CN205630398U - A examine and repair frock that is used for large -scale water distributor straight -cylinder servomotor of hydroelectric set - Google Patents
A examine and repair frock that is used for large -scale water distributor straight -cylinder servomotor of hydroelectric set Download PDFInfo
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- CN205630398U CN205630398U CN201620448264.8U CN201620448264U CN205630398U CN 205630398 U CN205630398 U CN 205630398U CN 201620448264 U CN201620448264 U CN 201620448264U CN 205630398 U CN205630398 U CN 205630398U
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Abstract
The utility model discloses an examine and repair frock that is used for large -scale water distributor straight -cylinder servomotor of hydroelectric set, axial walking track subassembly, orbit altitude adjusting device is installed to the bottom of axial walking track subassembly, the cooperation installation axial of rolling on axial walking track subassembly running gear, install vertical sliding rail set spare on the axial running gear, install longitudinal sliding motion mechanism through sliding fit on vertical sliding rail set spare, the symmetrical arrangement of longitudinal sliding motion mechanism is on vertical sliding rail set spare, install the hydraulic drive device between the two longitudinal sliding motion mechanisms, be provided with locking mechanism in the longitudinal sliding motion mechanism, locking mechanism sets up the both sides face at vertical sliding rail set spare, longitudinal sliding motion mechanism installs bearing roller mechanism, the hydraulic drive device links to each other with hydraulic system. This examines and repair the frock can conveniently carry out altitude mixture control and axial displacement to the servomotor push -and -pull rod, improves and examines and repair and dismouting efficiency, guarantees the security of its process of examining and repairing simultaneously, reduces the work burden of maintainer.
Description
Technical field
This utility model belongs to turbine-generator units large-scale water distributor straight-cylinder servomotor auxiliary repair device field, a kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor.
Background technology
Water-guiding element effect in turbine-generator units is that the current before making entrance runner form rotation; and the incident angle of current can be changed, when generator load changes, hydraulic turbine discharge is adjusted by water-guiding element; and when normal and accidental shutdown, water-guiding element blocks current.
Servomotor is as the core component of gate operating mechanism, and general large-scale water turbine has two or more servomotors becoming even numbers, and its mechanism is essentially identical, has two key components: servomotor cylinder and piston.Servomotor cylinder is formed entirety by cylinder body, front end housing and back cylinder cover, and piston includes piston, conduit and push-pull bar.Each servomotor has two hydraulic fluid ports on cylinder body, communicate with the servomotor cavity of piston both sides respectively, and with pressure oil pipe, corresponding hydraulic fluid port will be coupled together between servomotor, when one of which oil pipe is for pressure oil, during another group oil pipe oil extraction, one group of piston is just for linear motion to a direction, push-pull bar just drives connecting plate to make control ring rotate, controlling annulus and move doubly-linked plate rotation connecting lever, connecting lever drives stator again, thus reaches the purpose of regulating water flow.Otherwise, another group oil pipe is for pressure oil, and piston opposite direction drives control ring to make opposite direction motion, if two groups of oil pipe not oil extractions, then the hydraulic turbine just runs under certain aperture.
Unit long-play, owing to the reasons such as vibration cause speed regulator servomotor each portion fastening position connector to loosen, the generation of the bad phenomenon such as aging of the fatigue rupture of parts and sealing member, all can cause the phenomenons such as servomotor action inaccurate, bite, seepage to occur, affect stable operation of unit.It is accomplished by servomotor push-pull bar is carried out removing maintenance, and servomotor push-pull bar is relatively large in diameter, and weight is all tonne, if using crane to lift, can be limited by hall space condition, and cannot be carried out lifting；If using traditional scaffold to be supported, then cannot carry out the regulation of its height easily, and its centering cannot be ensured, and then bring difficulty to follow-up installation and adjustment；If using artificial support's maintenance, it is understood that there may be support inconvenience, and then cause hidden danger.
Therefore, need exploitation design hydraulic turbine servomotor push-pull bar maintenance tool based on above-mentioned analysis, thus facilitate its upkeep operation.
Utility model content
The purpose of this utility model is to provide a kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor, this maintenance tool can facilitate and servomotor push-pull bar carries out altitude mixture control and moves axially, improve maintenance and dismounting efficiency, ensure the safety of its maintenance process simultaneously, reduce the work load of maintainer.
In order to realize above-mentioned technical characteristic, the technical solution adopted in the utility model is: a kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor, axial traveling rail assembly, the bottom of axial traveling rail assembly is provided with orbit altitude adjusting means, roll on described axial traveling rail assembly to coordinate and axial traveling mechanism is installed, longitudinal slide track component is installed in axial traveling mechanism, by being slidably installed longitudinal sliding motion mechanism on longitudinal slide track component, longitudinal sliding motion mechanism is arranged symmetrically on longitudinal slide track component, between two longitudinal sliding motion mechanisms, fluid pressure drive device is installed, it is provided with retaining mechanism in described longitudinal sliding motion mechanism, retaining mechanism is arranged on the two sides of longitudinal slide track component；Described longitudinal sliding motion mechanism is provided with carrier roller mechanism；Described fluid pressure drive device is connected with hydraulic system.
Described orbit altitude adjusting means includes that lower margin supporting pad, the center weld of lower margin supporting pad have threaded post, and threaded post is provided with adjusting nut, and multiple orbit altitude adjusting meanss are uniformly arranged on the bottom of axial traveling rail assembly for regulating its height.
Described axial traveling rail assembly includes two tracks being arranged in parallel, and track installation is supported in threaded post and by adjusting nut, is installed with many transverse reinforced bars by reinforcing plate between two tracks.
Described axial traveling mechanism includes two longitudinally connected bars, many transverse connecting rods it are installed with between two longitudinally connected bars, the outer face of transverse connecting rod is welded with wheel installing plate by reinforcement, between the end of wheel installing plate and longitudinally connected bar, wheel shaft is installed, wheel, wheel and track are installed on wheel shaft and constitute rolling cooperation.
Described longitudinal slide track component includes that left slide rail and right slide rail, left slide rail and right slide rail are fixedly arranged in the transverse connecting rod of axial traveling mechanism and keep its depth of parallelism；Described longitudinal slide track component has two sets and is respectively and fixedly installed to the two ends of axial traveling mechanism.
Described longitudinal sliding motion mechanism includes slide block, multiple slide blocks are slidably installed respectively on the left slide rail and right slide rail of longitudinal slide track component, end gripper shoe it is installed with between slide block on two slide rails, being installed with two risers in end gripper shoe, the center of gripper shoe is installed with connection seat.
Described carrier roller mechanism includes carrying roller installing plate, and carrying roller installing plate by hinge, is hinged with upper supporting roller by upper pin between trustship installing plate, is hinged with snub pulley by lower bearing pin between two risers of longitudinal sliding motion mechanism.
Described retaining mechanism includes fixing chuck plate, fixing chuck plate be fixedly mounted on longitudinally connected bar medial surface and thereon end face be machined with draw-in groove, one end of threaded rod is hinged on the connection seat of longitudinal sliding motion mechanism by afterbody rotating shaft, and the other end of threaded rod has been threaded connection binding nut.
Described fluid pressure drive device includes hydraulic cylinder, and the left end of hydraulic cylinder is hinged with the end gripper shoe of longitudinal sliding motion mechanism by left axis pin base；The right-hand member of hydraulic cylinder is hinged with another end gripper shoe of longitudinal sliding motion mechanism by right axis pin base.
Described hydraulic system includes Hydraulic Station, and Hydraulic Station is provided with hydraulic pump, and the fixed installation of Hydraulic Station top is with handles, and hydraulic pump is connected with the hydraulic cylinder of fluid pressure drive device by many hydraulic oil pipes, and described hydraulic pump is provided with controller.
This utility model has the advantages that:
1, the height of axial traveling rail assembly can be adjusted by orbit altitude adjusting means, thus ensure the highly consistent of axial traveling rail assembly, thus ensure its planarization, enable axial traveling mechanism to walk the most in orbit.
2, straight track can be provided for axial traveling mechanism by axial traveling rail assembly, and then ensure the convenience that its walking in a horizontal state can be facilitated after whole device unloading to ensure walking, reduce walking resistance, reduce manpower consumption.
3, whole servomotor push-pull bar can be carried out pushing defeated adjustment in horizontal rail by axial traveling mechanism, thus facilitate it to be adjusted.
4, longitudinal sliding motion track can be provided for longitudinal sliding motion mechanism by longitudinal slide track component, thus ensure that it can carry out the adjustment of lengthwise position.
5, carrier roller mechanism can be locked on longitudinal slide track component by retaining mechanism, thus its position is fixed.
6, ensure that carrier roller mechanism in longitudinal slide track component parallel sliding and then ensures its stationarity slided by longitudinal sliding motion mechanism.
7, the servomotor push-pull bar disassembled can be supported by carrier roller mechanism, and then facilitate the adjustment of installation site.
8, power can be provided for carrier roller mechanism by fluid pressure drive device, and then provide longitudinally walking power for it.
9, hydraulic-driven power can be provided for whole fluid pressure drive device by hydraulic system.
Accompanying drawing explanation
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is this utility model front view.
Fig. 2 is this utility model axonometric chart.
Fig. 3 is this utility model right view.
In figure: orbit altitude adjusting means 1, axial traveling rail assembly 2, axial traveling mechanism 3, longitudinal slide track component 4, retaining mechanism 5, longitudinal sliding motion mechanism 6, carrier roller mechanism 7, fluid pressure drive device 8, hydraulic system 9, servomotor push-pull bar 10；
Lower margin supporting pad 101, adjusting nut 102, threaded post 103；
Track 201, reinforcing plate 202, transverse reinforced bar 203；
Wheel 301, wheel installing plate 302, wheel shaft 303, transverse connecting rod 304, longitudinally connected bar 305；
Left slide rail 401, right slide rail 402；
Fixing chuck plate 501, threaded rod 502, binding nut 503, afterbody rotating shaft 504；
Slide block 601, gripper shoe 602, riser 603, connection seat 604；
Upper pin 701, upper supporting roller 702, carrying roller installing plate 703, snub pulley 704, lower bearing pin 705, bearing pin 706；
Left axis pin base 801, hydraulic cylinder 802, right axis pin base 803；
Hydraulic Station 901, handle 902, hydraulic pump 903, controller 904, hydraulic oil pipe 905.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiment of the present utility model is described further.
As Figure 1-3, a kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor, axial traveling rail assembly 2, the bottom of axial traveling rail assembly 2 is provided with orbit altitude adjusting means 1, roll on described axial traveling rail assembly 2 to coordinate and axial traveling mechanism 3 is installed, longitudinal slide track component 4 is installed in axial traveling mechanism 3, by being slidably installed longitudinal sliding motion mechanism 6 on longitudinal slide track component 4, longitudinal sliding motion mechanism 6 is arranged symmetrically on longitudinal slide track component 4, between two longitudinal sliding motion mechanisms 6, fluid pressure drive device 8 is installed, it is provided with retaining mechanism 5 in described longitudinal sliding motion mechanism 6, retaining mechanism 5 is arranged on the two sides of longitudinal slide track component 4；Described longitudinal sliding motion mechanism 6 is provided with carrier roller mechanism 7；Described fluid pressure drive device 8 is connected with hydraulic system 9.The adjustment that servomotor is carried out up, down, left and right and front and back position thereof can be facilitated by above-mentioned frock, and then facilitate its dismounting and maintenance；The own rotation of servomotor can be realized by said structure, it is possible to well ensure the installation of servomotor, location simultaneously.
Further, described orbit altitude adjusting means 1 includes lower margin supporting pad 101, the center weld of lower margin supporting pad 101 has threaded post 103, being provided with adjusting nut 102 in threaded post 103, multiple orbit altitude adjusting meanss 1 are uniformly arranged on the bottom of axial traveling rail assembly 2 for regulating its height.The height of axial traveling rail assembly 2 can be adjusted by orbit altitude adjusting means 1, thus ensure the highly consistent of axial traveling rail assembly 2, thus ensure its planarization, make axial traveling mechanism 3 to walk the most in orbit.When needs carry out altitude mixture control, it is only necessary to rotating adjusting nut 102 just can be with the height of adjustable track.
Further, described axial traveling rail assembly 2 includes two tracks being arranged in parallel 201, track 201 is arranged in threaded post 103 and is supported by adjusting nut 102, is installed with many transverse reinforced bars 203 by reinforcing plate 202 between two tracks 201.Straight track can be provided for axial traveling mechanism 3 by axial traveling rail assembly 2, and then ensure the convenience that its walking in a horizontal state can be facilitated after whole device unloading to ensure walking, reduce walking resistance, reduce manpower consumption.
Further, described axial traveling mechanism 3 includes two longitudinally connected bars 305, it is installed with many transverse connecting rods 304 between two longitudinally connected bars 305, the outer face of transverse connecting rod 304 is welded with wheel installing plate 302 by reinforcement, wheel shaft 303 is installed between the end of wheel installing plate 302 and longitudinally connected bar 305, wheel 301, wheel 301 and track 201 are installed on wheel shaft 303 and constitute rolling cooperation.Whole servomotor push-pull bar 10 can be carried out pushing defeated adjustment in horizontal rail by axial traveling mechanism 3, thus facilitate it to be adjusted.
Further, described longitudinal slide track component 4 includes that left slide rail 401 and right slide rail 402, left slide rail 401 and right slide rail 402 are fixedly arranged in the transverse connecting rod 304 of axial traveling mechanism 3 and keep its depth of parallelism；Described longitudinal slide track component 4 has two sets and is respectively and fixedly installed to the two ends of axial traveling mechanism 3.Servomotor can be made to carry out the adjustment of movement of lengthwise position easily by longitudinal slide track component 4, thus realize the adjustment of its lengthwise position.
Further, described longitudinal sliding motion mechanism 6 includes slide block 601, multiple slide blocks 601 are slidably installed respectively on the left slide rail 401 and right slide rail 402 of longitudinal slide track component 4, it is installed with end gripper shoe 602 between slide block 601 on two slide rails, being installed with two risers 603 in end gripper shoe 602, the center of gripper shoe 602 is installed with connection seat 604.Constituted by slide block 601 and left slide rail 401 and right slide rail 402 and be slidably matched it is achieved thereby that it slides.
Further, described carrier roller mechanism 7 includes carrying roller installing plate 703, carrying roller installing plate 703 is hinged on by bearing pin 706 between two risers 603 of longitudinal sliding motion mechanism 6, is hinged with upper supporting roller 702 by upper pin 701, is hinged with snub pulley 704 by lower bearing pin 705 between trustship installing plate 703.Can be supported servomotor by carrier roller mechanism 7, during carrying out carrying roller 702 and bearing pin 701 assembling, it assembles bearing planted agent's coating butter, so that it is guaranteed that carrying roller 702 can be freely rotatable.This carrier roller mechanism 7 is hinged in longitudinal sliding motion mechanism 6 by the way of hinged, it is possible to its radian of adaptive adjustment and then carry out the fixed installation of servomotor easily.
Further, described retaining mechanism 5 includes fixing chuck plate 501, fixing chuck plate 501 be fixedly mounted on longitudinally connected bar 305 medial surface and thereon end face be machined with draw-in groove, one end of threaded rod 502 is hinged on the connection seat 604 of longitudinal sliding motion mechanism 6 by afterbody rotating shaft 504, and the other end of threaded rod 502 has been threaded connection binding nut 503.After servomotor is placed on carrier roller mechanism 7, threaded rod 502 is fixed on fixing chuck plate 501 by binding nut 503, thus the carrier roller mechanism 7 being attached thereto is fixed on left slide rail 401 and right slide rail 402, it is ensured that the safety of subsequent operation.
Further, described fluid pressure drive device 8 includes hydraulic cylinder 802, and the left end of hydraulic cylinder 802 is hinged with the end gripper shoe 602 of longitudinal sliding motion mechanism 6 by left axis pin base 801；The right-hand member of hydraulic cylinder 802 is hinged with another end gripper shoe 602 of longitudinal sliding motion mechanism 6 by right axis pin base 803.The distance between two carrier roller mechanisms 7 can be regulated easily by fluid pressure drive device 8, and then realize the regulation of servomotor height.
Further, the oil drain quantity that enters of two cavitys of hydraulic cylinder 802 determines its stroke, thus reaches to clamp the radial stroke of carrying roller.
Further, described hydraulic system 9 includes Hydraulic Station 901, hydraulic pump 903 is installed on Hydraulic Station 901, Hydraulic Station 901 top fixed installation with handles 902, hydraulic pump 903 is connected with the hydraulic cylinder 802 of fluid pressure drive device 8 by many hydraulic oil pipes 905, and described hydraulic pump 903 is provided with controller 904.
Further, described track 201 uses standard trajectory such that it is able to save its course of processing.
Work process of the present utility model and operation principle be:
Before dismounting servomotor, oil cylinder is unloaded after servomotor push-pull bar, manually by eight carrying rollers near servomotor push-pull bar, now gives oil cylinder pulling force pretightning force, hydraulic cylinder 802 drives longitudinal sliding motion mechanism 6 to move radially under the effect of pressure oil, so that eight support roller clamping servomotor push-pull bars.
Then, fuel cut-off, after closing the hand stop valve of oil cylinder pulling force oil-feed port bypass, oil cylinder is locked, i.e. servomotor position is fixed.This device can be additionally used in the short distance of weight and rises act or equipment installation timing use.
Claims (10)
1. the maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor, it is characterized in that: axial traveling rail assembly (2), the bottom of axial traveling rail assembly (2) is provided with orbit altitude adjusting means (1), the upper rolling of described axial traveling rail assembly (2) coordinates installation axial traveling mechanism (3), longitudinal slide track component (4) is installed in axial traveling mechanism (3), by the longitudinal sliding motion mechanism (6) that has been slidably installed on longitudinal slide track component (4), longitudinal sliding motion mechanism (6) is arranged symmetrically on longitudinal slide track component (4), between two longitudinal sliding motion mechanisms (6), fluid pressure drive device (8) is installed, it is provided with retaining mechanism (5) on described longitudinal sliding motion mechanism (6), retaining mechanism (5) is arranged on the two sides of longitudinal slide track component (4)；Described longitudinal sliding motion mechanism (6) is provided with carrier roller mechanism (7)；Described fluid pressure drive device (8) is connected with hydraulic system (9).
A kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor the most according to claim 1, it is characterized in that: described orbit altitude adjusting means (1) includes lower margin supporting pad (101), the center weld of lower margin supporting pad (101) has threaded post (103), being provided with adjusting nut (102) in threaded post (103), the bottom that multiple orbit altitude adjusting meanss (1) are uniformly arranged on axial traveling rail assembly (2) is used for regulating its height.
A kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor the most according to claim 1, it is characterized in that: described axial traveling rail assembly (2) includes two tracks being arranged in parallel (201), track (201) is arranged on threaded post (103) and above and is supported by adjusting nut (102), is installed with many transverse reinforced bars (203) by reinforcing plate (202) between two tracks (201).
A kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor the most according to claim 1, it is characterized in that: described axial traveling mechanism (3) includes two longitudinally connected bars (305), many transverse connecting rods (304) it are installed with between two longitudinally connected bars (305), the outer face of transverse connecting rod (304) is welded with wheel installing plate (302) by reinforcement, wheel shaft (303) is installed between the end of wheel installing plate (302) and longitudinally connected bar (305), wheel (301) is installed on wheel shaft (303), wheel (301) and track (201) constitute rolling and coordinate.
A kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor the most according to claim 1, it is characterized in that: described longitudinal slide track component (4) includes that left slide rail (401) and right slide rail (402), left slide rail (401) and right slide rail (402) are fixedly arranged in the transverse connecting rod (304) of axial traveling mechanism (3) and keep its depth of parallelism；Described longitudinal slide track component (4) has two sets and is respectively and fixedly installed to the two ends of axial traveling mechanism (3).
A kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor the most according to claim 1, it is characterized in that: described longitudinal sliding motion mechanism (6) includes slide block (601), multiple slide blocks (601) are slidably installed respectively on the left slide rail (401) and right slide rail (402) of longitudinal slide track component (4), it is installed with end gripper shoe (602) between slide block (601) on two slide rails, two risers (603) it are installed with in end gripper shoe (602), the center of gripper shoe (602) is installed with connection seat (604).
A kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor the most according to claim 1, it is characterized in that: described carrier roller mechanism (7) includes carrying roller installing plate (703), carrying roller installing plate (703) is hinged on by bearing pin (706) between two risers (603) of longitudinal sliding motion mechanism (6), it is hinged with upper supporting roller (702) by upper pin (701) between trustship installing plate (703), is hinged with snub pulley (704) by lower bearing pin (705).
A kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor the most according to claim 1, it is characterized in that: described retaining mechanism (5) includes fixing chuck plate (501), fixing chuck plate (501) be fixedly mounted on longitudinally connected bar (305) medial surface and thereon end face be machined with draw-in groove, one end of threaded rod (502) is hinged on the connection seat (604) of longitudinal sliding motion mechanism (6) by afterbody rotating shaft (504), and the other end of threaded rod (502) has been threaded connection binding nut (503).
A kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor the most according to claim 1, it is characterized in that: described fluid pressure drive device (8) includes hydraulic cylinder (802), the left end of hydraulic cylinder (802) is hinged with the end gripper shoe (602) of longitudinal sliding motion mechanism (6) by left axis pin base (801)；The right-hand member of hydraulic cylinder (802) is hinged with another end gripper shoe (602) of longitudinal sliding motion mechanism (6) by right axis pin base (803).
A kind of maintenance tool for turbine-generator units large-scale water distributor straight-cylinder servomotor the most according to claim 1, it is characterized in that: described hydraulic system (9) includes Hydraulic Station (901), hydraulic pump (903) is installed on Hydraulic Station (901), Hydraulic Station (901) top fixedly mounts (902) with handles, hydraulic pump (903) is connected with the hydraulic cylinder (802) of fluid pressure drive device (8) by many hydraulic oil pipes (905), and described hydraulic pump (903) is provided with controller (904).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620448264.8U CN205630398U (en) | 2016-05-17 | 2016-05-17 | A examine and repair frock that is used for large -scale water distributor straight -cylinder servomotor of hydroelectric set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620448264.8U CN205630398U (en) | 2016-05-17 | 2016-05-17 | A examine and repair frock that is used for large -scale water distributor straight -cylinder servomotor of hydroelectric set |
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| CN205630398U true CN205630398U (en) | 2016-10-12 |
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| CN201620448264.8U Active CN205630398U (en) | 2016-05-17 | 2016-05-17 | A examine and repair frock that is used for large -scale water distributor straight -cylinder servomotor of hydroelectric set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818016A (en) * | 2016-05-17 | 2016-08-03 | 中国长江电力股份有限公司 | Maintenance tool for large water guide mechanism straight cylinder servomotor of hydraulic turbine generator unit |
| CN108608193A (en) * | 2018-05-14 | 2018-10-02 | 东北大学 | A kind of large fan class blade shaft assignment flange cooperation tool mechanism |
-
2016
- 2016-05-17 CN CN201620448264.8U patent/CN205630398U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818016A (en) * | 2016-05-17 | 2016-08-03 | 中国长江电力股份有限公司 | Maintenance tool for large water guide mechanism straight cylinder servomotor of hydraulic turbine generator unit |
| CN108608193A (en) * | 2018-05-14 | 2018-10-02 | 东北大学 | A kind of large fan class blade shaft assignment flange cooperation tool mechanism |
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