CN201947209U - Automatic stepless speed change torque-increase motor starter based on coaxial wrapping tape transmission - Google Patents
Automatic stepless speed change torque-increase motor starter based on coaxial wrapping tape transmission Download PDFInfo
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- CN201947209U CN201947209U CN2010206648458U CN201020664845U CN201947209U CN 201947209 U CN201947209 U CN 201947209U CN 2010206648458 U CN2010206648458 U CN 2010206648458U CN 201020664845 U CN201020664845 U CN 201020664845U CN 201947209 U CN201947209 U CN 201947209U
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Abstract
The utility model provides an automatic stepless speed change torque-increase motor starter based on the coaxial wrapping tape transmission, which is mounted between a motor and a load. In the utility model, a plurality of key grooves and rotatable planet carriers are uniformly distributed in the inner chamber of a starting housing, a plurality of radial straight grooves and a plurality of double winding belt wheels (3)staggered with the radial straight grooves and uniformly distributed in the circumferential direction are formed in the planet carriers, and a set of sliding key clutch mechanism is respectively mounted in each radial straight groove; input winding belt wheels (6)and output winding belt wheels (18) are respectively mounted in middle holes at the left and right ends of the planet carriers in a running fit manner; and winding belt resetting torsion spring mechanisms are mounted at both the outer ends of the planet carriers and the shaft ends of the output winding belt wheels(18).When the starter is started, the transmission ratio between a traditional motor and the load gradually changes to 1:1 from a vary large value in a stepless manner; and when closed, the starter automatically resets to the initial large transmission ratio state through the elasticity discharged by tightened torsion springs in the starting process. The motor starter enlarges the starting torque of the motor by many times and reduces the starting current.
Description
Technical field
The utility model relates to a kind of automatic gear shift transmission device that is installed between motor and the load.Belong to the mechanical industry technical field.
Background technology
At present under many occasions, motor drags work mechanism, reach and overcome the desired starting torque of static inertia load when starting, its power requirement to motor is often a lot of greatly than the power that drags work mechanism normal operation requirement after starting, will being twice of having is above, causes low load with strong power like this; And the big starting torque of motor brings big current fluctuation, and when having several motors to start simultaneously, this impact can cause the contactor tripping operation, breaks in production, even cause damage and accident.
In July, 2010, disclosed application number was 201010034304.1 Chinese invention patent: the electromagnetic clutch type torsion-increasing start coaxial and automatic speed changing machine be to increase a reductor between former motor and former load, but its weak point is:
1, reductor has only a fixed speed ratio, that is to say that this speed change startup just makes original one-shot become restarting, and required each time tripping force reduces to some extent, but still does not solve root problem;
2, this invention provides the restarting signal and adopts artificial starting switch or setting-up time switching circuit behind above-mentioned one-shot, promptly is not " automatic speed variator " that provides the restarting signal automatically;
3, whole variable-speed motor complex structure is bulky, and cost is too high.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of starting torque of motor that can make to be multiplied, and uses the coaxial take-up strap transmission automatic stepless speed change reliable, simple in structure, that cost is low to increase the torque motor starter.
The purpose of this utility model is achieved in that a kind of coaxial take-up strap transmission automatic stepless speed change increases the torque motor starter, comprises that belt wheel is twined in shell, planet carrier, input, belt wheel, take-up strap reduction torsion spring mechanism, a plurality of duplex winding belt wheel, many input take-up straps, many output take-up straps and a plurality of feather key clutch are twined in output;
Described shell comprises shell block and flange end cap, and shell block is connected with the flange end cap, and the shell block inner chamber has a plurality of uniform keyways;
Described planet carrier comprises planet stand and carrier flange, carrier flange and planet stand are connected, planet carrier is rotatable in the enclosure by roller bearings, a plurality of circumferentially uniform radially straight troughs are arranged in planet carrier inside, stagger with a plurality of radially straight troughs and a plurality of duplexs to be housed to twine belt wheels along circumferentially uniform, being rotatably assorted in the central through hole left end hole of planet carrier is equipped with input winding belt wheel, and rotatable cooperation is equipped with output and twines belt wheel in the right-hand member hole;
One termination of many input take-up straps is connected in input respectively by branches such as angles of circumference and twines in the deep trouth of belt wheel, and another termination is connected in a plurality of duplexs respectively and twines in the big winding wheel deep trouth of belt wheel; One termination of many output take-up straps is separately fixed at output by the angle of circumference five equilibrium and twines in the deep trouth of belt wheel, and another termination is separately fixed at duplex and twines in the little winding belt wheel deep trouth of belt wheel;
Described take-up strap reduction torsion spring mechanism is contained between planet carrier output axle head and the output take-up strap axle end, or is installed in the planet carrier position intermediate;
Described a plurality of feather key clutch is arranged at respectively in the inner outer a plurality of circumferentially uniform radially straight troughs that enclose of planet carrier.
The coaxial take-up strap transmission of the utility model automatic stepless speed change increases the torque motor starter, described feather key clutch comprises feather key, disengagement pusher dog, pusher dog briquetting, feather key roller, briquetting roller, feather key stage clip, stage clip swivel base, stage clip bearing pin and three pivot pins and the middle pin rod of feather key, and described feather key and pusher dog briquetting overlay in the inner outer a plurality of circumferentially uniform radially straight troughs that enclose of described planet carrier in pairs; Throwing off pusher dog and bearing pin is clipped between feather key and the pusher dog briquetting; Pivot pin crosses the wallboard of above-mentioned radially straight trough both sides and fixes, and pivot pin also passes across the hole of throwing off the pusher dog center; Pin rod is fixed in the waist circular port that crosses in feather key middle part in the middle of the feather key; One end of described stage clip bearing pin inserts in the middle cross through hole of stage clip swivel base, and the other end is bearing on the middle pin rod of feather key rotationally; The stage clip swivel base is inserted in the hole on the chute both sides wallboard of feather key, and the feather key compression spring sleeve is contained on the stage clip bearing pin;
Described feather key roller and briquetting roller are installed in feather key and the close center of pusher dog briquetting one end by pivot pin.
The coaxial take-up strap transmission of the utility model automatic stepless speed change increases the torque motor starter, described take-up strap reduction torsion spring mechanism comprises torsion spring seat, torsion spring lid and two torsion springs, the torsion spring seat is connected in the outer end of carrier flange, the outmost turns end of two torsion springs colludes and fastens on the maximum urceolus of torsion spring seat, and the inner ring end of two torsion springs colludes and fastens the position of twining the close axle head of belt wheel in output.
Coaxial take-up strap drive stepless speed changing described in the utility model increases the torque motor starter, it is a kind of automatic stepless speed-changing device, cardinal principle is that the high-tensile strength that utilizes take-up strap (adopting the material of similar synchronous band or other high duty metal silks or nylon, fiber material to make) to bear comes transfer torque, and utilize the flexibility and the thickness of take-up strap, in transfer torque, change the diameter of driven wheel, realize that the stepless continuous of gearratio changes; The utility model utilizes the variation of driving and driven pulley diameters to promote feather key again and does radially clutch campaign, gearratio is stepless when changing to (1:1) when input in the start-up course and output, speed-change process finishes automatically, and motor (input) and load (output) reach synchronous operated normal operating conditions.
The beneficial effects of the utility model are:
The utility model is connected between the motor and load of original system coaxially, and when starting beginning, it makes a big gearratio between original motor and the load, and then infinitely is changed to 1:1 gradually; During shutdown, the torsion spring that the utilization of this starter is tightened up in start-up course discharges elastic force makes starter automatically reset to initial big speed ratio state.Starter of the present utility model is a Purely mechanical, use reliable, simple in structure, cost is low, it can make the starting torque of motor be multiplied, greatly reduce requirement to electric motor starting power, reduced the starting current of motor greatly, can fundamentally change always the low load with strong power phenomenon that exists, all produce significant effect at aspects such as energy-conservation, material-saving and safer productions.
Description of drawings
Fig. 1 is the front view of starter of the present utility model inactive state (not starting as yet).
Fig. 2 is that starter of the present utility model is at the front view that starts completion status.
Fig. 3 is the A-A cutaway view of Fig. 1.
Fig. 4 is the B-B cutaway view of Fig. 1.
Fig. 5 is the C-C cutaway view of Fig. 1.
Fig. 6 is the D-D cutaway view of Fig. 2.
Fig. 7 is the E-E cutaway view of Fig. 2.
Fig. 8 is the F-F cutaway view of Fig. 2.
Mark in the accompanying drawing:
Embodiment
Coaxial take-up strap transmission automatic stepless speed change of the present utility model increases the torque motor starter and is connected between motor and the load, it twines belt wheel 3, input by shell, planet carrier, three duplexs and twines that belt wheel 6, output twine 18, three inputs of belt wheel take-up strap 5, three output take-up straps 4, take-up strap reduction torsion spring mechanism and three feather key clutches are formed.
Described shell is made up of shell block 1 and flange end cap 13, as Fig. 1 Fig. 2.Shell block 1 left side can be connected (motor and screw do not draw) by seam with motor housing with screw, the right side is connected (screw do not draw) with screw with flange end cap 13 by seam, is processed with 12 uniform keyways (seeing Fig. 4 Fig. 7) on shell block 1 inner cylinder face.
Described planet carrier is made up of planet stand 2 and carrier flange 14, carrier flange 14 is not by seam and screw and planet stand 2 be connected (seam, screw draw), planet carrier is rotatable in the enclosure by roller bearings, three circumferential uniform radially straight troughs are arranged in planet carrier inside, stagger with three straight troughs that 60 ° of edges are circumferentially uniform is equipped with the compound planet gear that three duplexs are twined belt wheel 3(likeness in form NW planetary mechanisms) (see Fig. 1 ~ Fig. 6).Being rotatably assorted in the core left end hole of planet carrier is equipped with input winding belt wheel 6, and the endoporus that belt wheel 6 is twined in input is connected with the motor shaft extension, turns in the right-hand member hole to cooperate to be equipped with to export to twine belt wheel 18, and output winding belt wheel 18 endoporus are connected with load; The central through hole that belt wheel 6 is twined in input and motor shaft extension are interference fits and circumferentially locate (motor shaft extension peace key does not draw) with flat key that the central through hole of belt wheel 18 is twined in output and the load shaft extension is similarly interference fits and make hole and shaft extension circumferentially locate (the peaceful key of load shaft extension does not draw) with flat key.
As Fig. 3, Fig. 6, a termination of three input take-up straps 5 is connected in input by rivet 26 by the hexagonal angle five equilibrium respectively and twines in the deep trouth of belt wheel 6, and another termination is connected in three duplexs respectively and twines in the big winding wheel deep trouth of belt wheel 3.As Fig. 4, Fig. 7, a termination of three output take-up straps 4 is fixed on output by rivet 27 by the hexagonal angle five equilibrium respectively and twines in the deep trouth of belt wheel 18, and another termination is separately fixed at duplex by screw 25 and twines in the little winding belt wheel deep trouth of belt wheel 3.
Described take-up strap reduction torsion spring mechanism is made up of torsion spring seat 16,15 and two torsion springs 17 of torsion spring lid.Torsion spring seat 16 is connected in the outer end of carrier flange 14, and the outmost turns end of two torsion springs 17 colludes and fastens on the maximum urceolus of torsion spring seat 16, the inner ring end of two torsion springs 17 collude fasten output twine the close axle head of belt wheel 18 the position (Fig. 5, Fig. 8).
Described three feather key clutches are installed in inner outer the enclosing in three circumferential uniform radially straight troughs of planet carrier respectively, it forms (Fig. 1 by pin rod 20 in the middle of feather key 21, disengagement pusher dog 11, pusher dog briquetting 10, feather key roller 7, briquetting roller 8, feather key stage clip 23, stage clip swivel base 22, stage clip bearing pin 24 and 9,12,19 and feather keys of three pivot pins, Fig. 4, or Fig. 2, Fig. 7).
Described feather key 21 and pusher dog briquetting 10 overlay in the circumferential uniform radially straight trough of inner outer three of enclosing of described planet carrier in pairs, can do the radial alignment motion; Throwing off pusher dog 11 and bearing pin 12 is clipped between feather key 21 and the pusher dog briquetting 10; Pivot pin 12 crosses the wallboard of above-mentioned radially straight trough both sides and fixes, and pivot pin 12 also passes across the hole of throwing off pusher dog 11 centers, and throwing off pusher dog 11 can serve as that axle rotates with bearing pin 12; Pin rod 20 is fixed in the waist circular port that crosses in feather key 21 middle parts in the middle of the feather key.When feather key 21 is protruding, throws off pusher dog 11 and clockwise rotate a pusher dog briquetting 10 and inwardly dial (Fig. 1); When pusher dog briquetting 10 was transfused to take-up strap 5 to extrapolation, pusher dog briquetting 10 promoted to throw off pusher dog 11 inhour rotations feather key 21 is inwardly pulled out (to the planet carrier center position) (Fig. 2).
In the cross through hole in the middle of the one end insertion stage clip swivel base 22 of described stage clip bearing pin 24, bearing shell of other end likeness in form is rotatably supported on the middle pin rod 20 of feather key; Stage clip swivel base 22 is inserted in the hole on the chute both sides wallboard of feather key 21 (hole for axially, there is opening the centre) stage clip swivel base 22 and can rotates in the hole; Feather key stage clip 23 is sleeved on the stage clip bearing pin 24, and pressure one end of feather key stage clip 23 acts on the middle pin rod 20 of feather key, and the other end acts on the stage clip swivel base 22, acts on the planet carrier by stage clip swivel base 22 again; In Fig. 4 position, two feather key stage clips 23 act on the making a concerted effort radially outward of pressure of pin rod 20 in the middle of the feather key; In Fig. 7 position, two feather key stage clips 23 act on pin rod 20 in the middle of the feather key pressure make a concerted effort radially inside.
Described feather key roller 7, briquetting roller 8 are installed in feather key 21 and pusher dog briquetting 10 upper ends (near center one end) (Fig. 1 Fig. 2) by pivot pin 19 and pivot pin 9 respectively, feather key roller 7, briquetting roller 8 can rotate on pivot pin 19 and pivot pin 9, twine belt wheel 6 and output and twine take-up strap on the belt wheel 18 when promoting pusher dog briquetting 10 or feather key 21, all only contact with feather key roller or briquetting roller.
Starter is when inactive state, reach the radially straight trough of three feather keys 21 in planet carrier in the keyway on shell block 1 inner cylinder face, planet carrier and shell are circumferentially located, and in whole starting process, power is the transmission of process secondary dead axle take-up strap from the input to the output like this.
Present embodiment is when starting beginning, and by the deceleration of input, output two-stage, moment of torsion increases exponentially when making the startup beginning.In start-up course, along with the motion of take-up strap, the stepless in the opposite direction continuously variation of the diameter of principal and subordinate wheel, when starting end, it is run-in synchronism that input stage and output stage resultant gear ratio become 1().Import take-up strap 5 and output take-up strap 4(Fig. 6 this moment, Fig. 7) all oneself is wound on the driving wheel of above-mentioned secondary take-up strap transmission (being to be wrapped on the driven pulley before the startup) fully.”
In start-up course, input take-up strap 5 twines belt wheel 3 by duplex gradually and twines winding on the belt wheel 6 to input, along with the thickness stack external diameter change of band is big, take-up strap on the input winding belt wheel 6 is to extrapolation pusher dog briquetting 10(Fig. 2, Fig. 6), it serves as that the axle inhour is rotated with pivot pin 12 that pusher dog briquetting 10 promotes to throw off pusher dog 11 again, makes feather key 21 radially inwardly sliding in the straight trough, leaves the keyway of shell inner cavity; The feather key stage clip 23 that is contained in this moment on the stage clip bearing pin 24 commutates in the acting in conjunction downforce of middle pin rod 20 of feather key and stage clip swivel base 22, the making a concerted effort of stage clip 23 feather key 21 is radially inwardly pressed (do not push down can because centrifugal action and outwards motion), planet carrier keeps the disengaged condition with shell inner cavity, all input and output take-up straps keep tension, whole planet carrier and whole mechanisms wherein all rotate synchronously along with input, output shaft extension, and start-up course finishes.
Planet carrier output axle head of this starter and output are twined between belt wheel 18 axle heads torsion spring mechanism are housed, and two torsion spring 17 outermost end are stuck on torsion spring seat 16 urceolus, and inner terminal is stuck in output and twines on the endoporus end wall of belt wheel 18.In start-up course, because torsion spring seat 16 is connected mutually with planet carrier (planet carrier can not rotate with the circumferential location of shell in start-up course), cause two torsion spring 17 outer ends motionless, and it is inner along with belt wheel 18 rotations are twined in output, two torsion springs 17 be tightened up simultaneously be wrapped in output twine on the end of belt wheel (Fig. 5, Fig. 8).When start finishing, torsion spring mechanism is also along with planet carrier and input, output shaft run-in synchronism, torsion spring 17 maintenance tensions.
When operating mechanism shuts down, powered-down, in the moment of motor outage stall, because the pulling force on input, the output take-up strap disappears simultaneously, torsion spring 17 discharges elastic force immediately makes planet carrier backward rotation (rightabout of rotation direction), output twine belt wheel 18(link to each other with load can not move) on output take-up strap 4 can spur three duplexs conversely and twine belt wheels 3, the output take-up strap 4 that twines on the belt wheel 3 along with three duplexs of rotation of planet carrier can be wound on the output winding belt wheel 18; At the other end then is that three input take-up straps 5 that have been wound on the input winding belt wheel 6 can be wound into respectively on the duplex winding belt wheel 3 (input).At output, work as external diameter after output winding belt wheel 18 is wound and increase to a certain degree, outside radially, promote three feather keys 21; Because stage clip swivel base 22 is inserted in the hole on the chute both sides wallboard of feather key 21 and can only rotates and can not move, an end that is connecting bearing shell of the middle pin rod 20 drive stage clip bearing pins 24 of feather key outwards moves along with feather key 21 is pulled to a certain degree, bearing shell one end of stage clip bearing pin 24 can outwards exceed the other end that inserts stage clip swivel base 22, feather key stage clip 23 meeting pressure commutations this moment, with joint efforts feather key 21 radially outward being pressed of stage clip 23, feather key 21 is outwards stretched out in the keyway that snaps in housing 1 fast, and keep the state outwards pushed down, planet carrier and shell are circumferentially fixed and are stopped operating, and whole starter returns to the initial condition before starting.
This starter take-up strap reduction torsion spring mechanism is contained in planet carrier output axle head and output is twined between belt wheel 18 axle heads, also can be installed in the position at planet carrier middle part, as long as torsion one end of two or three torsion springs is acted on the planet carrier, an end acts on output and twines on the belt wheel just.
The planet carrier inside of adopting in the present embodiment is three radially straight troughs, three duplexs that corresponding is are twined belt wheels 3, three input take-up straps 5, three output take-up straps 4 and three feather key clutches, can make two, four or a plurality of radially straight trough according to different situations planet carrier inside in actual use, corresponding duplex is twined belt wheel 3, input take-up strap 5, output take-up strap 4 and feather key clutch and is two, four or a plurality of.
Claims (4)
1. a coaxial take-up strap transmission automatic stepless speed change increases the torque motor starter, it is characterized in that: described starter comprises that belt wheel (6) is twined in shell, planet carrier, input, belt wheel (18), take-up strap reduction torsion spring mechanism, a plurality of duplex winding belt wheel (3), many input take-up straps (5), many output take-up straps (4) and a plurality of feather key clutch are twined in output;
Described shell comprises shell block (1) and flange end cap (13), and shell block (1) is connected with flange end cap (13), and shell block (1) inner chamber has a plurality of uniform keyways;
Described planet carrier comprises planet stand (2) and carrier flange (14), carrier flange (14) is connected with planet stand (2), planet carrier is rotatable in the enclosure by roller bearings, a plurality of circumferentially uniform radially straight troughs are arranged in planet carrier inside, stagger with a plurality of radially straight troughs and a plurality of duplexs to be housed to twine belt wheels (3) along circumferentially uniform, being rotatably assorted in the central through hole left end hole of planet carrier is equipped with input winding belt wheel (6), and rotatable cooperation is equipped with output and twines belt wheel (18) in the right-hand member hole;
One termination of many input take-up straps (5) is connected in input respectively by branches such as angles of circumference and twines in the deep trouth of belt wheel (6), and another termination is connected in a plurality of duplexs respectively and twines in the big winding wheel deep trouth of belt wheel (3); One termination of many output take-up straps (4) is separately fixed at output by the angle of circumference five equilibrium and twines in the deep trouth of belt wheel (18), and another termination is separately fixed at duplex and twines in the little winding belt wheel deep trouth of belt wheel (3);
Described take-up strap reduction torsion spring mechanism is contained between planet carrier output axle head and output winding belt wheel (18) axle head, or is installed in the planet carrier position intermediate;
Described a plurality of identical feather key clutch is arranged at respectively in the inner outer a plurality of circumferentially uniform radially straight troughs that enclose of planet carrier.
2. a kind of coaxial take-up strap transmission automatic stepless speed change according to claim 1 increases the torque motor starter, it is characterized in that: described feather key clutch comprises feather key (21), throws off pusher dog (11), pusher dog briquetting (10), feather key roller (7), briquetting roller (8), feather key stage clip (23), stage clip swivel base (22), stage clip bearing pin (24) and three pivot pins (9,12,19) and the middle pin rod (20) of feather key, and described feather key (21) and pusher dog briquetting (10) overlay in the inner outer a plurality of circumferentially uniform radially straight troughs that enclose of described planet carrier in pairs; Throwing off pusher dog (11) and bearing pin (12) is clipped between feather key (21) and the pusher dog briquetting (10); Pivot pin (12) crosses the wallboard of above-mentioned radially straight trough both sides and fixes, and pivot pin (12) also passes across the hole of throwing off pusher dog (11) center; Pin rod (20) is fixed in the waist circular port that crosses in feather key (21) middle part in the middle of the feather key; One end of described stage clip bearing pin (24) inserts in the middle cross through hole of stage clip swivel base (22), and the other end is bearing on the middle pin rod of feather key (20) rotationally; Stage clip swivel base (22) is inserted in the hole on the chute both sides wallboard of feather key (21), and feather key stage clip (23) is sleeved on the stage clip bearing pin (24);
Described feather key roller (7) and briquetting roller (8) are installed in feather key (21) and the close center of pusher dog briquetting (10) one end by pivot pin.
3. a kind of coaxial take-up strap transmission automatic stepless speed change according to claim 1 and 2 increases the torque motor starter, it is characterized in that: described take-up strap reduction torsion spring mechanism comprises torsion spring seat (16), torsion spring lid (15) and two torsion springs (17), torsion spring seat (16) is connected in the outer end of carrier flange (14), the outmost turns end of two torsion springs (17) colludes and fastens on the maximum urceolus of torsion spring seat (16), and the inner ring end of two torsion springs (17) colludes and fastens the position of twining the close axle head of belt wheel (18) in output.
4. increase the torque motor starter according to claim 1,2 or 3 described a kind of coaxial take-up strap transmission automatic stepless speed changes, it is characterized in that: described duplex twines in belt wheel (3), input take-up strap (5), output take-up strap (4), feather key clutch and the planet stand 2 radially that the quantity of straight trough is two, four or a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206648458U CN201947209U (en) | 2010-12-17 | 2010-12-17 | Automatic stepless speed change torque-increase motor starter based on coaxial wrapping tape transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206648458U CN201947209U (en) | 2010-12-17 | 2010-12-17 | Automatic stepless speed change torque-increase motor starter based on coaxial wrapping tape transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201947209U true CN201947209U (en) | 2011-08-24 |
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ID=44474545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206648458U Expired - Lifetime CN201947209U (en) | 2010-12-17 | 2010-12-17 | Automatic stepless speed change torque-increase motor starter based on coaxial wrapping tape transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201947209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025298A (en) * | 2010-12-17 | 2011-04-20 | 江阴江顺精密机械零部件有限公司 | Coaxial wound belt driven automatic stepless speed changing torque increasing motor starter |
-
2010
- 2010-12-17 CN CN2010206648458U patent/CN201947209U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025298A (en) * | 2010-12-17 | 2011-04-20 | 江阴江顺精密机械零部件有限公司 | Coaxial wound belt driven automatic stepless speed changing torque increasing motor starter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110824 Effective date of abandoning: 20130227 |
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| RGAV | Abandon patent right to avoid regrant |