 8 fastening (not shown)s are just formed single secondary two-row planetary gear driving mechanism together.
Deceleration output shaft 1 is inserted in by bearing in the endoporus of support 4, and the first right supporting disk 8 is inserted in the endoporus of tie-plate 6 by bearing.And tie-plate 6 by bearings in support 4 endoporus.
In bevel gear pair-single planetary gear reducing mechanism, bevel gear pair comprises bevel pinion 14, the bevel gear wheel 17 that connects with Control Shaft 15.
Single planetary gear reducing mechanism comprises: by bearings in the endoporus of the middle part of support 4 and the second left supporting disk 10 that connects with tie-plate 6, by the second right supporting disk 22 of bearings in support 4 right side endoporus, be fixed on secondary annulus 12 on the support 4, with second sun gear 23 of hollow sleeve 20 engagements that are socketed in bevel gear wheel 17, respectively with the N of second sun gear 23 and secondary annulus 12 engagements
1Individual second planetary pinion 11, N
1 Root planet axis 13, N
1 Root planet axis 13 is formed whole planet carrier with second left supporting disk 10, the second right supporting disk 22 fastening connections.
Overlap external tooth and 23 engagements of second sun gear on the hollow sleeve 20 of following bevel gear wheel 17, bevel pinion 14 and bevel gear wheel 17 engagements, and be bearing in by bearing in the endoporus of bearing support 16,16 of bearing supports are fixed in the endoporus of support 4, main power shaft 19 passes from the endoporus of hollow sleeve 20, be processed with external tooth on the inner cylindrical of main power shaft 19, the rear end internal tooth of external tooth and internal gear 26 (promptly connecting internal tooth 24) engagement.
Planet speed regulator drives with two motors (or other power plant) in the present embodiment, a called after M
KThe control motor, its rated power is P
K(secondary power), rated speed are n
K, M
KBy coupling and Control Shaft 15 direct connections, the break (not shown) is installed at coupling cylindrical place; Another motor called after master power motor M, its rated power are that P (main power), rated speed are n, and M controls motor rated power P by coupling and main power shaft 19 direct connection (not shown)s
KBe generally 0.05~0.12 times of main motor current P, decide on working condition requirement.
The transmission principle of planet speed regulator is: when the main power shaft 19 of braking, and the control motor M
KDrive Control Shaft 15 rotations, bevel pinion 14 on the Control Shaft 15 drives bevel gear wheel 17 and rotates, because bevel gear wheel 17 and 20 fastening connections of hollow sleeve, so bevel gear wheel 17 drives second sun gear, 23 rotations on hollow sleeve 20 cylindricals, N second planetary pinion 11 made rotation and revolution motion under the acting in conjunction of second sun gear 23 that rotates and fixed secondary annulus 12, thereby promote by the second left supporting disk 10, the whole planet carrier rotation of second right supporting disk 22 combinations, and by tie-plate 6 drives first internal gear 5, because first sun gear 27 maintains static, first internal gear 5 drives first planetary pinion 3 and makes revolution and spinning motion around first sun gear 27, and drive the first left supporting disk 2 and the motion after doing to slow down of the deceleration output shaft 1 that is attached thereto by planet axis 7, thereby will move output, by after three grades of decelerations, planet speed regulator obtains a control rotation speed n like this
dWhen braking Control Shaft 15, main power motor drive main power shaft 19 rotations, main power shaft 19 drives 27 rotations of first sun gear by internal gear 26, because this moment, first internal gear 5 maintained static, so first sun gear 27 drives first planetary pinion 3 and makes revolution and spinning motion around first internal gear 5, motion after the deceleration output shaft 1 that in like manner drives the first left supporting disk 2 by planet axis 7 and be attached thereto is done to slow down, thereby will move output, at this moment, obtain a working speed n by one-level deceleration back deceleration output shaft 1
HDrive main power shaft 19 rotations when starting main power motor, restart the control motor M
KDrive Control Shaft 15 rotations, when first internal gear 5 and first sun gear 27 are rotated in the same way, the high workload rotation speed n of one of deceleration output shaft 1 acquisition
g, obtain an optimum start-up rotation speed n during counterrotating
f, more than the relation of each technical parameter be:
n
g=n
H+n
d,n
f=n
H-n
d,n
H=(n
g+n
f)/2,n
d=n
g-n
H,
n
d=n
K/i
K,n
H=n/i
Wherein, i
KThe resultant gear ratio of planet speed regulator when braking main power shaft 19, the resultant gear ratio of i planet speed regulator during for braking Control Shaft 15; If output speed is n
dThe time the output torque be T
d, output speed is n
HThe time the output torque be T
H, then should satisfy T
d=T
HThe requirement of torque balance, and with this as definite P
KAnd the foundation of numerical relation between the P.
The working procedure of planet speed regulator of the present invention is as follows: start M
KAfter, then start the M motor and make it the opposite direction rotation, use the optimum start-up rotation speed n
fTo start main frame; And then motor is controlled in braking, main power motor continues rotation, makes the retarder output speed from n
fRise to n
HRestart the control motor and make it to rotate in the same way, make the reducer output shaft rotating speed from n with main power motor
HRise to high workload rotation speed n
gStepless speed regulation if desired then adopts variable frequency regulating speed control motor (or other stepless speed regulation) to make rotating speed from n by said procedure operation control motor
fStepless raising speed is to n
H, again from n
HStepless raising speed is to n
g, or inverse process, because the control motor M
KPower P
KMuch smaller than main motor current P, therefore there are level or stepless speed regulation to reach the purpose that powerful device has level or stepless speed regulation, or adopt other control program by the main frame operating mode by the smaller power motor.
The present embodiment characteristics are: speed regulator can adopt the efficient main motor of high rotating speed to substitute the high consumptive material slowspeed machine of poor efficiency with heave-load device speed governing operations such as realization slow-speed of revolution water pumps, can obtain saving metal material and energy dual economy benefit.Output terminal can be connected various reduction gearing mechanisms to be combined into the speed regulator of different purposes.
Embodiment 2: as shown in Figure 2, present embodiment is compared with embodiment 1, secondary power circuit driving mechanism is identical, has increased by a secondary planetary gear mechanism in the main power circuit driving mechanism, comprises the two-row planetary gear driving mechanism that two auxiliary structures are inequality in the promptly main power circuit driving mechanism.Like this, present embodiment mainly is made of three dish combined type arrangements for speed regulation of high rotating speed output (output speed also can be lower than can be higher than main motor speed) jointly two secondary two-row planetary gear driving mechanisms, bevel gear pair-single planetary gear reducing mechanism.
In main power circuit driving mechanism, two secondary two-row planetary gear driving mechanisms include a secondary two-row planetary gear driving mechanism of having narrated among the embodiment 1, promptly be connected in rotating first internal gear 5 on the tie-plate 6, first planetary pinion 3 that a 2N technical parameter is identical, the secondary two-row planetary gear pair that is used to slow down (annotate: when main motor turned round simultaneously with the regulation and control motor, this gear pair played speed governing and decelerating effect) that first sun gear 27 is formed; The unsteady internal gear 37 that the two-row planetary gear driving mechanism that another pair is used for speedup comprises the internal gear 38 that is fixed on the support 4, connect with internal gear 38, be connected in sun gear 31 on the deceleration output shaft 1, simultaneously with the identical two-row planetary gear 36 of N technical parameter of the sun gear 31 and internal gear 37 engagements of floating.The secondary shared N root planet axis 18 of this two secondary two-row planetary gear, and by N root planet axis 18 with the 3rd left supporting disk 34, middle supporting disk 29, the first right supporting disk 8 be tightened to three the dish assembly planetary carriers, the left end of three dish assembly planetary carriers is bearing in the endoporus of support 4, and the other end is bearing in the endoporus of tie-plate 6.Speedup output shaft 33 in the endoporus of middle supporting disk 29 and the 3rd left supporting disk 34, and heads on first sun gear 27 by steel ball 30 by bearings, and sun gear 31 is installed on the external gear of speedup output shaft 33, and first sun gear 27 is meshed with internal gear 26.
In the main power circuit driving mechanism of forming by two secondary two-row planetary gear driving mechanisms, in two two-row planetary gear pairs the technical parameter of first planetary pinion 3 that includes and two-row planetary gear 36 be different.
In the present embodiment, in the secondary power circuit driving mechanism, the structure of bevel gear pair-single planetary gear reducing mechanism has obtained narration in embodiment 1.
The transmission principle of present embodiment has obtained narration in the foregoing description 1, the main difference part is: as described in Figure 2 in the three dish combined type planetary gear mechanisms, comprise two secondary two-row planetary gear pairs, one secondary rising slowed down, the speed governing effect, one pair plays the speedup effect, after three dish assembly planetary carriers obtain four specific rotation speeds, because first planetary pinion 3 and two-row planetary gear 36 all are contained on the planet axis 7 rotationally, so three dish assembly planetary carriers force two-row planetary gear 36 to make revolution and spinning motion around the internal gear 37 that floats by planet axis 7, establishing internal gear 37 numbers of teeth of floating is Z
B1, the number of teeth of sun gear 31 is Z
A1, planet carrier rotating speed speedup (Z then
A1+ Z
B1)/Z
A1Doubly, drive the output of will move of sun gear 31 and speedup output shaft 33 through planetary pinion, so that the present invention reaches the purpose that high speed is exported.
The present invention can satisfy the requirement of high rotating speeds of machinery such as big-and-middle-sized power Fan, water pump and speed governing operation.
Embodiment 3: as shown in Figure 3, in the present embodiment, the structure of main power circuit driving mechanism is identical with embodiment 1, and secondary power circuit driving mechanism then adopts bevel gear pair-star wheels transport mechanism.Promptly mainly two coil the combined type arrangements for speed regulation by what single secondary two-row planetary gear driving mechanism, bevel gear pair-star wheels transport mechanism were formed.
Single secondary two-row planetary gear driving mechanism has obtained narration in embodiment 1.
In bevel gear pair-star wheels transport mechanism, bevel gear pair comprises bevel pinion 14, the bevel gear wheel 17 that connects with Control Shaft 15.
Star wheels transport mechanism comprises: be sleeved on the hollow sleeve 20 that has double-crank eccentric bushing 45 on the bevel gear wheel 17, be fixed on the 3rd internal gear 41 on the support 4, two identical and staggered 180 ° of whiles of technical parameter and the third line star gear 40 of fixing the 3rd internal gear 41 engagements, the 4th left supporting disk the 39, the 4th right supporting disk 43 that connects with tie-plate 6, be distributed with N on the circumference of the distribution circle Dz of the third line star gear 40
2Individual rolling star-wheel, the rolling star-wheel is made up of double-crank with 180 ° of layouts of symmetry and the spider gear shaft 42 that twin shaft is stretched, the double-crank of rolling star-wheel is contained in the bearing hole of the third line star gear 40 by bearing housing, its twin shaft is stretched by bearing housing and is contained in the bearing hole of the 4th left supporting disk 39 and the 4th right supporting disk 43, on the distribution circle Dx of the third line star gear 40 circumference N is arranged
2Individual perforation dx has N
2It is whole planet carrier with rolling star-wheel interlaced arrangement and with the 4th left supporting disk 39 and the 4th right 43 fastening connections of supporting disk that root supporting axle 44 passes perforation dx, two the third line star gears 40 are installed in rotation on the double-crank of eccentric bushing 45, the throw of eccentric of eccentric bushing 45 double-cranks is identical with the throw of eccentric of the double-crank of spider gear shaft 42, and the two ends cylinder of hollow sleeve 20 is bearing in the endoporus of the 4th left supporting disk 39 and the 4th right supporting disk 43 in the whole planet carrier by bearing.
The transmission principle of present embodiment is such:
When the main power shaft 19 of braking, the control motor M
KDrive Control Shaft 15 rotations, bevel pinion 14 on the Control Shaft 15 drives bevel gear wheel 17 and rotates, because bevel gear wheel 17 and 20 fastening connections of hollow sleeve, so bevel gear wheel 17 drives eccentric bushing 45 rotations on the hollow sleeve 20, two the third line star gears 40 are at 45 two double-cranks of eccentric bushing and fix under the acting in conjunction of the 3rd internal gear 41 and make revolution and spinning motion, because N
2Bearing on the individual rolling star-wheel crank is set in the N of the third line star gear 40
2In the individual bearing hole, thereby the third line star gear 40 synchronous revolution of promotion rolling star-wheels do and spinning motions, rolling star-wheel bearings at both ends is sleeved in the bearing hole of planet carrier, so promote the planet carrier spinning motion by the rolling star-wheel.And then drive tie-plate 6 by planet carrier and drive first internal gear 5 and rotate at a slow speed, because first sun gear 27 maintains static, first internal gear 5 drives first planetary pinion 3 and makes revolution and spinning motion, and drives automatic motion after the first left supporting disk 2 is done decelerations by bearing, planet axis 7 around first sun gear 27, the first left supporting disk 2 and 1 fastening connection of deceleration output shaft, thereby will move output, by after three grades of decelerations, this planet speed regulator obtains a control rotation speed n like this
dWhen braking Control Shaft 15, main power motor drive main power shaft 19 rotations, can obtain rotation speed n equally
H, n
g, n
f, its process has obtained narration in embodiment 1.
The present invention can satisfy the requirement of speed governing transmission behind the heavy duty equipment low speed starts such as grinding machine.
Embodiment 4: as shown in Figure 4, in the present embodiment, identical among secondary power circuit driving mechanism and the embodiment 3, identical among main power circuit driving mechanism and the embodiment 2, the three dish combined type arrangements for speed regulation that speed regulator of the present invention mainly is made up of two secondary two-row planetary gear driving mechanisms, bevel gear pair-star wheels transport mechanism.
The structure of two secondary two-row planetary gear driving mechanisms has obtained narration in embodiment 2.
The structure of bevel gear pair-star wheels transport mechanism has obtained narration in embodiment 3.
Present embodiment is compared with embodiment 2, and 2 differences are structurally arranged, and causes it to select for use regulation and control motor model different with application area:
1, in the present embodiment, bevel gear pair-star wheels transport mechanism combination is adopted in secondary power circuit transmission, than adopting bevel gear pair-secondary velocity ratio i of planetary gear reducing mechanism combination
KGreatly, conveniently adopt the higher regulation and control motor of rotating speed to obtain less regulation and control rotation speed n
d
2, two of present embodiment secondary two-row planetary gear driving mechanisms, i.e. first planetary pinion 3 and two-row planetary gear 36, if adopt identical technical parameter, speed regulator final ratio i then
H=1, under the situation that Control Shaft 15 is braked, start main motor, then main power shaft 19 is identical with speedup output shaft 33 rotating speeds, its rotating speed equals main motor rated speed, this technical characterstic, make present embodiment can be used for retarder, speed increaser class mechanical transmission folk prescription is to load test, its test method is: make Control Shaft 15 brakings, right-hand member master motor passes through sensor, coupling with by test specimen (as retarder, speed increaser etc.) direct connection, passed through torque sensor by the test specimen high-speed output end, main power shaft 19 direct connections of coupling and planet speed regulator of the present invention, the speedup output shaft 33 of planet speed regulator is by torque sensor coupling and loading motor direct connection (main motor is identical with the loading motor model), start main motor, commentaries on classics is dragged in the equidirectional zero load of main motor and loading motor, restart the regulation and control motor and increase the loading motor rotating speed, make its rotating speed surpass the motor synchronous rotating speed, make loading motor become alternator.Formally enter the load test program.Its load test principle sees for details described in following examples 5.
Therefore, present embodiment also can be used for load test stand, and has the low advantage of experimentation cost except that being applicable to high rotating speed water pump, fan speed regulation operation.
Embodiment 5: as shown in Figure 5, comprise two covers and the identical speed regulating mechanism of arrangements for speed regulation shown in the embodiment 3 in the present embodiment, and 180 ° of settings of this two speed regulating mechanism symmetries, its structure is identical.Be that present embodiment is combined into three dish combined type ternary full floating speed regulators by bevel gear pair-star wheels transport mechanism that two secondary two-row planetary gear driving mechanisms and two overlap 180 ° of layouts of symmetry.
Described bevel gear pair-star wheels transport mechanism has obtained narration in embodiment 3.Two cover two-row planetary gear driving mechanisms include first internal gear 5,2N first planetary pinion 3, first sun gear 27, N root the planet axis 7 and first right supporting disk 8, middle supporting disk 47.Wherein, about two first planetary pinion 3 common N root planet axis 7, two first planetary pinions, 3 backs and the first right supporting disk 8 about promptly planet axis 7 is passed respectively, middle supporting disk 47 are fixing.
The technical parameter of two cover two-row planetary gear driving mechanisms is identical, and left side one pair is used for the speedup transmission, and right side one pair is used for gearing down, makes internal gear number of teeth Z
B, the planetary pinion tooth number Z
C, solar wheeling tooth tooth number Z
A, the left side one secondary speed increasing ratio is i
Z=(Z
A+ Z
B)/Z
A, the right side one secondary reduction speed ratio i
J=(Z
A+ Z
B)/Z
A, two secondary two-row planetary gear driving mechanism resultant gear ratio i then
H=i
J/ i
Z=1, so when motion is imported from right side master's power shaft 19, first sun gear 27 that drives right side one secondary planetary gear mechanism by internal gear 26 carries out gearing down, first sun gear 27 promotes first planetary pinion 3 and makes revolution and spinning motion, because two Control Shafts 15 are all fixed about this moment, two first internal gears 5 all can not rotate about causing, first planetary pinion 3 on right side rotatablely moving after promoting three dish assembly planetary carriers under the acting in conjunction of first sun gear 27 and first internal gear 5 and doing to slow down like this, and force first sun gear 27 in first planetary pinion, the 3 promotion left sides in left side to do the speedup motion, because velocity ratio i
H=1, so, drive the main power shaft 19 in left side and main power shaft 19 rotation in the same way under same rotational speed on right side by internal gear 26.Left end, right-hand member master power shaft 19 rotating speeds are n
H=n (n
HFor motor speed slow down by two secondary compound planetary gearings and the speedup transmission after rotating speed, n be the motor rated speed), owing to i
H=1, so n
H=n.
The test load of various mechanical transmissions such as motor and retarder mainly is the alternator load that is transformed by AC asynchronous motor.What come to this as shown in Figure 5 a kind ofly promptly loads speed regulator for AC asynchronous motor changes into the supporting planet speed regulator of alternator load, be mainly used in the AC asynchronous motor load test stand, the rarest two of the AC motor of participation test, the model of two AC motor is identical, one in loading speed regulator shown in Figure 5 is installed on the test stand, suppose that right-hand member establishes one for dragging AC motor, left end is established one for adding set generator, they all pass through torque sensor, coupling and main power shaft 19 direct connection (not shown)s, at first make Control Shaft 15 be in braking state during test, start dragging motor earlier, make dragging motor and add set generator and dally by rated speed.According to Principle of Electric Engine, as long as make the synchronous speed of the rotating speed of asynchronous motor, just can make asynchronous motor become induction generator greater than Ac that its staor winding adds, it is many more to be higher than synchronous speed, and the AC power that sends is just big more.And loading speed regulator shown in Figure 5 is being because of self possessing the technical requirements that adjusting function just can satisfy generating, and it can make complicated test load process simplify greatly, particularly needn't adopt the large-size variable-frequency technology of complex and expensive.
The loading transmission principle of present embodiment is such:
Before Load test is formally carried out, brake two Control Shafts 15, the AC induction motor on this planet speed regulator left side and right side all with main power shaft 19 direct connections, press the unloaded rotation of motor rated speed, because the technical parameter of two secondary two-row planetary gear driving mechanisms is identical, so, the reduction speed ratio i of right side one secondary planetary mechanism
JSpeed increasing ratio i with the left side one secondary planetary mechanism
ZBe identical, two secondary two-row planetary gear driving mechanism resultant gear ratio i
H=(1 ÷ i
J) * i
Z=1, so after right motor starts, drive main power shaft 19 and all dally this rotation speed n with identical rotating speed with the left end motor
H=motor rated speed n, the left end motor speed is not higher than synchronous speed, can not produce Ac.Control Shaft 15 when the braking left side maintains static first internal gear 5, starts Control Shaft 15 rotations on right side, when the regulation and control motor M
KRotation speed n
K, make first sun gear 27 obtain one and regulate and control rotation speed n after totally three grades of decelerations through bevel gear pair-star wheels transport mechanism and first internal gear 5 and first planetary pinion 3
d, so that the rotating speed of the main power shaft 19 in left side is from n
HRise to (n
H+ n
d) during greater than the synchronous speed of left end motor, the AC induction motor in left side becomes and adds set generator, produces Ac by its staor winding and feeds back to the right-hand member motor to replenish the energy consumption of transmission system, constitutes electric blocking test system like this.Otherwise, the right-hand member motor changed into adding set generator, the left end motor changes dragging motor into, presses the Control Shaft 15 on aforesaid operations process braking right side, starts Control Shaft 15 rotations in left side, can reach same purpose.
The characteristics of present embodiment are:
1, present embodiment mainly is to be used for the AC induction motor Load test, realize loading the stepless speed regulation of generator speed by two Control Shafts 15 that load the speed regulator left and right sides, the regulation and control motor is low pressure low power frequency conversion speed-adjustable motor (or adopting the speed governing of small-sized DC machine), experimentation cost is low, the operation simple and convenient, builds test stand and drops into first and can reduce more than 50%.
2, except that being used for AC induction motor load performance test stand, also can directly be used for realizing the equipment speed governing operation.For example, change the right-hand member motor into dragging motor, left end is added set generator change a water pump into, just realize pump speed control operation etc.
Embodiment 6: as shown in Figure 6, comprise two speed regulators as shown in Example 1 in the present embodiment, these two speed regulators are symmetrical set, about two the cover speed regulators in, except the technical parameter of two first planetary pinions 3 was inequality, other structures were all identical.Be that present embodiment includes the single secondary two-row planetary gear driving mechanism of two covers and two cover bevel gear pair-single planetary gear reducing mechanisms, 180 ° of settings of described two sets of transmission mechanism symmetry.Wherein, about two first planetary pinions 3 N root planet axis 7 altogether, two first planetary pinions 3 backs and right supporting disk 8 about promptly planet axis 7 is passed respectively, middle supporting disk 47 are fixing.
A difference of the planet speed regulator in the present embodiment and embodiment's 5 described loading speed regulators is that bevel gear pair-single planetary gear reducing mechanism has replaced bevel gear pair-star wheels transport mechanism, its objective is and utilize the former characteristic littler several times, so that increase the regulation and control rotation speed n than the latter's velocity ratio
d, enlarge effective speed adjustable range.Another difference be present embodiment except applicable to the equipment speed governing operations such as blower fan, water pump, also can be used as speed increaser and be used for wind-power electricity generation.
The working procedure of planet speed regulator is in the present embodiment: establish the main power shaft 19 and working machine (water pump or blower fan etc.) direct connection in planet speed regulator left side in the present embodiment, right side master's motor and main power shaft 19 direct connections, the regulation and control motor M of two same model
KCoupling by band brake respectively with Control Shaft 15 direct connection (not shown)s.Control Shaft 15 braking in left side starts the Control Shaft 15 on right side, delay time after 3~5 seconds, starts main motor, makes the switched in opposite with Control Shaft 15 of turning to of main motor, like this through behind deceleration, speedup two stage gear ratios, and the main power shaft 19 acquisition rotation speed n in left side
f, then the Control Shaft 15 on right side is braked, and main power shaft 19 rotating speeds in left side are from n
fRise to n
H, restart right-hand member regulation and control motor M
K, make right-hand member Control Shaft 15 change direction rotation (rotating in the same way) with main motor, main power shaft 19 rotating speeds in left side this moment are from n
HContinue to rise to n
g, n
g=n
H+ n
d, this rotation speed n
gOnly obtain by starting right side regulation and control motor speed-regulating, if working machine requires rotating speed to continue to increase, then the left side is regulated and control the direction rotation that motor increases towards main power shaft 19 rotating speeds again, main power shaft 19 rotating speeds that finally make the left side are from n
gContinue to rise to n
g=n
H+ n
d+ n
d=n
H+ 2n
d, so just reached the purpose that the working machine requirement continues to increase rotating speed.
The characteristics of present embodiment: adopt the two-way speed-regulating scheme, can conveniently increase the rotating speed of working machine, make the present invention can satisfy the needs of big industrial field water pump fan condition in a wider context, help wind-electricity integration as the wind power generation speed increasing device.
Embodiment 7: as shown in Figure 7, planet speed regulator comprises support 4, and the main power circuit driving mechanism and the secondary power circuit driving mechanism that are connected by tie-plate 6 are arranged in the support 4.
In the present embodiment, main power circuit driving mechanism adopts single secondary two-row planetary gear driving mechanism, and secondary power circuit driving mechanism adopts cylindrical gear pair-single planetary gear mechanism.
By form two dish combined type slow-speed of revolution output arrangements for speed regulation jointly by single secondary two-row planetary gear driving mechanism, cylindrical gear mechanism.
The secondary two-row planetary gear driving mechanism of described list has obtained narration in embodiment 1.
Described cylindrical gear pair-single planetary gear mechanism, wherein single planetary gear reducing mechanism have obtained narration in embodiment 1.Cylindrical gear pair mechanism comprises: be sleeved on the big column gear 50 on the hollow sleeve 20, be sleeved on the small cylinder gear 48 on the Control Shaft 49.Hollow sleeve 20 is bearing in the endoporus of bearing support 51 by bearing, and Control Shaft 49 is bearing in the two ends endoporus of support 4 by bearing.
Planet speed regulator drives with two motors (or other power plant) in the present embodiment, a called after M
KThe control motor, by coupling and Control Shaft 49 direct connections, the break (not shown) is installed at coupling cylindrical place; Another motor called after master power motor M is by coupling and main power shaft 19 direct connection (not shown)s.
When the control motor M
KWhen driving Control Shaft 49 rotations, small cylinder gear 48 on the Control Shaft 49 drives big column gear 50 and rotates, because big column gear 50 and 20 fastening connections of hollow sleeve, so big column gear 50 drives second sun gear, 23 rotations on hollow sleeve 20 cylindricals, remaining transmission principle has obtained narration in embodiment 1.
The characteristics of present embodiment are: can not adopt according to customer requirements under the situation of embodiment's 1 planet speed regulator, can adopt the parallel axes cylindrical gear mechanism to realize heave-load device speed governing operations such as slow-speed of revolution water pump, can obtain saving metal material and energy dual economy benefit equally.Output terminal 1 can be connected various reduction gearing mechanisms to be combined into the speed regulator of different purposes.
Embodiment 8: as shown in Figure 8, the cylindrical gear mechanism of present embodiment is than having increased by a pair among the embodiment 7, promptly taked the same cylindrical gear pair of two covers of symmetric arrangement, synthetic with the power of realizing two regulation and control motors, big column gear 52 has the external tooth engagement of internal tooth and hollow sleeve 53 to connect, realize the unsteady running of big column gear 52, remaining is basic identical with embodiment's 7 described structures and transmission principle.
The present embodiment characteristics are: except having embodiment's 7 described characteristics, also take supporting two the regulation and control motors of power synthesis mode, can spatially not interfere with main motor, strengthened the reliability of transmission again, improve the transmission life-span, adapt to the various working needs of powerful device speed governing operation neatly.
Embodiment 9: as shown in Figure 9, planet speed regulator comprises support 4, and the main power circuit driving mechanism and the secondary power circuit driving mechanism that are connected by tie-plate 6 are arranged in the support 4.
In the present embodiment, the structure of main power circuit driving mechanism is identical with embodiment 1, and secondary power circuit driving mechanism then adopts cylindrical gear pair-star wheels transport mechanism.Promptly mainly two coil the combined type arrangements for speed regulation by what single secondary two-row planetary gear driving mechanism, cylindrical gear pair-star wheels transport mechanism were formed.
Single secondary two-row planetary gear driving mechanism has obtained narration in embodiment 1.
Described cylindrical gear pair-star wheels transport mechanism, cylindrical gear pair have wherein obtained narration in embodiment 7; Star wheels transport mechanism has wherein obtained narration in embodiment 3.
The present invention can satisfy the requirement of speed governing transmission behind the heavy duty equipment low speed starts such as grinding machine equally.
The present embodiment characteristics are: speed regulator can adopt the parallel axes cylindrical gear mechanism to realize heave-load device speed governing operations such as slow-speed of revolution water pump under the situation that can not adopt embodiment's 3 described planet speed regulators, can obtain saving metal material and energy dual economy benefit equally.Output terminal 1 can be connected various reduction gearing mechanisms to be combined into the speed regulator of different purposes.
Embodiment 10: as shown in figure 10, the structure of the cylindrical gear mechanism of present embodiment is described identical with embodiment 8, and remaining structure has obtained narration in embodiment 9.
The present embodiment characteristics are: except having embodiment's 9 described characteristics, take the power synthesis mode can supporting two regulation and control motors, can spatially not interfere with main motor, strengthened the reliability of transmission again, improve the transmission life-span, adapt to the various working needs of powerful device speed governing operation neatly.
Embodiment 11: as shown in figure 11, planet speed regulator comprises support 4, and the main power circuit driving mechanism and the secondary power circuit driving mechanism that are connected by tie-plate 6 are arranged in the support 4.
In the present embodiment, the structure of main power circuit driving mechanism is identical with embodiment 1, and secondary power circuit driving mechanism then adopts link chain mechanism-star wheels transport mechanism.Promptly mainly form two dish combined type arrangements for speed regulation by single secondary two-row planetary gear driving mechanism, link chain mechanism-star wheels transport mechanism.
Single secondary two-row planetary gear driving mechanism has obtained narration in embodiment 1.
Described link chain mechanism-star wheels transport mechanism, star wheels transport mechanism has wherein obtained narration in embodiment 3.Link chain mechanism wherein comprises: be sleeved on sprocket wheel 54 on the hollow sleeve 20, be sleeved on sprocket wheel 55 on the Control Shaft 49, be sleeved on the chain 56 on sprocket wheel 54 and the sprocket wheel 55.
When the control motor M
KWhen driving Control Shaft 49 rotations, sprocket wheel 55 on the Control Shaft 49 drives chain 56, rotate until driving sprocket wheel 54, because sprocket wheel 54 and 20 fastening connections of hollow sleeve, so sprocket wheel 54 drives second sun gear, 23 rotations on hollow sleeve 20 cylindricals, remaining transmission principle has obtained narration in embodiment 3.
The present invention can satisfy the requirement of speed governing transmission behind the heavy duty equipment low speed starts such as grinding machine equally.
The present embodiment characteristics are: speed regulator is separated by when far away at needs regulation and control motor and main motor, can adopt link chain mechanism-star wheels transport mechanism at secondary power circuit driving mechanism, realize heave-load device speed governing operations such as slow-speed of revolution water pump, can obtain saving metal material and energy dual economy benefit equally.Output terminal 1 can be connected various reduction gearing mechanisms to be combined into the speed regulator of different purposes.
Embodiment 12: as shown in figure 12, link chain mechanism in the present embodiment is than having increased the identical link chain mechanism of a cover among the embodiment 11, two cover link chain mechanisms have been taked the mode of symmetric arrangement, promptly increase same chain 56, the sprocket wheel 55 of a cover, the handing-over but chain 56 up and down interlaces, synthetic with the power of realizing two regulation and control motors, remaining is basic identical with embodiment's 3 described structures and transmission principle.
The present embodiment characteristics are: except having embodiment's 11 described characteristics, take the power synthesis mode can supporting two regulation and control motors, can spatially not interfere with main motor, strengthened the reliability of transmission again, improve the transmission life-span, adapt to the various working needs of powerful device speed governing operation neatly.
Embodiment 13: as shown in figure 13, the bevel gear pair mechanism of present embodiment 13 has taked symmetric arrangement, increases the same bevel gear pair of a cover, also is to realize that the power of two regulation and control motors is synthetic, and remaining is basic identical with embodiment's 1 described structure and transmission principle.
The present embodiment characteristics are: except having embodiment's 1 described characteristics, take the power synthesis mode can supporting two regulation and control motors, strengthen the reliability of transmission, prolong the transmission life-span, adapt to the requirement of speed governing transmission behind the heavy duty equipment low speed start such as grinding machine neatly.
Embodiment 14: as shown in figure 14, the bevel gear pair mechanism of present embodiment 14 has taked symmetric arrangement, increases the same bevel gear pair of a cover, also is to realize that the power of two regulation and control motors is synthetic, and remaining is basic identical with embodiment's 3 described structures and transmission principle.
The present embodiment characteristics are: except having embodiment's 3 described characteristics, take the power synthesis mode can supporting two regulation and control motors, strengthen the reliability of transmission, prolong the transmission life-span, adapt to the requirement of speed governing transmission behind the heavy duty equipment low speed start such as water pump neatly.